diff --git a/Documentation/Schémas/Diagramme de class.drawio b/Documentation/Schémas/Diagramme de class.drawio
new file mode 100644
index 0000000..2b0142f
--- /dev/null
+++ b/Documentation/Schémas/Diagramme de class.drawio	
@@ -0,0 +1,80 @@
+<mxfile host="app.diagrams.net" modified="2023-09-20T13:12:02.373Z" agent="Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0" etag="3fIbn-yQ0z-1iRBMl3H2" version="21.7.5" type="device">
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+    <mxGraphModel dx="2337" dy="1515" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="827" pageHeight="1169" math="0" shadow="0">
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+        <mxCell id="zkfFHV4jXpPFQw0GAbJ--2" value="Name: string" style="text;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;" parent="zkfFHV4jXpPFQw0GAbJ--0" vertex="1">
+          <mxGeometry y="52" width="270" height="26" as="geometry" />
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+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-1" value="ImageSmall: string" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="zkfFHV4jXpPFQw0GAbJ--0">
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+        <mxCell id="zkfFHV4jXpPFQw0GAbJ--3" value="ImageMedium: string" style="text;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;" parent="zkfFHV4jXpPFQw0GAbJ--0" vertex="1">
+          <mxGeometry y="104" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-2" value="ImageLarge: string" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="zkfFHV4jXpPFQw0GAbJ--0">
+          <mxGeometry y="130" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-4" value="Bio: string" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="zkfFHV4jXpPFQw0GAbJ--0">
+          <mxGeometry y="156" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-5" value="AlternateNames: List&amp;lt;string&amp;gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="zkfFHV4jXpPFQw0GAbJ--0">
+          <mxGeometry y="182" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-6" value="Links: List&amp;lt;Link&amp;gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="zkfFHV4jXpPFQw0GAbJ--0">
+          <mxGeometry y="208" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-7" value="BirthDate: DateTime?" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="zkfFHV4jXpPFQw0GAbJ--0">
+          <mxGeometry y="234" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-8" value="DeathDate: DateTime?" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="zkfFHV4jXpPFQw0GAbJ--0">
+          <mxGeometry y="260" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-9" value="Book" style="swimlane;fontStyle=2;align=center;verticalAlign=top;childLayout=stackLayout;horizontal=1;startSize=26;horizontalStack=0;resizeParent=1;resizeLast=0;collapsible=1;marginBottom=0;rounded=0;shadow=0;strokeWidth=1;" vertex="1" parent="WIyWlLk6GJQsqaUBKTNV-1">
+          <mxGeometry x="-500" y="-90" width="270" height="290" as="geometry">
+            <mxRectangle x="230" y="140" width="160" height="26" as="alternateBounds" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-10" value="Id: string" style="text;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;" vertex="1" parent="ZLGVB8EPfMX_kU-r60Th-9">
+          <mxGeometry y="26" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-11" value="Title: string" style="text;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;" vertex="1" parent="ZLGVB8EPfMX_kU-r60Th-9">
+          <mxGeometry y="52" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-12" value="Publishers: List&amp;lt;string&amp;gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="ZLGVB8EPfMX_kU-r60Th-9">
+          <mxGeometry y="78" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-13" value="PublishDate: DateTime" style="text;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;" vertex="1" parent="ZLGVB8EPfMX_kU-r60Th-9">
+          <mxGeometry y="104" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-14" value="ISBN13: string" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="ZLGVB8EPfMX_kU-r60Th-9">
+          <mxGeometry y="130" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-15" value="Series: List&amp;lt;string&amp;gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="ZLGVB8EPfMX_kU-r60Th-9">
+          <mxGeometry y="156" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-16" value="NbPages: int" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="ZLGVB8EPfMX_kU-r60Th-9">
+          <mxGeometry y="182" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-17" value="Links: List&amp;lt;Link&amp;gt;" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="ZLGVB8EPfMX_kU-r60Th-9">
+          <mxGeometry y="208" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-18" value="BirthDate: DateTime?" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="ZLGVB8EPfMX_kU-r60Th-9">
+          <mxGeometry y="234" width="270" height="26" as="geometry" />
+        </mxCell>
+        <mxCell id="ZLGVB8EPfMX_kU-r60Th-19" value="DeathDate: DateTime?" style="text;strokeColor=none;fillColor=none;align=left;verticalAlign=top;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=0;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;whiteSpace=wrap;html=1;" vertex="1" parent="ZLGVB8EPfMX_kU-r60Th-9">
+          <mxGeometry y="260" width="270" height="26" as="geometry" />
+        </mxCell>
+      </root>
+    </mxGraphModel>
+  </diagram>
+</mxfile>
diff --git a/README.md b/README.md
index d31c403..f6784dd 100644
--- a/README.md
+++ b/README.md
@@ -1,29 +1,191 @@
-# PocketBook
-
-# TP1 : Pages & Views
-_à terminer pour le 17 septembre 2023 - 23h59_
-
-L'objectif est de reproduire les pages et les vues d'une application _PocketBook_ de recherche et de stockage de livres pour iPhone et Android en MAUI.  
-Une reproduction la plus _parfaite_ possible est souhaitée (avec la _TabBar_, le bouton _Modifier_, etc.).  
-  
-Je vous conseille de faire (par ordre de priorité) :
-- la page d'accueil de la bibliothèque ("Mes livres" avec les menus),
-- la page affichant les livres,
-- la page affichant les détails d'un livre,
-- la page permettant de lister les auteurs et de filtrer les livres par auteur
-- le menu contextuel permettant d'ajouter un nouveau livre
-- une page permettant de prêter ou d'emprunter à livre à quelqu'un
-- la page permettant de lister les années de publication et de filtrer les livres
-- la page permettant de trier les livres par note.
-
-## Critères d'évaluation
-- L'app doit marcher sur iOS et Android
-- Création des pages 
-- Utilisation de _Views_ (layout, affichage, buttons...)
-- Création de _Views_ personnalisées
-- Création et utilisation de Styles et ressources
-- Création et utilisation des _Themes_ (light & dark)
-- (si besoin) utilisation du MAUI Community Toolkit
+# PocketBook - Louis DUFOUR
+
+## Informations projet
+Application développer sous android API 28 pour ma part.
+
+### Documentation
+Vous avez des débuts de schéma, mais cela reste encore en cour de construction.
+
+### Cas d'erreur connus
+#### Vu principale
+- Button + *(TODO)*
+- Button modifier *(TODO)*
+
+#### Vu Tous
+- Nom auteur problème d'affichage *(TODO)*
+- Image par défaut *(TODO prévoire une image pardéfaut)*
+- Button Tri *(TODO)*
+- Button + *(TODO)*
+
+#### Vu Detail
+- Binding data *(En cours)*
+- Button:
+	- Déplacer Livre *(TODO)*
+	- Ajouter à la liste à lire plustard *(TODO)*
+	- Changer le status *(TODO)*
+	- préter le livre *(TODO)*
+
+#### Vu Emprunt
+- Page xaml *(TODO)*
+- logic du switch button *(TODO)*
+- Button tri *(TODO)*
+- Button + *(TODO)*
+
+#### Vu Filtre
+- Button Tri (avec le changement du nom en haut)
+- Barre de recherche
+(utiliser l'appel par nom d'auteur)
+- Binding du nombre de livre
+
+### L'accès au code noté
+- Projet ToolKitt
+- Projet VMWrapper
+- Projet BookApp Dossier ViewModel
+
+## Modèle
+
+```mermaid
+classDiagram
+direction LR
+class Book {
+    +Id : string
+    +Title : string
+    +Publishers : List~string~
+    +PublishDate : DateTime
+    +ISBN13 : string
+    +Series : List~string~
+    +NbPages : int
+    +Format : string
+    +ImageSmall : string
+    +ImageMedium : string
+    +ImageLarge : string
+}
+
+class Languages {
+    <<enum>>
+    Unknown,
+    French,
+}
+
+class Work {
+    +Id : string
+    +Description : string
+    +Title : string
+    +Subjects : List~string~
+}
+
+class Contributor {
+    +Name : string
+    +Role : string
+}
+
+class Author {
+    +Id : string
+    +Name : string
+    +ImageSmall : string
+    +ImageMedium : string
+    +ImageLarge : string
+    +Bio : string
+    +AlternateNames : List~string~
+    +BirthDate : DateTime?
+    +DeathDate : DateTime?
+}
+
+class Link {
+    +Title : string
+    +Url : string
+}
+
+class Ratings {
+    +Average : float
+    +Count : int
+}
+
+Book --> "1" Languages  : Language
+Book --> "*" Contributor : Contributors
+Author --> "*" Link : Links
+Work --> "*" Author : Authors
+Work --> "1" Ratings : Ratings
+Book --> "*" Author : Authors
+Book --> "*" Work : Works
+
+class Status {
+    <<enum>>
+    Unknown,
+    Finished,
+    Reading,
+    NotRead,
+    ToBeRead
+}
+
+class Contact{
+    +string Id;
+    +string FirstName;
+    +string LastName;
+}
+```  
+
+## Services & Interfaces
+```mermaid
+classDiagram
+direction LR
+Book --> "1" Languages  : Language
+Book --> "*" Contributor : Contributors
+Author --> "*" Link : Links
+Work --> "1" Ratings : Ratings
+Work --> "*" Author : Authors
+Book --> "*" Work : Works
+Book --> "*" Author : Authors
+
+class IUserLibraryManager {
+    <<interface>>
+    +AddBook(Book book) : Task<Book>
+    +AddBook(string id) : Task<Book>
+    +AddBookByIsbn(string isbn) : Task<Book>
+    +RemoveBook(Book book) : Task<bool>
+    +RemoveBook(string id) : Task<bool>
+    +RemoveBook(string id) : Task<bool>
+    +AddToFavorites(Book book) : Task<bool>
+    +AddToFavorites(string bookId) : Task<bool>
+    +RemoveFromFavorites(Book book) : Task<bool>
+    +RemoveFromFavorites(string bookId) : Task<bool>
+    +UpdateBook(Book updatedBook) : Task<Book>
+    +AddContact(Contact contact) : Task<Contact>
+    +RemoveContact(Contact contact) : Task<bool>
+    +LendBook(Book book, Contact contact, DateTime? loanDate) : Task<bool>
+    +GetBackBook(Book book, DateTime? returnedDate) : Task<bool>
+    +BorrowBook(Book book, Contact owner, DateTime? borrowedDate) : Task<bool>
+    +GiveBackBook(Book book, DateTime? returnedDate) : Task<bool>
+
+    +GetCurrentLoans(int index, int count)
+    +GetPastLoans(int index, int count)
+    +GetCurrentBorrowings(int index, int count)
+    +GetPastBorrowings(int index, int count)
+    +GetContacts(int index, int count)
+}
+
+class ILibraryManager {
+    <<interface>>
+    +GetBookById(string id)
+    +GetBookByIsbn(string isbn)
+    +GetBooksByTitle(string title, int index, int count, string sort)
+    +GetBooksByAuthorId(string authorId, int index, int count, string sort)
+    +GetBooksByAuthor(string author, int index, int count, string sort)
+    +GetAuthorById(string id)
+    +GetAuthorsByName(string substring, int index, int count, string sort)
+}
+
+class Status {
+    <<enum>>
+}
+
+IUserLibraryManager ..|> ILibraryManager
+IUserLibraryManager ..> Status
+IUserLibraryManager ..> Contact
+IUserLibraryManager ..> Book
+ILibraryManager ..> Book
+ILibraryManager ..> Author
+```
 
 ## Ressources 
 - [Doc officielle MAUI](https://learn.microsoft.com/en-us/dotnet/maui/)
@@ -71,6 +233,11 @@ Lorsqu'on clique sur un le filtre "Date de publication" de la page "Mes Livres",
 
 Un clic sur une de ces années permet d'aller sur la même page que celle qui affiche la liste des livres, mais seuls les livres publiée cette année apparaitront.  
 
+### Emprunts / Prêts
+Lorsqu'on clique sur le menu "En prêt" sur la page d'accueil, on peut voir la liste de nos emprunts et de nos prêts répartis par contacts. Par exemple :  
+<img src="screens/emprunts.png" width="300"/>   
+Le switch permet de voir les livres qu'on a prêtés regroupés par contacts, ou les livres qu'on a empruntés regroupés par prêteurs.  
+
 ### Le fameux bouton "+"
 Un clic sur le bouton "+" fait apparaître un sous-menu permettant d'ajouter un livre à la bibliothèque :
 - en scannant un code-barres (cf. plus bas)
@@ -85,11 +252,3 @@ La page Scan pourra être réalisée plus tard.
 
 <img src="screens/Scan.jpeg" width="300"/>  
 
-# Troubleshootings
-
-#### J'ai bien renommé mes images, mais le Mac continue à me dire que non...
-C'est peut-être dû au fait que certains fichiers cachés n'ont pas été correctement exclus (notamment les ```.DS_Store```).  
-Essayez d'appeler cette commande depuis un Terminal (sous Visual ou depuis... un Terminal) :  
-```
-find . -name ".DS_Store" -delete
-```
diff --git a/Sources/BookApp.sln b/Sources/BookApp.sln
index 564ec79..24acfb1 100644
--- a/Sources/BookApp.sln
+++ b/Sources/BookApp.sln
@@ -1,33 +1,87 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 17
-VisualStudioVersion = 17.7.34024.191
-MinimumVisualStudioVersion = 10.0.40219.1
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BookApp", "BookApp\BookApp.csproj", "{DBD6BB08-83E2-42EA-A28C-32DB6959E4B5}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TestFrontEnd", "TestFrontEnd\TestFrontEnd.csproj", "{90EE7351-A889-4CE3-B066-090931FD69C6}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Any CPU = Debug|Any CPU
-		Release|Any CPU = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{DBD6BB08-83E2-42EA-A28C-32DB6959E4B5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{DBD6BB08-83E2-42EA-A28C-32DB6959E4B5}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{DBD6BB08-83E2-42EA-A28C-32DB6959E4B5}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
-		{DBD6BB08-83E2-42EA-A28C-32DB6959E4B5}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{DBD6BB08-83E2-42EA-A28C-32DB6959E4B5}.Release|Any CPU.Build.0 = Release|Any CPU
-		{DBD6BB08-83E2-42EA-A28C-32DB6959E4B5}.Release|Any CPU.Deploy.0 = Release|Any CPU
-		{90EE7351-A889-4CE3-B066-090931FD69C6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{90EE7351-A889-4CE3-B066-090931FD69C6}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{90EE7351-A889-4CE3-B066-090931FD69C6}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{90EE7351-A889-4CE3-B066-090931FD69C6}.Release|Any CPU.Build.0 = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-	GlobalSection(ExtensibilityGlobals) = postSolution
-		SolutionGuid = {27FCF0C7-3613-4FC6-9E95-2EEFB171F0F4}
-	EndGlobalSection
-EndGlobal
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.7.34024.191
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BookApp", "BookApp\BookApp.csproj", "{DBD6BB08-83E2-42EA-A28C-32DB6959E4B5}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DtoAbstractLayer", "DtoAbstractLayer\DtoAbstractLayer.csproj", "{C45DF3F7-AFCA-4252-89CC-1A6E5CA9EF33}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JsonReader", "JsonReader\JsonReader.csproj", "{F2A0B67A-2BA9-4447-9BFD-708D430EBCFA}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "LibraryDTO", "LibraryDTO\LibraryDTO.csproj", "{94F9B003-9A66-424E-9758-77D140F041BA}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Model", "Model\Model.csproj", "{70ECEB25-24E4-47AA-BA64-0F0C8C4F090F}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "StubbedDTO", "StubbedDTO\StubbedDTO.csproj", "{B84474A1-D290-473B-AFF3-FA4ECB509024}"
+EndProject
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+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Stub", "Stub\Stub.csproj", "{14ED7ADF-7B83-432E-A87B-40C153041067}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Tests", "Tests\Tests.csproj", "{945A6DB3-CB0A-4FB8-8117-64F0CB0D838A}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "VMWrapper", "VMWrapper\VMWrapper.csproj", "{377DC5AB-5D7C-4A29-ACED-C08B581A8E58}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ToolKit", "ToolKit\ToolKit.csproj", "{778541B9-BECF-49DC-8860-B8F134A6F4E2}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{DBD6BB08-83E2-42EA-A28C-32DB6959E4B5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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+		{DBD6BB08-83E2-42EA-A28C-32DB6959E4B5}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
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+		{DBD6BB08-83E2-42EA-A28C-32DB6959E4B5}.Release|Any CPU.Build.0 = Release|Any CPU
+		{DBD6BB08-83E2-42EA-A28C-32DB6959E4B5}.Release|Any CPU.Deploy.0 = Release|Any CPU
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+		{C45DF3F7-AFCA-4252-89CC-1A6E5CA9EF33}.Debug|Any CPU.Build.0 = Debug|Any CPU
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+		{C45DF3F7-AFCA-4252-89CC-1A6E5CA9EF33}.Release|Any CPU.Build.0 = Release|Any CPU
+		{F2A0B67A-2BA9-4447-9BFD-708D430EBCFA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F2A0B67A-2BA9-4447-9BFD-708D430EBCFA}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F2A0B67A-2BA9-4447-9BFD-708D430EBCFA}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F2A0B67A-2BA9-4447-9BFD-708D430EBCFA}.Release|Any CPU.Build.0 = Release|Any CPU
+		{94F9B003-9A66-424E-9758-77D140F041BA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{94F9B003-9A66-424E-9758-77D140F041BA}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{94F9B003-9A66-424E-9758-77D140F041BA}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{94F9B003-9A66-424E-9758-77D140F041BA}.Release|Any CPU.Build.0 = Release|Any CPU
+		{70ECEB25-24E4-47AA-BA64-0F0C8C4F090F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{70ECEB25-24E4-47AA-BA64-0F0C8C4F090F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{70ECEB25-24E4-47AA-BA64-0F0C8C4F090F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{70ECEB25-24E4-47AA-BA64-0F0C8C4F090F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B84474A1-D290-473B-AFF3-FA4ECB509024}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B84474A1-D290-473B-AFF3-FA4ECB509024}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B84474A1-D290-473B-AFF3-FA4ECB509024}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B84474A1-D290-473B-AFF3-FA4ECB509024}.Release|Any CPU.Build.0 = Release|Any CPU
+		{03A3193F-92CC-4360-8061-E5207CC7FD2F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{03A3193F-92CC-4360-8061-E5207CC7FD2F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{03A3193F-92CC-4360-8061-E5207CC7FD2F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{03A3193F-92CC-4360-8061-E5207CC7FD2F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{14ED7ADF-7B83-432E-A87B-40C153041067}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{14ED7ADF-7B83-432E-A87B-40C153041067}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{14ED7ADF-7B83-432E-A87B-40C153041067}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{14ED7ADF-7B83-432E-A87B-40C153041067}.Release|Any CPU.Build.0 = Release|Any CPU
+		{945A6DB3-CB0A-4FB8-8117-64F0CB0D838A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{945A6DB3-CB0A-4FB8-8117-64F0CB0D838A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{945A6DB3-CB0A-4FB8-8117-64F0CB0D838A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{945A6DB3-CB0A-4FB8-8117-64F0CB0D838A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{377DC5AB-5D7C-4A29-ACED-C08B581A8E58}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{377DC5AB-5D7C-4A29-ACED-C08B581A8E58}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{377DC5AB-5D7C-4A29-ACED-C08B581A8E58}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{377DC5AB-5D7C-4A29-ACED-C08B581A8E58}.Release|Any CPU.Build.0 = Release|Any CPU
+		{778541B9-BECF-49DC-8860-B8F134A6F4E2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{778541B9-BECF-49DC-8860-B8F134A6F4E2}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{778541B9-BECF-49DC-8860-B8F134A6F4E2}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{778541B9-BECF-49DC-8860-B8F134A6F4E2}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {27FCF0C7-3613-4FC6-9E95-2EEFB171F0F4}
+	EndGlobalSection
+EndGlobal
diff --git a/Sources/BookApp/AppShell.xaml b/Sources/BookApp/AppShell.xaml
index 17d3960..8d1f046 100644
--- a/Sources/BookApp/AppShell.xaml
+++ b/Sources/BookApp/AppShell.xaml
@@ -10,24 +10,21 @@
 
     <TabBar >
         <Tab Title="My Library"
-            Icon="books_vertical_fill.svg">
+             Icon="books_vertical_fill.svg">
             <ShellContent ContentTemplate="{DataTemplate local:MainPage}" Route="Mainpage"/>
         </Tab>
         <Tab Title="My lists"
-            Icon="list_bullet.svg">
-            <ShellContent ContentTemplate="{DataTemplate pages:EmpruntsPrets}"/>
+             Icon="list_bullet.svg">
+            <ShellContent ContentTemplate="{DataTemplate pages:Tous}" Route="TousPage"/>
         </Tab>
         <Tab Title="My Readings"
-            Icon="bookmark_fill.svg">
-            <ShellContent ContentTemplate="{DataTemplate local:MainPage}" />
+             Icon="bookmark_fill.svg">
+            <ShellContent ContentTemplate="{DataTemplate pages:EmpruntsPrets}" Route="EmpruntsPretsPage"/>
         </Tab>
         <Tab Title="Search"
-            Icon="magnifyingglass.svg">
-            <ShellContent ContentTemplate="{DataTemplate local:MainPage}" />
+             Icon="magnifyingglass.svg">
+            <ShellContent ContentTemplate="{DataTemplate pages:Filtrage}" Route="FiltragePage"/>
         </Tab>
     </TabBar>
 
-    <ShellContent Route="FiltragePage" ContentTemplate="{DataTemplate pages:Filtrage}" />
-    <ShellContent Route="TousPage" ContentTemplate="{DataTemplate pages:Tous}" />
-
 </Shell>
diff --git a/Sources/BookApp/AppShell.xaml.cs b/Sources/BookApp/AppShell.xaml.cs
index ce0183e..8f31430 100644
--- a/Sources/BookApp/AppShell.xaml.cs
+++ b/Sources/BookApp/AppShell.xaml.cs
@@ -10,7 +10,8 @@ namespace BookApp
             Routing.RegisterRoute("FiltragePage", typeof(Filtrage));
             Routing.RegisterRoute("TousPage", typeof(Tous));
             Routing.RegisterRoute("Mainpage", typeof(MainPage));
-            Routing.RegisterRoute("EmpruntsPrets", typeof(EmpruntsPrets));
+            Routing.RegisterRoute("EmpruntsPretsPage", typeof(EmpruntsPrets));
+            Routing.RegisterRoute("DetailBookPage", typeof(DetailBook));
         }
     }
 }
diff --git a/Sources/BookApp/BookApp.csproj b/Sources/BookApp/BookApp.csproj
index 9fa3b51..0eae26e 100644
--- a/Sources/BookApp/BookApp.csproj
+++ b/Sources/BookApp/BookApp.csproj
@@ -67,9 +67,17 @@
 	</ItemGroup>
 
 	<ItemGroup>
-		<PackageReference Include="CommunityToolkit.Maui" Version="5.3.0" />
+		<PackageReference Include="CommunityToolkit.Maui" Version="6.0.0" />
 		<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="7.0.0" />
 		<PackageReference Include="SimpleRatingControl.MAUI" Version="0.1.0" />
+		<PackageReference Include="System.Linq" Version="4.3.0" />
+	</ItemGroup>
+
+	<ItemGroup>
+	  <ProjectReference Include="..\Model\Model.csproj" />
+	  <ProjectReference Include="..\Stub\Stub.csproj" />
+	  <ProjectReference Include="..\ToolKit\ToolKit.csproj" />
+	  <ProjectReference Include="..\VMWrapper\VMWrapper.csproj" />
 	</ItemGroup>
 
 	<ItemGroup>
@@ -79,6 +87,9 @@
 	  <MauiXaml Update="Composants\GroupCollection.xaml">
 	    <Generator>MSBuild:Compile</Generator>
 	  </MauiXaml>
+	  <MauiXaml Update="Composants\ToggleSwitchView.xaml">
+	    <Generator>MSBuild:Compile</Generator>
+	  </MauiXaml>
 	  <MauiXaml Update="Pages\DetailBook.xaml">
 	    <Generator>MSBuild:Compile</Generator>
 	  </MauiXaml>
diff --git a/Sources/BookApp/Composants/CollectionFiltrage.xaml b/Sources/BookApp/Composants/CollectionFiltrage.xaml
index 0488b1a..79a5eab 100644
--- a/Sources/BookApp/Composants/CollectionFiltrage.xaml
+++ b/Sources/BookApp/Composants/CollectionFiltrage.xaml
@@ -2,10 +2,12 @@
 <ContentView xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"
+             xmlns:vm="clr-namespace:BookApp.ViewModel"
+             xmlns:model="clr-namespace:Model;assembly=Model"
              x:Class="BookApp.Composants.CollectionFiltrage">
-    <CollectionView ItemsSource="{Binding MyCollections1}">
+    <CollectionView ItemsSource="{Binding AuthorList}" x:Name="collectionView">
         <CollectionView.ItemTemplate>
-            <DataTemplate>
+            <DataTemplate x:DataType="model:Author">
                 <StackLayout Padding="5">
                     <Grid RowDefinitions="auto" Margin="5,0,0,0">
                         <Grid.ColumnDefinitions>
@@ -19,8 +21,8 @@
                                 <toolkit:IconTintColorBehavior TintColor="Red" />
                             </Image.Behaviors>
                         </Image>
-                        <Label Grid.Column="1" Margin="10,0,0,0"  VerticalTextAlignment="Center" Text="{Binding AuteurName}"/>
-                        <Label Grid.Column="2"  VerticalTextAlignment="Center" Margin="0,0,40,0" HorizontalTextAlignment="End" Text="{Binding NbLivre}"/>
+                        <Label Grid.Column="1" Margin="10,0,0,0"  VerticalTextAlignment="Center" Text="{Binding Name}"/>
+                        <Label Grid.Column="2"  VerticalTextAlignment="Center" Margin="0,0,40,0" HorizontalTextAlignment="End" Text="{Binding Source={x:Reference collectionView}, Path=BindingContext.TotalBooks}"/>
                         <Button Grid.Column="2"
                         ImageSource="chevron_right.svg"
                         HeightRequest="35"
diff --git a/Sources/BookApp/Composants/CollectionFiltrage.xaml.cs b/Sources/BookApp/Composants/CollectionFiltrage.xaml.cs
index 4330a49..3d166a3 100644
--- a/Sources/BookApp/Composants/CollectionFiltrage.xaml.cs
+++ b/Sources/BookApp/Composants/CollectionFiltrage.xaml.cs
@@ -1,44 +1,19 @@
-using System.Collections.ObjectModel;
-
-namespace BookApp.Composants;
-
-public partial class CollectionFiltrage : ContentView
-{
-    public class ObjetTemp
-    {
-        public string AuteurName { get; set; }
-        public int NbLivre { get; set; }
-
-        public ObjetTemp(string name, int number)
-        {
-            AuteurName = name;
-            NbLivre = number;
-        }
-    }
-
-    public ObservableCollection<ObjetTemp> MyCollections1 { get; set; }
-
-    public CollectionFiltrage()
-    {
-        InitializeComponent();
-        MyCollections1 = new ObservableCollection<ObjetTemp>()
-        {
-            new ObjetTemp("Victor Hugo", 10),
-            new ObjetTemp("Jane Austen", 3),
-            new ObjetTemp("F. Scott Fitzgerald", 5),
-            new ObjetTemp("George Orwell", 4),
-            new ObjetTemp("Haruki Murakami", 8),
-            new ObjetTemp("Gabriel Garc�a M�rquez", 9),
-            new ObjetTemp("J.K. Rowling", 9),
-            new ObjetTemp("Leo Tolstoy", 9),
-            new ObjetTemp("Ernest Hemingway", 9),
-            new ObjetTemp("Agatha Christie", 9),
-            new ObjetTemp("Mark Twain", 9),
-            new ObjetTemp("J.R.R. Tolkien", 9),
-            new ObjetTemp("William Shakespeare", 9),
-            new ObjetTemp("Charles Dickensn", 9),
-            new ObjetTemp("Isaac Asimov", 9),
-        };
-        BindingContext = this;
-    }
-}
+using BookApp.ViewModel;
+using VMWrapper;
+
+namespace BookApp.Composants
+{
+    public partial class CollectionFiltrage : ContentView
+    {
+        public CollectionFiltrage()
+        {
+            InitializeComponent();
+        }
+
+        public CollectionFiltrage(FilterViewModel data)
+            : this()
+        {
+            BindingContext = data;
+        }
+    }
+}
diff --git a/Sources/BookApp/Composants/GroupCollection.xaml b/Sources/BookApp/Composants/GroupCollection.xaml
index bca8719..4b65068 100644
--- a/Sources/BookApp/Composants/GroupCollection.xaml
+++ b/Sources/BookApp/Composants/GroupCollection.xaml
@@ -2,75 +2,82 @@
 <ContentView xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              xmlns:composants="clr-namespace:BookApp.Composants"
+             xmlns:model="clr-namespace:Model;assembly=Model"
+             xmlns:usecase="clr-namespace:BookApp.UseCase" 
+             x:Name="ThisPage"
              x:Class="BookApp.Composants.GroupCollection">
+
     <ContentView.Resources>
-        <Style TargetType="StackLayout">
-            <Setter Property="VisualStateManager.VisualStateGroups">
-                <VisualStateGroupList>
-                    <VisualStateGroup x:Name="CommonStates">
-                        <VisualState x:Name="Normal" />
-                        <VisualState x:Name="Selected">
-                            <VisualState.Setters>
-                                <Setter Property="BackgroundColor"
-                                        Value="Transparent" />
-                            </VisualState.Setters>
-                        </VisualState>
-                    </VisualStateGroup>
-                </VisualStateGroupList>
-            </Setter>
-        </Style>
+        <ResourceDictionary>
+            <usecase:AuthorsListToStringConverter x:Key="authorsConverter"/>
+        </ResourceDictionary>
     </ContentView.Resources>
-    <CollectionView ItemsSource="{Binding AuteurGroups}" IsGrouped="True" SelectionMode="Single" SelectionChanged="OnSelectionChanged">
+
+    <CollectionView ItemsSource="{Binding AuteurGroups}" IsGrouped="True" SelectionMode="Single" x:Name="groupCollectionView">
         <CollectionView.GroupHeaderTemplate>
-            <DataTemplate>
+            <DataTemplate x:DataType="model:Author">
                 <Label Text="{Binding Name}"
                  FontFamily="SF-Compact-Display-Semibold"
                  BackgroundColor="LightGrey"
                  TextColor="Gray"
-                 Padding="5"
-                 Margin="15,0,0,0"/>
+                 Padding="5"/>
             </DataTemplate>
         </CollectionView.GroupHeaderTemplate>
         <CollectionView.ItemTemplate>
-            <DataTemplate>
-                <StackLayout>
-                    <Grid>
-                        <Grid.RowDefinitions>
-                            <RowDefinition Height="Auto"/>
-                        </Grid.RowDefinitions>
-                        <Grid.ColumnDefinitions>
-                            <ColumnDefinition Width="*"/>
-                            <ColumnDefinition Width="*"/>
-                        </Grid.ColumnDefinitions>
-                        <Image Grid.Column="0"
-                        Source="{Binding ImageBook}"
-                        HeightRequest="125"
-                        WidthRequest="125"
-                        Margin="0,10,0,10"/>
-                        <StackLayout Grid.Column="1">
-                            <Label Text="{Binding Name}"
-                            FontFamily="SF-Compact-Display-Bold"
-                            FontSize="18"
-                            TextColor="Black"/>
-                            <Label Text="{Binding Auteur.Name}"
-                            FontFamily="SF-Compact-Display-Semibold"
-                            TextColor="Black"/>
-                            <Label 
-                            TextColor="SlateGray"
-                            Text="{Binding Statut}"/>
-                           
-                            <StackLayout Margin="0,10" Orientation="Horizontal" VerticalOptions="EndAndExpand">
-                                <Image Source="empty_star.svg" WidthRequest="25" HeightRequest="25"/>
-                                <Image Source="empty_star.svg" WidthRequest="25" HeightRequest="25"/>
-                                <Image Source="empty_star.svg" WidthRequest="25" HeightRequest="25"/>
-                                <Image Source="empty_star.svg" WidthRequest="25" HeightRequest="25"/>
-                                <Image Source="empty_star.svg" WidthRequest="25" HeightRequest="25"/>
-                            </StackLayout>
+            <DataTemplate x:DataType="model:Book">
+                <SwipeView Style="{StaticResource StyleCollectionStack}">
+                    <SwipeView.LeftItems>
+                        <SwipeItems>
+                            <SwipeItem Text="Favorite"
+                                       IconImageSource="favorite.png"
+                                       BackgroundColor="LightGreen"/>
+                            <SwipeItem Text="Delete"
+                                       IconImageSource="delete.png"
+                                       BackgroundColor="LightPink"
+                                       Command="{Binding Source={x:Reference groupCollectionView}, Path=BindingContext.RemoveBookCommand}"
+                                       CommandParameter="{Binding Id}"/>
+                        </SwipeItems>
+                    </SwipeView.LeftItems>
+                    <StackLayout>
+                        <Grid>
+                            <Grid.GestureRecognizers>
+                                <TapGestureRecognizer Command="{Binding Source={x:Reference ThisPage}, Path=Nav.BookDetailCommand}"
+                                                      CommandParameter="{Binding Id}"/>
+                            </Grid.GestureRecognizers>
+                            <Grid.RowDefinitions>
+                                <RowDefinition Height="Auto"/>
+                            </Grid.RowDefinitions>
+                            <Grid.ColumnDefinitions>
+                                <ColumnDefinition Width="*"/>
+                                <ColumnDefinition Width="*"/>
+                            </Grid.ColumnDefinitions>
+                            <Image Grid.Column="0"
+                            Source="{Binding ImageLarge}"
+                            HeightRequest="125"
+                            WidthRequest="125"
+                            Margin="0,10,0,10"/>
+                            <StackLayout Grid.Column="1">
+                                <Label Text="{Binding Title}"
+                                FontFamily="SF-Compact-Display-Bold"
+                                FontSize="18"
+                                TextColor="Black"/>
+                                <Label Text="{Binding Authors, Converter={StaticResource authorsConverter}}" FontFamily="SF-Compact-Display-Semibold" TextColor="Black"/>
+                                <Label 
+                                TextColor="SlateGray"
+                                Text="{Binding Status}"/>
 
-                        </StackLayout>
-                    </Grid>
-                    <Rectangle Margin="25,0,0,10" HeightRequest="1" BackgroundColor="LightGray"  VerticalOptions="End" />
-                </StackLayout>
+                                <StackLayout Margin="0,10" Orientation="Horizontal" VerticalOptions="EndAndExpand">
+                                    <Image Source="empty_star.svg" WidthRequest="25" HeightRequest="25"/>
+                                    <Image Source="empty_star.svg" WidthRequest="25" HeightRequest="25"/>
+                                    <Image Source="empty_star.svg" WidthRequest="25" HeightRequest="25"/>
+                                    <Image Source="empty_star.svg" WidthRequest="25" HeightRequest="25"/>
+                                    <Image Source="empty_star.svg" WidthRequest="25" HeightRequest="25"/>
+                                </StackLayout>
+                            </StackLayout>
+                        </Grid>
+                        <Rectangle Margin="25,0,0,10" HeightRequest="1" BackgroundColor="LightGray"  VerticalOptions="End" />
+                    </StackLayout>
+                </SwipeView>
             </DataTemplate>
         </CollectionView.ItemTemplate>
     </CollectionView>
diff --git a/Sources/BookApp/Composants/GroupCollection.xaml.cs b/Sources/BookApp/Composants/GroupCollection.xaml.cs
index 271bd67..5a36db6 100644
--- a/Sources/BookApp/Composants/GroupCollection.xaml.cs
+++ b/Sources/BookApp/Composants/GroupCollection.xaml.cs
@@ -1,22 +1,21 @@
-using BookApp.Model;
-using BookApp.Pages;
-using BookApp.ViewModel;
-
-namespace BookApp.Composants
-{
-    public partial class GroupCollection : ContentView
-    {
-        public GroupCollection()
-        {
-            InitializeComponent();
-        }
-
-        private async void OnSelectionChanged(object sender, SelectionChangedEventArgs e)
-        {
-            if (e.CurrentSelection.FirstOrDefault() is Book selectedItem)
-            {
-                await Navigation.PushAsync(new DetailBook(selectedItem));
-            }
-        }
-    }
-}
+using BookApp.ViewModel;
+using VMWrapper;
+
+namespace BookApp.Composants
+{
+    public partial class GroupCollection : ContentView
+    {
+        public ViewModelNavigation Nav { get; } = new ViewModelNavigation();
+
+        public GroupCollection()
+        {
+            InitializeComponent();
+        }
+
+        public GroupCollection(BooksViewModel data)
+            : this()
+        {
+            BindingContext = data;
+        }
+    }
+}
diff --git a/Sources/BookApp/Composants/ToggleSwitchView.xaml b/Sources/BookApp/Composants/ToggleSwitchView.xaml
new file mode 100644
index 0000000..79deb61
--- /dev/null
+++ b/Sources/BookApp/Composants/ToggleSwitchView.xaml
@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentView xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="BookApp.Composants.ToggleSwitchView">
+    <Grid 
+        VerticalOptions="FillAndExpand"
+        HorizontalOptions="FillAndExpand"
+        Padding="10">
+
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="*" />
+        </Grid.RowDefinitions>
+
+        <StackLayout 
+            Orientation="Horizontal" 
+            HorizontalOptions="Center" 
+            VerticalOptions="Center"
+            Grid.Row="0"
+            Spacing="30">
+
+            <Label 
+                x:Name="OffLabel" 
+                Text="Prêts" 
+                Opacity="0.25"
+                VerticalTextAlignment="Center"/>
+
+            <Grid
+                VerticalOptions="Center"
+                HorizontalOptions="Center"
+                Scale="1.5">
+                
+                <Switch 
+                x:Name="ToggleSwitch" 
+                Toggled="OnToggled" />
+            
+            </Grid>
+            
+            <Label 
+                x:Name="OnLabel" 
+                Text="Emprunts" 
+                Opacity="0.25"
+                VerticalTextAlignment="Center"/>
+        </StackLayout>
+
+        <!-- Autres éléments de l'interface utilisateur si nécessaire -->
+    </Grid>
+</ContentView>
diff --git a/Sources/BookApp/Composants/ToggleSwitchView.xaml.cs b/Sources/BookApp/Composants/ToggleSwitchView.xaml.cs
new file mode 100644
index 0000000..ce217f9
--- /dev/null
+++ b/Sources/BookApp/Composants/ToggleSwitchView.xaml.cs
@@ -0,0 +1,24 @@
+namespace BookApp.Composants;
+
+public partial class ToggleSwitchView : ContentView
+{
+    public ToggleSwitchView()
+    {
+        InitializeComponent();
+    }
+
+    // Gestionnaire d'�v�nements pour le changement d'�tat du switch
+    private void OnToggled(object sender, ToggledEventArgs e)
+    {
+        if (e.Value) // Si c'est ON
+        {
+            OnLabel.Opacity = 1;
+            OffLabel.Opacity = 0.25;
+        }
+        else // Si c'est OFF
+        {
+            OnLabel.Opacity = 0.25;
+            OffLabel.Opacity = 1;
+        }
+    }
+}
diff --git a/Sources/BookApp/Data/Stub.cs b/Sources/BookApp/Data/Stub.cs
deleted file mode 100644
index 82116b5..0000000
--- a/Sources/BookApp/Data/Stub.cs
+++ /dev/null
@@ -1,198 +0,0 @@
-using BookApp.Model;
-using System.Collections.ObjectModel;
-
-namespace BookApp.Data
-{
-    public class Stub
-    {
-        public ObservableCollection<Auteur> Auteurs { get; private set; } =
-            new ObservableCollection<Auteur>();
-
-        public ObservableCollection<Auteur> CreateStubData()
-        {
-            var victorHugo = new Auteur
-            {
-                Name = "Victor Hugo",
-                Books = new ObservableCollection<Book>()
-            };
-
-            var georgeOrwell = new Auteur
-            {
-                Name = "George Orwell",
-                Books = new ObservableCollection<Book>()
-            };
-
-            var jkRowling = new Auteur
-            {
-                Name = "J.K. Rowling",
-                Books = new ObservableCollection<Book>()
-            };
-
-            Auteurs.Add(victorHugo);
-            Auteurs.Add(georgeOrwell);
-            Auteurs.Add(jkRowling);
-
-            AddBookToAuthor(
-                victorHugo,
-                "Les Misérables",
-                "dotnet_bot.svg",
-                new Star(5),
-                StatutDeLecture.Lu,
-                true,
-                false,
-                false,
-                "Grasset",
-                "Une épopée sur la vie de Jean Valjean...",
-                1232,
-                "Français",
-                "978-1234567890",
-                "2023-09-10",
-                "https://link_to_les_miserables.com"
-            );
-            AddBookToAuthor(
-                victorHugo,
-                "Notre-Dame de Paris",
-                "dotnet_bot.svg",
-                new Star(4),
-                StatutDeLecture.A_Lire,
-                false,
-                true,
-                false,
-                "Grasset",
-                "L'histoire de Quasimodo...",
-                940,
-                "Français",
-                "978-2345678910",
-                "2023-06-05",
-                "https://link_to_notre_dame.com"
-            );
-            AddBookToAuthor(
-                georgeOrwell,
-                "1984",
-                "dotnet_bot.svg",
-                new Star(4),
-                StatutDeLecture.A_Lire,
-                false,
-                true,
-                false,
-                "Penguin",
-                "L'histoire d'un futur dystopique...",
-                328,
-                "Anglais",
-                "978-9876543210",
-                "2023-08-01",
-                "https://link_to_1984.com"
-            );
-            AddBookToAuthor(
-                georgeOrwell,
-                "La Ferme des animaux",
-                "dotnet_bot.svg",
-                new Star(3),
-                StatutDeLecture.Non_Lu,
-                false,
-                false,
-                true,
-                "Penguin",
-                "Comment les animaux ont pris le pouvoir...",
-                112,
-                "Anglais",
-                "978-8765432109",
-                "2023-07-20",
-                "https://link_to_ferme_animaux.com"
-            );
-            AddBookToAuthor(
-                jkRowling,
-                "Harry Potter à l'école des sorciers",
-                "dotnet_bot.svg",
-                new Star(5),
-                StatutDeLecture.Lu,
-                true,
-                false,
-                false,
-                "Bloomsbury",
-                "L'aventure magique commence pour Harry...",
-                309,
-                "Anglais",
-                "978-7654321098",
-                "2023-01-15",
-                "https://link_to_hp_sorciers.com"
-            );
-            AddBookToAuthor(
-                jkRowling,
-                "Harry Potter et la chambre des secrets",
-                "dotnet_bot.svg",
-                new Star(5),
-                StatutDeLecture.Lu,
-                true,
-                false,
-                false,
-                "Bloomsbury",
-                "Le mystère de la Chambre des Secrets...",
-                341,
-                "Anglais",
-                "978-6543210987",
-                "2023-02-10",
-                "https://link_to_hp_chambre.com"
-            );
-            AddBookToAuthor(
-                jkRowling,
-                "Harry Potter et le prisonnier d'Azkaban",
-                "dotnet_bot.svg",
-                new Star(5),
-                StatutDeLecture.Lu,
-                true,
-                false,
-                false,
-                "Bloomsbury",
-                "Le danger rôde autour d'Harry...",
-                435,
-                "Anglais",
-                "978-5432109876",
-                "2023-03-05",
-                "https://link_to_hp_azkaban.com"
-            );
-
-            return Auteurs;
-        }
-
-        private void AddBookToAuthor(
-            Auteur author,
-            string name,
-            string imageBook,
-            Star note,
-            StatutDeLecture statut,
-            bool favori,
-            bool next,
-            bool pret,
-            string maisonEdit,
-            string resumer,
-            int nbPage,
-            string langue,
-            string isbn,
-            string dateAjout,
-            string link
-        )
-        {
-            author.Books.Add(
-                new Book
-                {
-                    Name = name,
-                    ImageBook = imageBook,
-                    Auteur = author,
-                    Note = note,
-                    Statut = statut,
-                    Favori = favori,
-                    Next = next,
-                    Pret = pret,
-                    MaisonEdit = maisonEdit,
-                    Resumer = resumer,
-                    NbPage = nbPage,
-                    Langue = langue,
-                    ISBN = isbn,
-                    dateAjout = dateAjout,
-                    Link = link
-                }
-            );
-        }
-    }
-}
diff --git a/Sources/BookApp/MainPage.xaml b/Sources/BookApp/MainPage.xaml
index 10377b8..b7af3ed 100644
--- a/Sources/BookApp/MainPage.xaml
+++ b/Sources/BookApp/MainPage.xaml
@@ -2,7 +2,9 @@
 <ContentPage
 	xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
 	xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+    xmlns:vm="clr-namespace:BookApp.ViewModel"
     xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"
+    x:Name="ThisPage"
     x:Class="BookApp.MainPage">
     <Shell.TitleView>
         <Grid RowDefinitions="Auto">
@@ -40,106 +42,112 @@
     <StackLayout>
         <Label FontSize="35" FontFamily="SF-Pro-Display-Bold" Padding="10">Mes livres</Label>
         <Rectangle  HeightRequest="1" BackgroundColor="black" VerticalOptions="End" />
-        <CollectionView ItemsSource="{Binding MyCollections1}"  Margin="25,0,0,0" BackgroundColor="#F9F9F9">
-            <CollectionView.ItemTemplate>
-                <DataTemplate>
-                    <Grid RowDefinitions="Auto" >
-                        <Grid.ColumnDefinitions>
-                            <ColumnDefinition Width="25"/>
-                            <ColumnDefinition Width="*"/>
-                            <ColumnDefinition Width="*"/>
-                        </Grid.ColumnDefinitions>
-                        <Image Grid.Column="0"
-                               Source="{Binding Icone}"
-                               HeightRequest="25"
-                               WidthRequest="25"/>
-                        <Label FontFamily="SF-Compact-Display-Semibold" Grid.Column="1"
-                               Text="{Binding Name}"
-                           FontAttributes="Bold"
-                               Padding="5"
-                               VerticalOptions="Center"/>
-                        <Grid Grid.Column="2">
-                            <Grid.ColumnDefinitions>
-                                <ColumnDefinition Width="*"/>
-                                <ColumnDefinition Width="*"/>
-                            </Grid.ColumnDefinitions>
-                            <Label Grid.Column="2"
-                                   Text="{Binding Number}"
-                                   FontAttributes="Bold"
-                                   VerticalOptions="Center"
-                                   Margin="0,0,40,0"
-                                   HorizontalOptions="End"/>
-                            <Button Grid.Column="2"
-                                    ImageSource="chevron_right.svg"
-                                    HeightRequest="35"
-                                    WidthRequest="35"
-                                    BackgroundColor="#F9F9F9"
-                                    Clicked="ButtonTous"
-                                    HorizontalOptions="End"/>
-                        </Grid>
-                        <Rectangle Grid.ColumnSpan="4" HeightRequest="1" BackgroundColor="LightGray" VerticalOptions="End">
-                            <Rectangle.Triggers>
-                                <DataTrigger TargetType="Rectangle" Binding="{Binding IsLastItem}" Value="true">
-                                    <Setter Property="IsVisible" Value="False"/>
-                                </DataTrigger>
-                            </Rectangle.Triggers>
-                        </Rectangle>
-                    </Grid>
-                </DataTemplate>
-            </CollectionView.ItemTemplate>
-        </CollectionView>
-        
+        <CollectionView ItemsSource="{Binding MenuItemsLivre}" Margin="25,0,0,0" BackgroundColor="#F9F9F9">
+            <CollectionView.ItemTemplate>
+                <DataTemplate x:DataType="vm:ViewModelMenuItem">
+                    <Grid RowDefinitions="Auto" Style="{StaticResource StyleCollectionGrid}" Padding="2">
+                        <Grid.GestureRecognizers>
+                            <TapGestureRecognizer Command="{Binding Source={x:Reference ThisPage}, Path=Nav.MenuItemsCommand}"
+                                                  CommandParameter="{Binding .}" NumberOfTapsRequired="1"/>
+                        </Grid.GestureRecognizers>
+                        <Grid.ColumnDefinitions>
+                            <ColumnDefinition Width="25"/>
+                            <ColumnDefinition Width="*"/>
+                            <ColumnDefinition Width="*"/>
+                        </Grid.ColumnDefinitions>
+                        <Image Grid.Column="0"
+                               Source="{Binding Icone}"
+                               HeightRequest="25"
+                               WidthRequest="25"/>
+                        <Label FontFamily="SF-Compact-Display-Semibold" Grid.Column="1"
+                               Text="{Binding Name}"
+                           FontAttributes="Bold"
+                               Padding="5"
+                               VerticalOptions="Center"/>
+                        <Grid Grid.Column="2">
+                            <Grid.ColumnDefinitions>
+                                <ColumnDefinition Width="*"/>
+                                <ColumnDefinition Width="*"/>
+                            </Grid.ColumnDefinitions>
+                            <Label Grid.Column="2"
+                                   Text="{Binding Number}"
+                                   FontAttributes="Bold"
+                                   VerticalOptions="Center"
+                                   Margin="0,0,40,0"
+                                   HorizontalOptions="End"/>
+                            <Image Grid.Column="2"
+                                    Source="chevron_right.svg"
+                                    HeightRequest="25"
+                                    WidthRequest="25"
+                                    HorizontalOptions="End"/>
+                        </Grid>
+                        <Rectangle Grid.ColumnSpan="4" HeightRequest="1" BackgroundColor="LightGray" VerticalOptions="End">
+                            <Rectangle.Triggers>
+                                <DataTrigger TargetType="Rectangle" Binding="{Binding IsLastItem}" Value="true">
+                                    <Setter Property="IsVisible" Value="False"/>
+                                </DataTrigger>
+                            </Rectangle.Triggers>
+                        </Rectangle>
+                    </Grid>
+                </DataTemplate>
+            </CollectionView.ItemTemplate>
+        </CollectionView>
+
+
         <Rectangle  HeightRequest="1" BackgroundColor="black" VerticalOptions="End"/>
         <Label FontFamily="SF-Pro-Display-Heavy" FontSize="20" Padding="10">Filtres</Label>
         <Rectangle  HeightRequest="1" BackgroundColor="black" VerticalOptions="End"/>
 
-        <CollectionView ItemsSource="{Binding MyCollections2}" Margin="25,0,0,0" BackgroundColor="#F9F9F9">
-            <CollectionView.ItemTemplate>
-                <DataTemplate>
-                    <Grid RowDefinitions="Auto" >
-                        <Grid.ColumnDefinitions>
-                            <ColumnDefinition Width="25" />
-                            <ColumnDefinition Width="*" />
-                            <ColumnDefinition Width="*" />
-                        </Grid.ColumnDefinitions>
-                        <Image Grid.Column="0"
-                               Source="{Binding Icone}"
-                               HeightRequest="25"
-                               WidthRequest="25"/>
-                        <Label FontFamily="SF-Compact-Display-Semibold" Grid.Column="1"
-                               Text="{Binding Name}"
-                                FontAttributes="Bold"
-                               Padding="5"
-                               VerticalOptions="Center"/>
-                        <Grid Grid.Column="2" >
-                            <Grid.ColumnDefinitions>
-                                <ColumnDefinition Width="*" />
-                                <ColumnDefinition Width="*" />
-                            </Grid.ColumnDefinitions>
-                            <Label FontFamily="SF-Compact-Display-Semibold" Grid.Column="2"
-                                Text="{Binding Number}"
-                                FontAttributes="Bold"
-                                VerticalOptions="Center"
-                                Margin="0,0,40,0"
-                                HorizontalOptions="End"/>
-                            <Button Grid.Column="2"
-                                ImageSource="chevron_right.svg"
-                                HeightRequest="35"
-                                WidthRequest="35"
-                                BackgroundColor="#F9F9F9"
-                                Clicked="ButtonAuteur"
-                                HorizontalOptions="End"/>
-                        </Grid>
-                        <Rectangle Grid.ColumnSpan="4" HeightRequest="1" BackgroundColor="LightGray" VerticalOptions="End">
-                            <Rectangle.Triggers>
-                                <DataTrigger TargetType="Rectangle" Binding="{Binding IsLastItem}" Value="true">
-                                    <Setter Property="IsVisible" Value="False"/>
-                                </DataTrigger>
-                            </Rectangle.Triggers>
-                        </Rectangle>
-                    </Grid>
-                </DataTemplate>
-            </CollectionView.ItemTemplate>
-        </CollectionView>
+        <CollectionView ItemsSource="{Binding MenuItemsFiltre}" Margin="25,0,0,0" BackgroundColor="#F9F9F9">
+            <CollectionView.ItemTemplate>
+                <DataTemplate x:DataType="vm:ViewModelMenuItem">
+                    <Grid RowDefinitions="Auto" Style="{StaticResource StyleCollectionGrid}" Padding="2">
+                        <Grid.GestureRecognizers>
+                            <TapGestureRecognizer Command="{Binding Source={x:Reference ThisPage}, Path=Nav.MenuItemsFiltreCommand}"
+                                                  CommandParameter="{Binding .}" NumberOfTapsRequired="1"/>
+                        </Grid.GestureRecognizers>
+                        <Grid.ColumnDefinitions>
+                            <ColumnDefinition Width="25" />
+                            <ColumnDefinition Width="*" />
+                            <ColumnDefinition Width="*" />
+                        </Grid.ColumnDefinitions>
+                        <Image Grid.Column="0"
+                               Source="{Binding Icone}"
+                               HeightRequest="25"
+                               WidthRequest="25"/>
+                        <Label FontFamily="SF-Compact-Display-Semibold" Grid.Column="1"
+                               Text="{Binding Name}"
+                                FontAttributes="Bold"
+                               Padding="5"
+                               VerticalOptions="Center"/>
+                        <Grid Grid.Column="2" >
+                            <Grid.ColumnDefinitions>
+                                <ColumnDefinition Width="*" />
+                                <ColumnDefinition Width="*" />
+                            </Grid.ColumnDefinitions>
+                            <Label FontFamily="SF-Compact-Display-Semibold" Grid.Column="2"
+                                Text="{Binding Number}"
+                                FontAttributes="Bold"
+                                VerticalOptions="Center"
+                                Margin="0,0,40,0"
+                                HorizontalOptions="End"/>
+                            <Image Grid.Column="2"
+                                Source="chevron_right.svg"
+                                HeightRequest="25"
+                                WidthRequest="25"
+                                HorizontalOptions="End"/>
+                        </Grid>
+                        <Rectangle Grid.ColumnSpan="4" HeightRequest="1" BackgroundColor="LightGray" VerticalOptions="End">
+                            <Rectangle.Triggers>
+                                <DataTrigger TargetType="Rectangle" Binding="{Binding IsLastItem}" Value="true">
+                                    <Setter Property="IsVisible" Value="False"/>
+                                </DataTrigger>
+                            </Rectangle.Triggers>
+                        </Rectangle>
+                    </Grid>
+                </DataTemplate>
+            </CollectionView.ItemTemplate>
+        </CollectionView>
+
     </StackLayout>
 </ContentPage>
diff --git a/Sources/BookApp/MainPage.xaml.cs b/Sources/BookApp/MainPage.xaml.cs
index 8a7d433..c7db836 100644
--- a/Sources/BookApp/MainPage.xaml.cs
+++ b/Sources/BookApp/MainPage.xaml.cs
@@ -1,59 +1,18 @@
 using BookApp.Pages;
 using System.Collections.ObjectModel;
+using BookApp.ViewModel;
+using System.Diagnostics;
 
 namespace BookApp
 {
     public partial class MainPage : ContentPage
     {
-        public class ObjetTemp
-        {
-            public string Name { get; set; }
-            public string Icone { get; set; }
-            public int Number { get; set; }
-            public bool IsLastItem { get; set; }
-
-            public ObjetTemp(string name, string icone, int number, bool isLastItem = false)
-            {
-                Name = name;
-                Icone = icone;
-                Number = number;
-                IsLastItem = isLastItem;
-            }
-        }
+        public ViewModelNavigation Nav { get; } = new ViewModelNavigation();
 
-        public ObservableCollection<ObjetTemp> MyCollections1 { get; set; }
-        public ObservableCollection<ObjetTemp> MyCollections2 { get; set; }
-
-        public MainPage()
+        public MainPage(ViewModelMenu data)
         {
             InitializeComponent();
-            MyCollections1 = new ObservableCollection<ObjetTemp>()
-            {
-                new ObjetTemp("Tous", "./Reources/Images/tray_2_fill.svg", 250),
-                new ObjetTemp("En prêt", "./Reources/Images/person_badge_clock_fill.svg", 250),
-                new ObjetTemp("À lire plus tard", "./Reources/Images/arrow_forward.svg", 250),
-                new ObjetTemp("Statut de lecture", "./Reources/Images/eyeglasses.svg", 250),
-                new ObjetTemp("Favoris", "./Reources/Images/heart_fill.svg", 250),
-                new ObjetTemp("Étiquettes", "./Reources/Images/tag_fill.svg", 250, true),
-            };
-
-            MyCollections2 = new ObservableCollection<ObjetTemp>()
-            {
-                new ObjetTemp("Auteur", "./Reources/Images/person_fill.svg", 250),
-                new ObjetTemp("Date de publication", "./Reources/Images/calendar.svg", 250),
-                new ObjetTemp("Note", "./Reources/Images/sparkles.svg", 250, true),
-            };
-            BindingContext = this;
-        }
-
-        async void ButtonTous(object sender, EventArgs args)
-        {
-            await Shell.Current.GoToAsync("TousPage");
-        }
-
-        async void ButtonAuteur(object sender, EventArgs args)
-        {
-            await Shell.Current.GoToAsync("FiltragePage");
+            BindingContext = data;
         }
     }
 }
diff --git a/Sources/BookApp/MauiProgram.cs b/Sources/BookApp/MauiProgram.cs
index 328f4bd..146c6a0 100644
--- a/Sources/BookApp/MauiProgram.cs
+++ b/Sources/BookApp/MauiProgram.cs
@@ -1,6 +1,12 @@
-using CommunityToolkit.Maui;
+using BookApp.Composants;
+using BookApp.Pages;
+using BookApp.ViewModel;
+using CommunityToolkit.Maui;
 using Microsoft.Extensions.Logging;
+using Model;
 using SimpleRatingControlMaui;
+using StubLib;
+using VMWrapper;
 
 namespace BookApp
 {
@@ -22,6 +28,23 @@ namespace BookApp
 #if DEBUG
             builder.Logging.AddDebug();
 #endif
+            builder.Services.AddSingleton<ILibraryManager, LibraryStub>();
+            builder.Services.AddSingleton<IUserLibraryManager, UserLibraryStub>();
+            builder.Services.AddSingleton<BooksViewModel>();
+            builder.Services.AddSingleton<FilterViewModel>();
+            builder.Services.AddSingleton<DetailBookViewModel>();
+            builder.Services.AddSingleton<ViewModelDetailProvider>();
+
+            builder.Services.AddSingleton<ViewModelNavigation>();
+            builder.Services.AddSingleton<ViewModelMenu>();
+
+            builder.Services.AddSingleton<DetailBook>();
+            builder.Services.AddSingleton<GroupCollection>();
+            builder.Services.AddSingleton<CollectionFiltrage>();
+            builder.Services.AddSingleton<Filtrage>();
+            builder.Services.AddSingleton<Tous>();
+            builder.Services.AddSingleton<MainPage>();
+            builder.Services.AddSingleton<EmpruntsPrets>();
 
             return builder.Build();
         }
diff --git a/Sources/BookApp/Model/Auteur.cs b/Sources/BookApp/Model/Auteur.cs
deleted file mode 100644
index 996e499..0000000
--- a/Sources/BookApp/Model/Auteur.cs
+++ /dev/null
@@ -1,15 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Collections.ObjectModel;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace BookApp.Model
-{
-    public class Auteur
-    {
-        public string Name { get; set; }
-        public ObservableCollection<Book> Books { get; set; }
-    }
-}
diff --git a/Sources/BookApp/Model/Book.cs b/Sources/BookApp/Model/Book.cs
deleted file mode 100644
index 2dee355..0000000
--- a/Sources/BookApp/Model/Book.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-namespace BookApp.Model
-{
-    public class Book
-    {
-        public string Name { get; set; }
-        public string ImageBook { get; set; }
-        public Auteur Auteur { get; set; }
-        public Star Note { get; set; }
-        public StatutDeLecture Statut { get; set; }
-        public bool Favori { get; set; }
-        public bool Next { get; set; }
-        public bool Pret { get; set; }
-        public string MaisonEdit { get; set; }
-        public string Resumer { get; set; }
-        public int NbPage { get; set; }
-        public string Langue { get; set; }
-        public string ISBN { get; set; }
-        public string dateAjout { get; set; }
-        public string Link { get; set; }
-    }
-}
diff --git a/Sources/BookApp/Model/Person.cs b/Sources/BookApp/Model/Person.cs
deleted file mode 100644
index d698756..0000000
--- a/Sources/BookApp/Model/Person.cs
+++ /dev/null
@@ -1,14 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace BookApp.Model
-{
-    public class Person
-    {
-        public int Id { get; set; }
-        public string Name { get; set; }
-    }
-}
diff --git a/Sources/BookApp/Model/Star.cs b/Sources/BookApp/Model/Star.cs
deleted file mode 100644
index 199d9c7..0000000
--- a/Sources/BookApp/Model/Star.cs
+++ /dev/null
@@ -1,27 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace BookApp.Model
-{
-    public class Star
-    {
-        public static int MaxStars { get; private set; } = 5;
-        public int CurrentRating { get; private set; }
-
-        public Star(int rating)
-        {
-            if (rating < 0 || rating > MaxStars)
-                throw new ArgumentOutOfRangeException("Rating should be between 0 and MaxStars.");
-
-            CurrentRating = rating;
-        }
-
-        public IEnumerable<int> Rating
-        {
-            get { return Enumerable.Range(0, MaxStars); }
-        }
-    }
-}
diff --git a/Sources/BookApp/Model/Status.cs b/Sources/BookApp/Model/Status.cs
deleted file mode 100644
index 1d34df7..0000000
--- a/Sources/BookApp/Model/Status.cs
+++ /dev/null
@@ -1,15 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace BookApp.Model
-{
-    public enum StatutDeLecture
-    {
-        Lu,
-        A_Lire,
-        Non_Lu
-    }
-}
diff --git a/Sources/BookApp/Pages/DetailBook.xaml b/Sources/BookApp/Pages/DetailBook.xaml
index f520bef..4b73472 100644
--- a/Sources/BookApp/Pages/DetailBook.xaml
+++ b/Sources/BookApp/Pages/DetailBook.xaml
@@ -3,7 +3,11 @@
 	xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
 	xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
 	xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"
+    xmlns:vm="clr-namespace:BookApp.ViewModel"
+    xmlns:usecase="clr-namespace:BookApp.UseCase" 
+    x:Name="ThisPage"
     x:Class="BookApp.Pages.DetailBook">
+
     <Shell.BackButtonBehavior>
         <BackButtonBehavior IsVisible="False" IsEnabled="False"/>
     </Shell.BackButtonBehavior>
@@ -18,7 +22,8 @@
                 Source="Chevron_left.svg" 
                 HorizontalOptions="Start">
                     <Image.GestureRecognizers>
-                        <TapGestureRecognizer Tapped="BackButton" NumberOfTapsRequired="1"/>
+                        <TapGestureRecognizer 
+                           Command="{Binding Source={x:Reference ThisPage}, Path=Nav.BackButtonCommand}" NumberOfTapsRequired="1"/>
                     </Image.GestureRecognizers>
                     <Image.Behaviors>
                         <toolkit:IconTintColorBehavior TintColor="Red" />
@@ -45,6 +50,13 @@
             Grid.Column="1" />
         </Grid>
     </Shell.TitleView>
+
+    <ContentPage.Resources>
+        <ResourceDictionary>
+            <usecase:AuthorsListToStringConverter x:Key="authorsConverter"/>
+        </ResourceDictionary>
+    </ContentPage.Resources>
+    
     <ContentPage.Content>
         <ScrollView>
             <StackLayout>
@@ -54,9 +66,9 @@
                         <ColumnDefinition Width="125"/>
                         <ColumnDefinition Width="*"/>
                     </Grid.ColumnDefinitions>
-                    <Image Margin="10,10,10,0" Grid.Column="0"  Source="{Binding BookDetail.ImageBook}"/>
+                    <Image Margin="10,10,10,0" Grid.Column="0"  Source="{Binding BookDetail.ImageLarge}"/>
                     <StackLayout Grid.Column="1">
-                        <Label FontAttributes="Bold" FontSize="20" Text="{Binding BookDetail.Name}"/>
+                        <Label FontAttributes="Bold" FontSize="20" Text="{Binding BookDetail.Title }"/>
                         <Grid RowDefinitions="auto" VerticalOptions="EndAndExpand">
                             <Grid.ColumnDefinitions>
                                 <ColumnDefinition Width="*"/>
@@ -81,13 +93,13 @@
                 </Grid>
                 <Rectangle Margin="25,0,0,10" HeightRequest="1" BackgroundColor="LightGray" VerticalOptions="End"/>
                 <Label FontAttributes="Bold" Margin="25,0,0,0" VerticalTextAlignment="Center"  Text="Auteur"/>
-                <Label Margin="25,0,0,0" VerticalTextAlignment="Center"  Text="{Binding BookDetail.Auteur.Name}"/>
+                <Label Margin="25,0,0,0" VerticalTextAlignment="Center"  Text="{Binding BookDetail.Authors, Converter={StaticResource authorsConverter}}"/>
                 <Rectangle Margin="25,10,0,10" HeightRequest="1" BackgroundColor="LightGray" VerticalOptions="End"/>
                 <Label FontAttributes="Bold" Margin="25,0,0,0" VerticalTextAlignment="Center"  Text="Maison d'édition"/>
-                <Label Margin="25,0,0,0" VerticalTextAlignment="Center"  Text="{Binding BookDetail.MaisonEdit}"/>
+                <Label Margin="25,0,0,0" VerticalTextAlignment="Center"  Text="{Binding BookDetail.Authors}"/>
                 <Rectangle Margin="25,10,0,10" HeightRequest="1" BackgroundColor="LightGray" VerticalOptions="End"/>
                 <Label FontAttributes="Bold" Margin="25,0,0,0" VerticalTextAlignment="Center"   Text="Résumer"/>
-                <Label  Margin="25,0,0,0" VerticalTextAlignment="Center" Text="Le Lorem Ipsum est simplement du faux texte employé dans la composition et la mise en page avant impression. Le Lorem Ipsum est le faux texte standard de l'imprimerie depuis les années 1500, quand un imprimeur anonyme assembla ensemble des morceaux de texte pour réaliser un livre spécimen de polices de texte. Il n'a pas fait que survivre cinq siècles, mais s'est aussi adapté à la bureautique informatique, sans que son contenu n'en soit modifié. Il a été popularisé dans les années 1960 grâce à la vente de feuilles Letraset contenant des passages du Lorem Ipsum, et, plus récemment, par son inclusion dans des applications de mise en page de texte, comme Aldus PageMaker."/>
+                <Label  Margin="25,0,0,0" VerticalTextAlignment="Center" Text="{Binding BookDetail.Format}"/>
                 <Rectangle Margin="25,10,0,10" HeightRequest="1" BackgroundColor="LightGray" VerticalOptions="End" />
                 <Label FontAttributes="Bold" Margin="25,0,0,0" VerticalTextAlignment="Center" Text="Details"/>
                 <Grid Margin="25,0,20,0">
@@ -101,11 +113,11 @@
                         <ColumnDefinition Width="*"/>
                     </Grid.ColumnDefinitions>
                     <Label Grid.Row="0" Grid.Column="0" Text="Nombre de pages"/>
-                    <Label Grid.Row="0" Grid.Column="1" HorizontalTextAlignment="End" Text="{Binding BookDetail.NbPage}"/>
+                    <Label Grid.Row="0" Grid.Column="1" HorizontalTextAlignment="End" Text="{Binding BookDetail.NbPages}"/>
                     <Label Grid.Row="1" Grid.Column="0" Text="Langue"/>
-                    <Label Grid.Row="1" Grid.Column="1" HorizontalTextAlignment="End" Text="{Binding BookDetail.Langue}"/>
+                    <Label Grid.Row="1" Grid.Column="1" HorizontalTextAlignment="End" Text="{Binding BookDetail.Language}"/>
                     <Label Grid.Row="2" Grid.Column="0" Text="ISBN"/>
-                    <Label Grid.Row="2" Grid.Column="1" HorizontalTextAlignment="End" Text="{Binding BookDetail.ISBN}"/>
+                    <Label Grid.Row="2" Grid.Column="1" HorizontalTextAlignment="End" Text="{Binding BookDetail.Status}"/>
                 </Grid>
                 <Rectangle Margin="25,10,0,10" HeightRequest="1" BackgroundColor="LightGray" VerticalOptions="End" />
                 <Label FontAttributes="Bold" Margin="25,0,0,0" VerticalTextAlignment="Center" Text="Status de lecture"/>
@@ -115,7 +127,7 @@
                         <ColumnDefinition Width="*"/>
                     </Grid.ColumnDefinitions>
                     <Label Grid.Column="0" Text="Status"/>
-                    <Label Grid.Column="1" HorizontalTextAlignment="End" Text="{Binding BookDetail.Statut}"/>
+                    <Label Grid.Column="1" HorizontalTextAlignment="End" Text="{Binding BookDetail.Status}"/>
                 </Grid>
                 <Rectangle Margin="25,10,0,10" HeightRequest="1" BackgroundColor="LightGray" VerticalOptions="End" />
                 <Label FontAttributes="Bold" Margin="25,0,0,0" VerticalTextAlignment="Center" Text="biliothèque"/>
@@ -125,7 +137,7 @@
                         <ColumnDefinition Width="*"/>
                     </Grid.ColumnDefinitions>
                     <Label Grid.Column="0" Text="Ajouter le"/>
-                    <Label Grid.Column="1" HorizontalTextAlignment="End" Text="{Binding BookDetail.dateAjout}"/>
+                    <Label Grid.Column="1" HorizontalTextAlignment="End" Text="{Binding BookDetail.PublishDate}"/>
                 </Grid>
                 <Rectangle Margin="25,10,0,10" HeightRequest="1" BackgroundColor="LightGray" VerticalOptions="End" />
                 <Rectangle HeightRequest="100" Fill="Transparent"/>
@@ -163,6 +175,9 @@
                         <ColumnDefinition Width="25"/>
                         <ColumnDefinition Width="*"/>
                     </Grid.ColumnDefinitions>
+                    <Grid.GestureRecognizers>
+                        <TapGestureRecognizer Command="{Binding PopUpCommand}" NumberOfTapsRequired="1"/>
+                    </Grid.GestureRecognizers>
                     <Image Grid.Column="0" HeightRequest="25"
                         WidthRequest="25" Source="eyeglasses.svg">
                         <Image.Behaviors>
diff --git a/Sources/BookApp/Pages/DetailBook.xaml.cs b/Sources/BookApp/Pages/DetailBook.xaml.cs
index c11094d..255c033 100644
--- a/Sources/BookApp/Pages/DetailBook.xaml.cs
+++ b/Sources/BookApp/Pages/DetailBook.xaml.cs
@@ -1,68 +1,16 @@
-using BookApp.Model;
-using System.Collections.ObjectModel;
+using BookApp.ViewModel;
+using System.Diagnostics;
 
-namespace BookApp.Pages;
-
-public partial class DetailBook : ContentPage
+namespace BookApp.Pages
 {
-    private int maxStars = 5;
-    private int currentRating = 0;
-
-    public Book BookDetail { get; set; }
-
-    public DetailBook(Book ItemBook)
-    {
-        InitializeComponent();
-
-        for (int i = 1; i <= maxStars; i++)
-        {
-            var star = new Image
-            {
-                Source = "empty_star.svg", // image d'une étoile vide
-                WidthRequest = 25,
-                HeightRequest = 25
-            };
-
-            int currentStar = i;
-
-            star.GestureRecognizers.Add(
-                new TapGestureRecognizer { Command = new Command(() => StarTapped(currentStar)), }
-            );
-            StarLayout.Children.Add(star);
-        }
-
-        UpdateStars();
-        BookDetail = ItemBook;
-        BindingContext = this;
-    }
-
-    private void StarTapped(int rating)
+    public partial class DetailBook : ContentPage
     {
-        if (rating > maxStars)
-        {
-            System.Diagnostics.Debug.WriteLine("Erreur : rating trop élevé!");
-            return;
-        }
-
-        currentRating = rating;
-        UpdateStars();
-        RatingLabel.Text = $"Note: {currentRating}/{maxStars}";
-    }
+        public ViewModelNavigation Nav { get; } = new ViewModelNavigation();
 
-    private void UpdateStars()
-    {
-        for (int i = 0; i < maxStars; i++)
+        public DetailBook(ViewModelDetailProvider VMProvider)
         {
-            var star = (Image)StarLayout.Children[i];
-            if (i < currentRating)
-                star.Source = "filled_star.svg"; // image d'une étoile remplie
-            else
-                star.Source = "empty_star.svg";
+            InitializeComponent();
+            BindingContext = VMProvider;
         }
     }
-
-    async void BackButton(object sender, EventArgs args)
-    {
-        await Shell.Current.Navigation.PopAsync();
-    }
 }
diff --git a/Sources/BookApp/Pages/EmpruntsPrets.xaml b/Sources/BookApp/Pages/EmpruntsPrets.xaml
index 66669f8..8af46e3 100644
--- a/Sources/BookApp/Pages/EmpruntsPrets.xaml
+++ b/Sources/BookApp/Pages/EmpruntsPrets.xaml
@@ -1,9 +1,10 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
-             x:Class="BookApp.Pages.EmpruntsPrets"
              xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"
-             Title="EmpruntsPrets">
+             xmlns:composants="clr-namespace:BookApp.Composants"
+             x:Name="ThisPage"
+             x:Class="BookApp.Pages.EmpruntsPrets">
     <Shell.BackButtonBehavior>
         <BackButtonBehavior IsVisible="False" IsEnabled="False"/>
     </Shell.BackButtonBehavior>
@@ -19,7 +20,8 @@
                 Source="Chevron_left.svg" 
                 HorizontalOptions="Start">
                     <Image.GestureRecognizers>
-                        <TapGestureRecognizer Tapped="BackButton" NumberOfTapsRequired="1"/>
+                        <TapGestureRecognizer 
+                          Command="{Binding Source={x:Reference ThisPage}, Path=Nav.BackButtonCommand}" NumberOfTapsRequired="1"/>
                     </Image.GestureRecognizers>
                     <Image.Behaviors>
                         <toolkit:IconTintColorBehavior TintColor="Red" />
@@ -68,33 +70,17 @@
             </HorizontalStackLayout>
         </Grid>
     </Shell.TitleView>
-    <StackLayout>
-        <ContentView>
-            <ContentView.GestureRecognizers>
-                <TapGestureRecognizer Command="{Binding TapCommand}" NumberOfTapsRequired="1" />
-            </ContentView.GestureRecognizers>
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="*"/>
+        </Grid.RowDefinitions>
+        <Rectangle  HeightRequest="1" BackgroundColor="LightGray" VerticalOptions="Start" />
+        <composants:ToggleSwitchView Grid.Row="0" VerticalOptions="Center" HorizontalOptions="Center"/>
+        <Rectangle  HeightRequest="1" BackgroundColor="LightGray" VerticalOptions="End" />
 
-            <Grid WidthRequest="150" HeightRequest="50"
-          BackgroundColor="LightGray" 
-          VerticalOptions="Center" 
-          HorizontalOptions="Center">
-
-                <!-- Le Switch -->
-                <Switch x:Name="MySwitch" IsToggled="{Binding IsToggled}" 
-                HorizontalOptions="Start" 
-                VerticalOptions="Center"/>
-
-                <!-- Le Texte -->
-                <Label Text="Mon Switch" 
-               VerticalOptions="Center" 
-               HorizontalOptions="Center" 
-               FontSize="16" 
-               TextColor="Black" />
-
-            </Grid>
-        </ContentView>
-
-
-        <!-- TODO with collection group on personn -->
-    </StackLayout>
+        <ScrollView Grid.Row="1">
+            <composants:GroupCollection/>
+        </ScrollView>
+    </Grid>
 </ContentPage>
\ No newline at end of file
diff --git a/Sources/BookApp/Pages/EmpruntsPrets.xaml.cs b/Sources/BookApp/Pages/EmpruntsPrets.xaml.cs
index eae3847..6bf348b 100644
--- a/Sources/BookApp/Pages/EmpruntsPrets.xaml.cs
+++ b/Sources/BookApp/Pages/EmpruntsPrets.xaml.cs
@@ -1,35 +1,17 @@
+using BookApp.ViewModel;
 using System.Windows.Input;
+using VMWrapper;
 
-namespace BookApp.Pages;
-
-public partial class EmpruntsPrets : ContentPage
+namespace BookApp.Pages
 {
-    public ICommand TapCommand => new Command(ToggleSwitch);
-
-    private bool _isToggled;
-
-    public bool IsToggled
+    public partial class EmpruntsPrets : ContentPage
     {
-        get => _isToggled;
-        set
+        public ViewModelNavigation Nav { get; } = new ViewModelNavigation();
+
+        public EmpruntsPrets(BooksViewModel data)
         {
-            _isToggled = value;
-            OnPropertyChanged();
+            InitializeComponent();
+            BindingContext = data;
         }
     }
-
-    public EmpruntsPrets()
-    {
-        InitializeComponent();
-    }
-
-    async void BackButton(object sender, EventArgs args)
-    {
-        await Shell.Current.Navigation.PopAsync();
-    }
-
-    private void ToggleSwitch()
-    {
-        IsToggled = !IsToggled;
-    }
 }
diff --git a/Sources/BookApp/Pages/Filtrage.xaml b/Sources/BookApp/Pages/Filtrage.xaml
index de42150..1b6177b 100644
--- a/Sources/BookApp/Pages/Filtrage.xaml
+++ b/Sources/BookApp/Pages/Filtrage.xaml
@@ -4,6 +4,7 @@
 	xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
     xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"
     xmlns:composants="clr-namespace:BookApp.Composants"
+    x:Name="ThisPage"
     x:Class="BookApp.Pages.Filtrage">
     <Shell.BackButtonBehavior>
         <BackButtonBehavior IsVisible="False" IsEnabled="False"/>
@@ -20,25 +21,17 @@
                 Source="Chevron_left.svg" 
                 HorizontalOptions="Start">
                     <Image.GestureRecognizers>
-                        <TapGestureRecognizer Tapped="BackButton" NumberOfTapsRequired="1"/>
+                        <TapGestureRecognizer 
+                         Command="{Binding Source={x:Reference ThisPage}, Path=Nav.BackButtonCommand}" NumberOfTapsRequired="1"/>
                     </Image.GestureRecognizers>
                     <Image.Behaviors>
                         <toolkit:IconTintColorBehavior TintColor="Red" />
                     </Image.Behaviors>
                 </Image>
-
-                <Label
-             Text="Auteur"
-             FontFamily="Strande2"
-             TextColor="Red"
-             FontSize="Medium"
-             VerticalTextAlignment="Center"
-             HorizontalOptions="Start"
-             Grid.Column="0" />
             </HorizontalStackLayout>
 
             <Label
-            Text="Tous"
+            Text="{Binding Source={x:Reference ThisPage}, Path=Title}"
             FontFamily="Strande2"
             TextColor="Black"
             FontSize="Medium"
@@ -52,6 +45,12 @@
             HorizontalOptions="End"
             Margin="0,0,10,0"
             Grid.Column="2">
+                    <Image.GestureRecognizers>
+                        <TapGestureRecognizer 
+                        Command="{Binding SortCommand }" 
+                        CommandParameter="name"
+                        NumberOfTapsRequired="1"/>
+                    </Image.GestureRecognizers>
                     <Image.Behaviors>
                         <toolkit:IconTintColorBehavior TintColor="Red" />
                     </Image.Behaviors>
@@ -62,9 +61,11 @@
     <ContentPage.Content>
         <StackLayout>
             <Rectangle HeightRequest="1" BackgroundColor="LightGray"/>
-            <SearchBar Placeholder="Search items..."/>
-            <Rectangle HeightRequest="1" BackgroundColor="LightGray"/>
-            <composants:CollectionFiltrage  VerticalOptions="FillAndExpand"/>
+            <SearchBar Placeholder="Rechercher des auteurs..."
+                       Text="{Binding SearchQuery, Mode=TwoWay}"
+                       SearchCommand="{Binding SearchCommand}"
+                       SearchCommandParameter="{Binding Text, Source={x:Reference Name=SearchBar}}"/>
+            <composants:CollectionFiltrage/>
         </StackLayout>
     </ContentPage.Content>
 </ContentPage>
\ No newline at end of file
diff --git a/Sources/BookApp/Pages/Filtrage.xaml.cs b/Sources/BookApp/Pages/Filtrage.xaml.cs
index 3519c1f..68d9e10 100644
--- a/Sources/BookApp/Pages/Filtrage.xaml.cs
+++ b/Sources/BookApp/Pages/Filtrage.xaml.cs
@@ -1,19 +1,20 @@
 using BookApp.ViewModel;
+using System.Diagnostics;
+using VMWrapper;
 
 namespace BookApp.Pages
 {
+    [QueryProperty(nameof(Title), "Title")]
     public partial class Filtrage : ContentPage
     {
-        SearchBar searchBar = new SearchBar { Placeholder = "Search items..." };
+        private readonly string Title;
 
-        public Filtrage()
-        {
-            InitializeComponent();
-        }
+        public ViewModelNavigation Nav { get; } = new ViewModelNavigation();
 
-        async void BackButton(object sender, EventArgs args)
+        public Filtrage(FilterViewModel data)
         {
-            await Shell.Current.Navigation.PopAsync();
+            InitializeComponent();
+            BindingContext = data;
         }
     }
 }
diff --git a/Sources/BookApp/Pages/Tous.xaml b/Sources/BookApp/Pages/Tous.xaml
index e22f392..0b6cfe7 100644
--- a/Sources/BookApp/Pages/Tous.xaml
+++ b/Sources/BookApp/Pages/Tous.xaml
@@ -2,8 +2,9 @@
 <ContentPage
 	xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
 	xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
-	xmlns:composants="clr-namespace:BookApp.Composants"
 	xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"
+	xmlns:composants="clr-namespace:BookApp.Composants"
+    x:Name="ThisPage"
     x:Class="BookApp.Pages.Tous">
     <Shell.BackButtonBehavior>
         <BackButtonBehavior IsVisible="False" IsEnabled="False"/>
@@ -20,7 +21,8 @@
                     Source="Chevron_left.svg" 
                     HorizontalOptions="Start">
                     <Image.GestureRecognizers>
-                        <TapGestureRecognizer Tapped="BackButton" NumberOfTapsRequired="1"/>
+                        <TapGestureRecognizer 
+                            Command="{Binding Source={x:Reference ThisPage}, Path=Nav.BackButtonCommand}" NumberOfTapsRequired="1"/>
                     </Image.GestureRecognizers>
                     <Image.Behaviors>
                         <toolkit:IconTintColorBehavior TintColor="Red" />
diff --git a/Sources/BookApp/Pages/Tous.xaml.cs b/Sources/BookApp/Pages/Tous.xaml.cs
index 260467d..b4fa6aa 100644
--- a/Sources/BookApp/Pages/Tous.xaml.cs
+++ b/Sources/BookApp/Pages/Tous.xaml.cs
@@ -1,18 +1,18 @@
 using BookApp.ViewModel;
+using System.Collections.ObjectModel;
+using System.Diagnostics;
+using VMWrapper;
 
 namespace BookApp.Pages
 {
     public partial class Tous : ContentPage
     {
-        public Tous()
-        {
-            InitializeComponent();
-            BindingContext = new TousViewModel();
-        }
+        public ViewModelNavigation Nav { get; } = new ViewModelNavigation();
 
-        async void BackButton(object sender, EventArgs args)
+        public Tous(BooksViewModel data)
         {
-            await Shell.Current.Navigation.PopAsync();
+            InitializeComponent();
+            BindingContext = data;
         }
     }
 }
diff --git a/Sources/BookApp/Resources/Images/delete.png b/Sources/BookApp/Resources/Images/delete.png
new file mode 100644
index 0000000..2cf2d3a
Binary files /dev/null and b/Sources/BookApp/Resources/Images/delete.png differ
diff --git a/Sources/BookApp/Resources/Images/favorite.png b/Sources/BookApp/Resources/Images/favorite.png
new file mode 100644
index 0000000..70fec82
Binary files /dev/null and b/Sources/BookApp/Resources/Images/favorite.png differ
diff --git a/Sources/BookApp/Resources/Styles/Colors.xaml b/Sources/BookApp/Resources/Styles/Colors.xaml
index 57155fd..7ceac1f 100644
--- a/Sources/BookApp/Resources/Styles/Colors.xaml
+++ b/Sources/BookApp/Resources/Styles/Colors.xaml
@@ -4,11 +4,9 @@
     xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
     xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml">
 
-
     <Color x:Key="BackGroundApp">#F9F9F9</Color>
 
-
-    <Color x:Key="Primary">red</Color>
+    <Color x:Key="Primary">#FB0A10</Color>
     <Color x:Key="Secondary">#DFD8F7</Color>
     <Color x:Key="Tertiary">#2B0B98</Color>
     <Color x:Key="White">White</Color>
@@ -18,6 +16,7 @@
     <Color x:Key="Gray300">#ACACAC</Color>
     <Color x:Key="Gray400">#919191</Color>
     <Color x:Key="Gray500">#6E6E6E</Color>
+    <Color x:Key="Gray550">#595959</Color>
     <Color x:Key="Gray600">#404040</Color>
     <Color x:Key="Gray900">#212121</Color>
     <Color x:Key="Gray950">#141414</Color>
@@ -45,4 +44,43 @@
     <Color x:Key="Blue200Accent">#72ACF1</Color>
     <Color x:Key="Blue300Accent">#A7CBF6</Color>
 
-</ResourceDictionary>
\ No newline at end of file
+    <Color x:Key="DividerLight">#E1E1E1</Color>
+    <Color x:Key="DividerDark">#3D3C41</Color>
+    <Color x:Key="StarOnLight">Orange</Color>
+    <Color x:Key="StarOnDark">Orange</Color>
+    <Color x:Key="StarOffLight">#E1E1E1</Color>
+    <Color x:Key="StarOffDark">#717171</Color>
+    <Color x:Key="ChevronLight">#C5C5C7</Color>
+    <Color x:Key="ChevronDark">#59585D</Color>
+    <Color x:Key="BookDataLight">#6E6E6E</Color>
+    <Color x:Key="BookDataDark">#AAAAAA</Color>
+    <Color x:Key="groupHeaderLabelLight">#807F84</Color>
+    <Color x:Key="groupHeaderLabelDark">#9998A0</Color>
+    <Color x:Key="groupHeaderBackgroundLight">#F1F1F6</Color>
+    <Color x:Key="groupHeaderBackgroundDark">#1C1C1E</Color>
+    <Color x:Key="bookItemStatusLight">#6E6E6E</Color>
+    <Color x:Key="bookItemStatusDark">#87878C</Color>
+    <Color x:Key="indexScrollLight">#3378F7</Color>
+    <Color x:Key="indexScrollDark">#3686F8</Color>
+    <Color x:Key="scanMenuBackgroundLight">#F4F4F4</Color>
+    <Color x:Key="scanMenuBackgroundDark">#262626</Color>
+    <Color x:Key="scanMenuTitleLight">#C8C8C8</Color>
+    <Color x:Key="scanMenuTitleDark">#9E9F13</Color>
+    <Color x:Key="scanMenuDividerLight">#C8C8C8</Color>
+    <Color x:Key="scanMenuDividerDark">#726D6A</Color>
+    <Color x:Key="scanMenuStrongDividerLight">#C8C8C8</Color>
+    <Color x:Key="scanMenuStrongDividerDark">#242424</Color>
+    <Color x:Key="filterCountColorLight">#919191</Color>
+    <Color x:Key="filterCountColorDark">#99989E</Color>
+    <Color x:Key="filterDividerLight">#E1E1E1</Color>
+    <Color x:Key="filterDividerDark">#3C3B41</Color>
+    <Color x:Key="selectorBackgroundLight">#E1E1E1</Color>
+    <Color x:Key="selectorBackgroundDark">#323137</Color>
+    <Color x:Key="selectorSelectedLight">White</Color>
+    <Color x:Key="selectorSelectedDark">#6A696F</Color>
+    <Color x:Key="selectorLabelLight">Black</Color>
+    <Color x:Key="selectorLabelDark">#FDFDFD</Color>
+    <Color x:Key="filterMenuLight">#F8F8F8</Color>
+    <Color x:Key="filterMenuDark">#1C1C1E</Color>
+
+</ResourceDictionary>
diff --git a/Sources/BookApp/Resources/Styles/Styles.xaml b/Sources/BookApp/Resources/Styles/Styles.xaml
index ae4250e..214f04c 100644
--- a/Sources/BookApp/Resources/Styles/Styles.xaml
+++ b/Sources/BookApp/Resources/Styles/Styles.xaml
@@ -2,9 +2,75 @@
 <?xaml-comp compile="true" ?>
 <ResourceDictionary 
     xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
-    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml">
+    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+    xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit">
 
-     <Style TargetType="ActivityIndicator">
+    <Style TargetType="Border" x:Key="selectorItemSelectedStyle">
+        <Setter Property="Stroke" Value="Transparent"/>
+        <Setter Property="HorizontalOptions" Value="Center"/>
+        <Setter Property="VerticalOptions" Value="CenterAndExpand"/>
+        <Setter Property="BackgroundColor" Value="{AppThemeBinding Light={StaticResource selectorSelectedLight}, Dark={StaticResource selectorSelectedDark}}"/>
+        <Setter Property="HeightRequest" Value="29"/>
+        <Setter Property="WidthRequest" Value="108"/>
+        <Setter Property="StrokeShape">
+            <RoundRectangle CornerRadius="6"/>
+        </Setter>
+    </Style>
+
+    <Style TargetType="Label" x:Key="selectorLabelStyle">
+        <Setter Property="BackgroundColor" Value="Transparent"/>
+        <Setter Property="VerticalOptions" Value="Center"/>
+        <Setter Property="HorizontalOptions" Value="Center"/>
+        <Setter Property="FontFamily" Value="SF Pro Display Regular"/>
+        <Setter Property="TextColor" Value="{AppThemeBinding Light={StaticResource selectorLabelLight}, Dark={StaticResource selectorLabelDark}}"/>
+    </Style>
+
+    <Style TargetType="Border" x:Key="selector2Style">
+        <Setter Property="Stroke" Value="Transparent"/>
+        <Setter Property="HorizontalOptions" Value="Center"/>
+        <Setter Property="VerticalOptions" Value="Center"/>
+        <Setter Property="Margin" Value="0, 15"/>
+        <Setter Property="HeightRequest" Value="33"/>
+        <Setter Property="WidthRequest" Value="222"/>
+        <Setter Property="BackgroundColor" Value="{AppThemeBinding Light={StaticResource selectorBackgroundLight}, Dark={StaticResource selectorBackgroundDark}}"/>
+        <Setter Property="StrokeShape">
+            <RoundRectangle CornerRadius="8"/>
+        </Setter>
+    </Style>
+
+    <Style x:Key="StyleCollectionStack" TargetType="SwipeView">
+        <Setter Property="VisualStateManager.VisualStateGroups">
+            <VisualStateGroupList>
+                <VisualStateGroup x:Name="CommonStates">
+                    <VisualState x:Name="Normal" />
+                    <VisualState x:Name="Selected">
+                        <VisualState.Setters>
+                            <Setter Property="BackgroundColor"
+                                            Value="Transparent" />
+                        </VisualState.Setters>
+                    </VisualState>
+                </VisualStateGroup>
+            </VisualStateGroupList>
+        </Setter>
+    </Style>
+
+    <Style x:Key="StyleCollectionGrid" TargetType="Grid">
+        <Setter Property="VisualStateManager.VisualStateGroups">
+            <VisualStateGroupList>
+                <VisualStateGroup x:Name="CommonStates">
+                    <VisualState x:Name="Normal" />
+                    <VisualState x:Name="Selected">
+                        <VisualState.Setters>
+                            <Setter Property="BackgroundColor"
+                                            Value="Transparent" />
+                        </VisualState.Setters>
+                    </VisualState>
+                </VisualStateGroup>
+            </VisualStateGroupList>
+        </Setter>
+    </Style>
+
+    <Style TargetType="ActivityIndicator">
         <Setter Property="Color" Value="{AppThemeBinding Light={StaticResource Primary}, Dark={StaticResource White}}" />
     </Style>
 
diff --git a/Sources/BookApp/UseCase/AuthorsListToStringConverter.cs b/Sources/BookApp/UseCase/AuthorsListToStringConverter.cs
new file mode 100644
index 0000000..c48d1f0
--- /dev/null
+++ b/Sources/BookApp/UseCase/AuthorsListToStringConverter.cs
@@ -0,0 +1,33 @@
+using Model;
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookApp.UseCase
+{
+    public class AuthorsListToStringConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value is List<Author> authorsList && authorsList.Any())
+            {
+                return string.Join(", ", authorsList.Select(a => a.Name));
+            }
+
+            return string.Empty;
+        }
+
+        public object ConvertBack(
+            object value,
+            Type targetType,
+            object parameter,
+            CultureInfo culture
+        )
+        {
+            throw new NotImplementedException();
+        }
+    }
+}
diff --git a/Sources/BookApp/ViewModel/TousViewModel.cs b/Sources/BookApp/ViewModel/TousViewModel.cs
deleted file mode 100644
index a5e9a68..0000000
--- a/Sources/BookApp/ViewModel/TousViewModel.cs
+++ /dev/null
@@ -1,32 +0,0 @@
-using BookApp.Data;
-using BookApp.Model;
-using System.Collections.ObjectModel;
-
-namespace BookApp.ViewModel
-{
-    public class TousViewModel
-    {
-        public class AuteurGroup : ObservableCollection<Book>
-        {
-            public string Name { get; private set; }
-
-            public AuteurGroup(string name, ObservableCollection<Book> books)
-                : base(books)
-            {
-                Name = name;
-            }
-        }
-
-        public ObservableCollection<AuteurGroup> AuteurGroups { get; private set; } =
-            new ObservableCollection<AuteurGroup>();
-
-        public TousViewModel()
-        {
-            ObservableCollection<Auteur> auteurs = new Stub().CreateStubData();
-            foreach (Auteur auteur in auteurs)
-            {
-                AuteurGroups.Add(new AuteurGroup(auteur.Name, auteur.Books));
-            }
-        }
-    }
-}
diff --git a/Sources/BookApp/ViewModel/ViewModelDetailProvider.cs b/Sources/BookApp/ViewModel/ViewModelDetailProvider.cs
new file mode 100644
index 0000000..7632ed2
--- /dev/null
+++ b/Sources/BookApp/ViewModel/ViewModelDetailProvider.cs
@@ -0,0 +1,125 @@
+using Model;
+using System.Diagnostics;
+using System.Threading.Tasks;
+using System.Windows.Input;
+using ToolKit;
+using VMWrapper;
+
+namespace BookApp.ViewModel
+{
+    [QueryProperty(nameof(BookId), "BookId")]
+    public class ViewModelDetailProvider : BaseViewModel
+    {
+        private readonly DetailBookViewModel _detailBookViewModel;
+
+        private string _id;
+        public string BookId
+        {
+            get => _id;
+            set
+            {
+                if (_id != value)
+                {
+                    _id = value;
+                    OnPropertyChanged();
+                    LoadBookDetailAsync(_id);
+                }
+            }
+        }
+
+        private Book _bookDetail;
+        public Book BookDetail
+        {
+            get => _bookDetail;
+            set
+            {
+                _bookDetail = value;
+                OnPropertyChanged();
+            }
+        }
+
+        // Command Pop-up
+        public ICommand _popUpCommand;
+        public ICommand PopUpCommand => _popUpCommand ??= new CommandPersonnal(ShowPopUP);
+
+        public ViewModelDetailProvider(DetailBookViewModel detailBookViewModel)
+        {
+            _detailBookViewModel =
+                detailBookViewModel ?? throw new ArgumentNullException(nameof(detailBookViewModel));
+        }
+
+        private async void ShowPopUP()
+        {
+            string action = await DisplayActionSheet(
+                "Quel est le statut du livre ?",
+                "Cancel",
+                null,
+                "Finished",
+                "Reading",
+                "NotRead",
+                "ToBeRead"
+            );
+            switch (action)
+            {
+                case "Finished":
+                    BookDetail.Status = Status.Finished;
+                    OnPropertyChanged(nameof(BookDetail));
+                    _detailBookViewModel.UpdateColleciton();
+                    break;
+
+                case "Reading":
+                    BookDetail.Status = Status.Reading;
+                    OnPropertyChanged(nameof(BookDetail));
+                    _detailBookViewModel.UpdateColleciton();
+                    break;
+
+                case "NotRead":
+                    BookDetail.Status = Status.NotRead;
+                    OnPropertyChanged(nameof(BookDetail));
+                    _detailBookViewModel.UpdateColleciton();
+                    break;
+
+                case "ToBeRead":
+                    BookDetail.Status = Status.ToBeRead;
+                    OnPropertyChanged(nameof(BookDetail));
+                    _detailBookViewModel.UpdateColleciton();
+                    break;
+
+                default:
+                    BookDetail.Status = Status.Unknown;
+                    OnPropertyChanged(nameof(BookDetail));
+                    break;
+            }
+        }
+
+        public async Task<string> DisplayActionSheet(
+            string title,
+            string cancel,
+            string destruction,
+            params string[] buttons
+        )
+        {
+            return await Application.Current.MainPage.DisplayActionSheet(
+                title,
+                cancel,
+                destruction,
+                buttons
+            );
+        }
+
+        private async void LoadBookDetailAsync(string bookId)
+        {
+            if (string.IsNullOrWhiteSpace(_id))
+                return;
+            try
+            {
+                await _detailBookViewModel.LoadBookDetail(bookId);
+                BookDetail = _detailBookViewModel.BookDetail;
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"An error occurred: {ex.Message}");
+            }
+        }
+    }
+}
diff --git a/Sources/BookApp/ViewModel/ViewModelMenu.cs b/Sources/BookApp/ViewModel/ViewModelMenu.cs
new file mode 100644
index 0000000..bd1850b
--- /dev/null
+++ b/Sources/BookApp/ViewModel/ViewModelMenu.cs
@@ -0,0 +1,67 @@
+using System.Collections.ObjectModel;
+using VMWrapper;
+
+namespace BookApp.ViewModel
+{
+    public class ViewModelMenu
+    {
+        public ObservableCollection<ViewModelMenuItem> MenuItemsLivre { get; set; }
+        public ObservableCollection<ViewModelMenuItem> MenuItemsFiltre { get; set; }
+
+        public ViewModelMenu(BooksViewModel booksViewModel)
+        {
+            MenuItemsLivre = new ObservableCollection<ViewModelMenuItem>()
+            {
+                new ViewModelMenuItem(
+                    "Tous",
+                    "../Resources/Images/tray_2_fill.svg",
+                    booksViewModel.TotalBooks,
+                    "TousPage"
+                ),
+                new ViewModelMenuItem(
+                    "En prêt",
+                    "../Resources/Images/person_badge_clock_fill.svg",
+                    null,
+                    "EmpruntsPretsPage"
+                ),
+                new ViewModelMenuItem(
+                    "À lire plus tard",
+                    "../Resources/Images/arrow_forward.svg",
+                    null,
+                    ""
+                ),
+                new ViewModelMenuItem(
+                    "Statut de lecture",
+                    "../Resources/Images/eyeglasses.svg",
+                    null,
+                    ""
+                ),
+                new ViewModelMenuItem("Favoris", "../Resources/Images/heart_fill.svg", null, ""),
+                new ViewModelMenuItem(
+                    "Étiquettes",
+                    "../Resources/Images/tag_fill.svg",
+                    null,
+                    "",
+                    true
+                ),
+            };
+
+            MenuItemsFiltre = new ObservableCollection<ViewModelMenuItem>()
+            {
+                new ViewModelMenuItem(
+                    "Auteur",
+                    "../Resources/Images/person_fill.svg",
+                    booksViewModel.TotalAuthors,
+                    "FiltragePage"
+                ),
+                new ViewModelMenuItem(
+                    "Date de publication",
+                    "../Resources/Images/calendar.svg",
+                    null,
+                    "FiltragePage"
+                ),
+                new ViewModelMenuItem("Note", "../Resources/Images/sparkles.svg", null, "", true),
+            };
+        }
+    }
+}
diff --git a/Sources/BookApp/ViewModel/ViewModelMenuItem.cs b/Sources/BookApp/ViewModel/ViewModelMenuItem.cs
new file mode 100644
index 0000000..c26a265
--- /dev/null
+++ b/Sources/BookApp/ViewModel/ViewModelMenuItem.cs
@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BookApp.ViewModel
+{
+    public class ViewModelMenuItem
+    {
+        public string Name { get; set; }
+        public string Icone { get; set; }
+        public long? Number { get; set; }
+        public string Route { get; set; }
+        public bool IsLastItem { get; set; }
+
+        public ViewModelMenuItem(
+            string name,
+            string icone,
+            long? number,
+            string route,
+            bool isLastItem = false
+        )
+        {
+            Name = name;
+            Icone = icone;
+            Number = number;
+            Route = route;
+            IsLastItem = isLastItem;
+        }
+    }
+}
diff --git a/Sources/BookApp/ViewModel/ViewModelNavigation.cs b/Sources/BookApp/ViewModel/ViewModelNavigation.cs
new file mode 100644
index 0000000..b2d0d6e
--- /dev/null
+++ b/Sources/BookApp/ViewModel/ViewModelNavigation.cs
@@ -0,0 +1,115 @@
+using ToolKit;
+using System.Windows.Input;
+using System.Diagnostics;
+using Model;
+using System.Net;
+
+namespace BookApp.ViewModel
+{
+    public class ViewModelNavigation : BaseViewModel
+    {
+        public INavigation Navigation { get; set; }
+
+        private string _title;
+        public string Title
+        {
+            get => _title;
+            set
+            {
+                _title = value;
+                OnPropertyChanged();
+            }
+        }
+
+        // Command Pop
+        public ICommand _backButtonCommand;
+        public ICommand BackButtonCommand =>
+            _backButtonCommand ??= new CommandPersonnal(
+                async () => await BackButton(this, EventArgs.Empty)
+            );
+
+        // Command Collection livre
+        public ICommand _bookDetailCommand;
+        public ICommand BookDetailCommand =>
+            _bookDetailCommand ??= new CommandPersonnal<string>(
+                async (book) => await OnToItemDetail(book)
+            );
+
+        // Command Collection menu
+        private ICommand _menuItemsCommand;
+        public ICommand MenuItemsCommand =>
+            _menuItemsCommand ??= new CommandPersonnal<ViewModelMenuItem>(
+                async (item) => await OnItemSelected(item)
+            );
+
+        public ICommand _menuItemsFiltreCommand;
+        public ICommand MenuItemsFiltreCommand =>
+            _menuItemsFiltreCommand ??= new CommandPersonnal<ViewModelMenuItem>(
+                async (item) => await OnItemSelected(item)
+            );
+
+        public ViewModelNavigation() { }
+
+        private async Task OnItemSelected(ViewModelMenuItem selectedItem)
+        {
+            if (string.IsNullOrEmpty(selectedItem?.Route))
+            {
+                Debug.WriteLine("Route is null, cannot navigate.");
+                return;
+            }
+            try
+            {
+                Title = selectedItem.Name;
+                SelectTab(selectedItem.Route);
+
+                var navigationParameter = new Dictionary<string, object> { { "Title", Title } };
+                await Shell.Current.GoToAsync(selectedItem.Route, navigationParameter);
+
+                Shell.Current.ForceLayout();
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"Navigation failed: {ex.Message}");
+            }
+        }
+
+        private async Task OnToItemDetail(string bookId)
+        {
+            if (bookId == null)
+            {
+                Debug.WriteLine("Book is null, cannot navigate to details page.");
+                return;
+            }
+
+            try
+            {
+                var navigationParameter = new Dictionary<string, object> { { "BookId", bookId } };
+                await Shell.Current.GoToAsync($"DetailBookPage", navigationParameter);
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"Navigation failed: {ex.Message}");
+            }
+        }
+
+        async Task BackButton(object sender, EventArgs args)
+        {
+            if (Shell.Current.Navigation.NavigationStack.Count > 1)
+            {
+                await Shell.Current.Navigation.PopAsync();
+            }
+        }
+
+        private void SelectTab(string route)
+        {
+            var shellItem = Shell.Current.Items.FirstOrDefault(
+                item => item.Items.Any(section => section.Route.Contains(route))
+            );
+
+            if (shellItem != null)
+            {
+                Shell.Current.CurrentItem = shellItem;
+            }
+        }
+    }
+}
diff --git a/Sources/DtoAbstractLayer/DtoAbstractLayer.csproj b/Sources/DtoAbstractLayer/DtoAbstractLayer.csproj
new file mode 100644
index 0000000..496da7a
--- /dev/null
+++ b/Sources/DtoAbstractLayer/DtoAbstractLayer.csproj
@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\LibraryDTO\LibraryDTO.csproj" />
+  </ItemGroup>
+</Project>
diff --git a/Sources/DtoAbstractLayer/IDtoManager.cs b/Sources/DtoAbstractLayer/IDtoManager.cs
new file mode 100644
index 0000000..246bc5c
--- /dev/null
+++ b/Sources/DtoAbstractLayer/IDtoManager.cs
@@ -0,0 +1,116 @@
+using LibraryDTO;
+
+namespace DtoAbstractLayer;
+
+/// <summary>
+/// abstract layer for requests on Books Library
+/// </summary>
+public interface IDtoManager
+{
+    /// <summary>
+    /// get a book by specifying its id
+    /// </summary>
+    /// <param name="id">id of the Book to get</param>
+    /// <returns>a Book with this id (or null if id is unknown)</returns>
+    Task<BookDTO> GetBookById(string id);
+
+    /// <summary>
+    /// get a book by specifying its isbn
+    /// </summary>
+    /// <param name="isbn">isbn of the Book to get</param>
+    /// <returns>a Book with this isbn (or null if isbn is unknown)</returns>
+    Task<BookDTO> GetBookByISBN(string isbn);
+
+    /// <summary>
+    /// get books containing a substring in their titles
+    /// </summary>
+    /// <param name="title">the substring to look for in book titles</param>
+    /// <param name="index">index of the page of resulting books</param>
+    /// <param name="count">number of resulting books per page</param>
+    /// <param name="sort">sort criterium (not mandatory):
+    /// <ul>
+    ///     <li>```title```: sort books by titles in alphabetical order,</li>
+    ///     <li>```title_reverse```: sort books by titles in reverse alphabetical order,</li>
+    ///     <li>```new```: sort books by publishing dates, beginning with the most recents,</li>
+    ///     <li>```old```: sort books by publishing dates, beginning with the oldest</li>
+    /// </ul>
+    /// </param>
+    /// <returns>max <i>count</i> books</returns>
+    Task<Tuple<long, IEnumerable<BookDTO>>> GetBooksByTitle(
+        string title,
+        int index,
+        int count,
+        string sort = ""
+    );
+
+    /// <summary>
+    /// get books of a particular author by giving the author id
+    /// </summary>
+    /// <param name="authorId">the id of the author</param>
+    /// <param name="index">index of the page of resulting books</param>
+    /// <param name="count">number of resulting books per page</param>
+    /// <param name="sort">sort criterium (not mandatory):
+    /// <ul>
+    ///     <li>```title```: sort books by titles in alphabetical order,</li>
+    ///     <li>```title_reverse```: sort books by titles in reverse alphabetical order,</li>
+    ///     <li>```new```: sort books by publishing dates, beginning with the most recents,</li>
+    ///     <li>```old```: sort books by publishing dates, beginning with the oldest</li>
+    /// </ul>
+    /// </param>
+    /// <returns>max <i>count</i> books</returns>
+    Task<Tuple<long, IEnumerable<BookDTO>>> GetBooksByAuthorId(
+        string authorId,
+        int index,
+        int count,
+        string sort = ""
+    );
+
+    /// <summary>
+    /// get books of authors whose name (or alternate names) contains a particular substring
+    /// </summary>
+    /// <param name="author">name to look for in author names or alternate names</param>
+    /// <param name="index">index of the page of resulting books</param>
+    /// <param name="count">number of resulting books per page</param>
+    /// <param name="sort">sort criterium (not mandatory):
+    /// <ul>
+    ///     <li>```title```: sort books by titles in alphabetical order,</li>
+    ///     <li>```title_reverse```: sort books by titles in reverse alphabetical order,</li>
+    ///     <li>```new```: sort books by publishing dates, beginning with the most recents,</li>
+    ///     <li>```old```: sort books by publishing dates, beginning with the oldest</li>
+    /// </ul>
+    /// </param>
+    /// <returns>max <i>count</i> books</returns>
+    Task<Tuple<long, IEnumerable<BookDTO>>> GetBooksByAuthor(
+        string author,
+        int index,
+        int count,
+        string sort = ""
+    );
+
+    /// <summary>
+    /// get an author by specifying its id
+    /// </summary>
+    /// <param name="id">id of the Author to get</param>
+    /// <returns>an author with this id (or null if id is unknown)</returns>
+    Task<AuthorDTO> GetAuthorById(string id);
+
+    /// <summary>
+    /// get authors containing a substring in their names (or alternate names)
+    /// </summary>
+    /// <param name="substring">the substring to look for in author names (or alternate names)</param>
+    /// <param name="index">index of the page of resulting authors</param>
+    /// <param name="count">number of resulting authors per page</param>
+    /// <param name="sort">sort criterium (not mandatory):
+    ///     <ul>
+    ///         <li>```name```: sort authors by names in alphabetical order,</li>
+    ///         <li>```name_reverse```: sort authors by names in reverse alphabetical order,</li>
+    ///     </ul>
+    /// </param>
+    /// <returns>max <i>count</i> authors</returns>
+    Task<Tuple<long, IEnumerable<AuthorDTO>>> GetAuthorsByName(
+        string substring,
+        int index,
+        int count,
+        string sort = ""
+    );
+}
diff --git a/Sources/JsonReader/AuthorJsonReader.cs b/Sources/JsonReader/AuthorJsonReader.cs
new file mode 100644
index 0000000..ec817bb
--- /dev/null
+++ b/Sources/JsonReader/AuthorJsonReader.cs
@@ -0,0 +1,103 @@
+using System;
+using LibraryDTO;
+using Newtonsoft.Json.Linq;
+using System.Globalization;
+
+namespace JsonReader
+{
+    public static class AuthorJsonReader
+    {
+        public static AuthorDTO ReadAuthor(string json)
+        {
+            JObject o = JObject.Parse(json);
+            string bioTokenAsString = null;
+            if (o.TryGetValue("bio", out JToken? bioToken))
+            {
+                if (bioToken.Type == JTokenType.String)
+                {
+                    bioTokenAsString = (string)bioToken;
+                }
+                else
+                {
+                    var bioTokenValue = o["bio"]?["value"];
+                    bioTokenAsString = (string)bioTokenValue;
+                }
+            }
+
+            AuthorDTO author = new AuthorDTO
+            {
+                Id = (string)o["key"],
+                Name = (string)o["name"],
+                Bio = bioTokenAsString,
+                BirthDate = o.TryGetValue("birth_date", out JToken? bd)
+                    ? ReadDate((string)o["birth_date"])
+                    : null,
+                DeathDate = o.TryGetValue("death_date", out JToken? dd)
+                    ? ReadDate((string)o["death_date"])
+                    : null,
+                Links = o.TryGetValue("links", out JToken? links)
+                    ? links
+                        .Select(
+                            l => new LinkDTO { Title = (string)l["title"], Url = (string)l["url"] }
+                        )
+                        .ToList()
+                    : new List<LinkDTO>(),
+                AlternateNames = o.TryGetValue("alternate_names", out JToken? altNames)
+                    ? altNames.Select(alt => (string)alt).ToList()
+                    : new List<string?>()
+            };
+            return author;
+        }
+
+        public static DateTime? ReadDate(string dateInJson)
+        {
+            if (dateInJson == null)
+                return null;
+
+            List<Tuple<string, CultureInfo>> pubDateFormat = new List<Tuple<string, CultureInfo>>()
+            {
+                Tuple.Create("d MMMM yyyy", CultureInfo.GetCultureInfo("fr-FR")),
+                Tuple.Create("d MMMM yyyy", CultureInfo.InvariantCulture),
+                Tuple.Create("MMM dd, yyyy", CultureInfo.InvariantCulture)
+            };
+
+            DateTime? publishDate = null;
+            foreach (var format in pubDateFormat)
+            {
+                if (
+                    DateTime.TryParseExact(
+                        dateInJson,
+                        format.Item1,
+                        format.Item2,
+                        DateTimeStyles.None,
+                        out DateTime readDate
+                    )
+                )
+                {
+                    publishDate = readDate;
+                    break;
+                }
+            }
+            if (!publishDate.HasValue && int.TryParse(dateInJson, out int year))
+            {
+                publishDate = new DateTime(year, 12, 31);
+            }
+            return publishDate;
+        }
+
+        public static Tuple<long, IEnumerable<AuthorDTO>> GetAuthorsByName(string json)
+        {
+            JObject o = JObject.Parse(json);
+            long numFound = (long)o["numFound"];
+            var authors = o["docs"].Select(
+                doc =>
+                    new AuthorDTO
+                    {
+                        Id = $"/authors/{(string)doc["key"]}",
+                        Name = (string)doc["name"],
+                    }
+            );
+            return Tuple.Create(numFound, authors);
+        }
+    }
+}
diff --git a/Sources/JsonReader/BookJsonReader.cs b/Sources/JsonReader/BookJsonReader.cs
new file mode 100644
index 0000000..504b5af
--- /dev/null
+++ b/Sources/JsonReader/BookJsonReader.cs
@@ -0,0 +1,117 @@
+using System.Globalization;
+using LibraryDTO;
+using Newtonsoft.Json.Linq;
+
+namespace JsonReader;
+
+public static class BookJsonReader
+{
+    static Dictionary<string, Languages> languages = new Dictionary<string, Languages>()
+    {
+        [@"/languages/fre"] = Languages.French,
+        [@"/languages/eng"] = Languages.English,
+        ["fre"] = Languages.French,
+        ["eng"] = Languages.English,
+        [""] = Languages.Unknown
+    };
+
+    public static BookDTO ReadBook(string json)
+    {
+        JObject o = JObject.Parse(json);
+        var l = o["languages"]?.FirstOrDefault("");
+        Languages lang = l != null ? languages[(string)l["key"]] : Languages.Unknown;
+        //List<Tuple<string, CultureInfo>> pubDateFormat =new List<Tuple<string, CultureInfo>>()
+        //{
+        //    Tuple.Create("d MMMM yyyy", CultureInfo.GetCultureInfo("fr-FR")),
+        //    Tuple.Create("MMM dd, yyyy", CultureInfo.InvariantCulture)
+        //};
+
+        //DateTime? publishDate = null;
+        //foreach(var format in pubDateFormat)
+        //{
+        //    if(DateTime.TryParseExact((string)o["publish_date"], format.Item1, format.Item2, DateTimeStyles.None, out DateTime readDate))
+        //    {
+        //        publishDate = readDate;
+        //        break;
+        //    }
+        //}
+        //if(!publishDate.HasValue)
+        //{
+        //    publishDate = new DateTime((int)o["publish_date"], 12, 31);
+        //}
+        DateTime? publishDate = AuthorJsonReader.ReadDate((string)o["publish_date"]);
+
+        BookDTO book = new BookDTO
+        {
+            Id = (string)o["key"],
+            Title = (string)o["title"],
+            Publishers = o["publishers"].Select(p => (string)p).ToList(),
+            PublishDate = publishDate.GetValueOrDefault(DateTime.Now),
+            ISBN13 = (string)o["isbn_13"][0],
+            NbPages = o["number_of_pages"] != null ? (int)o["number_of_pages"] : -1,
+            Language = lang,
+            Format = o.TryGetValue("physical_format", out JToken? f) ? (string)f : null,
+            Works = o["works"].Select(w => new WorkDTO { Id = (string)w["key"] }).ToList(),
+            Contributors = o.TryGetValue("contributors", out JToken? contr)
+                ? contr
+                    .Select(
+                        c =>
+                            new ContributorDTO
+                            {
+                                Name = (string)c["name"],
+                                Role = (string)c["role"]
+                            }
+                    )
+                    .ToList()
+                : new List<ContributorDTO>(),
+            Authors = o["authors"]?.Select(a => new AuthorDTO { Id = (string)a["key"] }).ToList()
+        };
+        if (book.Authors == null)
+        {
+            book.Authors = new List<AuthorDTO>();
+        }
+        return book;
+    }
+
+    public static Tuple<long, IEnumerable<BookDTO>> GetBooksByAuthor(string json)
+    {
+        JObject o = JObject.Parse(json);
+        long numFound = (long)o["numFound"];
+        var books = o["docs"].Select(
+            doc =>
+                new BookDTO
+                {
+                    Id = (string)(doc["seed"].First()),
+                    Title = (string)doc["title"],
+                    ISBN13 = (string)(doc["isbn"].First()),
+                    Authors = doc["seed"]
+                        .Where(s => ((string)s).StartsWith("/authors/"))
+                        .Select(s => new AuthorDTO { Id = (string)s })
+                        .ToList(),
+                    Language = languages.GetValueOrDefault((string)(doc["language"].First()))
+                }
+        );
+        return Tuple.Create(numFound, books);
+    }
+
+    public static Tuple<long, IEnumerable<BookDTO>> GetBooksByTitle(string json)
+    {
+        JObject o = JObject.Parse(json);
+        long numFound = (long)o["numFound"];
+        var books = o["docs"].Select(
+            doc =>
+                new BookDTO
+                {
+                    Id = (string)(doc["seed"].First()),
+                    Title = (string)doc["title"],
+                    ISBN13 = (string)(doc["isbn"].First()),
+                    Authors = doc["seed"]
+                        .Where(s => ((string)s).StartsWith("/authors/"))
+                        .Select(s => new AuthorDTO { Id = (string)s })
+                        .ToList(),
+                    Language = languages.GetValueOrDefault((string)(doc["language"].First()))
+                }
+        );
+        return Tuple.Create(numFound, books);
+    }
+}
diff --git a/Sources/JsonReader/JsonReader.csproj b/Sources/JsonReader/JsonReader.csproj
new file mode 100644
index 0000000..8e77096
--- /dev/null
+++ b/Sources/JsonReader/JsonReader.csproj
@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\LibraryDTO\LibraryDTO.csproj" />
+  </ItemGroup>
+</Project>
diff --git a/Sources/JsonReader/WorkJsonReader.cs b/Sources/JsonReader/WorkJsonReader.cs
new file mode 100644
index 0000000..94a14eb
--- /dev/null
+++ b/Sources/JsonReader/WorkJsonReader.cs
@@ -0,0 +1,60 @@
+using System;
+using LibraryDTO;
+using Newtonsoft.Json.Linq;
+using System.Globalization;
+
+namespace JsonReader
+{
+    public static class WorkJsonReader
+    {
+        public static WorkDTO ReadWork(string json, string ratingsJson)
+        {
+            JObject o = JObject.Parse(json);
+            JObject r = JObject.Parse(ratingsJson);
+            var ratingsDto = new RatingsDTO();
+            if (r["summary"]["average"].Type != JTokenType.Float)
+            {
+                ratingsDto.Average = -1;
+                ratingsDto.Count = 0;
+            }
+            else
+            {
+                ratingsDto.Average = (float)r["summary"]["average"];
+                ratingsDto.Count = (int)r["summary"]["count"];
+            }
+
+            string description = null;
+            if (o.TryGetValue("description", out JToken? descr))
+            {
+                if (descr.Type == JTokenType.String)
+                {
+                    description = (string)descr;
+                }
+                else
+                {
+                    if (descr["value"].Type == JTokenType.String)
+                    {
+                        description = (string)descr["value"];
+                    }
+                }
+            }
+
+            WorkDTO work = new WorkDTO
+            {
+                Id = (string)o["key"],
+                Title = (string)o["title"],
+                Authors = o.TryGetValue("authors", out JToken? authors)
+                    ? authors
+                        .Select(a => new AuthorDTO { Id = (string)a["author"]["key"] })
+                        .ToList()
+                    : new List<AuthorDTO>(),
+                Description = description,
+                Subjects = o.TryGetValue("subjects", out JToken? subjects)
+                    ? subjects.Select(s => (string)s).ToList()
+                    : new List<string>(),
+                Ratings = ratingsDto
+            };
+            return work;
+        }
+    }
+}
diff --git a/Sources/LibraryDTO/AuthorDTO.cs b/Sources/LibraryDTO/AuthorDTO.cs
new file mode 100644
index 0000000..6a9aa23
--- /dev/null
+++ b/Sources/LibraryDTO/AuthorDTO.cs
@@ -0,0 +1,21 @@
+using System;
+
+namespace LibraryDTO
+{
+    public class AuthorDTO
+    {
+        public string Id { get; set; }
+        public string Name { get; set; }
+        public string ImageSmall =>
+            $"https://covers.openlibrary.org/a/olid/{Id.Substring(Id.LastIndexOf("/"))}-S.jpg";
+        public string ImageMedium =>
+            $"https://covers.openlibrary.org/a/olid/{Id.Substring(Id.LastIndexOf("/"))}-M.jpg";
+        public string ImageLarge =>
+            $"https://covers.openlibrary.org/a/olid/{Id.Substring(Id.LastIndexOf("/"))}-L.jpg";
+        public string Bio { get; set; }
+        public List<string> AlternateNames { get; set; } = new List<string>();
+        public List<LinkDTO> Links { get; set; }
+        public DateTime? BirthDate { get; set; }
+        public DateTime? DeathDate { get; set; }
+    }
+}
diff --git a/Sources/LibraryDTO/BookDTO.cs b/Sources/LibraryDTO/BookDTO.cs
new file mode 100644
index 0000000..b48723c
--- /dev/null
+++ b/Sources/LibraryDTO/BookDTO.cs
@@ -0,0 +1,23 @@
+using System;
+
+namespace LibraryDTO
+{
+    public class BookDTO
+    {
+        public string Id { get; set; }
+        public string Title { get; set; }
+        public List<string> Publishers { get; set; } = new List<string>();
+        public DateTime PublishDate { get; set; }
+        public string ISBN13 { get; set; }
+        public List<string> Series { get; set; } = new List<string>();
+        public int NbPages { get; set; }
+        public string Format { get; set; }
+        public Languages Language { get; set; }
+        public List<ContributorDTO> Contributors { get; set; }
+        public string ImageSmall => $"https://covers.openlibrary.org/b/isbn/{ISBN13}-S.jpg";
+        public string ImageMedium => $"https://covers.openlibrary.org/b/isbn/{ISBN13}-M.jpg";
+        public string ImageLarge => $"https://covers.openlibrary.org/b/isbn/{ISBN13}-L.jpg";
+        public List<WorkDTO> Works { get; set; } = new List<WorkDTO>();
+        public List<AuthorDTO> Authors { get; set; } = new List<AuthorDTO>();
+    }
+}
diff --git a/Sources/LibraryDTO/ContributorDTO.cs b/Sources/LibraryDTO/ContributorDTO.cs
new file mode 100644
index 0000000..a3c4ab3
--- /dev/null
+++ b/Sources/LibraryDTO/ContributorDTO.cs
@@ -0,0 +1,10 @@
+using System;
+
+namespace LibraryDTO
+{
+    public class ContributorDTO
+    {
+        public string Name { get; set; }
+        public string Role { get; set; }
+    }
+}
diff --git a/Sources/LibraryDTO/Languages.cs b/Sources/LibraryDTO/Languages.cs
new file mode 100644
index 0000000..b75d9eb
--- /dev/null
+++ b/Sources/LibraryDTO/Languages.cs
@@ -0,0 +1,11 @@
+using System;
+
+namespace LibraryDTO
+{
+    public enum Languages
+    {
+        Unknown,
+        French,
+        English
+    }
+}
diff --git a/Sources/LibraryDTO/LibraryDTO.csproj b/Sources/LibraryDTO/LibraryDTO.csproj
new file mode 100644
index 0000000..ef76c53
--- /dev/null
+++ b/Sources/LibraryDTO/LibraryDTO.csproj
@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <WarningLevel>4</WarningLevel>
+    <DocumentationFile>bin\Debug\net7.0\LibraryDTO.xml</DocumentationFile>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <WarningLevel>4</WarningLevel>
+    <DocumentationFile>bin\Release\net7.0\LibraryDTO.xml</DocumentationFile>
+  </PropertyGroup>
+</Project>
diff --git a/Sources/LibraryDTO/LinkDTO.cs b/Sources/LibraryDTO/LinkDTO.cs
new file mode 100644
index 0000000..ef98bd8
--- /dev/null
+++ b/Sources/LibraryDTO/LinkDTO.cs
@@ -0,0 +1,10 @@
+using System;
+
+namespace LibraryDTO
+{
+    public class LinkDTO
+    {
+        public string Title { get; set; }
+        public string Url { get; set; }
+    }
+}
diff --git a/Sources/LibraryDTO/RatingsDTO.cs b/Sources/LibraryDTO/RatingsDTO.cs
new file mode 100644
index 0000000..93eb3fd
--- /dev/null
+++ b/Sources/LibraryDTO/RatingsDTO.cs
@@ -0,0 +1,10 @@
+using System;
+
+namespace LibraryDTO
+{
+    public class RatingsDTO
+    {
+        public float Average { get; set; }
+        public int Count { get; set; }
+    }
+}
diff --git a/Sources/LibraryDTO/WorkDTO.cs b/Sources/LibraryDTO/WorkDTO.cs
new file mode 100644
index 0000000..0022446
--- /dev/null
+++ b/Sources/LibraryDTO/WorkDTO.cs
@@ -0,0 +1,14 @@
+using System;
+
+namespace LibraryDTO
+{
+    public class WorkDTO
+    {
+        public string Id { get; set; }
+        public string Description { get; set; }
+        public string Title { get; set; }
+        public List<string> Subjects { get; set; } = new List<string>();
+        public List<AuthorDTO> Authors { get; set; } = new List<AuthorDTO>();
+        public RatingsDTO Ratings { get; set; }
+    }
+}
diff --git a/Sources/Model/Author.cs b/Sources/Model/Author.cs
new file mode 100644
index 0000000..dddd51e
--- /dev/null
+++ b/Sources/Model/Author.cs
@@ -0,0 +1,36 @@
+using System;
+
+namespace Model
+{
+    public class Author : IEquatable<Author>
+    {
+        public string Id { get; set; }
+        public string Name { get; set; }
+        public string ImageSmall =>
+            $"https://covers.openlibrary.org/a/olid/{Id.Substring(Id.LastIndexOf("/"))}-S.jpg";
+        public string ImageMedium =>
+            $"https://covers.openlibrary.org/a/olid/{Id.Substring(Id.LastIndexOf("/"))}-M.jpg";
+        public string ImageLarge =>
+            $"https://covers.openlibrary.org/a/olid/{Id.Substring(Id.LastIndexOf("/"))}-L.jpg";
+        public string Bio { get; set; }
+        public List<string> AlternateNames { get; set; } = new List<string>();
+        public List<Link> Links { get; set; }
+        public DateTime? BirthDate { get; set; }
+        public DateTime? DeathDate { get; set; }
+
+        public bool Equals(Author? other) => Id == other.Id;
+
+        public override bool Equals(object? obj)
+        {
+            if (ReferenceEquals(obj, null))
+                return false;
+            if (ReferenceEquals(this, obj))
+                return true;
+            if (GetType() != obj.GetType())
+                return false;
+            return Equals(obj as Author);
+        }
+
+        public override int GetHashCode() => Id.GetHashCode();
+    }
+}
diff --git a/Sources/Model/Book.cs b/Sources/Model/Book.cs
new file mode 100644
index 0000000..2f176bf
--- /dev/null
+++ b/Sources/Model/Book.cs
@@ -0,0 +1,41 @@
+using static Model.Book;
+
+namespace Model;
+
+public class Book : IEquatable<Book>
+{
+    public string Id { get; set; }
+    public string Title { get; set; }
+    public List<string> Publishers { get; set; } = new List<string>();
+    public DateTime PublishDate { get; set; }
+    public string ISBN13 { get; set; }
+    public List<string> Series { get; set; } = new List<string>();
+    public int NbPages { get; set; }
+    public string Format { get; set; }
+    public Languages Language { get; set; }
+    public List<Contributor> Contributors { get; set; }
+    public string ImageSmall => $"https://covers.openlibrary.org/b/isbn/{ISBN13}-S.jpg";
+    public string ImageMedium => $"https://covers.openlibrary.org/b/isbn/{ISBN13}-M.jpg";
+    public string ImageLarge => $"https://covers.openlibrary.org/b/isbn/{ISBN13}-L.jpg";
+    public List<Work> Works { get; set; } = new List<Work>();
+    public List<Author> Authors { get; set; } = new List<Author>();
+    public Status Status { get; set; }
+    public List<string> UserTags { get; set; } = new List<string>();
+    public float? UserRating { get; set; }
+    public string UserNote { get; set; }
+
+    public bool Equals(Book? other) => Id == other.Id;
+
+    public override bool Equals(object? obj)
+    {
+        if (ReferenceEquals(obj, null))
+            return false;
+        if (ReferenceEquals(this, obj))
+            return true;
+        if (GetType() != obj.GetType())
+            return false;
+        return Equals(obj as Book);
+    }
+
+    public override int GetHashCode() => Id.GetHashCode();
+}
diff --git a/Sources/Model/Borrowing.cs b/Sources/Model/Borrowing.cs
new file mode 100644
index 0000000..de5189d
--- /dev/null
+++ b/Sources/Model/Borrowing.cs
@@ -0,0 +1,29 @@
+using System;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace Model
+{
+    public class Borrowing : IEquatable<Borrowing> //emprunt
+    {
+        public string Id { get; set; }
+        public Book Book { get; set; }
+        public Contact Owner { get; set; }
+        public DateTime BorrowedAt { get; set; }
+        public DateTime? ReturnedAt { get; set; }
+
+        public bool Equals(Borrowing? other) => Id == other.Id;
+
+        public override bool Equals(object? obj)
+        {
+            if (ReferenceEquals(obj, null))
+                return false;
+            if (ReferenceEquals(this, obj))
+                return true;
+            if (GetType() != obj.GetType())
+                return false;
+            return Equals(obj as Borrowing);
+        }
+
+        public override int GetHashCode() => Id.GetHashCode();
+    }
+}
diff --git a/Sources/Model/Contact.cs b/Sources/Model/Contact.cs
new file mode 100644
index 0000000..a77208c
--- /dev/null
+++ b/Sources/Model/Contact.cs
@@ -0,0 +1,26 @@
+using System;
+
+namespace Model
+{
+    public class Contact : IEquatable<Contact>
+    {
+        public string Id { get; set; }
+        public string FirstName { get; set; }
+        public string LastName { get; set; }
+
+        public bool Equals(Contact? other) => Id == other.Id;
+
+        public override bool Equals(object? obj)
+        {
+            if (ReferenceEquals(obj, null))
+                return false;
+            if (ReferenceEquals(this, obj))
+                return true;
+            if (GetType() != obj.GetType())
+                return false;
+            return Equals(obj as Contact);
+        }
+
+        public override int GetHashCode() => Id.GetHashCode();
+    }
+}
diff --git a/Sources/Model/Contributor.cs b/Sources/Model/Contributor.cs
new file mode 100644
index 0000000..4ec6a41
--- /dev/null
+++ b/Sources/Model/Contributor.cs
@@ -0,0 +1,10 @@
+using System;
+
+namespace Model
+{
+    public class Contributor
+    {
+        public string Name { get; set; }
+        public string Role { get; set; }
+    }
+}
diff --git a/Sources/Model/ILibraryManager.cs b/Sources/Model/ILibraryManager.cs
new file mode 100644
index 0000000..be48f06
--- /dev/null
+++ b/Sources/Model/ILibraryManager.cs
@@ -0,0 +1,35 @@
+using System;
+
+namespace Model
+{
+    public interface ILibraryManager
+    {
+        Task<Book> GetBookById(string id);
+        Task<Book> GetBookByISBN(string isbn);
+        Task<Tuple<long, IEnumerable<Book>>> GetBooksByTitle(
+            string title,
+            int index,
+            int count,
+            string sort = ""
+        );
+        Task<Tuple<long, IEnumerable<Book>>> GetBooksByAuthorId(
+            string authorId,
+            int index,
+            int count,
+            string sort = ""
+        );
+        Task<Tuple<long, IEnumerable<Book>>> GetBooksByAuthor(
+            string author,
+            int index,
+            int count,
+            string sort = ""
+        );
+        Task<Author> GetAuthorById(string id);
+        Task<Tuple<long, IEnumerable<Author>>> GetAuthorsByName(
+            string substring,
+            int index,
+            int count,
+            string sort = ""
+        );
+    }
+}
diff --git a/Sources/Model/IUserLibraryManager.cs b/Sources/Model/IUserLibraryManager.cs
new file mode 100644
index 0000000..eb35fd5
--- /dev/null
+++ b/Sources/Model/IUserLibraryManager.cs
@@ -0,0 +1,43 @@
+using System;
+
+namespace Model
+{
+    public interface IUserLibraryManager : ILibraryManager
+    {
+        Task<Tuple<long, IEnumerable<Book>>> GetBooksFromCollection(
+            int index,
+            int count,
+            string sort = ""
+        );
+
+        Task<Book> AddBook(Book book);
+        Task<Book> AddBook(string id);
+        Task<Book> AddBookByIsbn(string isbn);
+        Task<bool> RemoveBook(Book book);
+        Task<bool> RemoveBook(string id);
+        Task<bool> RemoveBookByIsbn(string isbn);
+
+        Task<bool> AddToFavorites(Book book);
+        Task<bool> AddToFavorites(string bookId);
+        Task<bool> RemoveFromFavorites(Book book);
+        Task<bool> RemoveFromFavorites(string bookId);
+
+        Task<Book> UpdateBook(Book updatedBook);
+
+        Task<Contact> AddContact(Contact contact);
+        Task<bool> RemoveContact(Contact contact);
+
+        Task<bool> LendBook(Book book, Contact contact, DateTime? loanDate);
+        Task<bool> GetBackBook(Book book, DateTime? returnedDate);
+        Task<bool> BorrowBook(Book book, Contact owner, DateTime? borrowedDate);
+        Task<bool> GiveBackBook(Book book, DateTime? returnedDate);
+
+        Task<Tuple<long, IEnumerable<Loan>>> GetCurrentLoans(int index, int count);
+        Task<Tuple<long, IEnumerable<Loan>>> GetPastLoans(int index, int count);
+
+        Task<Tuple<long, IEnumerable<Borrowing>>> GetCurrentBorrowings(int index, int count);
+        Task<Tuple<long, IEnumerable<Borrowing>>> GetPastBorrowings(int index, int count);
+
+        Task<Tuple<long, IEnumerable<Contact>>> GetContacts(int index, int count);
+    }
+}
diff --git a/Sources/Model/Languages.cs b/Sources/Model/Languages.cs
new file mode 100644
index 0000000..8a4e6ac
--- /dev/null
+++ b/Sources/Model/Languages.cs
@@ -0,0 +1,11 @@
+using System;
+
+namespace Model
+{
+    public enum Languages
+    {
+        Unknown,
+        French,
+        English
+    }
+}
diff --git a/Sources/Model/Link.cs b/Sources/Model/Link.cs
new file mode 100644
index 0000000..2c3c35f
--- /dev/null
+++ b/Sources/Model/Link.cs
@@ -0,0 +1,10 @@
+using System;
+
+namespace Model
+{
+    public class Link
+    {
+        public string Title { get; set; }
+        public string Url { get; set; }
+    }
+}
diff --git a/Sources/Model/Loan.cs b/Sources/Model/Loan.cs
new file mode 100644
index 0000000..e6c1f4e
--- /dev/null
+++ b/Sources/Model/Loan.cs
@@ -0,0 +1,28 @@
+using System;
+
+namespace Model
+{
+    public class Loan : IEquatable<Loan> //prêt
+    {
+        public string Id { get; set; }
+        public Book Book { get; set; }
+        public Contact Loaner { get; set; }
+        public DateTime LoanedAt { get; set; }
+        public DateTime? ReturnedAt { get; set; }
+
+        public bool Equals(Loan? other) => Id == other.Id;
+
+        public override bool Equals(object? obj)
+        {
+            if (ReferenceEquals(obj, null))
+                return false;
+            if (ReferenceEquals(this, obj))
+                return true;
+            if (GetType() != obj.GetType())
+                return false;
+            return Equals(obj as Loan);
+        }
+
+        public override int GetHashCode() => Id.GetHashCode();
+    }
+}
diff --git a/Sources/Model/Manager.cs b/Sources/Model/Manager.cs
new file mode 100644
index 0000000..97b95c0
--- /dev/null
+++ b/Sources/Model/Manager.cs
@@ -0,0 +1,133 @@
+using System;
+using System.Collections.ObjectModel;
+using System.Reflection;
+
+namespace Model
+{
+    public class Manager
+    {
+        private ILibraryManager LibraryManager { get; set; }
+        private IUserLibraryManager UserLibraryManager { get; set; }
+
+        public ReadOnlyCollection<Book> Books { get; private set; }
+        private List<Book> books = new();
+
+        public Manager(ILibraryManager libMgr, IUserLibraryManager userLibMgr)
+        {
+            LibraryManager = libMgr;
+            UserLibraryManager = userLibMgr;
+            Books = new ReadOnlyCollection<Book>(books);
+        }
+
+        public async Task<Book> GetBookById(string id) => await LibraryManager.GetBookById(id);
+
+        public async Task<Book> GetBookByISBN(string isbn) =>
+            await LibraryManager.GetBookByISBN(isbn);
+
+        public async Task<(long count, IEnumerable<Book> books)> GetBooksByTitle(
+            string title,
+            int index,
+            int count,
+            string sort = ""
+        )
+        {
+            var result = await LibraryManager.GetBooksByTitle(title, index, count, sort);
+            return (result.Item1, result.Item2);
+        }
+
+        public async Task<(long count, IEnumerable<Book> books)> GetBooksByAuthorId(
+            string authorId,
+            int index,
+            int count,
+            string sort = ""
+        )
+        {
+            var result = await LibraryManager.GetBooksByAuthorId(authorId, index, count, sort);
+            return (result.Item1, result.Item2);
+        }
+
+        public async Task<(long count, IEnumerable<Book> books)> GetBooksByAuthor(
+            string author,
+            int index,
+            int count,
+            string sort = ""
+        )
+        {
+            var result = await LibraryManager.GetBooksByAuthor(author, index, count, sort);
+            return (result.Item1, result.Item2);
+        }
+
+        public async Task<Author> GetAuthorById(string id) =>
+            await LibraryManager.GetAuthorById(id);
+
+        public async Task<(long count, IEnumerable<Author> authors)> GetAuthorsByName(
+            string substring,
+            int index,
+            int count,
+            string sort = ""
+        )
+        {
+            var result = await LibraryManager.GetAuthorsByName(substring, index, count, sort);
+            return (result.Item1, result.Item2);
+        }
+
+        public Task<Book> AddBookToCollection(string id)
+        {
+            return UserLibraryManager.AddBook(id);
+        }
+
+        public async Task<Book> GetBookByIdFromCollection(string id) =>
+            await UserLibraryManager.GetBookById(id);
+
+        public Task<Book> UpdateBook(Book book)
+        {
+            return UserLibraryManager.UpdateBook(book);
+        }
+
+        public Task<(long count, IEnumerable<Book> books)> GetBooksFromCollection(
+            int index,
+            int count,
+            string sort = ""
+        )
+        {
+            var result = UserLibraryManager.GetBooksFromCollection(index, count, sort).Result;
+            return Task.FromResult((result.Item1, result.Item2));
+        }
+
+        public Task<(long count, IEnumerable<Contact> contacts)> GetContacts(int index, int count)
+        {
+            var result = UserLibraryManager.GetContacts(index, count).Result;
+            return Task.FromResult((result.Item1, result.Item2));
+        }
+
+        public Task<(long count, IEnumerable<Loan> loans)> GetCurrentLoans(int index, int count)
+        {
+            var result = UserLibraryManager.GetCurrentLoans(index, count).Result;
+            return Task.FromResult((result.Item1, result.Item2));
+        }
+
+        public Task<(long count, IEnumerable<Loan> loans)> GetPastLoans(int index, int count)
+        {
+            var result = UserLibraryManager.GetPastLoans(index, count).Result;
+            return Task.FromResult((result.Item1, result.Item2));
+        }
+
+        public Task<(long count, IEnumerable<Borrowing> borrowings)> GetCurrentBorrowings(
+            int index,
+            int count
+        )
+        {
+            var result = UserLibraryManager.GetCurrentBorrowings(index, count).Result;
+            return Task.FromResult((result.Item1, result.Item2));
+        }
+
+        public Task<(long count, IEnumerable<Borrowing> borrowings)> GetPastBorrowings(
+            int index,
+            int count
+        )
+        {
+            var result = UserLibraryManager.GetPastBorrowings(index, count).Result;
+            return Task.FromResult((result.Item1, result.Item2));
+        }
+    }
+}
diff --git a/Sources/Model/Model.csproj b/Sources/Model/Model.csproj
new file mode 100644
index 0000000..4658cbf
--- /dev/null
+++ b/Sources/Model/Model.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
diff --git a/Sources/Model/Person.cs b/Sources/Model/Person.cs
new file mode 100644
index 0000000..b2e13e9
--- /dev/null
+++ b/Sources/Model/Person.cs
@@ -0,0 +1,10 @@
+using System;
+
+namespace Model
+{
+    public class Person
+    {
+        public string Id { get; set; }
+        public string Name { get; set; }
+    }
+}
diff --git a/Sources/Model/Ratings.cs b/Sources/Model/Ratings.cs
new file mode 100644
index 0000000..2d5aa2e
--- /dev/null
+++ b/Sources/Model/Ratings.cs
@@ -0,0 +1,10 @@
+using System;
+
+namespace Model
+{
+    public class Ratings
+    {
+        public float Average { get; set; }
+        public int Count { get; set; }
+    }
+}
diff --git a/Sources/Model/Status.cs b/Sources/Model/Status.cs
new file mode 100644
index 0000000..74701f7
--- /dev/null
+++ b/Sources/Model/Status.cs
@@ -0,0 +1,13 @@
+using System;
+
+namespace Model
+{
+    public enum Status
+    {
+        Unknown,
+        Finished,
+        Reading,
+        NotRead,
+        ToBeRead
+    }
+}
diff --git a/Sources/Model/Work.cs b/Sources/Model/Work.cs
new file mode 100644
index 0000000..97cd156
--- /dev/null
+++ b/Sources/Model/Work.cs
@@ -0,0 +1,29 @@
+using System;
+
+namespace Model
+{
+    public class Work : IEquatable<Work>
+    {
+        public string Id { get; set; }
+        public string Description { get; set; }
+        public string Title { get; set; }
+        public List<string> Subjects { get; set; } = new List<string>();
+        public List<Author> Authors { get; set; } = new List<Author>();
+        public Ratings Ratings { get; set; }
+
+        public bool Equals(Work? other) => Id == other.Id;
+
+        public override bool Equals(object? obj)
+        {
+            if (ReferenceEquals(obj, null))
+                return false;
+            if (ReferenceEquals(this, obj))
+                return true;
+            if (GetType() != obj.GetType())
+                return false;
+            return Equals(obj as Work);
+        }
+
+        public override int GetHashCode() => Id.GetHashCode();
+    }
+}
diff --git a/Sources/Stub/EnumsMapper.cs b/Sources/Stub/EnumsMapper.cs
new file mode 100644
index 0000000..57e3beb
--- /dev/null
+++ b/Sources/Stub/EnumsMapper.cs
@@ -0,0 +1,49 @@
+using System;
+using Utils;
+
+namespace Stub
+{
+    static class EnumsMapper
+    {
+        public static EnumsMapper<Model.Languages, LibraryDTO.Languages> BiddingsMapper { get; } =
+            new EnumsMapper<Model.Languages, LibraryDTO.Languages>(
+                Tuple.Create(Model.Languages.Unknown, LibraryDTO.Languages.Unknown),
+                Tuple.Create(Model.Languages.French, LibraryDTO.Languages.French),
+                Tuple.Create(Model.Languages.English, LibraryDTO.Languages.English)
+            );
+
+        public static TModel ToModel<TModel, TDTO>(this TDTO dto)
+            where TModel : Enum
+            where TDTO : Enum
+        {
+            foreach (var prop in typeof(EnumsMapper).GetProperties())
+            {
+                if (prop.PropertyType.Equals(typeof(EnumsMapper<TModel, TDTO>)))
+                {
+                    return (prop.GetValue(null) as EnumsMapper<TModel, TDTO>).GetModel(dto);
+                }
+            }
+            return default(TModel);
+        }
+
+        public static Model.Languages ToModel(this LibraryDTO.Languages dto) =>
+            ToModel<Model.Languages, LibraryDTO.Languages>(dto);
+
+        public static TDTO ToDTO<TModel, TDTO>(this TModel model)
+            where TModel : Enum
+            where TDTO : Enum
+        {
+            foreach (var prop in typeof(EnumsMapper).GetProperties())
+            {
+                if (prop.PropertyType.Equals(typeof(EnumsMapper<TModel, TDTO>)))
+                {
+                    return (prop.GetValue(null) as EnumsMapper<TModel, TDTO>).GetEntity(model);
+                }
+            }
+            return default(TDTO);
+        }
+
+        public static LibraryDTO.Languages ToDTO(this Model.Languages model) =>
+            ToDTO<Model.Languages, LibraryDTO.Languages>(model);
+    }
+}
diff --git a/Sources/Stub/Extensions.cs b/Sources/Stub/Extensions.cs
new file mode 100644
index 0000000..e3aa41d
--- /dev/null
+++ b/Sources/Stub/Extensions.cs
@@ -0,0 +1,98 @@
+using System;
+using LibraryDTO;
+using Model;
+using static Stub.Mapper;
+
+namespace Stub
+{
+    public static class Extensions
+    {
+        public static Ratings ToPoco(this RatingsDTO dto) =>
+            new Ratings() { Average = dto.Average, Count = dto.Count };
+
+        public static IEnumerable<Ratings> ToPocos(this IEnumerable<RatingsDTO> dtos) =>
+            dtos.Select(dto => dto.ToPoco());
+
+        public static Contributor ToPoco(this ContributorDTO dto) =>
+            new Contributor { Name = dto.Name, Role = dto.Role };
+
+        public static IEnumerable<Contributor> ToPocos(this IEnumerable<ContributorDTO> dtos) =>
+            dtos.Select(dto => dto.ToPoco());
+
+        public static Link ToPoco(this LinkDTO dto) =>
+            new Link { Title = dto.Title, Url = dto.Url };
+
+        public static IEnumerable<Link> ToPocos(this IEnumerable<LinkDTO> dtos) =>
+            dtos.Select(dto => dto.ToPoco());
+
+        public static Author ToPoco(this AuthorDTO dto)
+        {
+            var result = AuthorsMapper.GetT(dto);
+            if (result == null)
+            {
+                result = new Author
+                {
+                    AlternateNames = dto.AlternateNames,
+                    Bio = dto.Bio,
+                    BirthDate = dto.BirthDate,
+                    DeathDate = dto.DeathDate,
+                    Id = dto.Id,
+                    Links = dto.Links.ToPocos().ToList(),
+                    Name = dto.Name
+                };
+            }
+            return result;
+        }
+
+        public static IEnumerable<Author> ToPocos(this IEnumerable<AuthorDTO> dtos) =>
+            dtos.Select(dto => dto.ToPoco());
+
+        public static Work ToPoco(this WorkDTO dto)
+        {
+            var result = WorksMapper.GetT(dto);
+            if (result == null)
+            {
+                result = new Work
+                {
+                    Authors = dto.Authors.ToPocos().ToList(),
+                    Description = dto.Description,
+                    Id = dto.Id,
+                    Ratings = dto.Ratings.ToPoco(),
+                    Subjects = dto.Subjects,
+                    Title = dto.Title
+                };
+            }
+            return result;
+        }
+
+        public static IEnumerable<Work> ToPocos(this IEnumerable<WorkDTO> dtos) =>
+            dtos.Select(dto => dto.ToPoco());
+
+        public static Book ToPoco(this BookDTO dto)
+        {
+            var result = BooksMapper.GetT(dto);
+            if (result == null)
+            {
+                result = new Book
+                {
+                    Authors = dto.Authors.ToPocos().ToList(),
+                    Contributors = dto.Contributors.ToPocos().ToList(),
+                    Format = dto.Format,
+                    Id = dto.Id,
+                    ISBN13 = dto.ISBN13,
+                    Language = dto.Language.ToModel(),
+                    NbPages = dto.NbPages,
+                    PublishDate = dto.PublishDate,
+                    Publishers = dto.Publishers,
+                    Series = dto.Series,
+                    Title = dto.Title,
+                    Works = dto.Works.ToPocos().ToList()
+                };
+            }
+            return result;
+        }
+
+        public static IEnumerable<Book> ToPocos(this IEnumerable<BookDTO> dtos) =>
+            dtos.Select(dto => dto.ToPoco());
+    }
+}
diff --git a/Sources/Stub/LibraryStub.cs b/Sources/Stub/LibraryStub.cs
new file mode 100644
index 0000000..10ed3d5
--- /dev/null
+++ b/Sources/Stub/LibraryStub.cs
@@ -0,0 +1,68 @@
+using Model;
+using Stub;
+
+namespace StubLib;
+
+public class LibraryStub : ILibraryManager
+{
+    private StubbedDTO.Stub StubDTO { get; set; } = new StubbedDTO.Stub();
+
+    public async Task<Author> GetAuthorById(string id)
+    {
+        return (await StubDTO.GetAuthorById(id)).ToPoco();
+    }
+
+    public async Task<Tuple<long, IEnumerable<Author>>> GetAuthorsByName(
+        string substring,
+        int index,
+        int count,
+        string sort = ""
+    )
+    {
+        var result = await StubDTO.GetAuthorsByName(substring, index, count, sort);
+        return Tuple.Create(result.Item1, result.Item2.ToPocos());
+    }
+
+    public async Task<Book> GetBookById(string id)
+    {
+        return (await StubDTO.GetBookById(id)).ToPoco();
+    }
+
+    public async Task<Book> GetBookByISBN(string isbn)
+    {
+        return (await StubDTO.GetBookByISBN(isbn)).ToPoco();
+    }
+
+    public async Task<Tuple<long, IEnumerable<Book>>> GetBooksByAuthor(
+        string author,
+        int index,
+        int count,
+        string sort = ""
+    )
+    {
+        var result = await StubDTO.GetBooksByAuthor(author, index, count, sort);
+        return Tuple.Create(result.Item1, result.Item2.ToPocos());
+    }
+
+    public async Task<Tuple<long, IEnumerable<Book>>> GetBooksByAuthorId(
+        string authorId,
+        int index,
+        int count,
+        string sort = ""
+    )
+    {
+        var result = await StubDTO.GetBooksByAuthor(authorId, index, count, sort);
+        return Tuple.Create(result.Item1, result.Item2.ToPocos());
+    }
+
+    public async Task<Tuple<long, IEnumerable<Book>>> GetBooksByTitle(
+        string title,
+        int index,
+        int count,
+        string sort = ""
+    )
+    {
+        var result = await StubDTO.GetBooksByTitle(title, index, count, sort);
+        return Tuple.Create(result.Item1, result.Item2.ToPocos());
+    }
+}
diff --git a/Sources/Stub/Mapper.cs b/Sources/Stub/Mapper.cs
new file mode 100644
index 0000000..00e28cc
--- /dev/null
+++ b/Sources/Stub/Mapper.cs
@@ -0,0 +1,24 @@
+using System;
+using static System.Collections.Specialized.BitVector32;
+using System.Numerics;
+using Utils;
+using Model;
+using LibraryDTO;
+
+namespace Stub
+{
+    static class Mapper
+    {
+        internal static Mapper<Author, AuthorDTO> AuthorsMapper { get; } =
+            new Mapper<Author, AuthorDTO>();
+        internal static Mapper<Work, WorkDTO> WorksMapper { get; } = new Mapper<Work, WorkDTO>();
+        internal static Mapper<Book, BookDTO> BooksMapper { get; } = new Mapper<Book, BookDTO>();
+
+        internal static void Reset()
+        {
+            AuthorsMapper.Reset();
+            WorksMapper.Reset();
+            BooksMapper.Reset();
+        }
+    }
+}
diff --git a/Sources/Stub/Stub.csproj b/Sources/Stub/Stub.csproj
new file mode 100644
index 0000000..f70ca4b
--- /dev/null
+++ b/Sources/Stub/Stub.csproj
@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Model\Model.csproj" />
+    <ProjectReference Include="..\StubbedDTO\StubbedDTO.csproj" />
+    <ProjectReference Include="..\Utils\Utils.csproj" />
+  </ItemGroup>
+</Project>
diff --git a/Sources/Stub/UserLibraryStub.cs b/Sources/Stub/UserLibraryStub.cs
new file mode 100644
index 0000000..4a2c8cd
--- /dev/null
+++ b/Sources/Stub/UserLibraryStub.cs
@@ -0,0 +1,543 @@
+using System;
+using System.Collections.ObjectModel;
+using Model;
+using System.Linq;
+using LibraryDTO;
+using System.Xml.Linq;
+using System.Diagnostics;
+
+namespace StubLib
+{
+    public class UserLibraryStub : IUserLibraryManager
+    {
+        public ReadOnlyCollection<Book> Favorites { get; private set; }
+        private List<Book> favorites = new List<Book>();
+
+        public ReadOnlyCollection<Book> Books { get; private set; }
+        private List<Book> books = new List<Book>();
+
+        public ReadOnlyCollection<Contact> Contacts { get; private set; }
+        private List<Contact> contacts = new List<Contact>();
+
+        public ReadOnlyCollection<Loan> Loans { get; private set; }
+        private List<Loan> loans = new List<Loan>();
+
+        public ReadOnlyCollection<Borrowing> Borrowings { get; private set; }
+        private List<Borrowing> borrowings = new List<Borrowing>();
+
+        public ILibraryManager LibraryMgr { get; private set; }
+
+        public UserLibraryStub(ILibraryManager libraryMgr)
+        {
+            LibraryMgr = libraryMgr;
+            Favorites = new ReadOnlyCollection<Book>(favorites);
+            Books = new ReadOnlyCollection<Book>(books);
+            Borrowings = new ReadOnlyCollection<Borrowing>(borrowings);
+            Loans = new ReadOnlyCollection<Loan>(loans);
+            Contacts = new ReadOnlyCollection<Contact>(contacts);
+
+            contacts.AddRange(
+                new Contact[]
+                {
+                    new Contact
+                    {
+                        Id = "/contacts/01",
+                        FirstName = "Audrey",
+                        LastName = "Pouclet"
+                    },
+                    new Contact
+                    {
+                        Id = "/contacts/02",
+                        FirstName = "Malika",
+                        LastName = "More"
+                    },
+                    new Contact { Id = "/contacts/03", FirstName = "Antoine" },
+                }
+            );
+            books.AddRange(
+                new Book[]
+                {
+                    LibraryMgr.GetBookById("/books/OL25910297M").Result,
+                    LibraryMgr.GetBookById("/books/OL26210208M").Result,
+                    LibraryMgr.GetBookById("/books/OL27258011M").Result,
+                    LibraryMgr.GetBookById("/books/OL28294024M").Result,
+                    LibraryMgr.GetBookById("/books/OL28639494M").Result,
+                    LibraryMgr.GetBookById("/books/OL35699439M").Result,
+                    LibraryMgr.GetBookById("/books/OL37758347M").Result,
+                    LibraryMgr.GetBookById("/books/OL38218739M").Result,
+                    LibraryMgr.GetBookById("/books/OL38586212M").Result,
+                    LibraryMgr.GetBookById("/books/OL8839071M").Result,
+                    LibraryMgr.GetBookById("/books/OL8198056M").Result,
+                }
+            );
+            books[0].Status = Status.Finished;
+            books[0].UserNote = "Super bouquin de SF !";
+            books[0].UserRating = 4.5f;
+            loans.Add(
+                new Loan
+                {
+                    Id = "/loans/01",
+                    Book = books[0],
+                    Loaner = contacts[0],
+                    LoanedAt = new DateTime(2022, 7, 12),
+                    ReturnedAt = new DateTime(2023, 9, 1)
+                }
+            );
+            books[1].Status = Status.ToBeRead;
+            books[2].Status = Status.Finished;
+            books[2].UserNote = "Des nouvelles de SF. Super auteur à découvrir !";
+            books[2].UserRating = 4.8f;
+            books[3].Status = Status.Finished;
+            books[3].UserRating = 4.0f;
+            loans.Add(
+                new Loan
+                {
+                    Id = "/loans/02",
+                    Book = books[3],
+                    Loaner = contacts[2],
+                    LoanedAt = new DateTime(2020, 12, 23),
+                    ReturnedAt = new DateTime(2021, 8, 13)
+                }
+            );
+            books[4].Status = Status.Finished;
+            books[4].UserNote = "Déjà moins connu que le premier, et pourtant...";
+            books[4].UserRating = 4.2f;
+            books[5].Status = Status.Finished;
+            books[5].UserNote =
+                "Coup de coeur. Poétique, anarchique, philosophique... + SF. Du Deleuze et du Foucault chez Damasio";
+            books[5].UserRating = 4.9f;
+            books[6].Status = Status.NotRead;
+            books[7].Status = Status.Finished;
+            books[7].UserRating = 4.9f;
+            books[7].UserNote = "Chef d'oeuvre";
+            books[8].Status = Status.Finished;
+            books[8].UserRating = 4.2f;
+            books[8].UserNote = "Des nouvelles très réussies dont Rapport Minoritaire";
+            books[9].Status = Status.ToBeRead;
+            books[9].Status = Status.Reading;
+
+            borrowings.Add(
+                new Borrowing
+                {
+                    Id = "/borrowing/01",
+                    Owner = contacts[0],
+                    Book = LibraryMgr.GetBookById("/books/OL27328194M").Result,
+                    BorrowedAt = new DateTime(2023, 9, 7)
+                }
+            );
+            borrowings.Add(
+                new Borrowing
+                {
+                    Id = "/borrowing/02",
+                    Owner = contacts[1],
+                    Book = LibraryMgr.GetBookById("/books/OL27989051M").Result,
+                    BorrowedAt = new DateTime(2022, 7, 7),
+                    ReturnedAt = new DateTime(2023, 3, 1)
+                }
+            );
+            borrowings.Add(
+                new Borrowing
+                {
+                    Id = "/borrowing/03",
+                    Owner = contacts[1],
+                    Book = LibraryMgr.GetBookById("/books/OL35698073M").Result,
+                    BorrowedAt = new DateTime(2022, 7, 7),
+                    ReturnedAt = new DateTime(2022, 9, 1)
+                }
+            );
+            borrowings.Add(
+                new Borrowing
+                {
+                    Id = "/borrowing/04",
+                    Owner = contacts[1],
+                    Book = LibraryMgr.GetBookById("/books/OL35698083M").Result,
+                    BorrowedAt = new DateTime(2022, 7, 7),
+                    ReturnedAt = new DateTime(2023, 8, 30)
+                }
+            );
+        }
+
+        public Task<Book> AddBook(Book book)
+        {
+            if (Books.Contains(book))
+            {
+                return Task.FromResult<Book>(null);
+            }
+            books.Add(book);
+            return Task.FromResult(book);
+        }
+
+        public async Task<Book> AddBook(string id)
+        {
+            if (Books.SingleOrDefault(b => b.Id == id) != null)
+            {
+                return null;
+            }
+            var book = await LibraryMgr.GetBookById(id);
+            books.Add(book);
+            return book;
+        }
+
+        public async Task<Book> AddBookByIsbn(string isbn)
+        {
+            if (Books.SingleOrDefault(b => b.ISBN13 == isbn) != null)
+            {
+                return null;
+            }
+            var book = await LibraryMgr.GetBookByISBN(isbn);
+            books.Add(book);
+            return book;
+        }
+
+        public Task<bool> RemoveBook(Book book)
+        {
+            return Task.FromResult(books.Remove(book));
+        }
+
+        public Task<bool> RemoveBook(string id)
+        {
+            return Task.FromResult(books.RemoveAll(b => b.Id == id) >= 0);
+        }
+
+        public Task<bool> RemoveBookByIsbn(string isbn)
+        {
+            return Task.FromResult(books.RemoveAll(b => b.ISBN13 == isbn) >= 0);
+        }
+
+        public Task<bool> AddToFavorites(Book book)
+        {
+            if (Favorites.Contains(book))
+            {
+                return Task.FromResult(false);
+            }
+            var bookToAdd = Books.SingleOrDefault(b => b.Id == book.Id);
+            if (bookToAdd == null)
+            {
+                return Task.FromResult(false);
+            }
+            favorites.Add(bookToAdd);
+            return Task.FromResult(true);
+        }
+
+        public Task<bool> AddToFavorites(string bookId)
+        {
+            if (Favorites.SingleOrDefault(b => b.Id == bookId) != null)
+            {
+                return Task.FromResult(false);
+            }
+            var book = Books.SingleOrDefault(b => b.Id == bookId);
+            if (book == null)
+            {
+                return Task.FromResult(false);
+            }
+            favorites.Add(book);
+            return Task.FromResult(true);
+        }
+
+        public Task<bool> RemoveFromFavorites(Book book)
+        {
+            return Task.FromResult(favorites.Remove(book));
+        }
+
+        public Task<bool> RemoveFromFavorites(string bookId)
+        {
+            return Task.FromResult(favorites.RemoveAll(b => b.Id == bookId) >= 0);
+        }
+
+        public Task<Contact> AddContact(Contact contact)
+        {
+            if (Contacts.Contains(contact))
+            {
+                return Task.FromResult<Contact>(null);
+            }
+            contacts.Add(contact);
+            return Task.FromResult(contact);
+        }
+
+        public Task<bool> RemoveContact(Contact contact)
+        {
+            return Task.FromResult(contacts.Remove(contact));
+        }
+
+        public Task<bool> LendBook(Book book, Contact contact, DateTime? loanDate = null)
+        {
+            if (!Books.Contains(book))
+                return Task.FromResult(false);
+            if (!Contacts.Contains(contact))
+                AddContact(contact);
+            Loan loan = new Loan
+            {
+                Book = book,
+                Loaner = contact,
+                LoanedAt = loanDate.GetValueOrDefault(DateTime.Now)
+            };
+            if (Loans.Contains(loan))
+                return Task.FromResult(false);
+            loans.Add(loan);
+            return Task.FromResult(true);
+        }
+
+        public Task<bool> GetBackBook(Book book, DateTime? returnedDate = null)
+        {
+            if (!Books.Contains(book))
+                return Task.FromResult(false);
+            var loan = loans.SingleOrDefault(l => l.Book == book);
+            if (loan == null)
+                return Task.FromResult(false);
+            loan.ReturnedAt = returnedDate.GetValueOrDefault(DateTime.Now);
+            return Task.FromResult(true);
+        }
+
+        public Task<bool> BorrowBook(Book book, Contact owner, DateTime? borrowedDate = null)
+        {
+            if (!Books.Contains(book))
+                return Task.FromResult(false);
+            if (!Contacts.Contains(owner))
+                AddContact(owner);
+            Borrowing borrow = new Borrowing
+            {
+                Book = book,
+                Owner = owner,
+                BorrowedAt = borrowedDate.GetValueOrDefault(DateTime.Now)
+            };
+            if (Borrowings.Contains(borrow))
+                return Task.FromResult(false);
+            borrowings.Add(borrow);
+            return Task.FromResult(true);
+        }
+
+        public Task<bool> GiveBackBook(Book book, DateTime? returnedDate = null)
+        {
+            if (!Books.Contains(book))
+                return Task.FromResult(false);
+            var borrow = borrowings.SingleOrDefault(b => b.Book == book);
+            if (borrow == null)
+                return Task.FromResult(false);
+            borrow.ReturnedAt = returnedDate.GetValueOrDefault(DateTime.Now);
+            return Task.FromResult(true);
+        }
+
+        public Task<Book> GetBookById(string id)
+        {
+            return Task.FromResult(Books.SingleOrDefault(b => b.Id == id));
+        }
+
+        public Task<Book> GetBookByISBN(string isbn)
+        {
+            return Task.FromResult(Books.SingleOrDefault(b => b.ISBN13 == isbn));
+        }
+
+        public Task<Tuple<long, IEnumerable<Book>>> GetBooksByTitle(
+            string title,
+            int index,
+            int count,
+            string sort = ""
+        )
+        {
+            var foundBooks = Books.Where(
+                b => b.Title.Contains(title, StringComparison.InvariantCultureIgnoreCase)
+            );
+            return OrderBooks(foundBooks, index, count, sort);
+        }
+
+        public Task<Tuple<long, IEnumerable<Book>>> GetBooksByAuthorId(
+            string authorId,
+            int index,
+            int count,
+            string sort = ""
+        )
+        {
+            var foundBooks = Books.Where(
+                b =>
+                    b.Authors.Exists(a => a.Id.Contains(authorId))
+                    || b.Works.Exists(w => w.Authors.Exists(a => a.Id.Contains(authorId)))
+            );
+            return OrderBooks(books, index, count, sort);
+        }
+
+        public Task<Tuple<long, IEnumerable<Book>>> GetBooksByAuthor(
+            string author,
+            int index,
+            int count,
+            string sort = ""
+        )
+        {
+            var foundBooks = Books.Where(b => ContainsAuthorName(b, author));
+            return OrderBooks(books, index, count, sort);
+        }
+
+        public IEnumerable<Author> Authors
+        {
+            get
+            {
+                var bookAuthors = Books.SelectMany(b => b.Authors);
+                var workAuthors = Books.SelectMany(b => b.Works).SelectMany(w => w.Authors);
+                return bookAuthors.Union(workAuthors).Distinct();
+            }
+        }
+
+        public Task<Author> GetAuthorById(string id)
+        {
+            return Task.FromResult(Authors.SingleOrDefault(a => a.Id == id));
+        }
+
+        private Task<Tuple<long, IEnumerable<Author>>> OrderAuthors(
+            IEnumerable<Author> authors,
+            int index,
+            int count,
+            string sort = ""
+        )
+        {
+            switch (sort)
+            {
+                case "name":
+                    authors = authors.OrderBy(a => a.Name);
+                    break;
+                case "name_reverse":
+                    authors = authors.OrderByDescending(a => a.Name);
+                    break;
+            }
+            return Task.FromResult(
+                Tuple.Create((long)authors.Count(), authors.Skip(index * count).Take(count))
+            );
+        }
+
+        public Task<Tuple<long, IEnumerable<Author>>> GetAuthorsByName(
+            string substring,
+            int index,
+            int count,
+            string sort = ""
+        )
+        {
+            var foundAuthors = Authors.Where(
+                a =>
+                    a.Name.Contains(substring, StringComparison.InvariantCultureIgnoreCase)
+                    || a.AlternateNames.Exists(
+                        alt => alt.Contains(substring, StringComparison.InvariantCultureIgnoreCase)
+                    )
+            );
+            return OrderAuthors(foundAuthors, index, count, sort);
+        }
+
+        public Task<Book> UpdateBook(Book updatedBook)
+        {
+            if (!books.Contains(updatedBook))
+            {
+                return Task.FromResult<Book>(null);
+            }
+            books.Remove(updatedBook);
+            books.Add(updatedBook);
+            return Task.FromResult(updatedBook);
+        }
+
+        private Task<Tuple<long, IEnumerable<Book>>> OrderBooks(
+            IEnumerable<Book> books,
+            int index,
+            int count,
+            string sort = ""
+        )
+        {
+            switch (sort)
+            {
+                case "title":
+                    books = books.OrderBy(b => b.Title);
+                    break;
+                case "title_reverse":
+                    books = books.OrderByDescending(b => b.Title);
+                    break;
+                case "new":
+                    books = books.OrderByDescending(b => b.PublishDate);
+                    break;
+                case "old":
+                    books = books.OrderBy(b => b.PublishDate);
+                    break;
+            }
+            return Task.FromResult(
+                Tuple.Create(books.LongCount(), books.Skip(index * count).Take(count))
+            );
+        }
+
+        private bool ContainsAuthorName(Book book, string name)
+        {
+            IEnumerable<Author> authors = new List<Author>();
+
+            if (book.Authors != null && book.Authors.Count > 0)
+            {
+                authors = authors.Union(book.Authors);
+            }
+            if (book.Works != null)
+            {
+                var worksAuthors = book.Works.SelectMany(w => w.Authors).ToList();
+                if (worksAuthors.Count > 0)
+                    authors = authors.Union(worksAuthors);
+            }
+            foreach (var author in authors)
+            {
+                if (
+                    author.Name.Contains(name, StringComparison.OrdinalIgnoreCase)
+                    || author.AlternateNames.Exists(
+                        alt => alt.Contains(name, StringComparison.OrdinalIgnoreCase)
+                    )
+                )
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        public Task<Tuple<long, IEnumerable<Book>>> GetBooksFromCollection(
+            int index,
+            int count,
+            string sort = ""
+        )
+        {
+            return OrderBooks(Books, index, count, sort);
+        }
+
+        public Task<Tuple<long, IEnumerable<Loan>>> GetCurrentLoans(int index, int count)
+        {
+            var currentLoans = Loans.Where(l => !l.ReturnedAt.HasValue);
+            return Task.FromResult(
+                Tuple.Create(currentLoans.LongCount(), currentLoans.Skip(index * count).Take(count))
+            );
+        }
+
+        public Task<Tuple<long, IEnumerable<Loan>>> GetPastLoans(int index, int count)
+        {
+            var currentLoans = Loans.Where(l => l.ReturnedAt.HasValue);
+            return Task.FromResult(
+                Tuple.Create(currentLoans.LongCount(), currentLoans.Skip(index * count).Take(count))
+            );
+        }
+
+        public Task<Tuple<long, IEnumerable<Borrowing>>> GetCurrentBorrowings(int index, int count)
+        {
+            var currentBorrowings = Borrowings.Where(l => !l.ReturnedAt.HasValue);
+            return Task.FromResult(
+                Tuple.Create(
+                    currentBorrowings.LongCount(),
+                    currentBorrowings.Skip(index * count).Take(count)
+                )
+            );
+        }
+
+        public Task<Tuple<long, IEnumerable<Borrowing>>> GetPastBorrowings(int index, int count)
+        {
+            var currentBorrowings = Borrowings.Where(l => l.ReturnedAt.HasValue);
+            return Task.FromResult(
+                Tuple.Create(
+                    currentBorrowings.LongCount(),
+                    currentBorrowings.Skip(index * count).Take(count)
+                )
+            );
+        }
+
+        public Task<Tuple<long, IEnumerable<Contact>>> GetContacts(int index, int count)
+        {
+            return Task.FromResult(
+                Tuple.Create(Contacts.LongCount(), Contacts.Skip(index * count).Take(count))
+            );
+        }
+    }
+}
diff --git a/Sources/StubbedDTO/Stub.cs b/Sources/StubbedDTO/Stub.cs
new file mode 100644
index 0000000..0c422f4
--- /dev/null
+++ b/Sources/StubbedDTO/Stub.cs
@@ -0,0 +1,270 @@
+using System.Data.SqlTypes;
+using System.Reflection;
+using DtoAbstractLayer;
+using JsonReader;
+using LibraryDTO;
+using static System.Reflection.Metadata.BlobBuilder;
+
+namespace StubbedDTO;
+
+public class Stub : IDtoManager
+{
+    public static List<AuthorDTO> Authors { get; set; } = new List<AuthorDTO>();
+
+    public static List<BookDTO> Books { get; set; } = new List<BookDTO>();
+
+    public static List<WorkDTO> Works { get; set; } = new List<WorkDTO>();
+
+    public static Assembly Assembly => typeof(Stub).Assembly;
+
+    static Stub()
+    {
+        foreach (
+            var resource in Assembly.GetManifestResourceNames().Where(n => n.Contains("authors"))
+        )
+        {
+            using (Stream stream = Assembly.GetManifestResourceStream(resource))
+            using (StreamReader reader = new StreamReader(stream))
+            {
+                Authors.Add(AuthorJsonReader.ReadAuthor(reader.ReadToEnd()));
+            }
+        }
+
+        foreach (
+            var resource in Assembly.GetManifestResourceNames().Where(n => n.Contains("works"))
+        )
+        {
+            var ratingsResource = resource
+                .Insert(resource.LastIndexOf('.'), ".ratings")
+                .Replace("works", "ratings");
+
+            using (Stream stream = Assembly.GetManifestResourceStream(resource))
+            using (StreamReader reader = new StreamReader(stream))
+            using (Stream streamRatings = Assembly.GetManifestResourceStream(ratingsResource))
+            using (StreamReader readerRatings = new StreamReader(streamRatings))
+            {
+                var work = WorkJsonReader.ReadWork(reader.ReadToEnd(), readerRatings.ReadToEnd());
+                if (work.Authors != null)
+                    foreach (var author in work.Authors.ToList())
+                    {
+                        var newAuthor = Authors.SingleOrDefault(a => a.Id == author.Id);
+                        work.Authors.Remove(author);
+                        work.Authors.Add(newAuthor);
+                    }
+                Works.Add(work);
+            }
+        }
+
+        foreach (
+            var resource in Assembly.GetManifestResourceNames().Where(n => n.Contains("books"))
+        )
+        {
+            using (Stream stream = Assembly.GetManifestResourceStream(resource))
+            using (StreamReader reader = new StreamReader(stream))
+            {
+                var book = BookJsonReader.ReadBook(reader.ReadToEnd());
+                foreach (var author in book.Authors.ToList())
+                {
+                    var newAuthor = Authors.SingleOrDefault(a => a.Id == author.Id);
+                    book.Authors.Remove(author);
+                    book.Authors.Add(newAuthor);
+                }
+                foreach (var work in book.Works.ToList())
+                {
+                    var newWork = Works.SingleOrDefault(w => w.Id == work.Id);
+                    book.Works.Remove(work);
+                    book.Works.Add(newWork);
+                }
+                Books.Add(book);
+            }
+        }
+    }
+
+    public Task<AuthorDTO> GetAuthorById(string id)
+    {
+        var author = Stub.Authors.SingleOrDefault(a => a.Id.Contains(id));
+        return Task.FromResult(author);
+    }
+
+    private Task<Tuple<long, IEnumerable<AuthorDTO>>> OrderAuthors(
+        IEnumerable<AuthorDTO> authors,
+        int index,
+        int count,
+        string sort = ""
+    )
+    {
+        switch (sort)
+        {
+            case "name":
+                authors = authors.OrderBy(a => a.Name);
+                break;
+            case "name_reverse":
+                authors = authors.OrderByDescending(a => a.Name);
+                break;
+        }
+        return Task.FromResult(
+            Tuple.Create((long)authors.Count(), authors.Skip(index * count).Take(count))
+        );
+    }
+
+    public async Task<Tuple<long, IEnumerable<AuthorDTO>>> GetAuthors(
+        int index,
+        int count,
+        string sort = ""
+    )
+    {
+        IEnumerable<AuthorDTO> authors = Stub.Authors;
+        return await OrderAuthors(authors, index, count, sort);
+    }
+
+    public async Task<Tuple<long, IEnumerable<AuthorDTO>>> GetAuthorsByName(
+        string name,
+        int index,
+        int count,
+        string sort = ""
+    )
+    {
+        var authors = Stub.Authors.Where(
+            a =>
+                a.Name.Contains(name, StringComparison.OrdinalIgnoreCase)
+                || a.AlternateNames.Exists(
+                    alt => alt.Contains(name, StringComparison.OrdinalIgnoreCase)
+                )
+        );
+        return await OrderAuthors(authors, index, count, sort);
+    }
+
+    public Task<BookDTO> GetBookById(string id)
+    {
+        var book = Stub.Books.SingleOrDefault(b => b.Id.Contains(id));
+        return Task.FromResult(book);
+    }
+
+    private Task<Tuple<long, IEnumerable<BookDTO>>> OrderBooks(
+        IEnumerable<BookDTO> books,
+        int index,
+        int count,
+        string sort = ""
+    )
+    {
+        switch (sort)
+        {
+            case "title":
+                books = books.OrderBy(b => b.Title);
+                break;
+            case "title_reverse":
+                books = books.OrderByDescending(b => b.Title);
+                break;
+            case "new":
+                books = books.OrderByDescending(b => b.PublishDate);
+                break;
+            case "old":
+                books = books.OrderBy(b => b.PublishDate);
+                break;
+        }
+        return Task.FromResult(
+            Tuple.Create(books.LongCount(), books.Skip(index * count).Take(count))
+        );
+    }
+
+    public async Task<Tuple<long, IEnumerable<BookDTO>>> GetBooks(
+        int index,
+        int count,
+        string sort = ""
+    )
+    {
+        var books = Stub.Books;
+        return await OrderBooks(books, index, count, sort);
+    }
+
+    public Task<BookDTO> GetBookByISBN(string isbn)
+    {
+        var book = Stub.Books.SingleOrDefault(
+            b => b.ISBN13.Equals(isbn, StringComparison.OrdinalIgnoreCase)
+        );
+        return Task.FromResult(book);
+    }
+
+    public async Task<Tuple<long, IEnumerable<BookDTO>>> GetBooksByTitle(
+        string title,
+        int index,
+        int count,
+        string sort = ""
+    )
+    {
+        var books = Stub.Books.Where(
+            b =>
+                b.Title.Contains(title, StringComparison.OrdinalIgnoreCase)
+                || b.Series.Exists(s => s.Contains(title, StringComparison.OrdinalIgnoreCase))
+        );
+        return await OrderBooks(books, index, count, sort);
+    }
+
+    public async Task<Tuple<long, IEnumerable<BookDTO>>> GetBooksByAuthorId(
+        string authorId,
+        int index,
+        int count,
+        string sort = ""
+    )
+    {
+        var books = Stub.Books.Where(
+            b =>
+                b.Authors.Exists(a => a.Id.Contains(authorId))
+                || b.Works.Exists(w => w.Authors.Exists(a => a.Id.Contains(authorId)))
+        );
+        return await OrderBooks(books, index, count, sort);
+    }
+
+    public async Task<Tuple<long, IEnumerable<BookDTO>>> GetBooksByAuthor(
+        string name,
+        int index,
+        int count,
+        string sort = ""
+    )
+    {
+        var books = Stub.Books.Where(b => ContainsAuthorName(b, name));
+        return await OrderBooks(books, index, count, sort);
+    }
+
+    private bool ContainsAuthorName(BookDTO book, string name)
+    {
+        IEnumerable<AuthorDTO> authors = new List<AuthorDTO>();
+
+        if (book.Authors != null && book.Authors.Count > 0)
+        {
+            authors = authors.Union(book.Authors);
+        }
+        if (book.Works != null)
+        {
+            var worksAuthors = book.Works.SelectMany(w => w.Authors).ToList();
+            if (worksAuthors.Count > 0)
+                authors = authors.Union(worksAuthors);
+        }
+        foreach (var author in authors)
+        {
+            if (
+                author.Name.Contains(name, StringComparison.OrdinalIgnoreCase)
+                || author.AlternateNames.Exists(
+                    alt => alt.Contains(name, StringComparison.OrdinalIgnoreCase)
+                )
+            )
+            {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public Task<Tuple<long, IEnumerable<WorkDTO>>> GetWorks(int index, int count)
+    {
+        long nbWorks = Stub.Works.Count;
+        var works = Stub.Works.Skip(index * count).Take(count);
+        return Task.FromResult(Tuple.Create(nbWorks, works));
+    }
+
+    public Task<long> GetNbAuthors() => Task.FromResult((long)Stub.Authors.Count);
+
+    public Task<long> GetNbBooks() => Task.FromResult((long)Stub.Books.Count);
+
+    public Task<long> GetNbWorks() => Task.FromResult((long)Stub.Works.Count);
+}
diff --git a/Sources/StubbedDTO/StubbedDTO.csproj b/Sources/StubbedDTO/StubbedDTO.csproj
new file mode 100644
index 0000000..8cc21a0
--- /dev/null
+++ b/Sources/StubbedDTO/StubbedDTO.csproj
@@ -0,0 +1,36 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <!--<ItemGroup>
+    <None Remove="books\" />
+    <None Remove="authors\" />
+    <None Remove="works\" />
+    <None Remove="ratings\" />
+    <None Remove="authors\OL13066A.json" />
+  </ItemGroup>-->
+  <ItemGroup>
+    <Folder Include="books\" />
+    <Folder Include="authors\" />
+    <Folder Include="works\" />
+    <Folder Include="ratings\" />
+  </ItemGroup>
+  <!--<ItemGroup>
+    <None Include="*\*.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
+    </None>
+  </ItemGroup>-->
+  <ItemGroup>
+    <ProjectReference Include="..\DtoAbstractLayer\DtoAbstractLayer.csproj" />
+    <ProjectReference Include="..\JsonReader\JsonReader.csproj" />
+    <ProjectReference Include="..\LibraryDTO\LibraryDTO.csproj" />
+  </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="*\*.json" />
+  </ItemGroup>
+</Project>
diff --git a/Sources/StubbedDTO/authors/OL13066A.json b/Sources/StubbedDTO/authors/OL13066A.json
new file mode 100644
index 0000000..0b42aae
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL13066A.json
@@ -0,0 +1 @@
+{"alternate_names": ["Herbert George Wells", "H. Wells"], "type": {"key": "/type/author"}, "key": "/authors/OL13066A", "photos": [14364506, 6255164, 6255163, 5542282], "birth_date": "21 September 1866", "wikipedia": "http://en.wikipedia.org/wiki/H._G._Wells", "title": "(Wells, H. G.(Herbert George))", "fuller_name": "Herbert George Wells", "remote_ids": {"project_gutenberg": "30", "librarything": "wellshg", "goodreads": "880695", "wikidata": "Q42511", "librivox": "146", "isni": "0000000122832703", "viaf": "97006424", "amazon": "B08JKH6BRG"}, "personal_name": "H. G. Wells", "source_records": ["amazon:0353051969", "amazon:1545593752", "amazon:0353360031", "amazon:0343204800", "amazon:0900948442", "amazon:0359695256", "amazon:1541399528", "bwb:9798748338851", "bwb:9798711942399", "amazon:154230038X", "bwb:9798515967789", "amazon:1548545791", "amazon:167576655X", "amazon:1096406985", "amazon:0342716778", "amazon:0343312492", "amazon:1642262722", "amazon:1539515087", "bwb:9798515810764", "bwb:9798594591745", "amazon:2329219377", "bwb:9798588040884", "amazon:151971002X", "amazon:2070500179", "amazon:1535132841", "ia:warofworlds0000well_p4j3", "bwb:9798589404036", "amazon:8380321359", "bwb:9798549302624", "amazon:1530609798", "amazon:1420938495", "amazon:1006147551", "bwb:9798458602198", "bwb:9798520694045", "bwb:9780342740260", "bwb:9798541851458", "bwb:9798653436154", "amazon:9385018116", "amazon:1014334756", "bwb:9798459326819", "bwb:9798796783801", "amazon:1006147721", "amazon:1536901911", "bwb:9798442116618", "bwb:9798446719273", "bwb:9798715872197", "bwb:9798411853216", "bwb:9781398812130", "bwb:9798537902386", "bwb:9798537873945", "bwb:9798578578908", "bwb:9798760273000", "bwb:9798708376572", "bwb:9780342996100", "promise:bwb_daily_pallets_2022-03-17", "bwb:9798833824375", "ia:warofworldsillus0000well", "bwb:9781958437681", "amazon:1298631807", "bwb:9798709836068", "promise:bwb_daily_pallets_2022-08-23", "bwb:9798685274663", "promise:bwb_daily_pallets_2022-08-01", "bwb:9781728974033", "bwb:9781731472441", "bwb:9781790605743", "marc:marc_columbia/Columbia-extract-20221130-030.mrc:206198520:1318", "bwb:9798840336311", "promise:bwb_daily_pallets_2022-12-19", "amazon:8461947932", "bwb:9798364688729", "amazon:201998198X", "bwb:9781549506130"], "name": "H. G. Wells", "death_date": "13 August 1946", "bio": "Herbert George Wells was an English author, best known for his work in the science fiction genre. He was also a prolific writer in many genres, including contemporary novels, history, politics and social commentary.", "latest_revision": 44, "revision": 44, "created": {"type": "/type/datetime", "value": "2008-04-01T03:28:50.625462"}, "last_modified": {"type": "/type/datetime", "value": "2023-08-31T06:46:36.893522"}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL152472A.json b/Sources/StubbedDTO/authors/OL152472A.json
new file mode 100644
index 0000000..1922458
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL152472A.json
@@ -0,0 +1 @@
+{"location": "Paris, France", "photos": [5548027], "type": {"key": "/type/author"}, "death_date": "24 November 1985", "alternate_names": ["Rene\u0301 Barjavel", "Barjavel Ren\u00e9", "Rene Barjavel", "Barjavel Rene"], "key": "/authors/OL152472A", "source_records": ["amazon:8498724929", "promise:bwb_daily_pallets_2022-03-17", "promise:bwb_daily_pallets_2021-02-03", "amazon:2070361691", "promise:bwb_daily_pallets_2021-02-17"], "birth_date": "1911-01-24", "name": "Ren\u00e9 Barjavel", "bio": "Ren\u00e9 Barjavel born in Nyons, France, the son of a baker. In 1914, while his father served in World War I, his mother ran the bakery, and he was left alone much of the time to discover the world through exploration and reading. His his mother died of sleeping sickness in 1922, when he was just 11 years old, and he was sent to boarding school in Nyons. In 1923, when his father was unable to pay the school's fees to continue his studies, he became the proteg\u00e9 of the school's director, Abel Boisselier, and accompanied him to the college in Cusset. During his stay there, which lasted until he ran out of funds in 1927, he continued to study literature. After leaving school, he worked worked several jobs, including as a real estate agent and a bank employee, until 1929 when he became a journalist in Progress Allier in Moulins.\r\n\r\nIn 1935, he met the publisher Robert Deno\u00ebl, and he moved to Paris to work at \u00c9ditions Deno\u00ebl. In 1936 he married Madeleine de Wattripont. While working at Deno\u00ebl, he continued to work as a journalist for the weekly Le Merle Blanc, where he wrote film reviews. In 1939, he joined the war with Germany and was sent to the Pyrenees, but returned to Paris when the armistice was declared and Deno\u00ebl re-opened his publishing house. During this time, his first novel, Roland, le chevalier plus fort que le lion (Roland, the Knight More Proud than the Lion) (1942), was published, with help from Deno\u00ebl. He wrote Le Voyageur imprudent (Future Times Three) in 1943, and became the first writer to present the famous grandfather paradox of time travel. In 1944 he became literary director at \u00c9ditions Deno\u00ebl. In 1945, Deno\u00ebl was killed.\r\n\r\nAfter the war, and the failure of his latest novel, Le diable l'emporte (The Devil Wins) (1948), he left novel-writing for the cinema. However, he contracted tuberculosis and ran out of money before completing his first project, \"Barabbas, pour qui Dieu ne fut qu\u2019un temps\". He spent some time recovering in the south of France, returning to Paris in 1951.\r\n\r\nHe worked as a screenwriter in Paris, and in 1962 he became involved in science fiction, at that time a growing fiction genre in France. He published the novel Colomb de la lune (Columbus of the Moon) in 1962. In 1968 he published La Nuit des temps (The Ice People), which was very successful and popular, and won the Prix des libraires. In 1969, he began a weekly column in the Sunday newspaper Les Libres Propos. In 1972, he was a co-founder of the Prix de science-fiction Apollo, and was on the jury. In 1981, at age 70, he stopped writing his columns in the Journal du Dimanche and resumed writing novels. He died in 1985, having written over 25 novels and several screenplays.", "wikipedia": "http://en.wikipedia.org/wiki/Ren%C3%A9_Barjavel", "personal_name": "Ren\u00e9 Barjavel", "remote_ids": {"viaf": "99967531", "wikidata": "Q562556", "isni": "0000000109285020"}, "latest_revision": 7, "revision": 7, "created": {"type": "/type/datetime", "value": "2008-04-01T03:28:50.625462"}, "last_modified": {"type": "/type/datetime", "value": "2023-02-20T12:24:20.987187"}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL1604887A.json b/Sources/StubbedDTO/authors/OL1604887A.json
new file mode 100644
index 0000000..1fa8745
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL1604887A.json
@@ -0,0 +1 @@
+{"photos": [8567902], "created": {"type": "/type/datetime", "value": "2008-04-01T03:28:50.625462"}, "latest_revision": 5, "name": "Ted Chiang", "key": "/authors/OL1604887A", "personal_name": "Ted Chiang", "revision": 5, "type": {"key": "/type/author"}, "last_modified": {"type": "/type/datetime", "value": "2020-09-30T12:42:07.389520"}, "remote_ids": {"viaf": "85807457", "wikidata": "Q503095", "isni": "0000000109218979"}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL1846639A.json b/Sources/StubbedDTO/authors/OL1846639A.json
new file mode 100644
index 0000000..4b82846
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL1846639A.json
@@ -0,0 +1,12 @@
+{
+  "name": "Michel Demuth",
+  "personal_name": "Michel Demuth",
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2008-08-26 02:41:15.604911"
+  },
+  "key": "/authors/OL1846639A",
+  "type": { "key": "/type/author" },
+  "id": 6527877,
+  "revision": 2
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL239209A.json b/Sources/StubbedDTO/authors/OL239209A.json
new file mode 100644
index 0000000..5b498cc
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL239209A.json
@@ -0,0 +1 @@
+{"name": "Michael A. Hiltzik", "personal_name": "Michael A. Hiltzik", "last_modified": {"type": "/type/datetime", "value": "2008-09-07 09:06:34.939911"}, "key": "/authors/OL239209A", "type": {"key": "/type/author"}, "id": 623786, "revision": 2}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL274606A.json b/Sources/StubbedDTO/authors/OL274606A.json
new file mode 100644
index 0000000..0718f7b
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL274606A.json
@@ -0,0 +1,34 @@
+{
+  "personal_name": "Dick, Philip K.",
+  "source_records": [ "amazon:8445007327", "bwb:9780722129562", "amazon:0792776232", "ia:pacificpark0000dick", "amazon:2277213799", "amazon:2266163019", "bwb:9798599263227", "amazon:1433276712", "ia:ejonescreoilmond0000dick", "amazon:6051719164", "amazon:6254493632", "amazon:2277117749", "amazon:1987781619", "amazon:1433248239", "amazon:1480594407" ],
+  "alternate_names": [ "Philip Kindred Dick", "Philip Dick", "Philip Kendred Dick", "Philip K Dick" ],
+  "bio": "Philip Kindred Dick was an American novelist, short story writer, and essayist whose published work during his lifetime was almost entirely in the science fiction genre. Dick explored sociological, political and metaphysical themes in novels dominated by monopolistic corporations, authoritarian governments, and altered states. In his later works, Dick's thematic focus strongly reflected his personal interest in metaphysics and theology. He often drew upon his own life experiences and addressed the nature of drug abuse, paranoia and schizophrenia, and transcendental experiences in novels such as A Scanner Darkly and VALIS.\r\n\r\nSource and more information: [Wikipedia (EN)](http://en.wikipedia.org/wiki/Philip_K._Dick)",
+  "type": { "key": "/type/author" },
+  "death_date": "2 March 1982",
+  "remote_ids": {
+    "isni": "0000000121251093",
+    "wikidata": "Q171091",
+    "viaf": "27063583"
+  },
+  "name": "Philip K. Dick",
+  "links": [
+    {
+      "title": "Wikipedia link to Philip K Dick",
+      "url": "http://en.wikipedia.org/wiki/Philip_K._Dick",
+      "type": { "key": "/type/link" }
+    }
+  ],
+  "photos": [ 6295259 ],
+  "birth_date": "16 December 1928",
+  "key": "/authors/OL274606A",
+  "latest_revision": 23,
+  "revision": 23,
+  "created": {
+    "type": "/type/datetime",
+    "value": "2008-04-01T03:28:50.625462"
+  },
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2022-11-29T21:21:41.951561"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL3113661A.json b/Sources/StubbedDTO/authors/OL3113661A.json
new file mode 100644
index 0000000..d552b51
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL3113661A.json
@@ -0,0 +1 @@
+{"name": "Pennac", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 08:14:56.482104"}, "key": "/authors/OL3113661A", "type": {"key": "/type/author"}, "id": 11969949, "revision": 1}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL3113900A.json b/Sources/StubbedDTO/authors/OL3113900A.json
new file mode 100644
index 0000000..1aa9add
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL3113900A.json
@@ -0,0 +1 @@
+{"name": "Gilles Goullet", "last_modified": {"type": "/type/datetime", "value": "2008-04-30 08:14:56.482104"}, "key": "/authors/OL3113900A", "type": {"key": "/type/author"}, "id": 11970651, "revision": 1}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL3113922A.json b/Sources/StubbedDTO/authors/OL3113922A.json
new file mode 100644
index 0000000..63fe25b
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL3113922A.json
@@ -0,0 +1,11 @@
+{
+  "name": "H\u00e9l\u00e8ne Collon",
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2008-04-30 08:14:56.482104"
+  },
+  "key": "/authors/OL3113922A",
+  "type": { "key": "/type/author" },
+  "id": 11970257,
+  "revision": 1
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL3980331A.json b/Sources/StubbedDTO/authors/OL3980331A.json
new file mode 100644
index 0000000..17a6d32
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL3980331A.json
@@ -0,0 +1,17 @@
+{
+  "name": "Alain Damasio",
+  "key": "/authors/OL3980331A",
+  "type": { "key": "/type/author" },
+  "remote_ids": { "wikidata": "Q2829704" },
+  "birth_date": "1 August 1969",
+  "latest_revision": 2,
+  "revision": 2,
+  "created": {
+    "type": "/type/datetime",
+    "value": "2008-04-30T20:50:18.033121"
+  },
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2022-12-19T19:05:32.693708"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL55888A.json b/Sources/StubbedDTO/authors/OL55888A.json
new file mode 100644
index 0000000..7f60050
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL55888A.json
@@ -0,0 +1 @@
+{"created": {"type": "/type/datetime", "value": "2008-04-01T03:28:50.625462"}, "latest_revision": 6, "name": "Daniel Pennac", "key": "/authors/OL55888A", "personal_name": "Daniel Pennac", "birth_date": "1944", "revision": 6, "type": {"key": "/type/author"}, "last_modified": {"type": "/type/datetime", "value": "2020-09-30T12:22:32.446485"}, "remote_ids": {"viaf": "29539018", "wikidata": "Q332689", "isni": "0000000121258295"}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL5989984A.json b/Sources/StubbedDTO/authors/OL5989984A.json
new file mode 100644
index 0000000..1ed7910
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL5989984A.json
@@ -0,0 +1 @@
+{"birth_date": "1802", "key": "/authors/OL5989984A", "personal_name": "Alexandre Dumas", "remote_ids": {"wikidata": "Q38337", "isni": "0000000121012885", "viaf": "51688902"}, "source_records": ["ia:lacomtessedechar0000duma_c0h3", "amazon:0343253933", "ia:sanjianke0008dazh", "amazon:1087918545", "amazon:1361580682", "amazon:1374919551", "amazon:2091870757", "amazon:2363583477", "bwb:9798725078565", "amazon:1374990906", "amazon:1374997609", "amazon:1374828378", "ia:lestroismousquet0000duma_h9z1", "amazon:1080726861", "amazon:1376310082", "amazon:1530054605", "amazon:1548458821", "amazon:2743400463", "amazon:1535180129"], "alternate_names": ["Da Zhong Ma", "Alexander Dumas", "Alejandro Dumas"], "type": {"key": "/type/author"}, "death_date": "1870", "name": "Alexandre Dumas", "title": "(Dumas, Alexandre, 1802-1870)", "photos": [12919454], "latest_revision": 30, "revision": 30, "created": {"type": "/type/datetime", "value": "2008-10-27T00:19:50.151000"}, "last_modified": {"type": "/type/datetime", "value": "2022-09-28T00:27:01.465804"}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL6982995A.json b/Sources/StubbedDTO/authors/OL6982995A.json
new file mode 100644
index 0000000..51ccd1e
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL6982995A.json
@@ -0,0 +1,36 @@
+{
+  "personal_name": "James S. A. Corey",
+  "remote_ids": {
+    "isni": "0000000382626033",
+    "viaf": "266413968",
+    "wikidata": "Q6142591"
+  },
+  "source_records": [ "amazon:1478933771", "amazon:1528822218", "amazon:1456121650", "bwb:9780356510385", "amazon:0678452547", "bwb:9780356517773" ],
+  "alternate_names": [ "Daniel Abraham", "Ty Franck", "James S.A. Corey", "James James S. A. Corey" ],
+  "type": { "key": "/type/author" },
+  "key": "/authors/OL6982995A",
+  "entity_type": "org",
+  "links": [
+    {
+      "title": "Source",
+      "url": "http://www.danielabraham.com/james-s-a-corey/",
+      "type": { "key": "/type/link" }
+    }
+  ],
+  "bio": {
+    "type": "/type/text",
+    "value": "James S.A. Corey is the pen name used by collaborators [Daniel Abraham](https://openlibrary.org/authors/OL1427729A/Daniel_Abraham) and [Ty Franck](https://openlibrary.org/authors/OL7523472A/Ty_Franck).\r\n\r\nThe first and last name are taken from Abraham's and Franck's middle names, respectively, and S.A. are the initials of Abraham's daughter."
+  },
+  "photos": [ 11112303 ],
+  "name": "James S. A. Corey",
+  "latest_revision": 13,
+  "revision": 13,
+  "created": {
+    "type": "/type/datetime",
+    "value": "2011-10-20T08:06:05.906616"
+  },
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2023-05-18T18:14:26.659278"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL7468980A.json b/Sources/StubbedDTO/authors/OL7468980A.json
new file mode 100644
index 0000000..be1c440
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL7468980A.json
@@ -0,0 +1 @@
+{"source_records": ["bwb:9781801108454"], "type": {"key": "/type/author"}, "personal_name": "Adrian Tchaikovsky", "links": [{"title": "Wikipedia", "url": "https://en.wikipedia.org/wiki/Adrian_Tchaikovsky", "type": {"key": "/type/link"}}], "birth_date": "1972", "name": "Adrian Tchaikovsky", "key": "/authors/OL7468980A", "remote_ids": {"storygraph": "5a684299-8db8-4c82-8f0c-26f2c6c8ad7b", "viaf": "102929550", "wikidata": "Q4685389"}, "latest_revision": 8, "revision": 8, "created": {"type": "/type/datetime", "value": "2019-03-06T04:53:32.329596"}, "last_modified": {"type": "/type/datetime", "value": "2023-08-07T23:24:42.671051"}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL7475792A.json b/Sources/StubbedDTO/authors/OL7475792A.json
new file mode 100644
index 0000000..777b623
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL7475792A.json
@@ -0,0 +1,15 @@
+{
+  "key": "/authors/OL7475792A",
+  "name": "Ada Palmer",
+  "type": { "key": "/type/author" },
+  "latest_revision": 4,
+  "revision": 4,
+  "created": {
+    "type": "/type/datetime",
+    "value": "2019-03-11T19:38:25.579004"
+  },
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2021-12-07T07:11:29.213401"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL7876839A.json b/Sources/StubbedDTO/authors/OL7876839A.json
new file mode 100644
index 0000000..15d1ff6
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL7876839A.json
@@ -0,0 +1 @@
+{"name": "Robert Charles Wilson", "created": {"type": "/type/datetime", "value": "2020-05-08T21:00:30.785249"}, "last_modified": {"type": "/type/datetime", "value": "2020-05-08T21:00:30.785249"}, "latest_revision": 1, "key": "/authors/OL7876839A", "type": {"key": "/type/author"}, "revision": 1}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL79034A.json b/Sources/StubbedDTO/authors/OL79034A.json
new file mode 100644
index 0000000..ce17b23
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL79034A.json
@@ -0,0 +1,42 @@
+{
+  "remote_ids": {
+    "viaf": "59083797",
+    "wikidata": "Q7934",
+    "isni": "0000000121347853"
+  },
+  "name": "Frank Herbert",
+  "source_records": [ "amazon:3870703903", "amazon:2253113190", "amazon:1427228493" ],
+  "alternate_names": [ "Herbert, Frank", "FRANK HERBERT", "Frank HERBERT", "herbert-frank", "frank herbert", "Herbert Frank", "Frank Herbert Dost Korpe", "HERBERT FRANK", "Franck Herbert", "F Herbert" ],
+  "photos": [ 12194537, 7277115, 10643754 ],
+  "links": [
+    {
+      "url": "http://en.wikipedia.org/wiki/Frank_Herbert",
+      "type": { "key": "/type/link" },
+      "title": "Wikipedia English"
+    },
+    {
+      "url": "http://fr.wikipedia.org/wiki/Frank_Herbert",
+      "type": { "key": "/type/link" },
+      "title": "Wikipedia France"
+    }
+  ],
+  "key": "/authors/OL79034A",
+  "birth_date": "8 October 1920",
+  "death_date": "11 February 1986",
+  "type": { "key": "/type/author" },
+  "personal_name": "Herbert, Frank.",
+  "bio": {
+    "type": "/type/text",
+    "value": "Real name: Franklin Patrick Herbert Jr."
+  },
+  "latest_revision": 15,
+  "revision": 15,
+  "created": {
+    "type": "/type/datetime",
+    "value": "2008-04-01T03:28:50.625462"
+  },
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2021-11-12T11:41:55.357817"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/authors/OL9956442A.json b/Sources/StubbedDTO/authors/OL9956442A.json
new file mode 100644
index 0000000..3b660a9
--- /dev/null
+++ b/Sources/StubbedDTO/authors/OL9956442A.json
@@ -0,0 +1,16 @@
+{
+  "type": { "key": "/type/author" },
+  "name": "Frank Herbert",
+  "key": "/authors/OL9956442A",
+  "source_records": [ "amazon:2221252306" ],
+  "latest_revision": 1,
+  "revision": 1,
+  "created": {
+    "type": "/type/datetime",
+    "value": "2021-11-14T17:07:35.515652"
+  },
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2021-11-14T17:07:35.515652"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL18547803M.json b/Sources/StubbedDTO/books/OL18547803M.json
new file mode 100644
index 0000000..560396c
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL18547803M.json
@@ -0,0 +1,35 @@
+{
+  "publishers": [ "Denoe\u0308l" ],
+  "title": "Le voyageur imprudent.",
+  "notes": {
+    "type": "/type/text",
+    "value": "French text."
+  },
+  "identifiers": {
+    "librarything": [ "182578" ],
+    "goodreads": [ "106786" ]
+  },
+  "covers": [ 7267304 ],
+  "languages": [ { "key": "/languages/fre" } ],
+  "isbn_10": [ "2070364852" ],
+  "isbn_13": [ "9782070364852" ],
+  "publish_date": "1958",
+  "publish_country": "fr ",
+  "key": "/books/OL18547803M",
+  "authors": [ { "key": "/authors/OL152472A" } ],
+  "publish_places": [ "Paris" ],
+  "works": [ { "key": "/works/OL11466820W" } ],
+  "type": { "key": "/type/edition" },
+  "local_id": [ "urn:bwbsku:O6-CHO-999" ],
+  "source_records": [ "promise:bwb_daily_pallets_2022-05-23" ],
+  "latest_revision": 7,
+  "revision": 7,
+  "created": {
+    "type": "/type/datetime",
+    "value": "2008-10-17T19:42:31.933490"
+  },
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2023-01-14T06:54:32.286139"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL25910297M.json b/Sources/StubbedDTO/books/OL25910297M.json
new file mode 100644
index 0000000..b94543f
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL25910297M.json
@@ -0,0 +1,24 @@
+{
+  "publishers": [ "Actes Sud" ],
+  "title": "L'\u00c9veil du L\u00e9viathan",
+  "number_of_pages": 624,
+  "isbn_13": [ "9782330033118" ],
+  "covers": [ 7412481 ],
+  "languages": [ { "key": "/languages/fre" } ],
+  "publish_date": "4 juin 2014",
+  "key": "/books/OL25910297M",
+  "publish_places": [ "France" ],
+  "works": [ { "key": "/works/OL17334140W" } ],
+  "type": { "key": "/type/edition" },
+  "source_records": [ "amazon:2330033117" ],
+  "latest_revision": 5,
+  "revision": 5,
+  "created": {
+    "type": "/type/datetime",
+    "value": "2016-04-22T11:47:01.838591"
+  },
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2023-02-02T01:19:11.921173"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL26210208M.json b/Sources/StubbedDTO/books/OL26210208M.json
new file mode 100644
index 0000000..7a1e772
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL26210208M.json
@@ -0,0 +1,30 @@
+{
+  "publishers": [ "Gallimard" ],
+  "number_of_pages": 736,
+  "covers": [ 7891413 ],
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+  "type": { "key": "/type/edition" },
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+  "local_id": [ "urn:bwbsku:W7-DET-916" ],
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+    "value": "2017-01-01T23:14:47.314119"
+  },
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+    "type": "/type/datetime",
+    "value": "2022-12-04T13:20:06.799989"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL27258011M.json b/Sources/StubbedDTO/books/OL27258011M.json
new file mode 100644
index 0000000..384aa86
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL27258011M.json
@@ -0,0 +1,23 @@
+{
+  "publishers": [ "Editions Gallimard" ],
+  "source_records": [ "amazon:2070793109" ],
+  "title": "La m\u00e9nagerie de papier",
+  "identifiers": { "amazon": [ "2070793109" ] },
+  "isbn_13": [ "9782070793105" ],
+  "covers": [ 8750266 ],
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+    "type": "/type/datetime",
+    "value": "2019-08-05T10:36:44.503432"
+  },
+  "physical_format": "mass market paperback",
+  "isbn_10": [ "2070793109" ],
+  "latest_revision": 1,
+  "key": "/books/OL27258011M",
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2019-08-05T10:36:44.503432"
+  },
+  "works": [ { "key": "/works/OL20078005W" } ],
+  "type": { "key": "/type/edition" },
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+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL27328194M.json b/Sources/StubbedDTO/books/OL27328194M.json
new file mode 100644
index 0000000..4b5983b
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL27328194M.json
@@ -0,0 +1,26 @@
+{
+  "publishers": [ "Folio", "FOLIO", "GALLIMARD" ],
+  "source_records": [ "amazon:207285329X" ],
+  "title": "Dans la toile du temps",
+  "identifiers": { "amazon": [ "207285329X" ] },
+  "isbn_13": [ "9782072853296" ],
+  "covers": [ 8792712 ],
+  "physical_format": "mass market paperback",
+  "isbn_10": [ "207285329X" ],
+  "publish_date": "2019",
+  "key": "/books/OL27328194M",
+  "authors": [ { "key": "/authors/OL7468980A" } ],
+  "works": [ { "key": "/works/OL20148560W" } ],
+  "type": { "key": "/type/edition" },
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+    "value": "2019-10-02T21:11:02.625762"
+  },
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+    "value": "2023-04-07T18:08:17.514602"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL27989051M.json b/Sources/StubbedDTO/books/OL27989051M.json
new file mode 100644
index 0000000..878d598
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL27989051M.json
@@ -0,0 +1,38 @@
+{
+  "publishers": [ "Le B\u00e9lial'" ],
+  "subtitle": "Terra Ignota volume 2",
+  "covers": [ 9376451 ],
+  "physical_format": "paperback",
+  "full_title": "Sept redditions : Terra Ignota volume 2",
+  "key": "/books/OL27989051M",
+  "authors": [ { "key": "/authors/OL7475792A" } ],
+  "source_records": [ "amazon:2843449626" ],
+  "title": "Sept redditions",
+  "notes": "Source title: Sept redditions: Terra Ignota volume 2 (Roman)",
+  "number_of_pages": 544,
+  "publish_date": "May 28, 2020",
+  "works": [ { "key": "/works/OL19213555W" } ],
+  "type": { "key": "/type/edition" },
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+    {
+      "name": "Michelle Charrier",
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+    }
+  ],
+  "series": [ "Terra Ignota #2" ],
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+  "created": {
+    "type": "/type/datetime",
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+    "value": "2021-12-07T07:10:56.070304"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL28294024M.json b/Sources/StubbedDTO/books/OL28294024M.json
new file mode 100644
index 0000000..3b4234f
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL28294024M.json
@@ -0,0 +1,32 @@
+{
+  "publishers": [ "GALLIMARD" ],
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2020-06-28T05:17:49.626242"
+  },
+  "source_records": [ "amazon:2070469875" ],
+  "title": "La trilogie Spin",
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+    "type": "/type/text",
+    "value": "Source title: La trilogie Spin (Folio SF - XL) (French Edition)"
+  },
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+  "isbn_13": [ "9782070469871" ],
+  "covers": [ 10218906 ],
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+    "type": "/type/datetime",
+    "value": "2020-06-28T05:17:49.626242"
+  },
+  "physical_format": "paperback",
+  "isbn_10": [ "2070469875" ],
+  "publish_date": "Jun 02, 2016",
+  "key": "/books/OL28294024M",
+  "authors": [
+    { "key": "/authors/OL7876839A" },
+    { "key": "/authors/OL3113900A" }
+  ],
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+  "works": [ { "key": "/works/OL20889233W" } ],
+  "type": { "key": "/type/edition" },
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+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL28639494M.json b/Sources/StubbedDTO/books/OL28639494M.json
new file mode 100644
index 0000000..f5d7575
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL28639494M.json
@@ -0,0 +1,32 @@
+{
+  "publishers": [ "Pocket", "POCKET" ],
+  "source_records": [ "amazon:2266235818" ],
+  "title": "Le Cycle de Dune Tome 2/Le Messie de Dune",
+  "notes": {
+    "type": "/type/text",
+    "value": "Source title: Le Cycle de Dune Tome 2/Le Messie de Dune (Science-fiction) (French Edition)"
+  },
+  "number_of_pages": 336,
+  "isbn_13": [ "9782266235815" ],
+  "covers": [ 10328275 ],
+  "physical_format": "mass market paperback",
+  "isbn_10": [ "2266235818" ],
+  "publish_date": "Nov 22, 2012",
+  "key": "/books/OL28639494M",
+  "authors": [
+    { "key": "/authors/OL79034A" },
+    { "key": "/authors/OL1846639A" }
+  ],
+  "works": [ { "key": "/works/OL893526W" } ],
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+    "type": "/type/datetime",
+    "value": "2020-08-05T18:59:33.402965"
+  },
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+    "type": "/type/datetime",
+    "value": "2021-10-24T22:27:33.839388"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL35698073M.json b/Sources/StubbedDTO/books/OL35698073M.json
new file mode 100644
index 0000000..b6a949a
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL35698073M.json
@@ -0,0 +1,31 @@
+{
+  "identifiers": { "wikidata": [ "Q81118625" ] },
+  "title": "Trop semblable \u00e0 l'\u00e9clair",
+  "publish_date": "2019",
+  "publishers": [ "Le B\u00e9lial'" ],
+  "type": { "key": "/type/edition" },
+  "isbn_13": [ "9782843449581" ],
+  "series": [ "Terra Ignota #1" ],
+  "physical_format": "paperback",
+  "contributors": [
+    {
+      "name": "Michelle Charrier",
+      "role": "Translator"
+    }
+  ],
+  "languages": [ { "key": "/languages/fre" } ],
+  "key": "/books/OL35698073M",
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+  "works": [ { "key": "/works/OL19800093W" } ],
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+  },
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+    "value": "2022-11-15T15:47:17.497202"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL35698083M.json b/Sources/StubbedDTO/books/OL35698083M.json
new file mode 100644
index 0000000..006a950
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL35698083M.json
@@ -0,0 +1,32 @@
+{
+  "works": [ { "key": "/works/OL19635836W" } ],
+  "title": "La Volont\u00e9 de se battre",
+  "publishers": [ "Le B\u00e9lial'" ],
+  "publish_date": "2020",
+  "key": "/books/OL35698083M",
+  "type": { "key": "/type/edition" },
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+  "covers": [ 12392970 ],
+  "isbn_13": [ "9782843449758" ],
+  "classifications": {},
+  "languages": [ { "key": "/languages/fre" } ],
+  "contributors": [
+    {
+      "name": "Michelle Charrier",
+      "role": "Translator"
+    }
+  ],
+  "number_of_pages": 526,
+  "series": [ "Terra Ignota #3" ],
+  "physical_format": "paperback",
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+  "revision": 3,
+  "created": {
+    "type": "/type/datetime",
+    "value": "2021-12-07T02:23:07.593997"
+  },
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+    "type": "/type/datetime",
+    "value": "2021-12-07T02:24:57.135563"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL35699439M.json b/Sources/StubbedDTO/books/OL35699439M.json
new file mode 100644
index 0000000..62610a7
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL35699439M.json
@@ -0,0 +1,26 @@
+{
+  "type": { "key": "/type/edition" },
+  "title": "La Zone du Dehors",
+  "authors": [ { "key": "/authors/OL3980331A" } ],
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+  "source_records": [ "amazon:2072927528" ],
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+  "publishers": [ "FOLIO", "GALLIMARD" ],
+  "isbn_10": [ "2072927528" ],
+  "isbn_13": [ "9782072927522" ],
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+  "covers": [ 12393645 ],
+  "works": [ { "key": "/works/OL19960903W" } ],
+  "key": "/books/OL35699439M",
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+  "created": {
+    "type": "/type/datetime",
+    "value": "2021-12-07T22:26:13.534930"
+  },
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+    "type": "/type/datetime",
+    "value": "2021-12-07T22:26:13.534930"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL37758347M.json b/Sources/StubbedDTO/books/OL37758347M.json
new file mode 100644
index 0000000..5ff92b6
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL37758347M.json
@@ -0,0 +1,29 @@
+{
+  "type": { "key": "/type/edition" },
+  "title": "Tour de Babylone",
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+  "publishers": [ "Gallimard Education" ],
+  "isbn_10": [ "2070406881" ],
+  "isbn_13": [ "9782070406883" ],
+  "physical_format": "pocket book",
+  "notes": {
+    "type": "/type/text",
+    "value": "Source title: Tour de Babylone (Folio Science Fiction) (French Edition)"
+  },
+  "works": [ { "key": "/works/OL27687397W" } ],
+  "key": "/books/OL37758347M",
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+    "type": "/type/datetime",
+    "value": "2022-03-15T04:11:29.461242"
+  },
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+    "type": "/type/datetime",
+    "value": "2023-04-16T15:24:11.712871"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL38218739M.json b/Sources/StubbedDTO/books/OL38218739M.json
new file mode 100644
index 0000000..43e3f46
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL38218739M.json
@@ -0,0 +1,31 @@
+{
+  "type": { "key": "/type/edition" },
+  "title": "Dune - tome 1",
+  "authors": [
+    { "key": "/authors/OL9956442A" },
+    { "key": "/authors/OL1846639A" }
+  ],
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+  "source_records": [ "amazon:2266233203" ],
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+  "publishers": [ "POCKET", "Pocket" ],
+  "isbn_10": [ "2266233203" ],
+  "isbn_13": [ "9782266233200" ],
+  "physical_format": "pocket book",
+  "notes": {
+    "type": "/type/text",
+    "value": "Source title: Dune - tome 1 (1)"
+  },
+  "works": [ { "key": "/works/OL27962193W" } ],
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+  "created": {
+    "type": "/type/datetime",
+    "value": "2022-05-30T17:18:00.228322"
+  },
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+    "type": "/type/datetime",
+    "value": "2022-05-30T17:18:00.228322"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL38586212M.json b/Sources/StubbedDTO/books/OL38586212M.json
new file mode 100644
index 0000000..1ab8986
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL38586212M.json
@@ -0,0 +1,28 @@
+{
+  "type": { "key": "/type/edition" },
+  "title": "Total Recall et autres r\u00e9cits",
+  "authors": [
+    { "key": "/authors/OL274606A" },
+    { "key": "/authors/OL3113922A" }
+  ],
+  "publish_date": "Jul 12, 2012",
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+  "publishers": [ "FOLIO", "GALLIMARD" ],
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+  "isbn_13": [ "9782070448906" ],
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+  "works": [ { "key": "/works/OL28185064W" } ],
+  "key": "/books/OL38586212M",
+  "covers": [ 13858141 ],
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+  "created": {
+    "type": "/type/datetime",
+    "value": "2022-07-10T01:29:29.296699"
+  },
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+    "type": "/type/datetime",
+    "value": "2023-04-07T22:44:13.567567"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL8198056M.json b/Sources/StubbedDTO/books/OL8198056M.json
new file mode 100644
index 0000000..44f7ddf
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL8198056M.json
@@ -0,0 +1,38 @@
+{
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+  "identifiers": {
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+  },
+  "subtitle": "Xerox PARC and the Dawn of the Computer Age",
+  "weight": "13.9 ounces",
+  "covers": [ 684348 ],
+  "physical_format": "Paperback",
+  "key": "/books/OL8198056M",
+  "authors": [ { "key": "/authors/OL239209A" } ],
+  "subjects": [ "Industries - General", "Research", "Corporate & Business History - General", "California", "Business & Economics", "Business / Economics / Finance", "Palo Alto Research Center", "Business/Economics", "Palo Alto", "History", "Computer Industry", "Business & Economics / Industries", "Xerox Corporation.", "Computer Science" ],
+  "languages": [ { "key": "/languages/eng" } ],
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+    "type": "/type/text",
+    "value": "The photograph shows a handsome man in a checked sport shirt, his boyish face half-obscured by a cloud of pipe smoke."
+  },
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+  "isbn_13": [ "9780887309892" ],
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+    "type": "/type/datetime",
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+    "value": "2021-12-27T03:34:56.026678"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL8839071M.json b/Sources/StubbedDTO/books/OL8839071M.json
new file mode 100644
index 0000000..de43161
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL8839071M.json
@@ -0,0 +1,34 @@
+{
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+  "physical_format": "Mass Market Paperback",
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2020-07-15T08:55:39.381795"
+  },
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+  "key": "/books/OL8839071M",
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+  "languages": [ { "key": "/languages/fre" } ],
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+  },
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+    "type": "/type/datetime",
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+  },
+  "isbn_13": [ "9782070403684" ],
+  "isbn_10": [ "2070403688" ],
+  "publish_date": "October 3, 1997",
+  "works": [ { "key": "/works/OL705036W" } ],
+  "type": { "key": "/type/edition" },
+  "physical_dimensions": "7 x 4.2 x 0.9 inches",
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+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/books/OL9797565M.json b/Sources/StubbedDTO/books/OL9797565M.json
new file mode 100644
index 0000000..b271ba6
--- /dev/null
+++ b/Sources/StubbedDTO/books/OL9797565M.json
@@ -0,0 +1,29 @@
+{
+  "publishers": [ "Hachette" ],
+  "physical_format": "Unknown Binding",
+  "source_records": [ "amazon:2010144236:2-au:1680493645:142556", "promise:bwb_daily_pallets_2020-11-19", "promise:bwb_daily_pallets_2021-03-30" ],
+  "title": "L'homme Invisible",
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+  },
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+  "key": "/books/OL9797565M",
+  "authors": [ { "key": "/authors/OL13066A" } ],
+  "oclc_numbers": [ "417795539" ],
+  "works": [ { "key": "/works/OL52266W" } ],
+  "type": { "key": "/type/edition" },
+  "subjects": [ "Language readers" ],
+  "local_id": [ "urn:bwbsku:KO-352-184", "urn:bwbsku:UE-795-266" ],
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+  "revision": 9,
+  "created": {
+    "type": "/type/datetime",
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+  },
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+    "value": "2023-01-14T23:55:47.329525"
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+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL11466820W.ratings.json b/Sources/StubbedDTO/ratings/OL11466820W.ratings.json
new file mode 100644
index 0000000..c8f4130
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL11466820W.ratings.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL15505243W.ratings.json b/Sources/StubbedDTO/ratings/OL15505243W.ratings.json
new file mode 100644
index 0000000..aae3a34
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL15505243W.ratings.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL17334140W.ratings.json b/Sources/StubbedDTO/ratings/OL17334140W.ratings.json
new file mode 100644
index 0000000..536dae4
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL17334140W.ratings.json
@@ -0,0 +1,13 @@
+{
+  "summary": {
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+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL19213555W.ratings.json b/Sources/StubbedDTO/ratings/OL19213555W.ratings.json
new file mode 100644
index 0000000..3cc42e0
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL19213555W.ratings.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL19635836W.ratings.json b/Sources/StubbedDTO/ratings/OL19635836W.ratings.json
new file mode 100644
index 0000000..202f4ac
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL19635836W.ratings.json
@@ -0,0 +1,14 @@
+{
+  "summary": {
+    "average": 4.8,
+    "count": 5,
+    "sortable": 3.216059213089321
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+  "counts": {
+    "1": 0,
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+    "4": 1,
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+  }
+}
diff --git a/Sources/StubbedDTO/ratings/OL19800093W.ratings.json b/Sources/StubbedDTO/ratings/OL19800093W.ratings.json
new file mode 100644
index 0000000..0f30a8c
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL19800093W.ratings.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL1987733W.ratings.json b/Sources/StubbedDTO/ratings/OL1987733W.ratings.json
new file mode 100644
index 0000000..62b3ec6
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL1987733W.ratings.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL19960903W.ratings.json b/Sources/StubbedDTO/ratings/OL19960903W.ratings.json
new file mode 100644
index 0000000..14c4ff0
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL19960903W.ratings.json
@@ -0,0 +1,14 @@
+{
+  "summary": {
+    "average": 4.0,
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+    "sortable": 2.3286737413641063
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+    "4": 1,
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+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL20078005W.ratings.json b/Sources/StubbedDTO/ratings/OL20078005W.ratings.json
new file mode 100644
index 0000000..85e13a6
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL20078005W.ratings.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL20148560W.ratings.json b/Sources/StubbedDTO/ratings/OL20148560W.ratings.json
new file mode 100644
index 0000000..85e13a6
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL20148560W.ratings.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL20889233W.ratings.json b/Sources/StubbedDTO/ratings/OL20889233W.ratings.json
new file mode 100644
index 0000000..85e13a6
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL20889233W.ratings.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL27687397W.ratings.json b/Sources/StubbedDTO/ratings/OL27687397W.ratings.json
new file mode 100644
index 0000000..c8f4130
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL27687397W.ratings.json
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL27962193W.ratings.json b/Sources/StubbedDTO/ratings/OL27962193W.ratings.json
new file mode 100644
index 0000000..9accbc5
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL27962193W.ratings.json
@@ -0,0 +1,14 @@
+{
+  "summary": {
+    "average": 3.0,
+    "count": 1,
+    "sortable": 2.19488243981746
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+    "3": 1,
+    "4": 0,
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+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL28185064W.ratings.json b/Sources/StubbedDTO/ratings/OL28185064W.ratings.json
new file mode 100644
index 0000000..536dae4
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL28185064W.ratings.json
@@ -0,0 +1,13 @@
+{
+  "summary": {
+    "average": null,
+    "count": 0
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+  "counts": {
+    "1": 0,
+    "2": 0,
+    "3": 0,
+    "4": 0,
+    "5": 0
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+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL52266W.ratings.json b/Sources/StubbedDTO/ratings/OL52266W.ratings.json
new file mode 100644
index 0000000..7c1f4aa
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL52266W.ratings.json
@@ -0,0 +1 @@
+{"summary": {"average": 3.8266666666666667, "count": 75, "sortable": 3.5620352304827025}, "counts": {"1": 4, "2": 5, "3": 16, "4": 25, "5": 25}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL705036W.ratings.json b/Sources/StubbedDTO/ratings/OL705036W.ratings.json
new file mode 100644
index 0000000..cc7311b
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL705036W.ratings.json
@@ -0,0 +1 @@
+{"summary": {"average": 3.5, "count": 2, "sortable": 2.4163369210786563}, "counts": {"1": 0, "2": 0, "3": 1, "4": 1, "5": 0}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/ratings/OL893526W.ratings.json b/Sources/StubbedDTO/ratings/OL893526W.ratings.json
new file mode 100644
index 0000000..8b4cddd
--- /dev/null
+++ b/Sources/StubbedDTO/ratings/OL893526W.ratings.json
@@ -0,0 +1 @@
+{"summary": {"average": 3.9368421052631577, "count": 95, "sortable": 3.721132697535656}, "counts": {"1": 3, "2": 4, "3": 19, "4": 39, "5": 30}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL11466820W.json b/Sources/StubbedDTO/works/OL11466820W.json
new file mode 100644
index 0000000..55006cd
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL11466820W.json
@@ -0,0 +1 @@
+{"title": "Le voyageur imprudent", "key": "/works/OL11466820W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL152472A"}}], "type": {"key": "/type/work"}, "covers": [7267304], "first_publish_date": "1958", "latest_revision": 4, "revision": 4, "created": {"type": "/type/datetime", "value": "2009-12-11T04:42:14.137010"}, "last_modified": {"type": "/type/datetime", "value": "2023-02-20T15:43:39.602393"}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL15505243W.json b/Sources/StubbedDTO/works/OL15505243W.json
new file mode 100644
index 0000000..4876595
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL15505243W.json
@@ -0,0 +1 @@
+{"title": "La Horde du Contrevent", "key": "/works/OL15505243W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL3980331A"}}], "type": {"key": "/type/work"}, "covers": [6670450], "latest_revision": 2, "revision": 2, "created": {"type": "/type/datetime", "value": "2010-11-25T19:33:55.977790"}, "last_modified": {"type": "/type/datetime", "value": "2022-11-15T14:44:49.779753"}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL17334140W.json b/Sources/StubbedDTO/works/OL17334140W.json
new file mode 100644
index 0000000..839a824
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL17334140W.json
@@ -0,0 +1,22 @@
+{
+  "title": "L'\u00c9veil du L\u00e9viathan",
+  "key": "/works/OL17334140W",
+  "authors": [
+    {
+      "type": { "key": "/type/author_role" },
+      "author": { "key": "/authors/OL6982995A" }
+    }
+  ],
+  "type": { "key": "/type/work" },
+  "covers": [ 7412481 ],
+  "latest_revision": 3,
+  "revision": 3,
+  "created": {
+    "type": "/type/datetime",
+    "value": "2016-04-22T11:47:01.838591"
+  },
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2023-02-02T01:19:11.921173"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL19213555W.json b/Sources/StubbedDTO/works/OL19213555W.json
new file mode 100644
index 0000000..a758427
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL19213555W.json
@@ -0,0 +1 @@
+{"description": "\"It is a world in which near-instantaneous travel from continent to continent is free to all. In which automation now provides for everybody's basic needs. In which nobody living can remember an actual war. In which it is illegal for three or more people to gather for the practice of religion--but ecumenical \"sensayers\" minister in private, one-on-one. In which gendered language is archaic, and to dress as strongly male or female is, if not exactly illegal, deeply taboo. In which nationality is a fading memory, and most people identify instead with their choice of the seven global Hives, distinguished from one another by their different approaches to the big questions of life. And it is a world in which, unknown to most, the entire social order is teetering on the edge of collapse. Because even in utopia, humans will conspire. And also because something new has arisen: Bridger, the child who can bring inanimate objects to conscious life\"--", "covers": [8429595, 8772829, 9338105, 9376451], "key": "/works/OL19213555W", "authors": [{"author": {"key": "/authors/OL7475792A"}, "type": {"key": "/type/author_role"}}], "title": "Seven Surrenders", "subjects": ["Utopias", "Fiction", "Fiction, science fiction, general", "series:terra_ignota"], "type": {"key": "/type/work"}, "latest_revision": 6, "revision": 6, "created": {"type": "/type/datetime", "value": "2019-03-11T19:38:25.579004"}, "last_modified": {"type": "/type/datetime", "value": "2021-12-07T07:10:56.070304"}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL19635836W.json b/Sources/StubbedDTO/works/OL19635836W.json
new file mode 100644
index 0000000..6d7f024
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL19635836W.json
@@ -0,0 +1,24 @@
+{
+  "description": "\"The long years of near-utopia have come to an abrupt end. Peace and order are now figments of the past. Corruption, deception, and insurgency hum within the once steadfast leadership of the Hives, nations without fixed location. The heartbreaking truth is that for decades, even centuries, the leaders of the great Hives bought the world's stability with a trickle of secret murders, mathematically planned. So that no faction could ever dominate. So that the balance held. The Hives' fa\u00e7ade of solidity is the only hope they have for maintaining a semblance of order, for preventing the public from succumbing to the savagery and bloodlust of wars past. But as the great secret becomes more and more widely known, that fa\u00e7ade is slipping away. Just days earlier, the world was a pinnacle of human civilization. Now everyone--Hives and hiveless, Utopians and sensayers, emperors and the downtrodden, warriors and saints--scrambles to prepare for the seemingly inevitable war\"--",
+  "covers": [ 8544084, 8619055, 10180814 ],
+  "key": "/works/OL19635836W",
+  "authors": [
+    {
+      "author": { "key": "/authors/OL7475792A" },
+      "type": { "key": "/type/author_role" }
+    }
+  ],
+  "title": "The Will to Battle",
+  "subjects": [ "Utopias", "Fiction", "Fiction, science fiction, general", "series:terra_ignota" ],
+  "type": { "key": "/type/work" },
+  "latest_revision": 7,
+  "revision": 7,
+  "created": {
+    "type": "/type/datetime",
+    "value": "2019-04-21T08:07:12.674468"
+  },
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2021-12-07T07:08:28.885088"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL19800093W.json b/Sources/StubbedDTO/works/OL19800093W.json
new file mode 100644
index 0000000..8d9df69
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL19800093W.json
@@ -0,0 +1 @@
+{"description": "\"The world into which Mycroft and Carlyle have been born is as strange to our 21st-century eyes as ours would be to a native of the 1500s. It is a hard-won utopia built on technologically-generated abundance, and also on complex and mandatory systems of labeling all public writing and speech... And in this world, Mycroft and Carlyle have stumbled on the wild card that may destabilize the system: the boy Bridger, who can effortlessly make his wishes come true. Who can, it would seem, bring inanimate objects to life...\"--Book jacket.", "covers": [8600692, 8673756], "key": "/works/OL19800093W", "authors": [{"author": {"key": "/authors/OL7475792A"}, "type": {"key": "/type/author_role"}}], "title": "Too Like the Lightning", "subjects": ["Utopias", "Prisoners", "Twenty-fifth century", "Fiction", "Third millennium", "Fiction, science fiction, general", "series:terra_ignota", "Spirituality", "Magic", "FICTION", "Science Fiction"], "type": {"key": "/type/work"}, "latest_revision": 6, "revision": 6, "created": {"type": "/type/datetime", "value": "2019-06-23T20:50:30.749828"}, "last_modified": {"type": "/type/datetime", "value": "2022-03-12T06:35:56.153258"}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL1987733W.json b/Sources/StubbedDTO/works/OL1987733W.json
new file mode 100644
index 0000000..12f7a00
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL1987733W.json
@@ -0,0 +1 @@
+{"subtitle": "Xerox PARC and the dawn of the computer age", "description": {"type": "/type/text", "value": "In the bestselling tradition of The Soul of a New Machine, Dealers of Lightning is a fascinating journey of intellectual creation. In the 1970s and '80s, Xerox Corporation brought together a brain-trust of engineering geniuses, a group of computer eccentrics dubbed PARC. This brilliant group created several monumental innovations that triggered a technological revolution, including the first personal computer, the laser printer, and the graphical interface (one of the main precursors of the Internet), only to see these breakthroughs rejected by the corporation. Yet, instead of giving up, these determined inventors turned their ideas into empires that radically altered contemporary life and changed the world.Based on extensive interviews with the scientists, engineers, administrators, and executives who lived the story, this riveting chronicle details PARC's humble beginnings through its triumph as a hothouse for ideas, and shows why Xerox was never able to grasp, and ultimately exploit, the cutting-edge innovations PARC delivered. Dealers of Lightning offers an unprecedented look at the ideas, the inventions, and the individuals that propelled Xerox PARC to the frontier of technohistory--and the corporate machinations that almost prevented it from achieving greatness."}, "title": "Dealers of Lightning", "lc_classifications": ["QA76.27 .H55 1999"], "covers": [684348], "first_sentence": {"type": "/type/text", "value": "The photograph shows a handsome man in a checked sport shirt, his boyish face half-obscured by a cloud of pipe smoke."}, "subject_places": ["California", "Palo Alto"], "first_publish_date": "1999", "key": "/works/OL1987733W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL239209A"}}], "dewey_number": ["004/.0720794/73"], "type": {"key": "/type/work"}, "subjects": ["History", "Research", "Xerox Corporation. Palo Alto Research Center", "Computer science", "Xerox Corporation", "Microcomputers", "Grafische gebruikersinterfaces", "Computer scientists", "Computers, history", "Xerox corporation", "Computer industry"], "latest_revision": 13, "revision": 13, "created": {"type": "/type/datetime", "value": "2009-12-09T22:40:23.717604"}, "last_modified": {"type": "/type/datetime", "value": "2021-12-25T12:06:42.488356"}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL19960903W.json b/Sources/StubbedDTO/works/OL19960903W.json
new file mode 100644
index 0000000..ba6654e
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL19960903W.json
@@ -0,0 +1,22 @@
+{
+  "title": "La zone du dehors",
+  "key": "/works/OL19960903W",
+  "authors": [
+    {
+      "type": { "key": "/type/author_role" },
+      "author": { "key": "/authors/OL3980331A" }
+    }
+  ],
+  "type": { "key": "/type/work" },
+  "covers": [ 13472433 ],
+  "latest_revision": 2,
+  "revision": 2,
+  "created": {
+    "type": "/type/datetime",
+    "value": "2019-07-17T23:01:16.580404"
+  },
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2023-03-15T21:59:10.897047"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL20078005W.json b/Sources/StubbedDTO/works/OL20078005W.json
new file mode 100644
index 0000000..bb2c7ec
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL20078005W.json
@@ -0,0 +1,16 @@
+{
+  "title": "La m\u00e9nagerie de papier",
+  "created": {
+    "type": "/type/datetime",
+    "value": "2019-08-05T10:36:44.503432"
+  },
+  "covers": [ 8750266 ],
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2019-08-05T10:36:44.503432"
+  },
+  "latest_revision": 1,
+  "key": "/works/OL20078005W",
+  "type": { "key": "/type/work" },
+  "revision": 1
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL20148560W.json b/Sources/StubbedDTO/works/OL20148560W.json
new file mode 100644
index 0000000..cd5c9f4
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL20148560W.json
@@ -0,0 +1 @@
+{"title": "Dans la toile du temps", "created": {"type": "/type/datetime", "value": "2019-10-02T21:11:02.625762"}, "covers": [8792712], "last_modified": {"type": "/type/datetime", "value": "2019-10-02T21:11:02.625762"}, "latest_revision": 1, "key": "/works/OL20148560W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL7468980A"}}], "type": {"key": "/type/work"}, "revision": 1}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL20889233W.json b/Sources/StubbedDTO/works/OL20889233W.json
new file mode 100644
index 0000000..11b0d93
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL20889233W.json
@@ -0,0 +1 @@
+{"title": "La trilogie Spin", "created": {"type": "/type/datetime", "value": "2020-06-28T05:17:49.626242"}, "covers": [10218906], "last_modified": {"type": "/type/datetime", "value": "2020-06-28T05:17:49.626242"}, "latest_revision": 1, "key": "/works/OL20889233W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL7876839A"}}, {"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL3113900A"}}], "type": {"key": "/type/work"}, "revision": 1}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL27687397W.json b/Sources/StubbedDTO/works/OL27687397W.json
new file mode 100644
index 0000000..447a835
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL27687397W.json
@@ -0,0 +1 @@
+{"type": {"key": "/type/work"}, "title": "Tour de Babylone", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL1604887A"}}], "key": "/works/OL27687397W", "covers": [14058074], "latest_revision": 2, "revision": 2, "created": {"type": "/type/datetime", "value": "2022-03-15T04:11:29.461242"}, "last_modified": {"type": "/type/datetime", "value": "2023-04-16T15:24:11.712871"}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL27962193W.json b/Sources/StubbedDTO/works/OL27962193W.json
new file mode 100644
index 0000000..4eefdac
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL27962193W.json
@@ -0,0 +1,26 @@
+{
+  "type": { "key": "/type/work" },
+  "title": "Dune - tome 1",
+  "authors": [
+    {
+      "type": { "key": "/type/author_role" },
+      "author": { "key": "/authors/OL9956442A" }
+    },
+    {
+      "type": { "key": "/type/author_role" },
+      "author": { "key": "/authors/OL1846639A" }
+    }
+  ],
+  "key": "/works/OL27962193W",
+  "covers": [ 13823878 ],
+  "latest_revision": 2,
+  "revision": 2,
+  "created": {
+    "type": "/type/datetime",
+    "value": "2022-05-30T17:18:00.228322"
+  },
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2023-04-04T09:05:11.531979"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL28185064W.json b/Sources/StubbedDTO/works/OL28185064W.json
new file mode 100644
index 0000000..9a83844
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL28185064W.json
@@ -0,0 +1,26 @@
+{
+  "type": { "key": "/type/work" },
+  "title": "Total Recall et autres r\u00e9cits",
+  "authors": [
+    {
+      "type": { "key": "/type/author_role" },
+      "author": { "key": "/authors/OL274606A" }
+    },
+    {
+      "type": { "key": "/type/author_role" },
+      "author": { "key": "/authors/OL3113922A" }
+    }
+  ],
+  "key": "/works/OL28185064W",
+  "covers": [ 13858141 ],
+  "latest_revision": 3,
+  "revision": 3,
+  "created": {
+    "type": "/type/datetime",
+    "value": "2022-07-10T01:29:29.296699"
+  },
+  "last_modified": {
+    "type": "/type/datetime",
+    "value": "2023-04-07T22:44:13.567567"
+  }
+}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL52266W.json b/Sources/StubbedDTO/works/OL52266W.json
new file mode 100644
index 0000000..f988f6f
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL52266W.json
@@ -0,0 +1 @@
+{"description": "This book is the story of Griffin, a scientist who creates a serum to render himself invisible, and his descent into madness that follows.", "covers": [6419199, 8237014, 368526, 2324378, 911204, 278563, 1260699, 1964114, 1288569, 11876542, 6160924, 2972211, 6930045, 8443536, 8460593, 8586633, 8597931, 8665880, 8665881, 8782856, 8783092, 8890102, 9071724, 9195165, 10187589, 10767011, 8785301, 8915576, 9177146, 10079814, 10105791, 10455175, 11194264, 5268879, 11515689, 11652598, 12029238, 8571040, 11475787, 10508513, 12106436, 10562269, 8757822, 11312159, 8423448, 10630463, 406825, 11642139, 2132527, 8389242, 10849644, 10850558, 12119680, 8775825, 11514004, 10690885], "key": "/works/OL52266W", "authors": [{"author": {"key": "/authors/OL13066A"}, "type": {"key": "/type/author_role"}}], "title": "The Invisible Man", "subjects": ["Ciencia-ficci\u00f3n", "Classic Literature", "Fiction", "Mentally ill", "Science Fiction & Fantasy", "Science fiction", "Scientists", "English Science fiction", "Experiments", "Adaptations", "Time travel", "British and irish fiction (fictional works by one author)", "England, fiction", "Scientists, fiction", "Children's fiction", "Mystery and detective stories", "Literature and fiction, science fiction", "Fiction, science fiction, general", "English literature", "English fiction, history and criticism, 20th century", "Wells, h. g. (herbert george), 1866-1946", "FICTION / Classics", "FICTION / Science Fiction / General", "FICTION / Horror", "Juvenile fiction", "Science", "Roman pour la jeunesse", "Comic and Graphic Books", "Cartoons and comics", "Comic books, strips", "Animal experimentation", "English language", "French", "Korean", "German", "Fiction, general", "Fiction, historical, general", "Elementary education of adults", "Reading, remedial teaching", "Spanish language", "Readers", "Horror tales", "Psychological fiction"], "type": {"key": "/type/work"}, "subject_times": ["19th century"], "first_publish_date": "1897", "subject_people": ["H. G. Wells (1866-1946)"], "latest_revision": 63, "revision": 63, "created": {"type": "/type/datetime", "value": "2009-10-15T16:30:47.596577"}, "last_modified": {"type": "/type/datetime", "value": "2023-03-10T13:21:44.920976"}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL705036W.json b/Sources/StubbedDTO/works/OL705036W.json
new file mode 100644
index 0000000..af111f3
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL705036W.json
@@ -0,0 +1 @@
+{"title": "La petite marchande de prose", "covers": [969779], "key": "/works/OL705036W", "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL55888A"}}], "type": {"key": "/type/work"}, "subjects": ["Brothers and sisters, fiction", "Fiction, mystery & detective, general"], "latest_revision": 4, "revision": 4, "created": {"type": "/type/datetime", "value": "2009-12-09T01:56:15.425517"}, "last_modified": {"type": "/type/datetime", "value": "2022-05-25T03:04:40.343020"}}
\ No newline at end of file
diff --git a/Sources/StubbedDTO/works/OL893526W.json b/Sources/StubbedDTO/works/OL893526W.json
new file mode 100644
index 0000000..835d810
--- /dev/null
+++ b/Sources/StubbedDTO/works/OL893526W.json
@@ -0,0 +1 @@
+{"subjects": ["American Science fiction", "Dune (Imaginary place)", "Fiction", "Fiction in English", "Imaginary places", "Science Fiction", "Translations into Russian", "Novela", "Dune (Lugar imaginario)", "Lectures et morceaux choisis", "Anglais (langue)", "Roman ame ricain", "Science-fiction ame ricaine", "Long Now Manual for Civilization", "Roman ame\u0301ricain", "Science-fiction ame\u0301ricaine", "Dune (imaginary place), fiction", "Fiction, science fiction, general"], "key": "/works/OL893526W", "title": "Dune Messiah", "authors": [{"author": {"key": "/authors/OL79034A"}, "type": {"key": "/type/author_role"}}, {"author": {"key": "/authors/OL1846639A"}, "type": {"key": "/type/author_role"}}], "type": {"key": "/type/work"}, "covers": [2421405, 1009421, 5277575, 284503, 8450071, 8771464, 10328275, 11422534, 11290920, 10849793, 979507, 8376882], "description": {"type": "/type/text", "value": "Bearbeitete Neuausgabe"}, "latest_revision": 18, "revision": 18, "created": {"type": "/type/datetime", "value": "2009-12-09T06:52:50.872607"}, "last_modified": {"type": "/type/datetime", "value": "2023-01-31T17:11:49.536060"}}
\ No newline at end of file
diff --git a/Sources/TestFrontEnd/GlobalUsings.cs b/Sources/Tests/GlobalUsings.cs
similarity index 100%
rename from Sources/TestFrontEnd/GlobalUsings.cs
rename to Sources/Tests/GlobalUsings.cs
diff --git a/Sources/TestFrontEnd/TestFrontEnd.csproj b/Sources/Tests/Tests.csproj
similarity index 73%
rename from Sources/TestFrontEnd/TestFrontEnd.csproj
rename to Sources/Tests/Tests.csproj
index 4045434..1af8a17 100644
--- a/Sources/TestFrontEnd/TestFrontEnd.csproj
+++ b/Sources/Tests/Tests.csproj
@@ -10,7 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="CommunityToolkit.Maui" Version="5.3.0" />
+    <PackageReference Include="CommunityToolkit.Maui" Version="6.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
     <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
     <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
@@ -18,6 +18,12 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
+    <PackageReference Include="System.Linq" Version="4.3.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Model\Model.csproj" />
+    <ProjectReference Include="..\Stub\Stub.csproj" />
   </ItemGroup>
 
 </Project>
diff --git a/Sources/Tests/TestsModel/Program.cs b/Sources/Tests/TestsModel/Program.cs
new file mode 100644
index 0000000..c944a5d
--- /dev/null
+++ b/Sources/Tests/TestsModel/Program.cs
@@ -0,0 +1,109 @@
+// See https://aka.ms/new-console-template for more information
+using Model;
+using static System.Console;
+
+WriteLine("Test LibraryStub.GetBookByISBN");
+StubLib.LibraryStub libStub = new StubLib.LibraryStub();
+var book = await libStub.GetBookByISBN("9782330033118");
+WriteLine(book.Title);
+WriteLine(new string('*', WindowWidth));
+WriteLine();
+
+WriteLine("Test Manager.GetBookByISBN");
+Manager manager = new Manager(libStub, new StubLib.UserLibraryStub(libStub));
+var book2 = await manager.GetBookByISBN("9782330033118");
+WriteLine(book2.Title);
+WriteLine(new string('*', WindowWidth));
+WriteLine();
+
+WriteLine("Test Manager.GetBooksByAuthor");
+var booksFromHerbert = await manager.GetBooksByAuthor("herbert", 0, 10);
+foreach (var b in booksFromHerbert.books)
+{
+    WriteLine($"\t{b.Title}");
+}
+WriteLine(new string('*', WindowWidth));
+WriteLine();
+
+WriteLine("Test Manager.GetBooks");
+var books = await manager.GetBooksByTitle("", 0, 100);
+foreach (var b in books.books)
+{
+    WriteLine($"\t{b.Title}");
+}
+WriteLine(new string('*', WindowWidth));
+WriteLine();
+
+WriteLine("Test Manager.AddBook");
+var book1 = await manager.AddBookToCollection("/books/OL25910297M");
+if (book1 == null)
+    book1 = await manager.GetBookByIdFromCollection("/books/OL25910297M");
+book1.Status = Status.Finished;
+book1.UserRating = 5;
+book1.UserNote = "Trop bien !";
+manager.UpdateBook(book1);
+
+manager.AddBookToCollection("/books/OL26210208M");
+manager.AddBookToCollection("/books/OL27258011M");
+var mybooks = await manager.GetBooksFromCollection(0, 100);
+foreach (var b in mybooks.books)
+{
+    WriteLine($"\t{b.Title} {b.UserRating ?? -1}");
+}
+WriteLine(new string('*', WindowWidth));
+WriteLine();
+
+WriteLine("Test Manager.GetContacts");
+var contacts = await manager.GetContacts(0, 100);
+foreach (var c in contacts.contacts)
+{
+    WriteLine($"\t{c.FirstName} {c.LastName}");
+}
+WriteLine(new string('*', WindowWidth));
+WriteLine();
+
+WriteLine("Test Manager.GetCurrentLoans");
+var loans = await manager.GetCurrentLoans(0, 100);
+foreach (var l in loans.loans)
+{
+    WriteLine(
+        $"\t{l.Book.Title} -> {l.Loaner.FirstName} {l.Loaner.LastName} ({l.LoanedAt.ToShortDateString()})"
+    );
+}
+WriteLine(new string('*', WindowWidth));
+WriteLine();
+
+WriteLine("Test Manager.GetPastLoans");
+var loans2 = await manager.GetPastLoans(0, 100);
+foreach (var l in loans2.loans)
+{
+    WriteLine(
+        $"\t{l.Book.Title} -> {l.Loaner.FirstName} {l.Loaner.LastName} ({l.LoanedAt.ToShortDateString()})"
+    );
+}
+WriteLine(new string('*', WindowWidth));
+WriteLine();
+
+WriteLine("Test Manager.GetCurrentBorrowings");
+var borrowings = await manager.GetCurrentBorrowings(0, 100);
+foreach (var b in borrowings.borrowings)
+{
+    WriteLine(
+        $"\t{b.Book.Title} -> {b.Owner.FirstName} {b.Owner.LastName} ({b.BorrowedAt.ToShortDateString()})"
+    );
+}
+WriteLine(new string('*', WindowWidth));
+WriteLine();
+
+WriteLine("Test Manager.GetPastBorrowings");
+var borrowings2 = await manager.GetPastBorrowings(0, 100);
+foreach (var b in borrowings2.borrowings)
+{
+    WriteLine(
+        $"\t{b.Book.Title} -> {b.Owner.FirstName} {b.Owner.LastName} ({b.BorrowedAt.ToShortDateString()})"
+    );
+}
+WriteLine(new string('*', WindowWidth));
+WriteLine();
+
+ReadLine();
diff --git a/Sources/Tests/TestsModel/TestsModel.csproj b/Sources/Tests/TestsModel/TestsModel.csproj
new file mode 100644
index 0000000..d8ee4c0
--- /dev/null
+++ b/Sources/Tests/TestsModel/TestsModel.csproj
@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\Model\Model.csproj" />
+    <ProjectReference Include="..\..\Stub\Stub.csproj" />
+  </ItemGroup>
+</Project>
diff --git a/Sources/TestFrontEnd/UnitTest1.cs b/Sources/Tests/UnitTest1.cs
similarity index 100%
rename from Sources/TestFrontEnd/UnitTest1.cs
rename to Sources/Tests/UnitTest1.cs
diff --git a/Sources/ToolKit/BaseViewModel.cs b/Sources/ToolKit/BaseViewModel.cs
new file mode 100644
index 0000000..d8c71ea
--- /dev/null
+++ b/Sources/ToolKit/BaseViewModel.cs
@@ -0,0 +1,28 @@
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+
+namespace ToolKit
+{
+    public class BaseViewModel : INotifyPropertyChanged
+    {
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = "") =>
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+
+        protected virtual void SetProperty<T>(
+            ref T backingStore,
+            T value,
+            [CallerMemberName] string propertyName = "",
+            Action onChanged = null
+        )
+        {
+            if (EqualityComparer<T>.Default.Equals(backingStore, value))
+                return;
+
+            backingStore = value;
+            onChanged?.Invoke();
+            OnPropertyChanged(propertyName);
+        }
+    }
+}
diff --git a/Sources/ToolKit/CommandPersonnal.cs b/Sources/ToolKit/CommandPersonnal.cs
new file mode 100644
index 0000000..b7cc07f
--- /dev/null
+++ b/Sources/ToolKit/CommandPersonnal.cs
@@ -0,0 +1,40 @@
+using System;
+using System.Windows.Input;
+
+namespace ToolKit
+{
+    public class CommandPersonnal<T> : ICommand
+    {
+        private readonly Action<T> _execute;
+        private readonly Func<T, bool> _canExecute;
+
+        public event EventHandler CanExecuteChanged;
+
+        public CommandPersonnal(Action<T> execute, Func<T, bool> canExecute = null)
+        {
+            _execute = execute;
+            _canExecute = canExecute ?? (_ => true);
+        }
+
+        public bool CanExecute(object parameter)
+        {
+            return _canExecute == null || _canExecute((T)parameter);
+        }
+
+        public void Execute(object parameter)
+        {
+            _execute((T)parameter);
+        }
+
+        public void RefreshCommand() => CanExecuteChanged?.Invoke(this, EventArgs.Empty);
+    }
+
+    public class CommandPersonnal : CommandPersonnal<object>
+    {
+        public CommandPersonnal(Action execute, Func<bool> canExecute = null)
+            : base(
+                new Action<object>(o => execute()),
+                canExecute != null ? new Func<object, bool>(o => canExecute()) : null
+            ) { }
+    }
+}
diff --git a/Sources/ToolKit/ObservableBook.cs b/Sources/ToolKit/ObservableBook.cs
new file mode 100644
index 0000000..471b561
--- /dev/null
+++ b/Sources/ToolKit/ObservableBook.cs
@@ -0,0 +1,238 @@
+using Model;
+using System.Collections.ObjectModel;
+
+namespace ToolKit
+{
+    public class ObservableBook : BaseViewModel
+    {
+        private Book _book;
+        public Book Book
+        {
+            get { return _book; }
+            set
+            {
+                if (_book != value)
+                {
+                    _book = value;
+                    OnPropertyChanged(nameof(Book));
+                }
+            }
+        }
+
+        public ObservableBook(Book book)
+        {
+            _book = book;
+        }
+
+        public string Id
+        {
+            get => _book.Id;
+            set
+            {
+                if (_book.Id != value)
+                {
+                    _book.Id = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public string Title
+        {
+            get => _book.Title;
+            set
+            {
+                if (_book.Title != value)
+                {
+                    _book.Title = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public DateTime PublishDate
+        {
+            get => _book.PublishDate;
+            set
+            {
+                if (_book.PublishDate != value)
+                {
+                    _book.PublishDate = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public List<string> Publishers
+        {
+            get => _book.Publishers;
+            set
+            {
+                if (_book.Publishers != value)
+                {
+                    _book.Publishers = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public string ISBN13
+        {
+            get => _book.ISBN13;
+            set
+            {
+                if (_book.ISBN13 != value)
+                {
+                    _book.ISBN13 = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public List<string> Series
+        {
+            get => _book.Series;
+            set
+            {
+                if (_book.Series != value)
+                {
+                    _book.Series = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public int NbPages
+        {
+            get => _book.NbPages;
+            set
+            {
+                if (_book.NbPages != value)
+                {
+                    _book.NbPages = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public string Format
+        {
+            get => _book.Format;
+            set
+            {
+                if (_book.Format != value)
+                {
+                    _book.Format = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public Languages Language
+        {
+            get => _book.Language;
+            set
+            {
+                if (_book.Language != value)
+                {
+                    _book.Language = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public List<Contributor> Contributors
+        {
+            get => _book.Contributors;
+            set
+            {
+                if (_book.Contributors != value)
+                {
+                    _book.Contributors = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+        public string ImageSmall => _book.ImageSmall;
+        public string ImageMedium => _book.ImageMedium;
+        public string ImageLarge => _book.ImageLarge;
+
+        public List<Work> Works
+        {
+            get => _book.Works;
+            set
+            {
+                if (_book.Works != value)
+                {
+                    _book.Works = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public List<Author> Authors
+        {
+            get => _book.Authors;
+            set
+            {
+                if (_book.Authors != value)
+                {
+                    _book.Authors = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public Status Status
+        {
+            get => _book.Status;
+            set
+            {
+                if (_book.Status != value)
+                {
+                    _book.Status = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public List<string> UserTags
+        {
+            get => _book.UserTags;
+            set
+            {
+                if (_book.UserTags != value)
+                {
+                    _book.UserTags = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public float? UserRating
+        {
+            get => _book.UserRating;
+            set
+            {
+                if (_book.UserRating != value)
+                {
+                    _book.UserRating = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+
+        public string UserNote
+        {
+            get => _book.UserNote;
+            set
+            {
+                if (_book.UserNote != value)
+                {
+                    _book.UserNote = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+    }
+}
diff --git a/Sources/ToolKit/ToolKit.csproj b/Sources/ToolKit/ToolKit.csproj
new file mode 100644
index 0000000..a96dc3f
--- /dev/null
+++ b/Sources/ToolKit/ToolKit.csproj
@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Model\Model.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/Sources/Utils/EnumsMapper.cs b/Sources/Utils/EnumsMapper.cs
new file mode 100644
index 0000000..eb10f99
--- /dev/null
+++ b/Sources/Utils/EnumsMapper.cs
@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Utils
+{
+    public class EnumsMapper<T, U>
+        where T : Enum
+        where U : Enum
+    {
+        readonly HashSet<Tuple<T, U>> mapper = new HashSet<Tuple<T, U>>();
+
+        public T GetModel(U entity)
+        {
+            var result = mapper.Where(tuple => tuple.Item2.Equals(entity));
+            if (result.Count() != 1)
+            {
+                return default(T);
+            }
+            return result.First().Item1;
+        }
+
+        public U GetEntity(T model)
+        {
+            var result = mapper.Where(tuple => tuple.Item1.Equals(model));
+            if (result.Count() != 1)
+            {
+                return default(U);
+            }
+            return result.First().Item2;
+        }
+
+        public void Add(T model, U entity)
+        {
+            mapper.Add(Tuple.Create(model, entity));
+        }
+
+        public void AddRange(params Tuple<T, U>[] tuples)
+        {
+            foreach (var t in tuples)
+            {
+                Add(t.Item1, t.Item2);
+            }
+        }
+
+        public EnumsMapper(params Tuple<T, U>[] tuples)
+        {
+            AddRange(tuples);
+        }
+    }
+}
diff --git a/Sources/Utils/Mapper.cs b/Sources/Utils/Mapper.cs
new file mode 100644
index 0000000..a6fde86
--- /dev/null
+++ b/Sources/Utils/Mapper.cs
@@ -0,0 +1,47 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Utils
+{
+    public class Mapper<T, U>
+        where T : class
+        where U : class
+    {
+        readonly HashSet<Tuple<T, U>> mapper = new HashSet<Tuple<T, U>>();
+
+        public void Reset()
+        {
+            mapper.Clear();
+        }
+
+        public T GetT(U entity)
+        {
+            var result = mapper.Where(tuple => ReferenceEquals(tuple.Item2, entity));
+            if (result.Count() != 1)
+            {
+                return null;
+            }
+            return result.First().Item1;
+        }
+
+        public U GetU(T model)
+        {
+            var result = mapper.Where(tuple => ReferenceEquals(tuple.Item2, model));
+            if (result.Count() != 1)
+            {
+                return null;
+            }
+            return result.First().Item2;
+        }
+
+        public bool AddMapping(T t, U u)
+        {
+            var mapping = new Tuple<T, U>(t, u);
+            if (mapper.Contains(mapping))
+                return false;
+            mapper.Add(mapping);
+            return true;
+        }
+    }
+}
diff --git a/Sources/Utils/Utils.csproj b/Sources/Utils/Utils.csproj
new file mode 100644
index 0000000..c01993f
--- /dev/null
+++ b/Sources/Utils/Utils.csproj
@@ -0,0 +1,7 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>
diff --git a/Sources/VMWrapper/BooksViewModel.cs b/Sources/VMWrapper/BooksViewModel.cs
new file mode 100644
index 0000000..b9c01c2
--- /dev/null
+++ b/Sources/VMWrapper/BooksViewModel.cs
@@ -0,0 +1,107 @@
+using Model;
+using System.Collections.ObjectModel;
+using System.ComponentModel;
+using System.Diagnostics;
+using System.Windows.Input;
+using ToolKit;
+
+namespace VMWrapper
+{
+    public class BooksViewModel : BaseViewModel
+    {
+        private readonly ILibraryManager data;
+        private readonly IUserLibraryManager userLibraryManager;
+
+        private long _totalBooks;
+        public long TotalBooks
+        {
+            get { return _totalBooks; }
+            set
+            {
+                _totalBooks = value;
+                OnPropertyChanged();
+            }
+        }
+
+        private long _totalAuthors;
+        public long TotalAuthors
+        {
+            get { return _totalAuthors; }
+            set
+            {
+                _totalAuthors = value;
+                OnPropertyChanged();
+            }
+        }
+
+        public ObservableCollection<AuteurGroup> AuteurGroups { get; set; }
+
+        private ICommand _removeBookCommand;
+        public ICommand RemoveBookCommand =>
+            _removeBookCommand ??= new CommandPersonnal<string>(
+                async (bookId) => await RemoveBookById(bookId)
+            );
+
+        public BooksViewModel(ILibraryManager data, IUserLibraryManager userLibraryManager)
+        {
+            this.data = data;
+            this.userLibraryManager = userLibraryManager;
+            AuteurGroups = new ObservableCollection<AuteurGroup>();
+            LoadBooksAsync();
+        }
+
+        public async Task LoadBooksAsync()
+        {
+            try
+            {
+                var (totalA, authors) = await data.GetAuthorsByName("", 0, 5);
+                TotalAuthors = totalA;
+
+                foreach (Author author in authors)
+                {
+                    var (totalB, books) = data.GetBooksByAuthor(author.Name, 0, 5).Result;
+                    TotalBooks += totalB;
+
+                    var observableBooks = new ObservableCollection<Book>(books);
+                    AuteurGroups.Add(new AuteurGroup(author.Name, observableBooks));
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine(ex.Message);
+            }
+        }
+
+        public class AuteurGroup : ObservableCollection<Book>
+        {
+            public string Name { get; private set; }
+
+            public AuteurGroup(string name, ObservableCollection<Book> books)
+                : base(books)
+            {
+                Name = name;
+            }
+        }
+
+        public async Task RemoveBookById(string bookId)
+        {
+            await userLibraryManager.RemoveBook(bookId);
+
+            for (int i = AuteurGroups.Count - 1; i >= 0; i--)
+            {
+                var group = AuteurGroups[i];
+                var bookToRemove = group.FirstOrDefault(book => book.Id == bookId);
+                if (bookToRemove != null)
+                {
+                    group.Remove(bookToRemove);
+                    if (group.Count == 0)
+                    {
+                        AuteurGroups.RemoveAt(i);
+                    }
+                    break;
+                }
+            }
+            OnPropertyChanged(nameof(AuteurGroups));
+        }
+    }
+}
diff --git a/Sources/VMWrapper/DetailBookViewModel.cs b/Sources/VMWrapper/DetailBookViewModel.cs
new file mode 100644
index 0000000..97bbccf
--- /dev/null
+++ b/Sources/VMWrapper/DetailBookViewModel.cs
@@ -0,0 +1,42 @@
+using Model;
+using System.Diagnostics;
+using ToolKit;
+
+namespace VMWrapper
+{
+    public class DetailBookViewModel : BaseViewModel
+    {
+        private readonly ILibraryManager data;
+
+        private readonly IUserLibraryManager userLibraryManager;
+
+        public Book BookDetail { get; private set; } = new Book();
+
+        public DetailBookViewModel(ILibraryManager data, IUserLibraryManager userLibraryManager)
+        {
+            this.data = data;
+            this.userLibraryManager = userLibraryManager;
+        }
+
+        public async void UpdateColleciton()
+        {
+            await userLibraryManager.UpdateBook(BookDetail);
+        }
+
+        public async Task LoadBookDetail(string idBook)
+        {
+            try
+            {
+                if (idBook != "")
+                {
+                    BookDetail = await data.GetBookById(idBook);
+                    OnPropertyChanged(nameof(BookDetail));
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine(ex.Message);
+            }
+        }
+    }
+}
diff --git a/Sources/VMWrapper/FilterViewModel.cs b/Sources/VMWrapper/FilterViewModel.cs
new file mode 100644
index 0000000..121569c
--- /dev/null
+++ b/Sources/VMWrapper/FilterViewModel.cs
@@ -0,0 +1,174 @@
+using Model;
+using System.Collections.ObjectModel;
+using System.Diagnostics;
+using System.Windows.Input;
+using ToolKit;
+
+namespace VMWrapper
+{
+    public class FilterViewModel : BaseViewModel
+    {
+        private readonly ILibraryManager data;
+
+        public ObservableCollection<Author> AuthorList { get; private set; } =
+            new ObservableCollection<Author>();
+        public ObservableCollection<Book> BookList { get; private set; } =
+            new ObservableCollection<Book>();
+
+        private long _totalBooks;
+        public long TotalBooks
+        {
+            get { return _totalBooks; }
+            set
+            {
+                _totalBooks = value;
+                OnPropertyChanged();
+            }
+        }
+
+        private string _searchQuery;
+        public string SearchQuery
+        {
+            get => _searchQuery;
+            set
+            {
+                if (_searchQuery != value)
+                {
+                    _searchQuery = value;
+                    OnPropertyChanged(nameof(SearchQuery));
+                    _ = SearchAuthors(SearchQuery);
+                }
+            }
+        }
+
+        private ICommand _searchCommand;
+        public ICommand SearchCommand =>
+            _searchCommand ??= new CommandPersonnal<string>(
+                async (query) => await SearchAuthors(query)
+            );
+
+        private ICommand _sortCommand;
+        public ICommand SortCommand =>
+            _sortCommand ??= new CommandPersonnal<string>(
+                async (sortOrder) => await SortingByName(sortOrder)
+            );
+
+        public FilterViewModel(ILibraryManager data)
+        {
+            this.data = data;
+            _ = GetAuthorsAsync();
+        }
+
+        private async Task GetDatePublish()
+        {
+            try
+            {
+                var result = await data.GetBooksByAuthor("", 0, 5);
+                var books = result.Item2;
+
+                BookList.Clear();
+                foreach (Book book in books)
+                {
+                    BookList.Add(book);
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine(ex.Message);
+            }
+        }
+
+        public async Task GetAuthorsAsync()
+        {
+            try
+            {
+                var result = await data.GetAuthorsByName("", 0, 10);
+                var authors = result.Item2;
+
+                AuthorList.Clear();
+                foreach (var author in authors)
+                {
+                    AuthorList.Add(author);
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine(ex.Message);
+            }
+        }
+
+        public async Task SortingByName(string sortOrder)
+        {
+            try
+            {
+                string sortParam = sortOrder switch
+                {
+                    "name" => "name",
+                    "name_reverse" => "name_reverse",
+                    _ => "name"
+                };
+                Debug.WriteLine($"riri", sortOrder);
+                if (SearchQuery != null)
+                {
+                    var (total, authors) = await data.GetAuthorsByName(
+                        _searchQuery,
+                        0,
+                        10,
+                        sortParam
+                    );
+                    AuthorList.Clear();
+                    foreach (var author in authors)
+                    {
+                        AuthorList.Add(author);
+                    }
+                }
+                else
+                {
+                    var (total, authors) = await data.GetAuthorsByName("", 0, 10, sortParam);
+                    AuthorList.Clear();
+                    foreach (var author in authors)
+                    {
+                        AuthorList.Add(author);
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine(ex.Message);
+            }
+        }
+
+        private async Task SearchAuthors(string query)
+        {
+            try
+            {
+                if (!string.IsNullOrWhiteSpace(query))
+                {
+                    TotalBooks = 0;
+
+                    var (total, authors) = await data.GetAuthorsByName(query, 0, 10);
+
+                    AuthorList.Clear();
+                    foreach (Author author in authors)
+                    {
+                        var (totalB, books) = data.GetBooksByAuthor(author.Name, 0, 10).Result;
+                        TotalBooks += totalB;
+                    }
+
+                    foreach (var author in authors)
+                    {
+                        AuthorList.Add(author);
+                    }
+                }
+                else
+                {
+                    _ = GetAuthorsAsync();
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine(ex.Message);
+            }
+        }
+    }
+}
diff --git a/Sources/VMWrapper/VMWrapper.csproj b/Sources/VMWrapper/VMWrapper.csproj
new file mode 100644
index 0000000..dba2690
--- /dev/null
+++ b/Sources/VMWrapper/VMWrapper.csproj
@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+	<PropertyGroup>
+		<TargetFramework>net7.0</TargetFramework>
+		<ImplicitUsings>enable</ImplicitUsings>
+		<Nullable>enable</Nullable>
+	</PropertyGroup>
+
+	<ItemGroup>
+	  <PackageReference Include="System.Linq" Version="4.3.0" />
+	</ItemGroup>
+
+	<ItemGroup>
+	  <ProjectReference Include="..\Model\Model.csproj" />
+	  <ProjectReference Include="..\ToolKit\ToolKit.csproj" />
+	</ItemGroup>
+
+</Project>
diff --git a/screens/emprunts.png b/screens/emprunts.png
new file mode 100644
index 0000000..843a86a
Binary files /dev/null and b/screens/emprunts.png differ
diff --git a/symbols/Monochrome=folder.fill.svg b/symbols/Monochrome=folder.fill.svg
new file mode 100644
index 0000000..5728b07
--- /dev/null
+++ b/symbols/Monochrome=folder.fill.svg
@@ -0,0 +1,10 @@
+<svg width="28" height="28" viewBox="0 0 28 28" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0_2124_88346)">
+<path d="M1 20.8125C1 23.2383 2.23047 24.4453 4.67969 24.4453H24.2852C26.3828 24.4453 27.6133 23.2266 27.6133 20.8125V11.2031H1V20.8125ZM1 9.66797H27.6133V8.77734C27.6133 6.36328 26.3711 5.14453 23.9336 5.14453H12.6836C11.8867 5.14453 11.4062 4.95703 10.8203 4.45312L10.1055 3.86719C9.33203 3.21094 8.73438 3 7.57422 3H4.23438C2.18359 3 1 4.17188 1 6.52734V9.66797Z" fill="black" fill-opacity="0.85"/>
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+<defs>
+<clipPath id="clip0_2124_88346">
+<rect width="26.6133" height="21.5977" fill="white" transform="translate(1 3)"/>
+</clipPath>
+</defs>
+</svg>
diff --git a/symbols/Monochrome=folder.svg b/symbols/Monochrome=folder.svg
new file mode 100644
index 0000000..57c3d84
--- /dev/null
+++ b/symbols/Monochrome=folder.svg
@@ -0,0 +1,10 @@
+<svg width="28" height="28" viewBox="0 0 28 28" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0_2124_88345)">
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+</g>
+<defs>
+<clipPath id="clip0_2124_88345">
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+</defs>
+</svg>