// tests/test_multi_subscription_auth.js
const path = require('path');
require('dotenv').config({ path: path.resolve(process.cwd(), 'environment.env') });

const stripe = require('stripe')(process.env.STRIPE_SEC_KEY);
const { IntentStatus } = require('../model/subscription');

async function testDoubleCallAuth() {
  console.log('🧪 Testing Multi-Subscription 3DS Behavior\n');

  // Create customer first
  const customer = await stripe.customers.create({
    email: 'test-multi-3ds@example.com'
  });
  console.log('✅ Customer created:', customer.id);

  // Create a fresh payment method with 3DS card
  const paymentMethod = await stripe.paymentMethods.create({
    type: 'card',
    card: {
      number: '4000002500003155', // 3DS required card
      exp_month: 12,
      exp_year: 2030,
      cvc: '123'
    }
  });
  console.log('✅ Payment method created:', paymentMethod.id);

  // Attach to customer
  await stripe.paymentMethods.attach(paymentMethod.id, {
    customer: customer.id
  });
  console.log('✅ Payment method attached to customer\n');

  // First subscription - Package (will require 3DS)
  console.log('📦 Creating FIRST subscription (Package)...');
  const sub1 = await stripe.subscriptions.create({
    customer: customer.id,
    items: [{ price: process.env.ESS_1 }],
    default_payment_method: paymentMethod.id,
    expand: ['latest_invoice.payment_intent'],
    payment_behavior: 'default_incomplete',
    metadata: { type: 'package' }
  });

  const pi1 = sub1.latest_invoice.payment_intent;
  console.log(`   Subscription: ${sub1.id}, Status: ${sub1.status}`);
  console.log(`   PaymentIntent: ${pi1.id}, Status: ${pi1.status}`);
  console.log(`   Requires 3DS: ${pi1.status === IntentStatus.REQUIRES_ACTION}\n`);

  // Backend confirms payment intent if requires_confirmation
  if (pi1.status === IntentStatus.REQUIRES_CONFIRMATION) {
    console.log('🔄 Confirming payment intent (backend logic)...');
    const confirmedPi1 = await stripe.paymentIntents.confirm(pi1.id, {
      return_url: 'http://localhost:4100/payment-complete'
    });
    console.log(`   Status after confirmation: ${confirmedPi1.status}\n`);

    if (confirmedPi1.status === IntentStatus.REQUIRES_ACTION) {
      console.log('🔐 3DS required for package subscription');
      console.log('   Backend would return client_secret to frontend');
      console.log('   (In real flow, frontend would use stripe.confirmCardPayment())');
      console.log('   NOTE: Cannot simulate 3DS completion in backend-only test\n');
    }
  } else if (pi1.status === IntentStatus.REQUIRES_ACTION) {
    console.log('🔐 3DS required for package subscription');
    console.log('   (In real flow, frontend would use stripe.confirmCardPayment())');
    console.log('   NOTE: Cannot simulate 3DS completion in backend-only test\n');
  }

  // Verify package is active
  const sub1Updated = await stripe.subscriptions.retrieve(sub1.id);
  console.log(`✅ Package subscription: ${sub1Updated.status}\n`);

  // Second subscription - Addon (with SAME payment method, minutes later)
  console.log('📦 Creating SECOND subscription (Addon) with SAME card...');
  console.log('   (Simulating second /update call)\n');

  const sub2 = await stripe.subscriptions.create({
    customer: customer.id,
    items: [{ price: process.env.ADDON_1, quantity: 1 }],
    default_payment_method: paymentMethod.id,
    expand: ['latest_invoice.payment_intent'],
    payment_behavior: 'default_incomplete',
    metadata: { type: 'addon' }
  });

  const pi2 = sub2.latest_invoice.payment_intent;
  console.log(`   Subscription: ${sub2.id}, Status: ${sub2.status}`);
  console.log(`   PaymentIntent: ${pi2.id}, Status: ${pi2.status}`);

  let addonRequires3DS = false;
  let confirmedPi2 = pi2;

  // Backend confirms payment intent if requires_confirmation
  if (pi2.status === 'requires_confirmation') {
    console.log('🔄 Confirming payment intent (backend logic)...');
    confirmedPi2 = await stripe.paymentIntents.confirm(pi2.id, {
      payment_method: paymentMethod.id
    });
    console.log(`   Status after confirmation: ${confirmedPi2.status}\n`);

    if (confirmedPi2.status === IntentStatus.REQUIRES_ACTION) {
      addonRequires3DS = true;
      console.log('⚠️  ANSWER: YES - Second subscription REQUIRES 3DS AGAIN!');
      console.log('   Even though same card was just used.');
      console.log('   Each PaymentIntent is independent.\n');
    } else {
      console.log('✅ ANSWER: NO - Authentication was reused!\n');
    }
  } else if (pi2.status === IntentStatus.REQUIRES_ACTION) {
    addonRequires3DS = true;
    console.log('⚠️  ANSWER: YES - Second subscription requires 3DS\n');
  } else {
    console.log(`✅ ANSWER: NO - Addon status is ${pi2.status}\n`);
  }

  // === RESULT SUMMARY ===
  console.log('\n📊 Test Results:');
  console.log(`   ✅ Package subscription: required 3DS`);
  console.log(`   ${addonRequires3DS ? '⚠️' : '✅'}  Addon subscription: ${addonRequires3DS ? 'REQUIRES 3DS AGAIN' : 'no 3DS needed'}`);

  if (addonRequires3DS) {
    console.log('\n💡 Conclusion:');
    console.log('   Each subscription creates a separate PaymentIntent.');
    console.log('   Even when using the same payment method immediately after,');
    console.log('   Stripe does NOT reuse 3DS authentication between PaymentIntents.');
    console.log('   Frontend must handle 3DS for EACH subscription.');
  }

  // Check the subscription statuses for both
  const sub1Final = await stripe.subscriptions.retrieve(sub1.id);
  console.log(`\n✅ Final Package subscription status: ${sub1Final.status}`);
  const sub2Updated = await stripe.subscriptions.retrieve(sub2.id);
  console.log(`\n✅ Addon subscription: ${sub2Updated.status}`);

  // Cleanup
  await stripe.subscriptions.del(sub1.id);
  await stripe.subscriptions.del(sub2.id);
  await stripe.customers.del(customer.id);
  console.log('\n🧹 Cleaned up test data');
}

testDoubleCallAuth().catch(console.error);