| | | 1 | | using System.Text.RegularExpressions; |
| | | 2 | | using MechanicsSoftware.Domain.Enums; |
| | | 3 | | using MechanicsSoftware.Domain.Exceptions; |
| | | 4 | | |
| | | 5 | | namespace MechanicsSoftware.Domain.ValueObjects; |
| | | 6 | | |
| | | 7 | | public sealed partial class TaxId : ValueObject |
| | | 8 | | { |
| | | 9 | | [GeneratedRegex("[^0-9]")] |
| | | 10 | | private static partial Regex NonDigits(); |
| | | 11 | | |
| | | 12 | | public string Value { get; init; } = null!; |
| | | 13 | | public PersonType PersonType { get; init; } |
| | | 14 | | |
| | 0 | 15 | | private TaxId() { } // required for EF Core materialization |
| | | 16 | | |
| | 116 | 17 | | public TaxId(string input, PersonType personType) |
| | 116 | 18 | | { |
| | 116 | 19 | | var digits = OnlyDigits(input); |
| | 116 | 20 | | PersonType = personType; |
| | | 21 | | |
| | 116 | 22 | | if (personType == PersonType.INDIVIDUAL) |
| | 106 | 23 | | { |
| | 106 | 24 | | if (!IsValidCpf(digits)) |
| | 8 | 25 | | throw new DomainException("Invalid CPF."); |
| | 98 | 26 | | } |
| | | 27 | | else |
| | 10 | 28 | | { |
| | 10 | 29 | | if (!IsValidCnpj(digits)) |
| | 6 | 30 | | throw new DomainException("Invalid CNPJ."); |
| | 4 | 31 | | } |
| | | 32 | | |
| | 102 | 33 | | Value = digits; |
| | 102 | 34 | | } |
| | 116 | 35 | | private static string OnlyDigits(string input) => NonDigits().Replace(input, ""); |
| | | 36 | | |
| | | 37 | | // ================= CPF ================= |
| | | 38 | | private static bool IsValidCpf(string cpf) |
| | 106 | 39 | | { |
| | 106 | 40 | | if (cpf.Length != 11) |
| | 2 | 41 | | return false; |
| | | 42 | | |
| | 104 | 43 | | if (AllDigitsEqual(cpf)) |
| | 4 | 44 | | return false; |
| | | 45 | | |
| | 100 | 46 | | var firstDigit = CalculateCpfDigit(cpf[..9], 10); |
| | 100 | 47 | | var secondDigit = CalculateCpfDigit(cpf[..10], 11); |
| | | 48 | | |
| | 100 | 49 | | return cpf.EndsWith($"{firstDigit}{secondDigit}", StringComparison.Ordinal); |
| | 106 | 50 | | } |
| | | 51 | | |
| | | 52 | | private static int CalculateCpfDigit(string baseDigits, int weightStart) |
| | 200 | 53 | | { |
| | 200 | 54 | | var sum = 0; |
| | | 55 | | |
| | 4200 | 56 | | for (int i = 0; i < baseDigits.Length; i++) |
| | 1900 | 57 | | { |
| | 1900 | 58 | | sum += (baseDigits[i] - '0') * (weightStart - i); |
| | 1900 | 59 | | } |
| | | 60 | | |
| | 200 | 61 | | var remainder = sum % 11; |
| | 200 | 62 | | return remainder < 2 ? 0 : 11 - remainder; |
| | 200 | 63 | | } |
| | | 64 | | |
| | | 65 | | // ================= CNPJ ================= |
| | | 66 | | private static bool IsValidCnpj(string cnpj) |
| | 10 | 67 | | { |
| | 10 | 68 | | if (cnpj.Length != 14) |
| | 2 | 69 | | return false; |
| | | 70 | | |
| | 8 | 71 | | if (AllDigitsEqual(cnpj)) |
| | 2 | 72 | | return false; |
| | | 73 | | |
| | 6 | 74 | | var firstDigit = CalculateCnpjDigit(cnpj[..12]); |
| | 6 | 75 | | var secondDigit = CalculateCnpjDigit(cnpj[..12] + firstDigit); |
| | | 76 | | |
| | 6 | 77 | | return cnpj.EndsWith($"{firstDigit}{secondDigit}", StringComparison.Ordinal); |
| | 10 | 78 | | } |
| | | 79 | | |
| | | 80 | | private static int CalculateCnpjDigit(string baseDigits) |
| | 12 | 81 | | { |
| | 12 | 82 | | int[] weights = baseDigits.Length == 12 |
| | 12 | 83 | | ? new[] { 5, 4, 3, 2, 9, 8, 7, 6, 5, 4, 3, 2 } |
| | 12 | 84 | | : new[] { 6, 5, 4, 3, 2, 9, 8, 7, 6, 5, 4, 3, 2 }; |
| | | 85 | | |
| | 12 | 86 | | var sum = 0; |
| | | 87 | | |
| | 324 | 88 | | for (int i = 0; i < weights.Length; i++) |
| | 150 | 89 | | { |
| | 150 | 90 | | sum += (baseDigits[i] - '0') * weights[i]; |
| | 150 | 91 | | } |
| | | 92 | | |
| | 12 | 93 | | var remainder = sum % 11; |
| | 12 | 94 | | return remainder < 2 ? 0 : 11 - remainder; |
| | 12 | 95 | | } |
| | | 96 | | |
| | | 97 | | private static bool AllDigitsEqual(string value) |
| | 112 | 98 | | { |
| | 112 | 99 | | return value.All(c => c == value[0]); |
| | 112 | 100 | | } |
| | | 101 | | |
| | | 102 | | protected override IEnumerable<object?> GetEqualityComponents() |
| | 12 | 103 | | { |
| | 12 | 104 | | yield return Value; |
| | 8 | 105 | | yield return PersonType; |
| | 8 | 106 | | } |
| | | 107 | | |
| | | 108 | | public override string ToString() |
| | 2 | 109 | | { |
| | 2 | 110 | | return Value; |
| | 2 | 111 | | } |
| | | 112 | | } |