/// <summary>
/// Generates a random valid nif / tax number
/// </summary>
/// <returns></returns>
public static string GenerateNIF()
{
NIFType randdomType = NIFType.PessoaSingular;
var values = Enum.GetValues(typeof(NIFType));
int rPosition = rand.Next(0, values.Length - 1);
randdomType = (NIFType)values.GetValue(rPosition);
return(GenerateNIF(randdomType));
}
/// <summary>
/// Generates a random valid nif / tax number of a specific type
/// </summary>
/// <param name="t">the type of nif to be generated</param>
/// <returns></returns>
public static string GenerateNIF(NIFType t)
{
string number = string.Empty;
string checkDigit = string.Empty;
// RANDOM NUMBER GENERATION
switch (t)
{
case NIFType.PessoaSingular: number = "1" + StringGenerator.GetNumeric(7); break;
case NIFType.PessoaSingularEstrangeiro: number = "45" + StringGenerator.GetNumeric(6); break;
case NIFType.PessoaColectiva: number = "5" + StringGenerator.GetNumeric(7); break;
case NIFType.AdministracaoPublica: number = "6" + StringGenerator.GetNumeric(7); break;
case NIFType.HerancaIndivisa: number = "70" + StringGenerator.GetNumeric(6); break;
case NIFType.NaoResidentesColectivos: number = "71" + StringGenerator.GetNumeric(6); break;
case NIFType.FundosDeInvestimento: number = "72" + StringGenerator.GetNumeric(6); break;
case NIFType.AtribuicaoOficiosaSujeitoPassivo: number = "77" + StringGenerator.GetNumeric(6); break;
case NIFType.AtribuicaoOficiosaNaoResidentes: number = "78" + StringGenerator.GetNumeric(6); break;
case NIFType.RegimeExcepcional: number = "79" + StringGenerator.GetNumeric(6); break;
case NIFType.EmpresarioEmNomeIndividual: number = "8" + StringGenerator.GetNumeric(7); break;
case NIFType.Condominios: number = "90" + StringGenerator.GetNumeric(6); break;
case NIFType.NaoResidentes: number = "98" + StringGenerator.GetNumeric(6); break;
case NIFType.SemPersonalidadeJuridica: number = "99" + StringGenerator.GetNumeric(6); break;
default: number = "1" + StringGenerator.GetNumeric(7); break;
}
// CHECK DIGIT
byte[] multiplyValues = new byte[] { 9, 8, 7, 6, 5, 4, 3, 2 };
int Total = 0;
for (int i = 0; i < number.Length; i++)
{
byte b = byte.Parse(number[i].ToString());
int multiplyResult = b * multiplyValues[i];
Total += multiplyResult;
}
int resto = Total % 11;
if (resto == 0 || resto == 1)
{
checkDigit = "0";
}
else
{
checkDigit = (11 - resto).ToString();
}
return($"{number}{checkDigit}");
}
