feat(desktop): implement native desktop notifications for task completion and errors (#1293)

ui/flutter/lib/app/modules/app/controllers/app_controller.dart

@@ -17,6 +17,7 @@ import 'package:uri_to_file/uri_to_file.dart';
 import 'package:url_launcher/url_launcher.dart';
 import 'package:window_manager/window_manager.dart';
 
+
 import '../../../../api/api.dart';
 import '../../../../api/model/create_task.dart';
 import '../../../../api/model/downloader_config.dart';
@@ -38,6 +39,7 @@ import '../../../../util/util.dart';
 import '../../../routes/app_pages.dart';
 import '../../../rpc/rpc.dart';
 import '../../redirect/views/redirect_view.dart';
+import '../../../services/notification_service.dart';
 
 const unixSocketPath = 'gopeed.sock';
 
@@ -96,6 +98,10 @@ class AppController extends GetxController with WindowListener, TrayListener {
 
     _initWindows().onError((error, stackTrace) =>
         logger.w("initWindows error", error, stackTrace));
+        
+    if (Util.isDesktop()) {
+      Get.put(NotificationService());
+    }
 
     _initTray().onError(
         (error, stackTrace) => logger.w("initTray error", error, stackTrace));

ui/flutter/lib/app/modules/setting/views/setting_view.dart

@@ -498,6 +498,27 @@ class SettingView extends GetView<SettingController> {
             );
           });
 
+    final buildDesktopNotification = !Util.isDesktop()
+        ? () => null
+        : _buildConfigItem('desktopNotification', () {
+            return appController.downloaderConfig.value.extra.desktopNotification
+                ? 'on'.tr
+                : 'off'.tr;
+          }, (Key key) {
+            return Container(
+              alignment: Alignment.centerLeft,
+              child: Switch(
+                value: appController.downloaderConfig.value.extra.desktopNotification,
+                onChanged: (bool value) async {
+                  appController.downloaderConfig.update((val) {
+                    val!.extra.desktopNotification = value;
+                  });
+                  await debounceSave();
+                },
+              ),
+            );
+          });
+
     // http config items start
     final httpConfig = downloaderCfg.value.protocolConfig.http;
     final buildHttpUa =
@@ -1592,6 +1613,7 @@ class SettingView extends GetView<SettingController> {
                             buildBrowserExtension(),
                             buildAutoStartup(),
                             buildMenubarMode(),
+                            buildDesktopNotification(),
                           ]),
                         )),
                         Text('archives'.tr),