import 'message.dart';

class BriefingConversation {
  final int id;
  final String title;
  final String? briefingDate; // YYYY-MM-DD or null
  final List<Message> messages;

  const BriefingConversation({
    required this.id,
    required this.title,
    this.briefingDate,
    required this.messages,
  });

  factory BriefingConversation.fromJson(Map<String, dynamic> json) {
    final rawMessages = json['messages'] as List<dynamic>? ?? [];
    return BriefingConversation(
      id: json['id'] as int,
      title: json['title'] as String? ?? '',
      briefingDate: json['briefing_date'] as String?,
      messages: rawMessages
          .map((e) => Message.fromJson(e as Map<String, dynamic>))
          .toList(),
    );
  }

  BriefingConversation copyWith({List<Message>? messages}) =>
      BriefingConversation(
        id: id,
        title: title,
        briefingDate: briefingDate,
        messages: messages ?? this.messages,
      );
}