/// A confirmed shopping trip saved from a receipt.
library;

class Shop {
  const Shop({
    required this.id,
    required this.supermarket,
    required this.shoppedAt,
    required this.total,
    required this.itemCount,
    this.name,
    this.receiptImagePath,
    this.tags = const [],
  });

  final int id;
  final String supermarket;
  final String? name;
  final DateTime shoppedAt;
  final double total;
  final int itemCount;
  final String? receiptImagePath;
  final List<String> tags;

  String get displayName {
    final tripName = name?.trim();
    if (tripName != null && tripName.isNotEmpty) return tripName;
    return supermarket;
  }

  Shop copyWith({String? name, bool clearName = false, List<String>? tags}) {
    return Shop(
      id: id,
      supermarket: supermarket,
      shoppedAt: shoppedAt,
      total: total,
      itemCount: itemCount,
      receiptImagePath: receiptImagePath,
      name: clearName ? null : (name ?? this.name),
      tags: tags ?? this.tags,
    );
  }

  factory Shop.fromMap(Map<String, Object?> map) {
    final rawName = (map['name'] as String?)?.trim();
    return Shop(
      id: map['id']! as int,
      supermarket: map['supermarket']! as String,
      name: (rawName == null || rawName.isEmpty) ? null : rawName,
      shoppedAt: DateTime.parse(map['shopped_at']! as String),
      total: (map['total'] as num).toDouble(),
      itemCount: (map['item_count'] as num?)?.toInt() ?? 0,
      receiptImagePath: map['receipt_image_path'] as String?,
    );
  }
}

class ShopItem {
  const ShopItem({
    required this.id,
    required this.shopId,
    this.productId,
    required this.name,
    required this.price,
    this.quantity,
    this.unitPrice,
  });

  final int id;
  final int shopId;
  final int? productId;
  final String name;
  final double price;
  final int? quantity;
  final double? unitPrice;

  factory ShopItem.fromMap(Map<String, Object?> map) {
    return ShopItem(
      id: map['id']! as int,
      shopId: map['shop_id']! as int,
      productId: map['product_id'] as int?,
      name: map['name']! as String,
      price: (map['price'] as num).toDouble(),
      quantity: map['quantity'] as int?,
      unitPrice: (map['unit_price'] as num?)?.toDouble(),
    );
  }
}