import 'package:riverpod_annotation/riverpod_annotation.dart';
import '../../domain/entities/cart_item.dart';

part 'cart_provider.g.dart';

/// Provider for shopping cart
@riverpod
class Cart extends _$Cart {
  @override
  Future<List<CartItem>> build() async {
    // TODO: Implement with repository
    return [];
  }

  Future<void> addItem(CartItem item) async {
    // TODO: Implement add to cart
    state = const AsyncValue.loading();
    state = await AsyncValue.guard(() async {
      final currentItems = state.value ?? [];
      return [...currentItems, item];
    });
  }

  Future<void> removeItem(String productId) async {
    // TODO: Implement remove from cart
    state = const AsyncValue.loading();
    state = await AsyncValue.guard(() async {
      final currentItems = state.value ?? [];
      return currentItems.where((item) => item.productId != productId).toList();
    });
  }

  Future<void> updateQuantity(String productId, int quantity) async {
    // TODO: Implement update quantity
    state = const AsyncValue.loading();
    state = await AsyncValue.guard(() async {
      final currentItems = state.value ?? [];
      return currentItems.map((item) {
        if (item.productId == productId) {
          return item.copyWith(quantity: quantity);
        }
        return item;
      }).toList();
    });
  }

  Future<void> clearCart() async {
    // TODO: Implement clear cart
    state = const AsyncValue.loading();
    state = await AsyncValue.guard(() async {
      return [];
    });
  }
}