init

client/lib/shared/models/notification_model.dart

@@ -0,0 +1,90 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'notification_model.g.dart';
+
+/// 通知模型
+@JsonSerializable()
+class NotificationModel {
+  final int id;
+  
+  @JsonKey(name: 'user_id')
+  final int userId;
+  
+  final String type;
+  final String title;
+  final String content;
+  final String? link;
+  
+  @JsonKey(name: 'is_read')
+  final bool isRead;
+  
+  final int priority;
+  
+  @JsonKey(name: 'created_at')
+  final DateTime createdAt;
+  
+  @JsonKey(name: 'read_at')
+  final DateTime? readAt;
+
+  const NotificationModel({
+    required this.id,
+    required this.userId,
+    required this.type,
+    required this.title,
+    required this.content,
+    this.link,
+    required this.isRead,
+    required this.priority,
+    required this.createdAt,
+    this.readAt,
+  });
+
+  factory NotificationModel.fromJson(Map<String, dynamic> json) =>
+      _$NotificationModelFromJson(json);
+
+  Map<String, dynamic> toJson() => _$NotificationModelToJson(this);
+
+  /// 通知类型
+  String get typeLabel {
+    switch (type) {
+      case 'system':
+        return '系统通知';
+      case 'learning':
+        return '学习提醒';
+      case 'achievement':
+        return '成就通知';
+      default:
+        return '通知';
+    }
+  }
+
+  /// 优先级
+  String get priorityLabel {
+    switch (priority) {
+      case 0:
+        return '普通';
+      case 1:
+        return '重要';
+      case 2:
+        return '紧急';
+      default:
+        return '普通';
+    }
+  }
+
+  /// 格式化时间
+  String get timeAgo {
+    final now = DateTime.now();
+    final difference = now.difference(createdAt);
+
+    if (difference.inDays > 0) {
+      return '${difference.inDays}天前';
+    } else if (difference.inHours > 0) {
+      return '${difference.inHours}小时前';
+    } else if (difference.inMinutes > 0) {
+      return '${difference.inMinutes}分钟前';
+    } else {
+      return '刚刚';
+    }
+  }
+}