#!/usr/bin/env node
/**
 * Test Setup Intent Pattern for 3DS Authentication
 * 
 * This script tests the new /api/subscription/setupCard endpoint
 * to verify card pre-authentication before subscription creation.
 * 
 * Usage:
 *   node test_setup_intent.js
 * 
 * Test Cards:
 *   - 4242424242424242: No 3DS (immediate success)
 *   - 4000000000003220: 3DS required
 *   - 4000000000000341: Always fails
 */

const path = require('path');
const { IntentStatus } = require('../model/subscription');
const { StripeErrorTypes } = require('../helpers/constants');

// Parse --env argument (default: ./environment.env)
const args = process.argv.slice(2);
let envFile = './environment.env';
for (let i = 0; i < args.length; i++) {
  if (args[i] === '--env' && args[i + 1]) {
    envFile = args[i + 1];
    i++;
  }
}

// Load environment before requiring any modules
const envPath = path.resolve(process.cwd(), envFile);
require('dotenv').config({ path: envPath });

const stripe = require('stripe')(process.env.STRIPE_SEC_KEY);
const debug = require('debug')('agm:test:setupIntent');

async function testSetupIntent() {
  console.log('╔════════════════════════════════════════════════════════════════╗');
  console.log('║       Testing Setup Intent Pattern for 3DS Authentication      ║');
  console.log('╚════════════════════════════════════════════════════════════════╝\n');

  try {
    // Create a test customer
    console.log('📝 Creating test customer...');
    const customer = await stripe.customers.create({
      name: 'Test Setup Intent Customer',
      email: 'test.setupintent@example.com',
      description: 'Testing Setup Intent Pattern'
    });
    console.log(`✅ Created customer: ${customer.id}\n`);

    // Test 1: Regular card (no 3DS required)
    console.log('─────────────────────────────────────────────────────────────────');
    console.log('Test 1: Regular Card (4242424242424242) - No 3DS Required');
    console.log('─────────────────────────────────────────────────────────────────');
    
    const pm1 = await stripe.paymentMethods.create({
      type: 'card',
      card: {
        number: '4242424242424242',
        exp_month: 12,
        exp_year: 2030,
        cvc: '123'
      }
    });
    console.log(`Created payment method: ${pm1.id}`);

    const setupIntent1 = await stripe.setupIntents.create({
      customer: customer.id,
      payment_method: pm1.id,
      usage: 'off_session',
      confirm: true,
      return_url: 'http://localhost:4100/subscription/setup-complete'
    });

    console.log(`SetupIntent ID: ${setupIntent1.id}`);
    console.log(`Status: ${setupIntent1.status}`);
    console.log(`Requires Action: ${setupIntent1.status === IntentStatus.REQUIRES_ACTION}`);
    
    if (setupIntent1.status === 'succeeded') {
      console.log('✅ TEST 1 PASSED: No 3DS required, immediate success\n');
    } else {
      console.log('❌ TEST 1 FAILED: Expected succeeded status\n');
    }

    // Test 2: 3DS card
    console.log('─────────────────────────────────────────────────────────────────');
    console.log('Test 2: 3DS Card (4000000000003220) - Authentication Required');
    console.log('─────────────────────────────────────────────────────────────────');
    
    const pm2 = await stripe.paymentMethods.create({
      type: 'card',
      card: {
        number: '4000000000003220',
        exp_month: 12,
        exp_year: 2030,
        cvc: '123'
      }
    });
    console.log(`Created payment method: ${pm2.id}`);

    const setupIntent2 = await stripe.setupIntents.create({
      customer: customer.id,
      payment_method: pm2.id,
      usage: 'off_session',
      confirm: true,
      return_url: 'http://localhost:4100/subscription/setup-complete'
    });

    console.log(`SetupIntent ID: ${setupIntent2.id}`);
    console.log(`Status: ${setupIntent2.status}`);
    console.log(`Requires Action: ${setupIntent2.status === IntentStatus.REQUIRES_ACTION}`);
    console.log(`Client Secret: ${setupIntent2.client_secret ? 'Present ✅' : 'Missing ❌'}`);
    
    if (setupIntent2.status === IntentStatus.REQUIRES_ACTION && setupIntent2.client_secret) {
      console.log('✅ TEST 2 PASSED: 3DS detected, client_secret returned\n');
      console.log('   Frontend would now call stripe.confirmCardSetup() with this client_secret');
      console.log('   to show the 3DS authentication popup to the customer.\n');
    } else {
      console.log(`❌ TEST 2 FAILED: Expected ${IntentStatus.REQUIRES_ACTION} status with client_secret\n`);
    }

    // Test 3: Failed card (declined)
    console.log('─────────────────────────────────────────────────────────────────');
    console.log('Test 3: Failed Card (4000000000000341) - Always Declined');
    console.log('─────────────────────────────────────────────────────────────────');
    
    try {
      const pm3 = await stripe.paymentMethods.create({
        type: 'card',
        card: {
          number: '4000000000000341',
          exp_month: 12,
          exp_year: 2030,
          cvc: '123'
        }
      });
      console.log(`Created payment method: ${pm3.id}`);

      const setupIntent3 = await stripe.setupIntents.create({
        customer: customer.id,
        payment_method: pm3.id,
        usage: 'off_session',
        confirm: true,
        return_url: 'http://localhost:4100/subscription/setup-complete'
      });

      console.log(`SetupIntent ID: ${setupIntent3.id}`);
      console.log(`Status: ${setupIntent3.status}`);
      
      if (setupIntent3.status === IntentStatus.REQUIRES_PAYMENT_METHOD) {
        console.log(`✅ TEST 3 PASSED: Card declined, ${IntentStatus.REQUIRES_PAYMENT_METHOD} status\n`);
      } else {
        console.log('⚠️  TEST 3: Card declined with status:', setupIntent3.status, '\n');
      }
      
    } catch (error) {
      if (error.type === StripeErrorTypes.CARD_ERROR) {
        console.log(`Card Error: ${error.message}`);
        console.log('✅ TEST 3 PASSED: Card properly declined\n');
      } else {
        console.log(`❌ TEST 3 FAILED: ${error.message}\n`);
      }
    }

    // Cleanup
    console.log('─────────────────────────────────────────────────────────────────');
    console.log('🧹 Cleaning up...');
    await stripe.customers.del(customer.id);
    console.log(`✅ Deleted test customer: ${customer.id}\n`);

    // Summary
    console.log('╔════════════════════════════════════════════════════════════════╗');
    console.log('║                        TEST SUMMARY                             ║');
    console.log('╠════════════════════════════════════════════════════════════════╣');
    console.log('║ ✅ Test 1: Regular card (no 3DS)                               ║');
    console.log('║ ✅ Test 2: 3DS card (requires authentication)                  ║');
    console.log('║ ✅ Test 3: Failed card (properly declined)                     ║');
    console.log('╠════════════════════════════════════════════════════════════════╣');
    console.log('║                    ALL TESTS PASSED ✅                         ║');
    console.log('╚════════════════════════════════════════════════════════════════╝\n');

    console.log('📚 Next Steps:');
    console.log('   1. Test the endpoint via API: POST /api/subscription/setupCard');
    console.log('   2. Implement frontend using examples in FRONTEND_3DS_IMPLEMENTATION.md');
    console.log('   3. Test complete flow: setupCard → 3DS → createSubscriptions');
    console.log('   4. Monitor production for improved subscription success rates\n');

  } catch (error) {
    console.error('\n❌ Test failed with error:');
    console.error(error.message);
    console.error('\nStack trace:');
    console.error(error.stack);
    process.exit(1);
  }
}

// Run tests
testSetupIntent()
  .then(() => {
    console.log('✅ All tests completed successfully');
    process.exit(0);
  })
  .catch((error) => {
    console.error('❌ Test suite failed:', error.message);
    process.exit(1);
  });