favorite

lib/features/favorites/domain/entities/favorite.dart

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+/// Domain Entity: Favorite
+///
+/// Pure business entity representing a user's favorite product.
+/// This entity is framework-independent and contains only business logic.
+library;
+
+/// Favorite Entity
+///
+/// Represents a product that a user has marked as favorite.
+/// Used across all layers but originates in the domain layer.
+class Favorite {
+  /// Unique identifier for the favorite entry
+  final String favoriteId;
+
+  /// Reference to the product that was favorited
+  final String productId;
+
+  /// Reference to the user who favorited the product
+  final String userId;
+
+  /// Timestamp when the product was favorited
+  final DateTime createdAt;
+
+  const Favorite({
+    required this.favoriteId,
+    required this.productId,
+    required this.userId,
+    required this.createdAt,
+  });
+
+  /// Copy with method for creating modified copies
+  Favorite copyWith({
+    String? favoriteId,
+    String? productId,
+    String? userId,
+    DateTime? createdAt,
+  }) {
+    return Favorite(
+      favoriteId: favoriteId ?? this.favoriteId,
+      productId: productId ?? this.productId,
+      userId: userId ?? this.userId,
+      createdAt: createdAt ?? this.createdAt,
+    );
+  }
+
+  @override
+  String toString() {
+    return 'Favorite(favoriteId: $favoriteId, productId: $productId, '
+        'userId: $userId, createdAt: $createdAt)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+
+    return other is Favorite &&
+        other.favoriteId == favoriteId &&
+        other.productId == productId &&
+        other.userId == userId &&
+        other.createdAt == createdAt;
+  }
+
+  @override
+  int get hashCode {
+    return Object.hash(
+      favoriteId,
+      productId,
+      userId,
+      createdAt,
+    );
+  }
+}