merchantCriteria property

MerchantCriteria get merchantCriteria

Retrieves the Merchant Criteria (MC) from the QR code data.

The Merchant Criteria is used to identify the type of transaction or payment method. There are two main cases for retrieving the merchant criteria:

• For Payment Credit with Inquiry MPAN, the value is taken from the inquiry MPAN response.
• For Payment Credit without Inquiry MPAN, the value is taken from the QR data tag 26 to 45, specifically sub-tag 03.

The function will check the merchant_criteria field in the following tags:

• Tag 26
• Tag 27
• Tag 50
• Tag 51

If the merchant_criteria is found, it will be converted to a MerchantCriteria enum value. If no valid merchant_criteria is found, it will default to MerchantCriteria.regular.

Returns:

• A MerchantCriteria enum value based on the retrieved criteria. If no criteria is found, it returns MerchantCriteria.regular as the default.

Example:

MerchantCriteria criteria = QRISMPM(qrData).merchant.merchantCriteria;
print(criteria); // MerchantCriteria.regular or another value depending on the QR data

Implementation

MerchantCriteria get merchantCriteria {
  for (var tagId in _baseTagIds) {
    var merchantData = _raw['merchant_information_$tagId'];
    if (merchantData != null && merchantData['merchant_criteria'] != null) {
      String criteria = merchantData['merchant_criteria'];
      return criteria.toMerchantCriteria;
    }
  }

  return MerchantCriteria.regular;
}