import 'tab_item.dart';

class BarTab {
  final String id;
  final String customerName;
  final String status;
  final DateTime openedAt;
  final DateTime? closedAt;
  final List<TabItem> items;

  const BarTab({
    required this.id,
    required this.customerName,
    required this.status,
    required this.openedAt,
    required this.items,
    this.closedAt,
  });

  int get totalInCents {
    return items.fold<int>(0, (total, item) => total + item.lineTotalInCents);
  }

  int get itemCount {
    return items.fold<int>(0, (total, item) => total + item.quantity);
  }

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

  bool get isOpen => status == 'open';

  @override
  bool operator ==(Object other) =>
      identical(this, other) ||
      other is BarTab &&
          id == other.id &&
          customerName == other.customerName &&
          status == other.status &&
          openedAt == other.openedAt &&
          closedAt == other.closedAt &&
          _listEquals(items, other.items);

  @override
  int get hashCode => Object.hash(
        id,
        customerName,
        status,
        openedAt,
        closedAt,
        Object.hashAll(items),
      );
}

bool _listEquals<T>(List<T>? a, List<T>? b) {
  if (identical(a, b)) return true;
  if (a == null || b == null) return a == b;
  if (a.length != b.length) return false;
  for (int i = 0; i < a.length; i++) {
    if (a[i] != b[i]) return false;
  }
  return true;
}