/// <summary>
/// בדיקת מס' כרטיס אשראי כולל ישראכארד
/// http://halemo.net/info/isracard/index.html
/// </summary>
/// <param name="creditCard">מס' כרטיס האשראי</param>
/// <param name="isIsraCard">האם כרטיס אשראי ישראכארד</param>
/// <param name="notEmpty">האם חייב להיות מלא</param>
/// <returns>תקין/שגוי</returns>
public static ErrorStatus CheckCreditCardNumber(string creditCard, CreditCardCompanies company, bool notEmpty)
{
ErrorStatus status = ErrorStatus.NONE;
if (company != CreditCardCompanies.ISRACARD)
{
status = CheckCreditCardNumber(creditCard, notEmpty);
if (status == ErrorStatus.NONE)
{
string cc = JustDigits(creditCard);
switch (company)
{
case CreditCardCompanies.AMERICANEXPRESS:
{
if (cc.Length != 15 || !(new List <string> {
"24", "37"
}).Contains(cc.Substring(0, 2)))
{
status = ErrorStatus.ERROR;
}
break;
}
case CreditCardCompanies.DINERS:
{
if (cc.Length != 14 || !(new List <string> {
"30", "36", "38"
}).Contains(cc.Substring(0, 2)))
{
status = ErrorStatus.ERROR;
}
break;
}
case CreditCardCompanies.MASTERCARD:
{
if (cc.Length != 16 || !(new List <string> {
"51", "52", "53", "54", "55"
}).Contains(cc.Substring(0, 2)))
{
status = ErrorStatus.ERROR;
}
break;
}
case CreditCardCompanies.VISA:
case CreditCardCompanies.VISA_LEUMI:
{
if (cc.Length != 16 || cc[0] != '4')
{
status = ErrorStatus.ERROR;
}
break;
}
default:
{
break;
}
}
}
}
else
{
string cc = JustDigits(creditCard);
if (cc.Length < 8 || cc.Length > 9)
{
status = ErrorStatus.ERROR;
}
else
{
if (cc.Length == 8)
{
cc = "0" + creditCard;
}
int multiplier = 1;
int sumOfDigits = 0;
for (int i = cc.Length - 1; i >= 0; i--)
{
sumOfDigits += (cc[i] - '0') * multiplier++;
}
status = (sumOfDigits % 11 == 0) ? ErrorStatus.NONE : ErrorStatus.ERROR;
}
}
return(status);
}
private void DetermineCompany(string cardNumber)
{
var visaRgx = new Regex(VisaPattern, RegexOptions.IgnoreCase);
var matches = visaRgx.Matches(cardNumber);
if (matches.Count > 0)
{
if (_visaElectronFirstNumbers.Any(x => cardNumber.StartsWith(x)) &&
cardNumber.Count() == 16)
{
var id = CreditCardCompanies.Find(x => x.Display == VisaElectron).Id;
if (id != null)
{
CreditCardType = (int)id;
}
}
else
{
var id = CreditCardCompanies.Find(x => x.Display == Visa).Id;
if (id != null)
{
CreditCardType = (int)id;
}
}
}
else
{
var masterRgx = new Regex(MasterPattern, RegexOptions.IgnoreCase);
matches = masterRgx.Matches(cardNumber);
if (matches.Count > 0)
{
var id = CreditCardCompanies.Find(x => x.Display == MasterCard).Id;
if (id != null)
{
CreditCardType = (int)id;
}
}
else
{
var amexRgx = new Regex(AmexPattern, RegexOptions.IgnoreCase);
matches = amexRgx.Matches(cardNumber);
if (matches.Count > 0)
{
var id = CreditCardCompanies.Find(x => x.Display == Amex).Id;
if (id != null)
{
CreditCardType = (int)id;
}
}
else
{
var discoverRgx = new Regex(DiscoverPattern, RegexOptions.IgnoreCase);
matches = discoverRgx.Matches(cardNumber);
if (matches.Count > 0)
{
var id = CreditCardCompanies.Find(x => x.Display == Discover).Id;
if (id != null)
{
CreditCardType = (int)id;
}
}
else
{
var i = CreditCardCompanies.Find(x => x.Display == CreditCardGeneric).Id;
if (i != null)
{
CreditCardType = (int)i;
}
}
}
}
}
}
