Add delete button for versions page.

Aaru.Server/Components/Admin/Pages/Versions/View.razor

@@ -2,6 +2,7 @@
 @using Version = Aaru.Server.Database.Models.Version
 @attribute [Authorize]
 @layout AdminLayout
+@rendermode InteractiveServer
 
 @inject Microsoft.EntityFrameworkCore.IDbContextFactory<DbContext> DbContextFactory
 
@@ -26,6 +27,9 @@
             <th class="fw-bold bg-secondary text-light">
                 @DisplayNameHelper.GetDisplayName(typeof(Version), nameof(Version.Count))
             </th>
+            <th class="fw-bold bg-secondary text-light">
+                Actions
+            </th>
         </tr>
         </thead>
         <tbody>
@@ -38,8 +42,23 @@
                 <td>
                     @item.Count
                 </td>
+                <td>
+                    <button class="btn btn-danger btn-sm" @onclick="async () => await ShowDeleteModal(item.Id)">
+                        <i class="bi bi-trash"></i> Delete
+                    </button>
+                </td>
             </tr>
         }
         </tbody>
     </table>
-</section>
+</section>
+
+<BlazorBootstrap.Modal @ref="_deleteModal" Title="Delete Version" Size="ModalSize.Small">
+    <BodyTemplate>
+        <div class="text-danger">Are you sure you want to delete this version?</div>
+    </BodyTemplate>
+    <FooterTemplate>
+        <button class="btn btn-secondary" @onclick="HideDeleteModal">Cancel</button>
+        <button class="btn btn-danger" @onclick="ConfirmDelete">Delete</button>
+    </FooterTemplate>
+</BlazorBootstrap.Modal>

Aaru.Server/Components/Admin/Pages/Versions/View.razor.cs

@@ -1,3 +1,4 @@
+using BlazorBootstrap;
 using Microsoft.EntityFrameworkCore;
 using DbContext = Aaru.Server.Database.DbContext;
 using Version = Aaru.Server.Database.Models.Version;
@@ -6,8 +7,10 @@ namespace Aaru.Server.Components.Admin.Pages.Versions;
 
 public partial class View
 {
-    bool          _initialized;
-    List<Version> _items;
+    private int    _deleteId;
+    private Modal? _deleteModal;
+    bool           _initialized;
+    List<Version>  _items;
 
     /// <inheritdoc />
     protected override async Task OnInitializedAsync()
@@ -24,4 +27,41 @@ public partial class View
 
         StateHasChanged();
     }
+
+    private async Task ShowDeleteModal(int id)
+    {
+        _deleteId = id;
+        if(_deleteModal != null) await _deleteModal.ShowAsync();
+    }
+
+    private async Task HideDeleteModal()
+    {
+        if(_deleteModal != null) await _deleteModal.HideAsync();
+    }
+
+    private async Task ConfirmDelete()
+    {
+        await DeleteVersionAsync(_deleteId);
+        await HideDeleteModal();
+        await RefreshItemsAsync();
+    }
+
+    private async Task DeleteVersionAsync(int id)
+    {
+        await using DbContext ctx     = await DbContextFactory.CreateDbContextAsync();
+        Version?              version = await ctx.Versions.FindAsync(id);
+
+        if(version is not null)
+        {
+            ctx.Versions.Remove(version);
+            await ctx.SaveChangesAsync();
+        }
+    }
+
+    private async Task RefreshItemsAsync()
+    {
+        await using DbContext ctx = await DbContextFactory.CreateDbContextAsync();
+        _items = await ctx.Versions.OrderBy(static v => v.Name).ToListAsync();
+        StateHasChanged();
+    }
 }