Добавлено уведомление о обновлении

PlaylistShared.Pwa/Services/PwaUpdateService.cs

@@ -0,0 +1,33 @@
+using Microsoft.JSInterop;
+using MudBlazor;
+
+namespace PlaylistShared.Pwa.Services;
+
+public class PwaUpdateService
+{
+    private readonly ISnackbar _snackbar;
+    private readonly IJSRuntime _jsRuntime;
+
+    public PwaUpdateService(ISnackbar snackbar, IJSRuntime jsRuntime)
+    {
+        _snackbar = snackbar;
+        _jsRuntime = jsRuntime;
+    }
+
+    [JSInvokable]
+    public void OnNewVersionAvailable()
+    {
+        _snackbar.Add("Доступна новая версия! Обновите страницу.", Severity.Info, configure: options =>
+        {
+            options.Action = "Обновить";
+            options.ShowCloseIcon = false;
+            options.RequireInteraction = true;
+            options.OnClick = _ =>
+            {
+                _jsRuntime.InvokeVoidAsync("location.reload", true);
+                return Task.CompletedTask;
+            };
+            options.CloseAfterNavigation = true;
+        });
+    }
+}