new city

packages/city_repository/lib/src/models/region.dart

@@ -0,0 +1,41 @@
+import 'package:equatable/equatable.dart';
+import 'package:city_repository/city_repository.dart';
+
+class Region extends Equatable {
+  final String name;
+  final List<City> cities;
+
+  const Region({
+    required this.name,
+    required this.cities,
+  });
+
+  static const empty = Region(name: '', cities: []);
+  Region copyWith({
+    String? name,
+    List<City>? cities,
+  }) {
+    return Region(
+      name: name ?? this.name,
+      cities: cities ?? this.cities,
+    );
+  }
+
+  bool get isEmpty => this == Region.empty;
+
+  bool get isNotEmpty => this != Region.empty;
+
+  Region toEntity() {
+    return Region(name: name, cities: cities);
+  }
+
+  static Region fromEntity(RegionEntity entity) {
+    return Region(
+      name: entity.name,
+      cities: entity.cities.map((city) => City.fromEntity(city)).toList(),
+    );
+  }
+
+  @override
+  List<Object?> get props => [name, cities];
+}