feat: implement live tv recording system

bin/models/recording.dart

@@ -0,0 +1,100 @@
+import 'dart:convert';
+
+class Recording {
+  final String id;
+  final String userId;
+  final String channelId;
+  final String streamUrl;
+  final String title;
+  final DateTime startTime;
+  final DateTime endTime;
+  final String status; // 'scheduled', 'recording', 'completed', 'failed', 'cancelled'
+  final String? filePath;
+  final String? errorReason;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+
+  Recording({
+    required this.id,
+    required this.userId,
+    required this.channelId,
+    required this.streamUrl,
+    required this.title,
+    required this.startTime,
+    required this.endTime,
+    required this.status,
+    this.filePath,
+    this.errorReason,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  Map<String, dynamic> toMap() {
+    return {
+      'id': id,
+      'user_id': userId,
+      'channel_id': channelId,
+      'stream_url': streamUrl,
+      'title': title,
+      'start_time': startTime.toIso8601String(),
+      'end_time': endTime.toIso8601String(),
+      'status': status,
+      'file_path': filePath,
+      'error_reason': errorReason,
+      'created_at': createdAt.toIso8601String(),
+      'updated_at': updatedAt.toIso8601String(),
+    };
+  }
+
+  factory Recording.fromMap(Map<String, dynamic> map) {
+    return Recording(
+      id: map['id'] ?? '',
+      userId: map['user_id'] ?? '',
+      channelId: map['channel_id'] ?? '',
+      streamUrl: map['stream_url'] ?? '',
+      title: map['title'] ?? '',
+      startTime: DateTime.parse(map['start_time']),
+      endTime: DateTime.parse(map['end_time']),
+      status: map['status'] ?? 'scheduled',
+      filePath: map['file_path'],
+      errorReason: map['error_reason'],
+      createdAt: DateTime.parse(map['created_at']),
+      updatedAt: DateTime.parse(map['updated_at']),
+    );
+  }
+
+  String toJson() => json.encode(toMap());
+
+  factory Recording.fromJson(String source) =>
+      Recording.fromMap(json.decode(source));
+
+  Recording copyWith({
+    String? id,
+    String? userId,
+    String? channelId,
+    String? streamUrl,
+    String? title,
+    DateTime? startTime,
+    DateTime? endTime,
+    String? status,
+    String? filePath,
+    String? errorReason,
+    DateTime? createdAt,
+    DateTime? updatedAt,
+  }) {
+    return Recording(
+      id: id ?? this.id,
+      userId: userId ?? this.userId,
+      channelId: channelId ?? this.channelId,
+      streamUrl: streamUrl ?? this.streamUrl,
+      title: title ?? this.title,
+      startTime: startTime ?? this.startTime,
+      endTime: endTime ?? this.endTime,
+      status: status ?? this.status,
+      filePath: filePath ?? this.filePath,
+      errorReason: errorReason ?? this.errorReason,
+      createdAt: createdAt ?? this.createdAt,
+      updatedAt: updatedAt ?? this.updatedAt,
+    );
+  }
+}