class NewsItem {
  final int id;
  final String title;
  final String url;
  final String snippet;
  final String source;
  final DateTime? publishedAt;
  final List<String> topics;
  final String? reaction;

  const NewsItem({
    required this.id,
    required this.title,
    required this.url,
    required this.snippet,
    required this.source,
    this.publishedAt,
    required this.topics,
    this.reaction,
  });

  factory NewsItem.fromJson(Map<String, dynamic> json) => NewsItem(
        id: json['id'] as int,
        title: json['title'] as String? ?? '',
        url: json['url'] as String? ?? '',
        snippet: json['snippet'] as String? ?? '',
        source: json['source'] as String? ?? '',
        publishedAt: json['published_at'] != null
            ? DateTime.tryParse(json['published_at'] as String)
            : null,
        topics: (json['topics'] as List<dynamic>?)
                ?.cast<String>()
                .toList() ??
            [],
        reaction: json['reaction'] as String?,
      );
}