/**
 * Subscription test fixtures with randomized personal data
 */

import { faker } from '@faker-js/faker';
import type {
  ProductCreateRequest,
  PricingPlanCreateRequest,
  SubscriptionCustomer,
  SubscriptionPaymentCard,
  SubscriptionAddress,
  SubscriptionInitializeRequest,
  SubscriptionCheckoutFormInitializeRequest,
} from '../../src/types';

/**
 * Generates a valid Turkish identity number (TC Kimlik No)
 */
function generateTurkishIdentityNumber(): string {
  const digits: number[] = [];

  // First digit cannot be 0
  digits.push(faker.number.int({ min: 1, max: 9 }));

  // Generate next 8 random digits
  for (let i = 1; i < 9; i++) {
    digits.push(faker.number.int({ min: 0, max: 9 }));
  }

  // Calculate 10th digit
  const oddSum = digits[0] + digits[2] + digits[4] + digits[6] + digits[8];
  const evenSum = digits[1] + digits[3] + digits[5] + digits[7];
  const digit10 = (oddSum * 7 - evenSum) % 10;
  digits.push(digit10 < 0 ? digit10 + 10 : digit10);

  // Calculate 11th digit
  const allSum = digits.reduce((sum, d) => sum + d, 0);
  digits.push(allSum % 10);

  return digits.join('');
}

/**
 * Generates a Turkish phone number in the format +905XXXXXXXXX
 */
function generateTurkishPhoneNumber(): string {
  const areaCode = faker.helpers.arrayElement(['530', '531', '532', '533', '534', '535', '536', '537', '538', '539', '540', '541', '542', '543', '544', '545', '546', '547', '548', '549', '550', '551', '552', '553', '554', '555', '556', '557', '558', '559']);
  const number = faker.string.numeric(7);
  return `+90${areaCode}${number}`;
}

/**
 * Generates a subscription billing address with randomized data
 */
export function createTestSubscriptionBillingAddress(): SubscriptionAddress {
  return {
    address: `${faker.location.streetAddress()}, ${faker.location.city()}`,
    zipCode: faker.location.zipCode('#####'),
    contactName: faker.person.fullName(),
    city: faker.location.city(),
    country: 'Turkey',
  };
}

/**
 * Generates a subscription shipping address with randomized data
 */
export function createTestSubscriptionShippingAddress(): SubscriptionAddress {
  return {
    address: `${faker.location.streetAddress()}, ${faker.location.city()}`,
    zipCode: faker.location.zipCode('#####'),
    contactName: faker.person.fullName(),
    city: faker.location.city(),
    country: 'Turkey',
  };
}

/**
 * Generates a subscription customer with randomized personal data
 */
export function createTestSubscriptionCustomer(): SubscriptionCustomer {
  const firstName = faker.person.firstName();
  const lastName = faker.person.lastName();

  return {
    name: firstName,
    surname: lastName,
    email: faker.internet.email({ firstName, lastName }).toLowerCase(),
    gsmNumber: generateTurkishPhoneNumber(),
    identityNumber: generateTurkishIdentityNumber(),
    billingAddress: createTestSubscriptionBillingAddress(),
    shippingAddress: createTestSubscriptionShippingAddress(),
  };
}

/**
 * Generates a subscription payment card with randomized holder name
 * Card number is fixed to iyzico sandbox test card
 */
export function createTestSubscriptionPaymentCard(): SubscriptionPaymentCard {
  return {
    cardHolderName: faker.person.fullName(),
    cardNumber: '5528790000000008', // iyzico sandbox test card
    expireMonth: '12',
    expireYear: '2030',
    cvc: '123',
  };
}

/**
 * Generates a product create request with unique name
 */
export function createTestProductCreateRequest(): ProductCreateRequest {
  return {
    locale: 'tr',
    name: `Test ${faker.string.alphanumeric(6)}`,
    description: faker.commerce.productDescription().substring(0,20),
  };
}

/**
 * Generates a pricing plan create request
 */
export function createTestPricingPlanCreateRequest(): PricingPlanCreateRequest {
  return {
    locale: 'tr',
    name: `Monthly Test Plan ${faker.string.alphanumeric(6)}`,
    price: 99.99,
    currencyCode: 'TRY',
    paymentInterval: 'MONTHLY',
    paymentIntervalCount: 1,
    trialPeriodDays: 7,
    planPaymentType: 'RECURRING',
    recurrenceCount: 12,
  };
}

/**
 * Generates a subscription initialize request with randomized data
 */
export function createTestSubscriptionInitializeRequest(pricingPlanReferenceCode: string = ''): SubscriptionInitializeRequest {
  return {
    locale: 'tr',
    pricingPlanReferenceCode,
    subscriptionInitialStatus: 'ACTIVE',
    customer: createTestSubscriptionCustomer(),
    paymentCard: createTestSubscriptionPaymentCard(),
  };
}

/**
 * Generates a subscription checkout form request with randomized data
 */
export function createTestSubscriptionCheckoutFormRequest(pricingPlanReferenceCode: string = ''): SubscriptionCheckoutFormInitializeRequest {
  return {
    locale: 'tr',
    callbackUrl: 'https://www.merchant.com/callback',
    pricingPlanReferenceCode,
    subscriptionInitialStatus: 'ACTIVE',
    customer: createTestSubscriptionCustomer(),
  };
}

/**
 * Generates a unique product name for testing
 */
export function generateTestProductName(): string {
  return `Test Product ${Date.now()}-${faker.string.alphanumeric(4)}`;
}

/**
 * Generates a unique pricing plan name for testing
 */
export function generateTestPlanName(): string {
  return `Test Plan ${Date.now()}-${faker.string.alphanumeric(4)}`;
}

/**
 * Generates a unique email for testing
 */
export function generateTestEmail(): string {
  return faker.internet.email().toLowerCase();
}

// Legacy exports for backward compatibility (static versions that generate once)
export const testSubscriptionBillingAddress = createTestSubscriptionBillingAddress();
export const testSubscriptionShippingAddress = createTestSubscriptionShippingAddress();
export const testSubscriptionCustomer = createTestSubscriptionCustomer();
export const testSubscriptionPaymentCard = createTestSubscriptionPaymentCard();
export const testProductCreateRequest = createTestProductCreateRequest();
export const testPricingPlanCreateRequest = createTestPricingPlanCreateRequest();
export const testSubscriptionInitializeRequest = createTestSubscriptionInitializeRequest();
export const testSubscriptionCheckoutFormRequest = createTestSubscriptionCheckoutFormRequest();