use xdg_desktop_portal over flutter_local_notifications on linux

lib/controllers/notification.dart

@@ -1,10 +1,13 @@
 import "dart:io";
 
+import "package:flutter/foundation.dart";
 import "package:material_ui/material_ui.dart";
+import "package:nexus/controllers/portal.dart";
 import "package:nexus/main.dart";
 import "package:flutter_local_notifications/flutter_local_notifications.dart";
 import "package:flutter_riverpod/flutter_riverpod.dart";
 import "package:nexus/pages/notifications.dart";
+import "package:xdg_desktop_portal/xdg_desktop_portal.dart";
 
 class NotificationController
     extends AsyncNotifier<FlutterLocalNotificationsPlugin> {
@@ -12,40 +15,77 @@ class NotificationController
   Future<FlutterLocalNotificationsPlugin> build() async {
     final notifications = FlutterLocalNotificationsPlugin();
 
-    final darwin = DarwinInitializationSettings();
+    if (!Platform.isLinux) {
+      final darwin = DarwinInitializationSettings();
 
-    await notifications.initialize(
-      settings: .new(
-        windows: .new(
-          appName: "Nexus",
-          appUserModelId: "nexus.federated.nexus",
-          guid: "dde78daf-130f-4e46-a80a-e31deeab45d7",
+      await notifications.initialize(
+        settings: .new(
+          windows: .new(
+            appName: "Nexus",
+            appUserModelId: "nexus.federated.nexus",
+            guid: "dde78daf-130f-4e46-a80a-e31deeab45d7",
+          ),
+          android: .new("ic_launcher_foreground"),
+          iOS: darwin,
+          macOS: darwin,
         ),
-        android: .new("ic_launcher_foreground"),
-        iOS: darwin,
-        macOS: darwin,
-        linux: .new(defaultActionName: "Open"),
-      ),
-      onDidReceiveNotificationResponse: (details) {
-        if (details.payload case final eventId?) {
-          if (navigatorKey.currentContext case final context?) {
+        onDidReceiveNotificationResponse: (details) {
+          if (details.payload case final eventId?) {
+            if (navigatorKey.currentContext case final context?) {
+              Navigator.of(context).push(
+                MaterialPageRoute(
+                  builder: (_) => NotificationsPage(
+                    highlightedEventId: eventId,
+                    defaultToAllNotifications: true,
+                  ),
+                ),
+              );
+            }
+          }
+        },
+      );
+    }
+
+    if (Platform.isLinux) {
+      final portal = await ref.watch(PortalController.provider.future);
+
+      portal.notification.actionInvoked.listen((event) {
+        if (event.action != "app.event") {
+          return;
+        }
+
+        if (navigatorKey.currentContext case final context?) {
+          if (context.mounted) {
             Navigator.of(context).push(
               MaterialPageRoute(
                 builder: (_) => NotificationsPage(
-                  highlightedEventId: eventId,
+                  highlightedEventId: event.id,
                   defaultToAllNotifications: true,
                 ),
               ),
             );
           }
         }
-      },
-    );
+      });
+    }
+
+    ref.onDispose(() {
+      // The portal client owns its D-Bus connection.
+      if (Platform.isLinux) {
+        ref.read(PortalController.provider.future).then((portal) {
+          portal.close();
+        });
+      }
+    });
 
     return notifications;
   }
 
   Future<bool> requestPermissions() async {
+    if (Platform.isLinux) {
+      return true;
+    }
+
     final controller = await future;
 
     if (Platform.isIOS) {
@@ -82,31 +122,41 @@ class NotificationController
     String? payload,
   }) async {
     debugPrint("Sending notification for $id");
-    final notificationDetails = NotificationDetails(
-      android: .new(
-        "messages",
-        "Messages",
-        largeIcon: icon == null ? null : FilePathAndroidBitmap(icon.path),
-      ),
-      linux: .new(
-        category: LinuxNotificationCategory.imReceived,
-        defaultActionName: "app.event",
-        icon: icon == null ? null : FilePathLinuxIcon(icon.path),
-      ),
-      // TODO: See if icons can be added to iOS, macOS, and Windows notifications (#68)
-      iOS: .new(),
-      macOS: .new(),
-      windows: .new(),
-    );
 
-    final controller = await future;
-    await controller.show(
-      id: id,
-      title: title,
-      body: body,
-      notificationDetails: notificationDetails,
-      payload: payload,
-    );
+    if (Platform.isLinux) {
+      final portal = await ref.read(PortalController.provider.future);
+
+      await portal.notification.addNotification(
+        id.toString(),
+        title: title,
+        body: body,
+        icon: icon == null ? null : XdgNotificationIconFile(icon.path),
+        defaultAction: "app.event",
+      );
+    } else {
+      final notificationDetails = NotificationDetails(
+        android: .new(
+          "messages",
+          "Messages",
+          largeIcon: icon == null ? null : FilePathAndroidBitmap(icon.path),
+        ),
+        // TODO: See if icons can be added to iOS, macOS, and Windows
+        // notifications (#68)
+        iOS: .new(),
+        macOS: .new(),
+        windows: .new(),
+      );
+
+      final controller = await future;
+
+      await controller.show(
+        id: id,
+        title: title,
+        body: body,
+        notificationDetails: notificationDetails,
+        payload: payload,
+      );
+    }
   }
 
   static final provider =

lib/controllers/portal.dart

@@ -0,0 +1,17 @@
+import "package:flutter_riverpod/flutter_riverpod.dart";
+import "package:xdg_desktop_portal/xdg_desktop_portal.dart";
+
+class PortalController extends AsyncNotifier<XdgDesktopPortalClient> {
+  @override
+  Future<XdgDesktopPortalClient> build() async {
+    final portal = XdgDesktopPortalClient();
+    await portal.registerApplication("nexus.federated.nexus");
+
+    return portal;
+  }
+
+  static final provider =
+      AsyncNotifierProvider<PortalController, XdgDesktopPortalClient>(
+        PortalController.new,
+      );
+}

linux/nexus.federated.nexus.desktop

@@ -8,6 +8,4 @@ Terminal=false
 Type=Application
 Categories=Chat;Network;InstantMessaging;
 MimeType=x-scheme-handler/nexus.federated.nexus;
-StartupNotify=true
 DBusActivatable=true
-X-GNOME-UsesNotifications=true

linux/nexus.federated.nexus.service

@@ -1,3 +1,3 @@
 [D-BUS Service]
 Name=nexus.federated.nexus
-Exec=/usr/bin/env FLUTTER_HEADLESS=1 nexus
+Exec=/usr/bin/env nexus

pubspec.lock

@@ -495,23 +495,21 @@ packages:
     source: hosted
     version: "22.3.0"
   flutter_local_notifications_linux:
-    dependency: "direct main"
+    dependency: transitive
     description:
-      path: flutter_local_notifications_linux
-      ref: "quad/feat/xdg-portal-notifs"
-      resolved-ref: d853ff4997f6dd2b9ecdc53d37fb337cebe63863
-      url: "https://github.com/Henry-Hiles/flutter_local_notifications"
-    source: git
-    version: "9.0.0-dev.1"
+      name: flutter_local_notifications_linux
+      sha256: "9ca97e63776f29ab1b955725c09999fc2c150523269db150c39274f2a43c5a8b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "8.0.1"
   flutter_local_notifications_platform_interface:
-    dependency: "direct overridden"
+    dependency: transitive
     description:
-      path: flutter_local_notifications_platform_interface
-      ref: "quad/feat/xdg-portal-notifs"
-      resolved-ref: d853ff4997f6dd2b9ecdc53d37fb337cebe63863
-      url: "https://github.com/Henry-Hiles/flutter_local_notifications"
-    source: git
-    version: "13.0.0-dev.1"
+      name: flutter_local_notifications_platform_interface
+      sha256: "43c3761d916c9bd3d5c7ebbc44d82f4990329840c0c5d62ad5260cc1b5d399bd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "12.2.0"
   flutter_local_notifications_web:
     dependency: transitive
     description:
@@ -1745,12 +1743,13 @@ packages:
     source: hosted
     version: "0.5.2"
   xdg_desktop_portal:
-    dependency: transitive
+    dependency: "direct main"
     description:
-      name: xdg_desktop_portal
-      sha256: "4fae74b6ed63a449d4c796a74265cebdd912c390336dedc06d705142f3b939d7"
-      url: "https://pub.dev"
-    source: hosted
+      path: "."
+      ref: HEAD
+      resolved-ref: "6d070b677f908b01065b4dce79ddc9a208daadbf"
+      url: "https://github.com/Henry-Hiles/xdg_desktop_portal.dart"
+    source: git
     version: "0.1.14"
   xdg_directories:
     dependency: "direct main"

pubspec.yaml

@@ -35,16 +35,6 @@ dependency_overrides:
         git:
             url: https://github.com/appelladev/linkify
             ref: fix/consecutive-periods-loose-url
-    flutter_local_notifications_linux:
-        git:
-            url: https://github.com/Henry-Hiles/flutter_local_notifications
-            ref: quad/feat/xdg-portal-notifs
-            path: flutter_local_notifications_linux
-    flutter_local_notifications_platform_interface:
-        git:
-            url: https://github.com/Henry-Hiles/flutter_local_notifications
-            ref: quad/feat/xdg-portal-notifs
-            path: flutter_local_notifications_platform_interface
 
 dependencies:
     flutter:
@@ -99,8 +89,10 @@ dependencies:
     unifiedpush: 6.2.0
     unifiedpush_storage_shared_preferences: 1.0.0
     flutter_local_notifications: 22.3.0
-    flutter_local_notifications_linux: 8.0.1
     material_emoji_picker: 1.1.1
+    xdg_desktop_portal:
+        git:
+            url: https://github.com/Henry-Hiles/xdg_desktop_portal.dart
 
 dev_dependencies:
     build_runner: 2.16.1