worker/lib/features/news/data/models/news_article_model.dart

/// Data Model: News Article Model
///
/// Data layer model for news articles.
/// Handles JSON serialization and conversion to/from domain entity.
library;

import 'package:worker/features/news/domain/entities/news_article.dart';

/// News Article Model
///
/// Used in the data layer for:
/// - JSON serialization/deserialization from API
/// - Conversion to domain entity
/// - Local storage (if needed)
class NewsArticleModel {
  /// Unique article ID
  final String id;

  /// Article title
  final String title;

  /// Article excerpt/summary
  final String excerpt;

  /// Full article content (optional)
  final String? content;

  /// Featured image URL
  final String imageUrl;

  /// Article category
  final String category;

  /// Publication date (ISO 8601 string)
  final String publishedDate;

  /// View count
  final int viewCount;

  /// Estimated reading time in minutes
  final int readingTimeMinutes;

  /// Whether this is a featured article
  final bool isFeatured;

  /// Author name (optional)
  final String? authorName;

  /// Author avatar URL (optional)
  final String? authorAvatar;

  /// Constructor
  const NewsArticleModel({
    required this.id,
    required this.title,
    required this.excerpt,
    this.content,
    required this.imageUrl,
    required this.category,
    required this.publishedDate,
    required this.viewCount,
    required this.readingTimeMinutes,
    this.isFeatured = false,
    this.authorName,
    this.authorAvatar,
  });

  /// Create model from JSON
  factory NewsArticleModel.fromJson(Map<String, dynamic> json) {
    return NewsArticleModel(
      id: json['id'] as String,
      title: json['title'] as String,
      excerpt: json['excerpt'] as String,
      content: json['content'] as String?,
      imageUrl: json['image_url'] as String,
      category: json['category'] as String,
      publishedDate: json['published_date'] as String,
      viewCount: json['view_count'] as int,
      readingTimeMinutes: json['reading_time_minutes'] as int,
      isFeatured: json['is_featured'] as bool? ?? false,
      authorName: json['author_name'] as String?,
      authorAvatar: json['author_avatar'] as String?,
    );
  }

  /// Convert model to JSON
  Map<String, dynamic> toJson() {
    return {
      'id': id,
      'title': title,
      'excerpt': excerpt,
      'content': content,
      'image_url': imageUrl,
      'category': category,
      'published_date': publishedDate,
      'view_count': viewCount,
      'reading_time_minutes': readingTimeMinutes,
      'is_featured': isFeatured,
      'author_name': authorName,
      'author_avatar': authorAvatar,
    };
  }

  /// Convert model to domain entity
  NewsArticle toEntity() {
    return NewsArticle(
      id: id,
      title: title,
      excerpt: excerpt,
      content: content,
      imageUrl: imageUrl,
      category: _parseCategory(category),
      publishedDate: DateTime.parse(publishedDate),
      viewCount: viewCount,
      readingTimeMinutes: readingTimeMinutes,
      isFeatured: isFeatured,
      authorName: authorName,
      authorAvatar: authorAvatar,
    );
  }

  /// Create model from domain entity
  factory NewsArticleModel.fromEntity(NewsArticle entity) {
    return NewsArticleModel(
      id: entity.id,
      title: entity.title,
      excerpt: entity.excerpt,
      content: entity.content,
      imageUrl: entity.imageUrl,
      category: _categoryToString(entity.category),
      publishedDate: entity.publishedDate.toIso8601String(),
      viewCount: entity.viewCount,
      readingTimeMinutes: entity.readingTimeMinutes,
      isFeatured: entity.isFeatured,
      authorName: entity.authorName,
      authorAvatar: entity.authorAvatar,
    );
  }

  /// Parse category from string
  static NewsCategory _parseCategory(String category) {
    switch (category.toLowerCase()) {
      case 'news':
        return NewsCategory.news;
      case 'professional':
      case 'technique':
        return NewsCategory.professional;
      case 'projects':
        return NewsCategory.projects;
      case 'events':
        return NewsCategory.events;
      case 'promotions':
        return NewsCategory.promotions;
      default:
        return NewsCategory.news;
    }
  }

  /// Convert category to string
  static String _categoryToString(NewsCategory category) {
    switch (category) {
      case NewsCategory.news:
        return 'news';
      case NewsCategory.professional:
        return 'professional';
      case NewsCategory.projects:
        return 'projects';
      case NewsCategory.events:
        return 'events';
      case NewsCategory.promotions:
        return 'promotions';
    }
  }

  @override
  String toString() {
    return 'NewsArticleModel(id: $id, title: $title, category: $category, '
        'publishedDate: $publishedDate)';
  }
}