private ICollection<PaymentBundle> CreateBundles(AlphaFileHeader header, List<AlphaPaymentRecord> records)
{
return new List<PaymentBundle>
{
new PaymentBundle(header.AccountNumber, header.PaymentDate, header.Currency,
records.Select(record => new PaymentRecord(record.Amount, record.Reference)))
};
}
private void ValidateContents(AlphaFileHeader header, List<AlphaPaymentRecord> records)
{
if (header.Quantity != records.Count)
throw new InconsistentFileContentsException($"Incorrect quantity of payments in file. Expected {header.Quantity} but file contained {records.Count}. File provided by {RawPaymentProvider}");
var sumOfRecords = records.Count > 0 ? records.Sum(r => r.Amount) : 0;
if (sumOfRecords != header.Amount)
throw new InconsistentFileContentsException($"Incorrect total payment amount in file. Expected {header.Amount} but file contained {sumOfRecords}. File provided by {RawPaymentProvider}");
}
private AlphaFileHeader ReadHeader()
{
if(!RawPaymentProvider.HasMoreRecords)
throw new BadFileFormatException($"Could not locate header in alpha payment file provided from {RawPaymentProvider}");
var rawHeader = RawPaymentProvider.ReadNextRecord();
var result = new AlphaFileHeader(rawHeader);
return result;
}
