add dart client to packages

2021-01-07 12:09:26 -04:00
parent e7eb0a27f6
commit f28cc91301
160 changed files with 26368 additions and 0 deletions
@@ -0,0 +1,119 @@
+import 'dart:convert';
+
+import 'package:logging/logging.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:stream_chat/src/api/responses.dart';
+import 'package:stream_chat/src/db/offline_storage.dart';
+import 'package:stream_chat/src/models/channel_model.dart';
+import 'package:stream_chat/src/models/channel_state.dart';
+import 'package:stream_chat/src/models/message.dart';
+
+import 'client.dart';
+import 'models/own_user.dart';
+
+/// Utility class to handle and show notifications
+class NotificationService {
+  static Future<void> _handleNotification(
+    Message message,
+    ChannelModel channelModel,
+    Client client,
+  ) async {
+    if (message != null && client.persistenceEnabled) {
+      if (client?.state?.channels == null) {
+        final sharedPreferences = await _getSharedPreferences();
+        final userId = sharedPreferences.getString(KEY_USER_ID);
+
+        final offlineStorage = OfflineStorage(userId, Logger('💽'));
+        await offlineStorage.updateChannelState(
+          ChannelState(
+            channel: channelModel,
+            messages: [message],
+          ),
+        );
+        await offlineStorage.disconnect();
+      } else {
+        final channel = client.state.channels[channelModel.cid];
+        channel.state.updateChannelState(
+          ChannelState(
+            channel: channelModel,
+            messages: [message],
+          ),
+        );
+      }
+    }
+  }
+
+  static SharedPreferences _sharedPreferences;
+  static Future<SharedPreferences> _getSharedPreferences() async {
+    _sharedPreferences ??= await SharedPreferences.getInstance();
+    return _sharedPreferences;
+  }
+
+  /// Gets the message using the client without storing it in the offline storage
+  /// It returns an object containing the information about the message and the channel
+  static Future<GetMessageResponse> getMessage(String messageId) async {
+    final sharedPreferences = await _getSharedPreferences();
+    final apiKey = sharedPreferences.getString(KEY_API_KEY);
+
+    final client = Client(
+      apiKey,
+      persistenceEnabled: false,
+    );
+    final userId = sharedPreferences.getString(KEY_USER_ID);
+    final token = sharedPreferences.getString(KEY_TOKEN);
+
+    client.state.user = OwnUser(id: userId);
+    client.token = token;
+
+    final res = await client.getMessage(messageId);
+    return res;
+  }
+
+  /// Stores the message in the offline storage
+  static Future<void> storeMessage(GetMessageResponse messageResponse) async {
+    final sharedPreferences = await _getSharedPreferences();
+    final userId = sharedPreferences.getString(KEY_USER_ID);
+
+    final offlineStorage = OfflineStorage(
+      userId,
+      Logger('💽'),
+    );
+
+    await offlineStorage.updateChannelState(ChannelState(
+      messages: [messageResponse.message],
+      channel: messageResponse.channel,
+    ));
+
+    await offlineStorage.disconnect();
+  }
+
+  /// Gets the message using the client and stores it in the offline storage
+  /// It returns an object containing the information about the message and the channel
+  static Future<GetMessageResponse> getAndStoreMessage(String messageId) async {
+    final getMessageResponse = await getMessage(messageId);
+    await storeMessage(getMessageResponse);
+    return getMessageResponse;
+  }
+
+  /// Handles the ios message queue generated by the Notification Service Extension
+  static Future<void> handleIosMessageQueue(Client client) async {
+    final sharedPreferences = await SharedPreferences.getInstance();
+    await sharedPreferences.reload();
+    final messageQueue = sharedPreferences.getStringList('messageQueue');
+    if (messageQueue != null) {
+      messageQueue.forEach((m) {
+        final jsonMessage = jsonDecode(m);
+
+        final message = Message.fromJson(jsonMessage);
+        final channelModel = ChannelModel.fromJson(jsonMessage['channel']);
+
+        _handleNotification(
+          message,
+          channelModel,
+          client,
+        );
+      });
+      await sharedPreferences.remove('messageQueue');
+    }
+  }
+}