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lib/pages/teacher/home/viewmodel/home_view_model.dart

@@ -0,0 +1,56 @@
+import 'package:app/request/api/room_api.dart';
+import 'package:app/request/dto/room/room_info_dto.dart';
+import 'package:app/utils/time.dart';
+import 'package:flutter/material.dart';
+
+class HomeViewModel extends ChangeNotifier {
+  RoomInfoDto? roomInfo;
+  bool loading = true;
+
+  HomeViewModel() {
+    loadData();
+  }
+
+  //加载数据
+  Future<void> loadData() async {
+    final list = await getRoomListApi();
+    loading = false;
+
+    if (list.isNotEmpty) {
+      roomInfo = list.first;
+    }
+
+    notifyListeners();
+  }
+
+  ///计算会议时间
+  int get roomMinutes {
+    if (roomInfo == null) return 0;
+
+    final start = roomInfo!.startTime;
+    final end = roomInfo!.endTime;
+
+    final s = DateTime.parse('2000-01-01 $start:00');
+    final e = DateTime.parse('2000-01-01 $end:00');
+
+    return e.difference(s).inMinutes;
+  }
+
+  ///能否进入房间
+  bool get canEnterRoom {
+    final info = roomInfo;
+    if (info == null) return false;
+
+    final now = DateTime.now();
+
+    //开始时间
+    final startTime = parseTime(info.startTime);
+
+    // 当前时间距离开始时间是否超过 5 分钟
+    if (now.isBefore(startTime) && startTime.difference(now).inMinutes > 5) {
+      return false;
+    }
+
+    return true;
+  }
+}