Add(Back-End): Filtrage up pour les auteurs

Sources/BookApp/Pages/Filtrage.xaml

@@ -45,6 +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>

Sources/VMWrapper/FilterViewModel.cs

@@ -1,18 +1,12 @@
 using Model;
-using System;
-using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Diagnostics;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using System.Windows.Input;
 using ToolKit;
-using static System.Runtime.InteropServices.JavaScript.JSType;
 
 namespace VMWrapper
 {
-    public class FilterViewModel: BaseViewModel
+    public class FilterViewModel : BaseViewModel
     {
         private readonly ILibraryManager data;
 
@@ -21,7 +15,6 @@ namespace VMWrapper
         public ObservableCollection<Book> BookList { get; private set; } =
             new ObservableCollection<Book>();
 
-
         private long _totalBooks;
         public long TotalBooks
         {
@@ -46,7 +39,6 @@ namespace VMWrapper
                     _ = SearchAuthors(SearchQuery);
                 }
             }
-
         }
 
         private ICommand _searchCommand;
@@ -55,6 +47,12 @@ namespace VMWrapper
                 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;
@@ -99,6 +97,46 @@ namespace VMWrapper
             }
         }
 
+        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)
         {
@@ -107,7 +145,7 @@ namespace VMWrapper
                 if (!string.IsNullOrWhiteSpace(query))
                 {
                     TotalBooks = 0;
-                   
+
                     var (total, authors) = await data.GetAuthorsByName(query, 0, 10);
 
                     AuthorList.Clear();
@@ -115,7 +153,6 @@ namespace VMWrapper
                     {
                         var (totalB, books) = data.GetBooksByAuthor(author.Name, 0, 10).Result;
                         TotalBooks += totalB;
-
                     }
 
                     foreach (var author in authors)