iranian sheba bank validation javascript | اعتبار سنجی کد شبا با جاوا اسکریپت

sheba.js

function iso7064Mod97_10(iban) {
  var remainder = iban,
      block;

  while (remainder.length > 2){
    block = remainder.slice(0, 9);
    remainder = parseInt(block, 10) % 97 + remainder.slice(block.length);
  }

  return parseInt(remainder, 10) % 97;
}

function validateIranianSheba(str) {
  var pattern = /IR[0-9]{24}/;
  
  if (str.length !== 26) {
    return false;
  }

  if (!pattern.test(str)) {
    return false;
  }

  var newStr = str.substr(4);
  var d1 = str.charCodeAt(0) - 65 + 10;
  var d2 = str.charCodeAt(1) - 65 + 10;
  newStr += d1.toString() + d2.toString() + str.substr(2, 2);
  
  var remainder = iso7064Mod97_10(newStr);
  if (remainder !== 1) {
    return false;
  }

  return true;
};

console.log(validateIranianSheba('ENTER SHEBA NUMBER HERE IT\'SRETURN TRUE OR FALSE'));

here is the python version

import re

def iso7064_mod97_10(iban_numeric: str) -> int:
    while len(iban_numeric) > 2:
        block = iban_numeric[:9]
        iban_numeric = str(int(block) % 97) + iban_numeric[len(block):]
    return int(iban_numeric) % 97

def validate_iranian_sheba(sheba: str) -> bool:
    if not re.fullmatch(r'IR\d{24}', sheba):
        return False

    rearranged = sheba[4:] + str(ord(sheba[0]) - 55) + str(ord(sheba[1]) - 55) + sheba[2:4]
    return iso7064_mod97_10(rearranged) == 1

# Example usage
if __name__ == "__main__":
    test_sheba1 = "IR820540102680020817909002"
    test_sheba2 = "IR320540102680020817909002"
    print("Correct Sheba:", validate_iranian_sheba(test_sheba1))
    print("Wrong Sheba:", validate_iranian_sheba(test_sheba2))