// Author: fruit.com.cn

import 'json_numbers.dart';

/// Server notice list page.
class NoticePage {
  const NoticePage({required this.total, this.notices = const []});

  final int total;
  final List<AppNotice> notices;

  /// Parses the anonymous `/app/notices` page shell.
  factory NoticePage.fromJson(Map<String, dynamic> json) {
    final rawList = json['list'];
    return NoticePage(
      total: jsonToInt(json['total']),
      notices: [
        if (rawList is List)
          for (final item in rawList)
            if (item is Map<String, dynamic>) AppNotice.fromJson(item),
      ],
    );
  }
}

/// System notice returned by `/app/notices`.
class AppNotice {
  const AppNotice({
    required this.id,
    required this.title,
    required this.content,
    required this.type,
    required this.publishAt,
    this.expireAt,
  });

  final String id;
  final String title;
  final String content;
  final String type;
  final DateTime? publishAt;
  final DateTime? expireAt;

  /// Parses string IDs without narrowing them through `int`.
  factory AppNotice.fromJson(Map<String, dynamic> json) => AppNotice(
    id: jsonToId(json['id']),
    title: json['title']?.toString() ?? '',
    content: json['content']?.toString() ?? '',
    type: json['type']?.toString() ?? '',
    publishAt: DateTime.tryParse(json['publishAt']?.toString() ?? ''),
    expireAt: DateTime.tryParse(json['expireAt']?.toString() ?? ''),
  );
}