Verificador de cedula de identidad (CI) uruguaya. Angular validator.

IdentificationValidator.cs

namespace Helpers
{
    #region --- Usings ---

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;

    #endregion


    public static class IdentificationValidator
    {
         public static bool IsUruguayanFormat(string identification)
        {
            try
            {
                if (string.IsNullOrWhiteSpace(identification) || identification.Length != 8 || !int.TryParse(identification, out int identificationNumber))
                    return false;

                int[] arrayCI = identification
                                .Select(x => int.TryParse(x.ToString(), out int y) ? y : -1)
                                .ToArray();

                int[] arrayRef = "2987634"
                                    .Select(x => int.TryParse(x.ToString(), out int y) ? y : -1)
                                    .ToArray();
                int inputVerificationNumber = arrayCI[7];

                int verificationNumberRaw = 0;
                for (int i = 0; i < arrayRef.Length; i++) {
                    verificationNumberRaw = verificationNumberRaw + arrayCI[i] * arrayRef[i];
                }

                int calculatedVerificationNumber = 10 - (verificationNumberRaw % 10);
                if (calculatedVerificationNumber != inputVerificationNumber) {
                    return false;
                }

                return true;
            }
            catch (Exception ex)
            {
                return false;
            }
        }
    }
}

uruguayan-identification.validator.ts

import { FormControl } from '@angular/forms';

export function uruguayanIdentificationValidator(control: FormControl): { [uruguayanIdentification: string]: boolean }  {
  const identification = control.value;

  const invalidReturn = { uruguayanIdentification: true };

  if (!identification || identification.length !== 8 || isNaN(identification)) {
    return invalidReturn;
  }

  const arrayCI: number[] = (<string>identification).split('').map(x => +x);
  const arrayRef: number[] = '2987634'.split('').map(x => +x);
  const inputVerificationNumber: number = arrayCI[7];

  let verificationNumberRaw = 0;
  for (let i = 0; i < arrayRef.length; i++) {
    verificationNumberRaw = verificationNumberRaw + arrayCI[i] * arrayRef[i];
  }

  const calculatedVerificationNumber: number = 10 - (verificationNumberRaw % 10);
  if (calculatedVerificationNumber !== inputVerificationNumber) {
    return invalidReturn;
  }

  return null;
}