news page

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

@@ -0,0 +1,180 @@
+/// 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)';
+  }
+}