import 'tab_item_purchase.dart';
import '../utils/collection_utils.dart';

class TabItem {
  final String id;
  final String tabId;
  final String productId;
  final String productName;
  final int quantity;
  final int unitPriceInCents;
  final List<TabItemPurchase> purchases;

  const TabItem({
    required this.id,
    required this.tabId,
    required this.productId,
    required this.productName,
    required this.quantity,
    required this.unitPriceInCents,
    this.purchases = const [],
  });

  int get lineTotalInCents => quantity * unitPriceInCents;

  String get formattedLineTotal {
    return '€${(lineTotalInCents / 100).toStringAsFixed(2)}';
  }

  String get formattedUnitPrice {
    return '€${(unitPriceInCents / 100).toStringAsFixed(2)}';
  }

  @override
  bool operator ==(Object other) =>
      identical(this, other) ||
      other is TabItem &&
          id == other.id &&
          tabId == other.tabId &&
          productId == other.productId &&
          productName == other.productName &&
          quantity == other.quantity &&
          unitPriceInCents == other.unitPriceInCents &&
          listEquals(purchases, other.purchases);

  @override
  int get hashCode => Object.hash(
    id,
    tabId,
    productId,
    productName,
    quantity,
    unitPriceInCents,
    Object.hashAll(purchases),
  );
}