private Tuple <string, IList <Merchant> > ParseMasterCardFile(Stream fileStream, MerchantFileType merchantFileType)
{
bool validFile = true;
string provisioningFileDate = null;
List <Merchant> lstMerchants = new List <Merchant>();
using (StreamReader streamReader = new StreamReader(fileStream))
{
int lineNumber = 0;
string currentLine = streamReader.ReadLine();
while (!string.IsNullOrWhiteSpace(currentLine) && validFile)
{
string recordType = currentLine.Substring(0, RecordLengthConstants.RecordType);
switch (recordType)
{
case HeaderRecord.RecordType:
Log.Info("Parsing the header record");
provisioningFileDate = HeaderRecord.Parse(currentLine, MerchantConstants.MasterCardRecordDelimiter);
validFile = !string.IsNullOrWhiteSpace(provisioningFileDate);
lineNumber++;
break;
case DetailRecord.ProvisioningRecordType:
Log.Info($"Parsing the {merchantFileType.ToString()} merchant detail record");
Merchant merchant = DetailRecord.Parse(currentLine, MerchantConstants.MasterCardRecordDelimiter, merchantFileType, lineNumber);
if (merchant != null)
{
lstMerchants.Add(merchant);
Log.Info($"Parsed the {merchantFileType.ToString()} in line number {lineNumber}");
}
lineNumber++;
break;
case DetailRecord.ResponseFileRecordType:
Log.Info($"Parsing the {merchantFileType.ToString()} merchant detail record");
merchant = DetailRecord.Parse(currentLine, MerchantConstants.MasterCardRecordDelimiter, merchantFileType, lineNumber);
if (merchant != null)
{
Merchant existingMerchant = null;
//Check if we have already seen this merchant in the current auth/clearing file based on MCID or MCSiteId
//If so, then update the payment info for the existing merchant. If not, add the
//new merchant to the list.
if (merchant.ExtendedAttributes != null && merchant.ExtendedAttributes.ContainsKey(MerchantConstants.MCID))
{
existingMerchant = lstMerchants.FirstOrDefault(m => (m.ExtendedAttributes != null && m.ExtendedAttributes.ContainsKey(MerchantConstants.MCID) &&
m.ExtendedAttributes[MerchantConstants.MCID] == merchant.ExtendedAttributes[MerchantConstants.MCID]));
}
else if (merchant.ExtendedAttributes != null && merchant.ExtendedAttributes.ContainsKey(MerchantConstants.MCSiteId))
{
existingMerchant = lstMerchants.FirstOrDefault(m => (m.ExtendedAttributes != null && m.ExtendedAttributes.ContainsKey(MerchantConstants.MCSiteId) &&
m.ExtendedAttributes[MerchantConstants.MCSiteId] == merchant.ExtendedAttributes[MerchantConstants.MCSiteId]));
}
if (existingMerchant != null)
{
existingMerchant.Payments.Add(merchant.Payments[0]);
}
else
{
lstMerchants.Add(merchant);
}
Log.Info($"Parsed the {merchantFileType.ToString()} in line number {lineNumber}");
}
lineNumber++;
break;
case TrailerRecord.RecordType:
Log.Info("Parsing the trailer record");
int detailRecordCount = TrailerRecord.Parse(currentLine, MerchantConstants.MasterCardRecordDelimiter);
//linenumber -2 = discarding the header record to get the total detailed records read
validFile = ((lineNumber - 1) == detailRecordCount);
break;
default:
Log.Error($"Unknown record type {recordType} in line number {lineNumber}");
lineNumber++;
break;
}
currentLine = streamReader.ReadLine();
}
}
return(validFile ? new Tuple <string, IList <Merchant> >(provisioningFileDate, lstMerchants) : null);
}