✨ Notifications

lib/providers/notify.dart

@@ -0,0 +1,56 @@
+import 'dart:convert';
+
+import 'package:flutter/material.dart';
+import 'package:solian/models/pagination.dart';
+import 'package:solian/providers/auth.dart';
+import 'package:solian/utils/service_url.dart';
+import 'package:solian/models/notification.dart' as model;
+import 'package:web_socket_channel/web_socket_channel.dart';
+
+class NotifyProvider extends ChangeNotifier {
+  bool isOpened = false;
+
+  List<model.Notification> notifications = List.empty(growable: true);
+
+  Future<void> fetch(AuthProvider auth) async {
+    if (!await auth.isAuthorized()) return;
+
+    var uri = getRequestUri('passport', '/api/notifications?skip=0&take=25');
+    var res = await auth.client!.get(uri);
+    if (res.statusCode == 200) {
+      final result = PaginationResult.fromJson(jsonDecode(utf8.decode(res.bodyBytes)));
+      notifications = result.data?.map((x) => model.Notification.fromJson(x)).toList() ?? List.empty(growable: true);
+    }
+
+    notifyListeners();
+  }
+
+  Future<WebSocketChannel?> connect(AuthProvider auth) async {
+    if (auth.client == null) await auth.pickClient();
+    if (!await auth.isAuthorized()) return null;
+
+    await auth.refreshToken();
+
+    var ori = getRequestUri('passport', '/api/notifications/listen');
+    var uri = Uri(
+      scheme: ori.scheme.replaceFirst('http', 'ws'),
+      host: ori.host,
+      path: ori.path,
+      queryParameters: {'tk': Uri.encodeComponent(auth.client!.credentials.accessToken)},
+    );
+
+    final channel = WebSocketChannel.connect(uri);
+    await channel.ready;
+
+    return channel;
+  }
+
+  void onRemoteMessage(model.Notification item) {
+    notifications.add(item);
+    notifyListeners();
+  }
+
+  void clearNonRealtime() {
+    notifications = notifications.where((x) => !x.isRealtime).toList();
+  }
+}