Implement sorting functionality for prospects with a dialog and custom sort options

FoodsharingSiegen.Server/Pages/Prospects.razor

@@ -25,17 +25,35 @@
 ><i class="fa-solid fa-plus"></i>
 </Button>
 
+<Button
+    Color="Color.Primary"
+    Width="Width.Px(50)"
+    Height="Height.Px(50)"
+    title="Sortieren"
+    style="min-width: auto;"
+    Clicked="@OpenSortDialogAsync"
+><i class="fa-solid fa-sort"></i>
+</Button>
+
+<div class="badge-row mt-2">
+    @if (HasCustomSort)
+    {
+        <Badge Color="Color.Primary" Closable="true" CloseClicked="@EventCallback.Factory.Create(this, ResetSortAsync)">@CurrentSortText</Badge>
+    }
+</div>
+
 
 
 @{
     var filterList = ProspectList.ApplyFilter(Filter);
+    var sortList = SortProspects(filterList);
 }
 
 <hr/>
 <ProspectFilterControl Filter="Filter" FilterChanged="FilterChangedAsync" StateFilter="ProspectStateFilter.OnBoarding"></ProspectFilterControl>
 <hr />
 <ProspectGrid
-    Prospects="filterList"
+    Prospects="sortList"
     OnDataChanged="@LoadProspects"
     StateFilter="ProspectStateFilter.OnBoarding">
 </ProspectGrid>

FoodsharingSiegen.Server/Pages/Prospects.razor.cs

@@ -36,6 +36,8 @@ namespace FoodsharingSiegen.Server.Pages
         /// </summary>
         private List<Prospect>? ProspectList { get; set; }
 
+        private ProspectSortOption CurrentSort { get; set; } = ProspectSortOption.NameAscending;
+
         #endregion
 
         #region Override InitializeDataAsync
@@ -63,6 +65,32 @@ namespace FoodsharingSiegen.Server.Pages
             await EditProspectDialog.ShowAsync(ModalService, LoadProspects);
         }
 
+        private async Task OpenSortDialogAsync()
+        {
+            await ProspectSortDialog.ShowAsync(ModalService, CurrentSort, async option =>
+            {
+                CurrentSort = option;
+
+                await InvokeAsync(StateHasChanged);
+            });
+        }
+
+        private bool HasCustomSort => CurrentSort != ProspectSortOption.NameAscending;
+
+        private string CurrentSortText => CurrentSort switch
+        {
+            ProspectSortOption.NameDescending => "Sortierung: Name (absteigend)",
+            ProspectSortOption.ModifiedAscending => "Sortierung: Zuletzt geaendert (aufsteigend) ",
+            ProspectSortOption.ModifiedDescending => "Sortierung: Zuletzt geaendert (absteigend) ",
+            _ => string.Empty
+        };
+
+        private async Task ResetSortAsync()
+        {
+            CurrentSort = ProspectSortOption.NameAscending;
+            await InvokeAsync(StateHasChanged);
+        }
+
         #endregion
 
         #region Private Method FilterChangedAsync
@@ -78,6 +106,18 @@ namespace FoodsharingSiegen.Server.Pages
             await LocalStorageService.SetItem(StorageKeys.ProspectFilter, Filter);
         }
 
+        private List<Prospect> SortProspects(List<Prospect> prospects)
+        {
+            return CurrentSort switch
+            {
+                ProspectSortOption.NameAscending => prospects.OrderBy(x => x.Name, StringComparer.OrdinalIgnoreCase).ToList(),
+                ProspectSortOption.NameDescending => prospects.OrderByDescending(x => x.Name, StringComparer.OrdinalIgnoreCase).ToList(),
+                ProspectSortOption.ModifiedAscending => prospects.OrderBy(x => x.Modified ?? x.Created).ToList(),
+                ProspectSortOption.ModifiedDescending => prospects.OrderByDescending(x => x.Modified ?? x.Created).ToList(),
+                _ => prospects
+            };
+        }
+
         #endregion
 
         #region Private Method LoadProspects