public static int GetNumberOfLines(AchFile file)
{
var lines = 1; // file header
foreach (var batch in file.Batches)
{
lines += 2; // batch header + control
lines += batch.Entries.Count;
}
lines += 1; // file control
return(lines);
}
internal FileControl(AchFile file)
{
BatchCount = file.Batches.Count;
EntryCount = file.Batches.Sum(batch => batch.Entries.Count);
TotalCredits = file.Batches.Sum(batch => batch.Control.TotalCredits);
NumberOfCredits = file.Batches.Sum(batch => batch.Control.NumberOfCredits);
TotalDebits = file.Batches.Sum(batch => batch.Control.TotalDebits);
NumberOfDebits = file.Batches.Sum(batch => batch.Control.NumberOfDebits);
BlockCount = (int)Math.Ceiling(AchFile.GetNumberOfLines(file) / 10m);
EntryHash = CalculateEntryHash(file);
}
public static string CalculateEntryHash(AchFile file)
{
var sum = file.Batches.SelectMany(batch => batch.Entries)
.Select(entry => entry.ReceivingDfiIdentification)
.Select(routingNumber => routingNumber.Substring(0, 8))
.Select(decimal.Parse)
.Sum();
//IF THE SUM OF THE RDFI TRANSIT ROUTING NUMBERS IS A
//NUMBER GREATER THAN TEN DIGITS, REMOVE OR DROP THE
//NUMBER OF DIGITS FROM THE LEFT SIDE OF THE NUMBER
//UNTIL ONLY TEN DIGITS REMAIN. FOR EXAMPLE, IF THE SUM
//OF THE TRANSIT ROUTING NUMBERS IS 234567898765,
//REMOVE THE “23” FOR A HASH OF 4567898765.
var last10 = sum % 10000000000;
return(last10.ToString(CultureInfo.InvariantCulture));
}
