public async Task <ValidIdentityNumber> AddAsync(ValidIdentityNumber validIdentityNumber)
{
using (var file = File.Open(Path.Combine(FileDirectory, FileName), FileMode.Append))
using (var streamWriter = new StreamWriter(file))
using (var csvWriter = new CsvWriter(streamWriter))
{
csvWriter.Configuration.RegisterClassMap <ValidIdentityNumberMap>();
csvWriter.WriteRecord(validIdentityNumber);
csvWriter.NextRecord();
return(await Task.FromResult(validIdentityNumber));
}
}
public async Task <Tuple <IEnumerable <ValidIdentityNumber>, IEnumerable <InvalidIdentityNumber> > > ValidateAsync(
List <string> identityNumbers)
{
Validate(identityNumbers);
var validIdentityNumbers = new List <ValidIdentityNumber>();
var invalidIdentityNumbers = new List <InvalidIdentityNumber>();
var tasks = new ConcurrentBag <string>(identityNumbers).Select(async identityNumber =>
{
if (string.IsNullOrWhiteSpace(identityNumber))
{
return;
}
var reasonsFailed = new List <string>();
if (!long.TryParse(identityNumber, out var longIdentityNumber))
{
reasonsFailed.Add("Identity Number has invalid format.");
}
if (identityNumber.Trim().Length != 13)
{
reasonsFailed.Add("Identity Number has incorrect length.");
}
if (reasonsFailed.Any())
{
var invalidIdentityNumber = new InvalidIdentityNumber
{
IdentityNumber = identityNumber,
ReasonsFailed = string.Join(" | ", reasonsFailed)
};
await _invalidIdentityNumberRepository.AddAsync(invalidIdentityNumber);
invalidIdentityNumbers.Add(invalidIdentityNumber);
return;
}
int.TryParse(identityNumber.Substring(0, 2), out var twoDigitYear);
int.TryParse(identityNumber.Substring(2, 2), out var month);
int.TryParse(identityNumber.Substring(4, 2), out var day);
var fourDigitYear = CultureInfo.CurrentCulture.Calendar.ToFourDigitYear(twoDigitYear);
var birthDate = new DateTime(fourDigitYear, month, day);
if (birthDate.Year <= 0)
{
reasonsFailed.Add("Year of birth is invalid");
}
if (birthDate.Month <= 0)
{
reasonsFailed.Add("Month of birth is invalid");
}
if (birthDate.Day <= 0)
{
reasonsFailed.Add("Day of birth is invalid");
}
int.TryParse(identityNumber.Substring(6, 4), out var gender);
int.TryParse(identityNumber.Substring(10, 1), out var citizenship);
if (!identityNumber.ToString().LuhnCheck())
{
reasonsFailed.Add("Identity number check is invalid");
}
if (reasonsFailed.Any())
{
var invalidIdentityNumber = new InvalidIdentityNumber
{
IdentityNumber = identityNumber,
ReasonsFailed = string.Join(" | ", reasonsFailed)
};
await _invalidIdentityNumberRepository.AddAsync(invalidIdentityNumber);
invalidIdentityNumbers.Add(invalidIdentityNumber);
return;
}
var validIdentityNumber = new ValidIdentityNumber
{
IdentityNumber = longIdentityNumber,
BirthDate = birthDate,
Gender = gender < 4999 ? "Female" : "Male",
Citizenship = citizenship == 0 ? "SA Citizen" : "Permanent Resident"
};
await _validIdentityNumberRepository.AddAsync(validIdentityNumber);
validIdentityNumbers.Add(validIdentityNumber);
});
await Task.WhenAll(tasks);
return(new Tuple <IEnumerable <ValidIdentityNumber>, IEnumerable <InvalidIdentityNumber> >(validIdentityNumbers,
invalidIdentityNumbers));
}