1

lib/pages/teacher/room/viewmodel/students_view_model.dart

@@ -1,33 +1,78 @@
 import 'package:app/data/models/student.dart';
-import 'package:app/websocket/room_websocket.dart';
+import 'package:app/request/dto/room/room_user_dto.dart';
+import 'package:app/request/websocket/room_protocol.dart';
+import 'package:app/request/websocket/room_websocket.dart';
+import 'package:app/utils/time.dart';
 import 'package:flutter/cupertino.dart';
 
 class StudentsViewModel extends ChangeNotifier {
   ///学生摄像头列表
   List<Student> _students = [];
 
+  ///房间的基础信息，房间id、房间开始时间
+  final int roomId;
+  late final DateTime startTime;
+
+  StudentsViewModel({required this.roomId, String? start}) {
+    startTime = parseTime(start!);
+    _startRoom();
+  }
+
   List<Student> get students => _students;
 
+  ///是否能开始自习室
+  bool get canEnterRoom {
+    final now = DateTime.now();
+
+    // 如果到了开始时间，则可以进入房间
+    if (now.isAfter(startTime)) {
+      return true;
+    }
+    return false;
+  }
+
   ///websocket管理
   late RoomWebSocket _ws;
 
-  StudentsViewModel() {
-    _startRoom();
-  }
-
   ///开始链接房间
-  void _startRoom() {
+  void _startRoom() async {
     _ws = RoomWebSocket();
-    _ws.connect();
+    //如果socket的token没有，先初始化
+    if (_ws.wsToken.isEmpty) {
+      await _ws.initToken(roomId);
+    }
+    //启动连接
+    await _ws.connect();
+    //进入房间命令
+    _ws.send(RoomCommand.joinRoom);
 
+    //监听各种ws事件
     _ws.stream.listen((msg) {
-      _handleMessage();
+      if (msg.event == RoomEvent.changeUser) {
+        final list = msg.data['user_list'].map((x) => RoomUserDto.fromJson(x)).toList();
+        onStudentChange(list);
+      }
     });
     notifyListeners();
   }
 
-  ///发送命令
-  void _handleMessage() {
-    print("监听webscoket传来的事件");
+  ///自习室的开关
+  /// - [isOpen]: 是否开启
+  void toggleRoom({required bool isOpen}) {
+    if (isOpen) {
+      _ws.send(RoomCommand.openRoom);
+    } else {
+      _ws.send(RoomCommand.closeRoom);
+    }
+  }
+
+  ///学生人员变化事件，（如加入、退出、掉线）
+  void onStudentChange(List<RoomUserDto> list) {}
+
+  //销毁
+  @override
+  void dispose() {
+    super.dispose();
+    _ws.dispose();
   }
 }