public async Task <ActionResult <CreditCardItem> > PostCreditCardItem(CreditCardItem creditCardItem)
{
_logger.LogInformation("Create credit card info");
if (!ModelState.IsValid)
{
_logger.LogDebug("Invalid data.");
return(BadRequest("Invalid data."));
}
_context.CreditCardItems.Add(creditCardItem);
await _context.SaveChangesAsync();
return(NoContent());
}
private (bool isValid, string cardType) ValidateRule(CreditCardItem item)
{
String cardType = "";
int CardNoLength = 0;
int firstDigitCardNo = 0;
bool result = false;
int expiryYear;
CardNoLength = item.CARD_NO.ToString().Length;
firstDigitCardNo = Int32.Parse(item.CARD_NO.ToString().Substring(0, 1));
expiryYear = Int32.Parse(item.EXPIRE_DATE.ToString().Substring(2, 4));
//get card type
if (CardNoLength == 15 && firstDigitCardNo == 3)
{
cardType = "Amex";
result = true;
}
if (CardNoLength == 16)
{
if (firstDigitCardNo == 3)
{
cardType = "JCB";
result = true;
}
if (firstDigitCardNo == 4)
{
cardType = "Visa";
result = ValidateVisa(expiryYear);
}
if (firstDigitCardNo == 5)
{
cardType = "MasterCard";
result = ValidateMasterCard(expiryYear);
}
if (firstDigitCardNo != 3 && firstDigitCardNo != 4 && firstDigitCardNo != 5)
{
cardType = "UnKnown";
}
}
return(result, cardType);
}
private (bool validateresult, string errmsg) Validate(CreditCardItem item)
{
String errormsg = "";
int CardNoLength = 0;
int expiryYear;
int expiryMonth;
CardNoLength = item.CARD_NO.ToString().Length;
expiryMonth = Int32.Parse(item.EXPIRE_DATE.ToString().Substring(0, 2));
expiryYear = Int32.Parse(item.EXPIRE_DATE.ToString().Substring(2, 4));
//validate length 15 or 16 digit
if (CardNoLength != 15 && CardNoLength != 16)
{
errormsg = "Invalid credit card no";
return(false, errormsg);
}
//validate expiry date format
if (item.EXPIRE_DATE.ToString().Length != 6)
{
errormsg = "Invalid expiry date";
return(false, errormsg);
}
DateTime now = DateTime.Now;
//check expiry month is valid
if (expiryYear < now.Year)
{
errormsg = "Invalid expiry date";
return(false, errormsg);
}
//check expiry month is valid
if (expiryMonth < 0 || expiryMonth > 12)
{
errormsg = "Invalid expiry date";
return(false, errormsg);
}
return(true, "");
}
public async Task <IActionResult> PutCreditCardItem(int id, CreditCardItem creditCardItem)
{
_logger.LogInformation($"Modify credit card info for id: {id}");
if (!ModelState.IsValid)
{
_logger.LogDebug("Invalid data.");
return(BadRequest("Invalid data."));
}
if (id != creditCardItem.Id)
{
return(BadRequest());
}
_context.Entry(creditCardItem).State = EntityState.Modified;
try
{
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!CreditCardItemExists(id))
{
_logger.LogDebug($"Can't find credit card info for id : {id}");
return(NotFound());
}
else
{
throw;
}
}
return(NoContent());
}
public IActionResult CheckCreditCard(CreditCardItem item)
{
var result = Validate(item);
bool checkDBresult = true;
string returnResult = "";
if (result.validateresult)
{
var ValidateRuleResult = ValidateRule(item);
if (!ValidateRuleResult.isValid)
{
returnResult = "Invalid";
}
//validate is true
//set card_type to item
if (ValidateRuleResult.cardType != "Unknown")
{
item.CARD_TYPE = ValidateRuleResult.cardType;
//check data at DB
checkDBresult = _context.checkCreditCardOnDB(item);
if (!checkDBresult)
{
returnResult = "Does not exist";
}
else
{
returnResult = "Valid";
}
}
}
else
{
return(BadRequest(returnResult));
}
return(Ok(new { result = returnResult, cardType = item.CARD_TYPE }));
}