registerSales method

Future<void> registerSales({ required String productName, required int taxCode, required double price, double? quantity, DiscountType? discountType, double? discountValue, required int department, String? unit, })

Implementation

Future<void> registerSales({
  required String productName,
  required int taxCode,
  required double price,
  double? quantity,
  DiscountType? discountType,
  double? discountValue,
  required int department,
  String? unit,
}) async {
  assert(productName.isNotEmpty, 'Product name must not be empty');
  assert(
    taxCode >= 1 && taxCode <= 8,
    'taxCode must be in range 1..8 (vat group A-H)',
  );
  assert(price > 0, 'Price must be greater than 0');
  assert(
    quantity == null || quantity > 0,
    'Quantity must be greater than 0 or null',
  );
  assert(
    discountValue == null || discountValue >= 0,
    'discountValue must be greater than or equal to 0',
  );
  assert(
    department >= 0 && department <= 99,
    'department must be in range 0..99. 0 is for no department',
  );
  assert(
    unit == null || unit.length <= 6 && unit.isNotEmpty,
    'unit must be 6 characters or less and not empty',
  );
  final message = await execute(
    Commands.registrationOfSale.code,
    data: [
      productName,
      taxCode,
      price,
      quantity?.cleanDouble(),
      discountType?.index,
      discountValue?.cleanDouble(),
      department,
      if (unit != null) unit,
    ].toCommand(),
  );
  final [$e, ...rest] = message.data.response;
  final error = int.tryParse($e) ?? 0;

  if (error != 0) {
    throw FiscalCodeException('Error register sales', error);
  }
}