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">
+  <diagram id="C5RBs43oDa-KdzZeNtuy" name="Page-1">
+    <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">
+      <root>
+        <mxCell id="WIyWlLk6GJQsqaUBKTNV-0" />
+        <mxCell id="WIyWlLk6GJQsqaUBKTNV-1" parent="WIyWlLk6GJQsqaUBKTNV-0" />
+        <mxCell id="zkfFHV4jXpPFQw0GAbJ--0" value="Author" 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;" parent="WIyWlLk6GJQsqaUBKTNV-1" vertex="1">
+          <mxGeometry x="-880" y="-100" width="270" height="290" as="geometry">
+            <mxRectangle x="230" y="140" width="160" height="26" as="alternateBounds" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="zkfFHV4jXpPFQw0GAbJ--1" 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;" parent="zkfFHV4jXpPFQw0GAbJ--0" vertex="1">
+          <mxGeometry y="26" width="270" height="26" as="geometry" />
+        </mxCell>
+        <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" />
+        </mxCell>
+        <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">
+          <mxGeometry y="78" width="270" height="26" as="geometry" />
+        </mxCell>
+        <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/Sources/BookApp.sln b/Sources/BookApp.sln
index e659e19..a312494 100644
--- a/Sources/BookApp.sln
+++ b/Sources/BookApp.sln
@@ -19,6 +19,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Utils", "Utils\Utils.csproj
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Stub", "Stub\Stub.csproj", "{14ED7ADF-7B83-432E-A87B-40C153041067}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TestFrontEnd", "Tests\TestFrontEnd.csproj", "{945A6DB3-CB0A-4FB8-8117-64F0CB0D838A}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "VMWrapper", "VMWrapper\VMWrapper.csproj", "{377DC5AB-5D7C-4A29-ACED-C08B581A8E58}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -59,6 +63,14 @@ Global
 		{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
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/Sources/BookApp/BookApp.csproj b/Sources/BookApp/BookApp.csproj
index 9fa3b51..088bf6f 100644
--- a/Sources/BookApp/BookApp.csproj
+++ b/Sources/BookApp/BookApp.csproj
@@ -70,6 +70,13 @@
 		<PackageReference Include="CommunityToolkit.Maui" Version="5.3.0" />
 		<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="..\VMWrapper\VMWrapper.csproj" />
 	</ItemGroup>
 
 	<ItemGroup>
diff --git a/Sources/BookApp/Composants/CollectionFiltrage.xaml b/Sources/BookApp/Composants/CollectionFiltrage.xaml
index 0488b1a..9c62a76 100644
--- a/Sources/BookApp/Composants/CollectionFiltrage.xaml
+++ b/Sources/BookApp/Composants/CollectionFiltrage.xaml
@@ -2,10 +2,13 @@
 <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:DataType="vm:TousViewModel"
              x:Class="BookApp.Composants.CollectionFiltrage">
-    <CollectionView ItemsSource="{Binding MyCollections1}">
+    <CollectionView ItemsSource="{Binding Authors}">
         <CollectionView.ItemTemplate>
-            <DataTemplate>
+            <DataTemplate x:DataType="model:Author">
                 <StackLayout Padding="5">
                     <Grid RowDefinitions="auto" Margin="5,0,0,0">
                         <Grid.ColumnDefinitions>
@@ -19,8 +22,8 @@
                                 <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 NbLivre}"/> -->
                         <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..90d1008 100644
--- a/Sources/BookApp/Composants/CollectionFiltrage.xaml.cs
+++ b/Sources/BookApp/Composants/CollectionFiltrage.xaml.cs
@@ -1,10 +1,11 @@
+using BookApp.ViewModel;
 using System.Collections.ObjectModel;
 
 namespace BookApp.Composants;
 
 public partial class CollectionFiltrage : ContentView
 {
-    public class ObjetTemp
+   /* public class ObjetTemp
     {
         public string AuteurName { get; set; }
         public int NbLivre { get; set; }
@@ -16,12 +17,13 @@ public partial class CollectionFiltrage : ContentView
         }
     }
 
-    public ObservableCollection<ObjetTemp> MyCollections1 { get; set; }
+    public ObservableCollection<ObjetTemp> MyCollections1 { get; set; }*/
 
-    public CollectionFiltrage()
+    public CollectionFiltrage(TousViewModel data)
     {
         InitializeComponent();
-        MyCollections1 = new ObservableCollection<ObjetTemp>()
+        
+        /*MyCollections1 = new ObservableCollection<ObjetTemp>()
         {
             new ObjetTemp("Victor Hugo", 10),
             new ObjetTemp("Jane Austen", 3),
@@ -38,7 +40,7 @@ public partial class CollectionFiltrage : ContentView
             new ObjetTemp("William Shakespeare", 9),
             new ObjetTemp("Charles Dickensn", 9),
             new ObjetTemp("Isaac Asimov", 9),
-        };
-        BindingContext = this;
+        };*/
+        BindingContext = data;
     }
 }
diff --git a/Sources/BookApp/Composants/GroupCollection.xaml.cs b/Sources/BookApp/Composants/GroupCollection.xaml.cs
index 271bd67..294a032 100644
--- a/Sources/BookApp/Composants/GroupCollection.xaml.cs
+++ b/Sources/BookApp/Composants/GroupCollection.xaml.cs
@@ -1,4 +1,3 @@
-using BookApp.Model;
 using BookApp.Pages;
 using BookApp.ViewModel;
 
@@ -13,10 +12,10 @@ namespace BookApp.Composants
 
         private async void OnSelectionChanged(object sender, SelectionChangedEventArgs e)
         {
-            if (e.CurrentSelection.FirstOrDefault() is Book selectedItem)
+            /*if (e.CurrentSelection.FirstOrDefault() is Book selectedItem)
             {
                 await Navigation.PushAsync(new DetailBook(selectedItem));
-            }
+            }*/
         }
     }
 }
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/MauiProgram.cs b/Sources/BookApp/MauiProgram.cs
index 328f4bd..d31faa2 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 +28,13 @@ namespace BookApp
 #if DEBUG
             builder.Logging.AddDebug();
 #endif
+            builder.Services.AddSingleton<ILibraryManager, LibraryStub>();
+            builder.Services.AddSingleton<BookViewModel>();
+            builder.Services.AddSingleton<TousViewModel>();
+            builder.Services.AddSingleton<Filtrage>();
+            builder.Services.AddSingleton<CollectionFiltrage>();
+
+            // transient pour recharger la data à l'execute
 
             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..94f3a1e 100644
--- a/Sources/BookApp/Pages/DetailBook.xaml
+++ b/Sources/BookApp/Pages/DetailBook.xaml
@@ -18,7 +18,7 @@
                 Source="Chevron_left.svg" 
                 HorizontalOptions="Start">
                     <Image.GestureRecognizers>
-                        <TapGestureRecognizer Tapped="BackButton" NumberOfTapsRequired="1"/>
+                       <!-- <TapGestureRecognizer Tapped="BackButton" NumberOfTapsRequired="1"/> -->
                     </Image.GestureRecognizers>
                     <Image.Behaviors>
                         <toolkit:IconTintColorBehavior TintColor="Red" />
diff --git a/Sources/BookApp/Pages/DetailBook.xaml.cs b/Sources/BookApp/Pages/DetailBook.xaml.cs
index c11094d..6e3cbdc 100644
--- a/Sources/BookApp/Pages/DetailBook.xaml.cs
+++ b/Sources/BookApp/Pages/DetailBook.xaml.cs
@@ -1,20 +1,19 @@
-using BookApp.Model;
 using System.Collections.ObjectModel;
 
 namespace BookApp.Pages;
 
 public partial class DetailBook : ContentPage
 {
-    private int maxStars = 5;
+    /*private int maxStars = 5;
     private int currentRating = 0;
 
     public Book BookDetail { get; set; }
-
-    public DetailBook(Book ItemBook)
+    */
+    public DetailBook()//Book ItemBook)
     {
         InitializeComponent();
 
-        for (int i = 1; i <= maxStars; i++)
+      /*  for (int i = 1; i <= maxStars; i++)
         {
             var star = new Image
             {
@@ -33,9 +32,9 @@ public partial class DetailBook : ContentPage
 
         UpdateStars();
         BookDetail = ItemBook;
-        BindingContext = this;
+        BindingContext = this;*/
     }
-
+    /*
     private void StarTapped(int rating)
     {
         if (rating > maxStars)
@@ -64,5 +63,5 @@ public partial class DetailBook : ContentPage
     async void BackButton(object sender, EventArgs args)
     {
         await Shell.Current.Navigation.PopAsync();
-    }
+    }*/
 }
diff --git a/Sources/BookApp/Pages/Tous.xaml.cs b/Sources/BookApp/Pages/Tous.xaml.cs
index 260467d..d461ffd 100644
--- a/Sources/BookApp/Pages/Tous.xaml.cs
+++ b/Sources/BookApp/Pages/Tous.xaml.cs
@@ -7,7 +7,7 @@ namespace BookApp.Pages
         public Tous()
         {
             InitializeComponent();
-            BindingContext = new TousViewModel();
+            //BindingContext = new TousViewModel();
         }
 
         async void BackButton(object sender, EventArgs args)
diff --git a/Sources/BookApp/ViewModel/TousViewModel.cs b/Sources/BookApp/ViewModel/TousViewModel.cs
index a5e9a68..e0648bd 100644
--- a/Sources/BookApp/ViewModel/TousViewModel.cs
+++ b/Sources/BookApp/ViewModel/TousViewModel.cs
@@ -1,32 +1,53 @@
-using BookApp.Data;
-using BookApp.Model;
+using Model;
 using System.Collections.ObjectModel;
+using VMWrapper;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace BookApp.ViewModel;
 
-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 class TousViewModel
+{
+        
+    BookViewModel _viewModel;
+    public ObservableCollection<Author> Authors { get; set; } = new ObservableCollection<Author>();
+
+    /* public ObservableCollection<AuteurGroup> AuteurGroups { get; private set; } =
+         new ObservableCollection<AuteurGroup>();*/
+
+    public TousViewModel(BookViewModel viewModel)
+    {
+       
+        _viewModel = viewModel;
+        GetAuthors();
+        /* ObservableCollection<Auteur> auteurs = new Stub().CreateStubData();
+         foreach (Auteur auteur in auteurs)
+         {
+             AuteurGroups.Add(new AuteurGroup(auteur.Name, auteur.Books));
+         }*/
+    }
 
-        public TousViewModel()
-        {
-            ObservableCollection<Auteur> auteurs = new Stub().CreateStubData();
-            foreach (Auteur auteur in auteurs)
-            {
-                AuteurGroups.Add(new AuteurGroup(auteur.Name, auteur.Books));
-            }
+    //fireandforget
+    public async void GetAuthors()
+    {
+        
+        var authors1 = await _viewModel.GetAuthor();
+        Authors.Clear();
+        foreach (var author in authors1)
+        {
+            Authors.Add(author);
         }
     }
-}
+}
+
+/*public class AuteurGroup : ObservableCollection<Book>
+{
+    public string Name { get; private set; }
+
+    public AuteurGroup(string name, ObservableCollection<Book> books)
+        : base(books)
+    {
+        Name = name;
+    }
+}*/
\ No newline at end of file
diff --git a/Sources/DtoAbstractLayer/DtoAbstractLayer.csproj b/Sources/DtoAbstractLayer/DtoAbstractLayer.csproj
index 496da7a..a723582 100644
--- a/Sources/DtoAbstractLayer/DtoAbstractLayer.csproj
+++ b/Sources/DtoAbstractLayer/DtoAbstractLayer.csproj
@@ -6,6 +6,10 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="System.Linq" Version="4.3.0" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\LibraryDTO\LibraryDTO.csproj" />
   </ItemGroup>
diff --git a/Sources/JsonReader/JsonReader.csproj b/Sources/JsonReader/JsonReader.csproj
index 8e77096..0af9115 100644
--- a/Sources/JsonReader/JsonReader.csproj
+++ b/Sources/JsonReader/JsonReader.csproj
@@ -8,6 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+    <PackageReference Include="System.Linq" Version="4.3.0" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\LibraryDTO\LibraryDTO.csproj" />
diff --git a/Sources/LibraryDTO/LibraryDTO.csproj b/Sources/LibraryDTO/LibraryDTO.csproj
index ef76c53..6b0a0aa 100644
--- a/Sources/LibraryDTO/LibraryDTO.csproj
+++ b/Sources/LibraryDTO/LibraryDTO.csproj
@@ -15,4 +15,7 @@
     <WarningLevel>4</WarningLevel>
     <DocumentationFile>bin\Release\net7.0\LibraryDTO.xml</DocumentationFile>
   </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="System.Linq" Version="4.3.0" />
+  </ItemGroup>
 </Project>
diff --git a/Sources/Model/Model.csproj b/Sources/Model/Model.csproj
index 4658cbf..e23a0f7 100644
--- a/Sources/Model/Model.csproj
+++ b/Sources/Model/Model.csproj
@@ -6,4 +6,8 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="System.Linq" Version="4.3.0" />
+  </ItemGroup>
+
 </Project>
diff --git a/Sources/Stub/Stub.cs b/Sources/Stub/LibraryStub.cs
similarity index 100%
rename from Sources/Stub/Stub.cs
rename to Sources/Stub/LibraryStub.cs
diff --git a/Sources/Stub/Stub.csproj b/Sources/Stub/Stub.csproj
index f70ca4b..2dfc70b 100644
--- a/Sources/Stub/Stub.csproj
+++ b/Sources/Stub/Stub.csproj
@@ -6,6 +6,10 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="System.Linq" Version="4.3.0" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\Model\Model.csproj" />
     <ProjectReference Include="..\StubbedDTO\StubbedDTO.csproj" />
diff --git a/Sources/StubbedDTO/StubbedDTO.csproj b/Sources/StubbedDTO/StubbedDTO.csproj
index 70ef770..57293c7 100644
--- a/Sources/StubbedDTO/StubbedDTO.csproj
+++ b/Sources/StubbedDTO/StubbedDTO.csproj
@@ -24,6 +24,9 @@
       <CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
     </None>
   </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="System.Linq" Version="4.3.0" />
+  </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\DtoAbstractLayer\DtoAbstractLayer.csproj" />
     <ProjectReference Include="..\JsonReader\JsonReader.csproj" />
diff --git a/Sources/Tests/TestFrontEnd.csproj b/Sources/Tests/TestFrontEnd.csproj
index 4045434..585e254 100644
--- a/Sources/Tests/TestFrontEnd.csproj
+++ b/Sources/Tests/TestFrontEnd.csproj
@@ -18,6 +18,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
+    <PackageReference Include="System.Linq" Version="4.3.0" />
   </ItemGroup>
 
 </Project>
diff --git a/Sources/Utils/Utils.csproj b/Sources/Utils/Utils.csproj
index c01993f..93a85ec 100644
--- a/Sources/Utils/Utils.csproj
+++ b/Sources/Utils/Utils.csproj
@@ -4,4 +4,8 @@
     <TargetFramework>net7.0</TargetFramework>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="System.Linq" Version="4.3.0" />
+  </ItemGroup>
+
 </Project>
diff --git a/Sources/VMWrapper/BookViewModel.cs b/Sources/VMWrapper/BookViewModel.cs
new file mode 100644
index 0000000..1806598
--- /dev/null
+++ b/Sources/VMWrapper/BookViewModel.cs
@@ -0,0 +1,32 @@
+using Model;
+using System;
+using System.Collections.ObjectModel;
+using System.Xml.Linq;
+
+namespace VMWrapper
+{
+    // All the code in this file is included in all platforms.
+    public class BookViewModel
+    {
+        ILibraryManager data;
+
+        ObservableCollection<Author> authorList;
+
+        public BookViewModel(ILibraryManager data)
+        {
+            this.data = data;
+        }
+
+        public async Task<ObservableCollection<Author>> GetAuthor()
+        {
+            var objet =  await data.GetAuthorsByName("",0,10);
+            var ojb = objet.Item2;
+         
+            return new ObservableCollection<Author>(ojb);
+            
+
+        }
+
+   
+    }
+}
\ No newline at end of file
diff --git a/Sources/VMWrapper/Platforms/Android/PlatformClass1.cs b/Sources/VMWrapper/Platforms/Android/PlatformClass1.cs
new file mode 100644
index 0000000..0d87dd3
--- /dev/null
+++ b/Sources/VMWrapper/Platforms/Android/PlatformClass1.cs
@@ -0,0 +1,7 @@
+namespace VMWrapper
+{
+    // All the code in this file is only included on Android.
+    public class PlatformClass1
+    {
+    }
+}
\ No newline at end of file
diff --git a/Sources/VMWrapper/Platforms/MacCatalyst/PlatformClass1.cs b/Sources/VMWrapper/Platforms/MacCatalyst/PlatformClass1.cs
new file mode 100644
index 0000000..92343e9
--- /dev/null
+++ b/Sources/VMWrapper/Platforms/MacCatalyst/PlatformClass1.cs
@@ -0,0 +1,7 @@
+namespace VMWrapper
+{
+    // All the code in this file is only included on Mac Catalyst.
+    public class PlatformClass1
+    {
+    }
+}
\ No newline at end of file
diff --git a/Sources/VMWrapper/Platforms/Tizen/PlatformClass1.cs b/Sources/VMWrapper/Platforms/Tizen/PlatformClass1.cs
new file mode 100644
index 0000000..8fdd0bd
--- /dev/null
+++ b/Sources/VMWrapper/Platforms/Tizen/PlatformClass1.cs
@@ -0,0 +1,9 @@
+using System;
+
+namespace VMWrapper
+{
+    // All the code in this file is only included on Tizen.
+    public class PlatformClass1
+    {
+    }
+}
\ No newline at end of file
diff --git a/Sources/VMWrapper/Platforms/Windows/PlatformClass1.cs b/Sources/VMWrapper/Platforms/Windows/PlatformClass1.cs
new file mode 100644
index 0000000..b456b51
--- /dev/null
+++ b/Sources/VMWrapper/Platforms/Windows/PlatformClass1.cs
@@ -0,0 +1,7 @@
+namespace VMWrapper
+{
+    // All the code in this file is only included on Windows.
+    public class PlatformClass1
+    {
+    }
+}
\ No newline at end of file
diff --git a/Sources/VMWrapper/Platforms/iOS/PlatformClass1.cs b/Sources/VMWrapper/Platforms/iOS/PlatformClass1.cs
new file mode 100644
index 0000000..f961f85
--- /dev/null
+++ b/Sources/VMWrapper/Platforms/iOS/PlatformClass1.cs
@@ -0,0 +1,7 @@
+namespace VMWrapper
+{
+    // All the code in this file is only included on iOS.
+    public class PlatformClass1
+    {
+    }
+}
\ No newline at end of file
diff --git a/Sources/VMWrapper/VMWrapper.csproj b/Sources/VMWrapper/VMWrapper.csproj
new file mode 100644
index 0000000..b068d6c
--- /dev/null
+++ b/Sources/VMWrapper/VMWrapper.csproj
@@ -0,0 +1,28 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+	<PropertyGroup>
+		<TargetFrameworks>net7.0;net7.0-android;net7.0-ios;net7.0-maccatalyst</TargetFrameworks>
+		<TargetFrameworks Condition="$([MSBuild]::IsOSPlatform('windows'))">$(TargetFrameworks);net7.0-windows10.0.19041.0</TargetFrameworks>
+		<!-- Uncomment to also build the tizen app. You will need to install tizen by following this: https://github.com/Samsung/Tizen.NET -->
+		<!-- <TargetFrameworks>$(TargetFrameworks);net7.0-tizen</TargetFrameworks> -->
+		<UseMaui>true</UseMaui>
+		<SingleProject>true</SingleProject>
+		<ImplicitUsings>enable</ImplicitUsings>
+
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'ios'">14.2</SupportedOSPlatformVersion>
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'maccatalyst'">14.0</SupportedOSPlatformVersion>
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'android'">21.0</SupportedOSPlatformVersion>
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'">10.0.17763.0</SupportedOSPlatformVersion>
+		<TargetPlatformMinVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'">10.0.17763.0</TargetPlatformMinVersion>
+		<SupportedOSPlatformVersion Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'tizen'">6.5</SupportedOSPlatformVersion>
+	</PropertyGroup>
+
+	<ItemGroup>
+	  <PackageReference Include="System.Linq" Version="4.3.0" />
+	</ItemGroup>
+
+	<ItemGroup>
+	  <ProjectReference Include="..\Model\Model.csproj" />
+	</ItemGroup>
+
+</Project>