import 'dart:convert'; import 'dart:ui'; import 'package:flutter_cache_manager/flutter_cache_manager.dart'; import 'package:flutter_gen/gen_l10n/l10n.dart'; import 'package:flutter_local_notifications/flutter_local_notifications.dart'; import 'package:matrix/matrix.dart'; import 'package:shared_preferences/shared_preferences.dart'; import 'package:fluffychat/config/app_config.dart'; import 'package:fluffychat/config/setting_keys.dart'; import 'package:fluffychat/utils/client_manager.dart'; import 'package:fluffychat/utils/matrix_sdk_extensions.dart/matrix_locals.dart'; Future pushHelper( PushNotification notification, { Client? client, L10n? l10n, String? activeRoomId, Future Function(String?)? onSelectNotification, }) async { final isBackgroundMessage = client == null; Logs().v( 'Push helper has been started (background=$isBackgroundMessage).', notification.toJson(), ); if (!isBackgroundMessage && activeRoomId == notification.roomId && activeRoomId != null && client?.syncPresence == null) { Logs().v('Room is in foreground. Stop push helper here.'); return; } // Initialise the plugin. app_icon needs to be a added as a drawable resource to the Android head project final _flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin(); await _flutterLocalNotificationsPlugin.initialize( const InitializationSettings( android: AndroidInitializationSettings('notifications_icon'), iOS: IOSInitializationSettings(), ), onSelectNotification: onSelectNotification, ); client ??= (await ClientManager.getClients(initialize: false)).first; final event = await client.getEventByPushNotification( notification, storeInDatabase: isBackgroundMessage, ); if (event == null) { Logs().v('Notification is a clearing indicator.'); await _flutterLocalNotificationsPlugin.cancelAll(); final store = await SharedPreferences.getInstance(); await store.setString(SettingKeys.notificationCurrentIds, json.encode({})); return; } Logs().v('Push helper got notification event.'); l10n ??= await L10n.delegate.load(window.locale); final matrixLocals = MatrixLocals(l10n); // Calculate the body final body = event.getLocalizedBody( matrixLocals, plaintextBody: true, withSenderNamePrefix: !event.room.isDirectChat, hideReply: true, hideEdit: true, removeMarkdown: true, ); // The person object for the android message style notification final avatar = event.room.avatar ?.getThumbnail( client, width: 126, height: 126, ) .toString(); final avatarFile = avatar == null ? null : await DefaultCacheManager().getSingleFile(avatar); // Show notification final androidPlatformChannelSpecifics = AndroidNotificationDetails( AppConfig.pushNotificationsChannelId, AppConfig.pushNotificationsChannelName, channelDescription: AppConfig.pushNotificationsChannelDescription, styleInformation: MessagingStyleInformation( Person(name: event.room.client.userID), conversationTitle: event.room.displayname, groupConversation: !event.room.isDirectChat, messages: [ Message( body, event.originServerTs, Person( name: event.room.displayname, icon: avatarFile == null ? null : BitmapFilePathAndroidIcon(avatarFile.path), ), ) ], ), ticker: l10n.unreadChats(notification.counts?.unread ?? 1), importance: Importance.max, priority: Priority.high, groupKey: event.room.id, ); const iOSPlatformChannelSpecifics = IOSNotificationDetails(); final platformChannelSpecifics = NotificationDetails( android: androidPlatformChannelSpecifics, iOS: iOSPlatformChannelSpecifics, ); await _flutterLocalNotificationsPlugin.show( await mapRoomIdToInt(event.room.id), event.room.displayname, body, platformChannelSpecifics, payload: event.roomId, ); Logs().v('Push helper has been completed!'); } /// Workaround for the problem that local notification IDs must be int but we /// sort by [roomId] which is a String. To make sure that we don't have duplicated /// IDs we map the [roomId] to a number and store this number. Future mapRoomIdToInt(String roomId) async { final store = await SharedPreferences.getInstance(); final idMap = Map.from( jsonDecode(store.getString(SettingKeys.notificationCurrentIds) ?? '{}')); int? currentInt; try { currentInt = idMap[roomId]; } catch (_) { currentInt = null; } if (currentInt != null) { return currentInt; } var nCurrentInt = 0; while (idMap.values.contains(nCurrentInt)) { nCurrentInt++; } idMap[roomId] = nCurrentInt; await store.setString(SettingKeys.notificationCurrentIds, json.encode(idMap)); return nCurrentInt; }