import { randomInt, randomUUID } from 'crypto';

/** Generate a string of `n` random digits (first digit never 0). */
function randomDigits(n: number): string {
  if (n <= 0) return '0';
  let s = String(randomInt(1, 10)); // first digit 1–9
  for (let i = 1; i < n; i++) s += String(randomInt(0, 10));
  return s;
}

/** Build a fresh mock object every time it's called */
export function buildCreateApplicationMock() {
  const now = new Date().toISOString();

  return {
    ResponseHeader: {
      Version: '1.0.0',
      MsgUid: randomUUID(),
      Source: 'ZOD',
      ServiceId: 'CreateNewApplication',
      ReqDateTime: now,
      RspDateTime: now,
      ResponseCode: '000',
      ResponseType: 'Success',
      ProcessingTime: 1665,
      EncryptionKey: null,
      ResponseDescription: 'Operation Successful',
      LocalizedResponseDescription: null,
      CustomerSpecificResponseDescriptionList: null,
      HeaderUserDataList: null,
    },

    CreateNewApplicationResponseDetails: {
      InstitutionCode: '1100',
      ApplicationTypeDetails: {
        TypeCode: '01',
        Description: 'Normal Primary',
        Additional: false,
        Corporate: false,
        UserData: null,
      },
      ApplicationDetails: {
        cif: null,
        ApplicationNumber: '3300000000073',
        ExternalApplicationNumber: '3',
        ApplicationStatus: '04',
        Organization: 0,
        Product: '1101',
        ApplicatonDate: '2025-05-29',
        ApplicationSource: 'O',
        SalesSource: null,
        DeliveryMethod: 'V',
        ProgramCode: null,
        Campaign: null,
        Plastic: null,
        Design: null,
        ProcessStage: '99',
        ProcessStageStatus: 'S',
        Score: null,
        ExternalScore: null,
        RequestedLimit: 0,
        SuggestedLimit: null,
        AssignedLimit: 0,
        AllowedLimitList: null,
        EligibilityCheckResult: '00',
        EligibilityCheckDescription: null,
        Title: 'Mr.',
        FirstName: 'Abdalhamid',
        SecondName: null,
        ThirdName: null,
        LastName: ' Ahmad',
        FullName: 'Abdalhamid Ahmad',
        EmbossName: 'ABDALHAMID AHMAD',
        PlaceOfBirth: null,
        DateOfBirth: '1999-01-07',
        LocalizedDateOfBirth: '1999-01-07',
        Age: 26,
        Gender: 'M',
        Married: 'U',
        Nationality: '682',
        IdType: '01',
        IdNumber: '1089055972',
        IdExpiryDate: '2031-09-17',
        EducationLevel: null,
        ProfessionCode: 0,
        NumberOfDependents: 0,
        EmployerName: 'N/A',
        EmploymentYears: 0,
        EmploymentMonths: 0,
        CIF: null,
        BankAccountNumber: ' ',
        Currency: { CurrCode: '682', AlphaCode: 'SAR' },
        CreditAccountNumber: '6000000000000000',
        AccountType: '30',
        Income: 0,
        AdditionalIncome: 0,
        TotalIncome: 0,
        CurrentBalance: 0,
        AverageBalance: 0,
        AssetsBalance: 0,
        InsuranceBalance: 0,
        DepositAmount: 0,
        GuarenteeAccountNumber: null,
        GuarenteeAmount: 0,
        InstalmentAmount: 0,
        AutoDebit: 'N',
        PaymentMethod: '2',
        BillingCycle: 'C1',
        MaximumDelinquency: null,
        CreditBureauDecision: null,
        ECommerce: 'N',
        NumberOfCards: 0,
        SocialCode: '000',
        JobGrade: 0,
        Flags: Array.from({ length: 64 }, (_, i) => ({
          Position: i + 1,
          Value: '0',
        })),
        CheckFlags: Array.from({ length: 64 }, (_, i) => ({
          Position: i + 1,
          Value: '0',
        })),
      },

      ApplicationStatusDetails: {
        StatusCode: '04',
        Description: 'Approved',
        Canceled: false,
      },

      CustomerDetails: {
        Id: 115158,
        CustomerCode: '100000024619',
        IdNumber: ' ',
        TypeId: 0,
        PreferredLanguage: 'EN',
        ExternalCustomerCode: null,
        Title: ' ',
        FirstName: ' ',
        LastName: ' ',
        DateOfBirth: null,
        UserData1: '2031-09-17',
        UserData2: '01',
        UserData3: null,
        UserData4: '682',
        CustomerSegment: null,
        Gender: 'U',
        Married: 'U',
      },

      AccountDetailsList: [
        {
          Id: randomDigits(5),
          InstitutionCode: '1100',
          AccountNumber: randomDigits(16),
          Currency: { CurrCode: '682', AlphaCode: 'SAR' },
          AccountTypeCode: '30',
          ClassId: '2',
          AccountStatus: '00',
          VipFlag: '0',
          BlockedAmount: 0,
          AvailableBalance: 0,
          UserData1: 'D36407C9AE4C28D2185',
          UserData3: 'D36407C9AE4C28D2185',
          UserData5: `SA${randomDigits(22)}`,
        },
      ],

      CardDetailsList: [
        {
          pvv: null,
          ResponseCardIdentifier: {
            Id: randomDigits(5),
            Pan: 'DDDDDDDDDDDDDDDDDDD',
            MaskedPan: '999999_9999',
            VPan: randomDigits(16),
            Seqno: 0,
          },
          ExpiryDate: '2031-09-30',
          EffectiveDate: '2025-06-02',
          CardStatus: '30',
          EmbossingName: 'ABDALHAMID AHMAD',
          Title: 'Mr.',
          FirstName: 'Abdalhamid',
          LastName: ' Ahmad',
          BatchNumber: 8849,
          ServiceCode: '226',
          DateOfBirth: '1999-01-07',
          LastStatusChangeDate: '2025-06-03',
          PinStatus: '40',
          OldPinStatus: '0',
          CustomerIdNumber: '1089055972',
          Language: 0,
        },
      ],
    },
  };
}