#!/usr/bin/env node

/**
 * Test Stripe Integration for Koha Donation System
 * Tests the complete donation flow with Stripe test mode
 */

require('dotenv').config();
const stripe = require('stripe')(process.env.STRIPE_SECRET_KEY);

const COLORS = {
  reset: '\x1b[0m',
  green: '\x1b[32m',
  red: '\x1b[31m',
  yellow: '\x1b[33m',
  blue: '\x1b[34m',
  cyan: '\x1b[36m'
};

function log(color, symbol, message) {
  console.log(`${color}${symbol} ${message}${COLORS.reset}`);
}

async function testStripeIntegration() {
  console.log('\n' + '═'.repeat(60));
  console.log('  Stripe Integration Test - Koha Donation System');
  console.log('═'.repeat(60) + '\n');

  let allTestsPassed = true;

  try {
    // Test 1: Verify environment variables
    console.log(`${COLORS.blue}▶ Test 1: Environment Variables${COLORS.reset}\n`);

    const requiredVars = {
      'STRIPE_SECRET_KEY': process.env.STRIPE_SECRET_KEY,
      'STRIPE_PUBLISHABLE_KEY': process.env.STRIPE_PUBLISHABLE_KEY,
      'STRIPE_KOHA_PRODUCT_ID': process.env.STRIPE_KOHA_PRODUCT_ID,
      'STRIPE_KOHA_5_PRICE_ID': process.env.STRIPE_KOHA_5_PRICE_ID,
      'STRIPE_KOHA_15_PRICE_ID': process.env.STRIPE_KOHA_15_PRICE_ID,
      'STRIPE_KOHA_50_PRICE_ID': process.env.STRIPE_KOHA_50_PRICE_ID
    };

    for (const [key, value] of Object.entries(requiredVars)) {
      if (!value || value.includes('placeholder') || value.includes('PLACEHOLDER')) {
        log(COLORS.red, '✗', `${key} is missing or placeholder`);
        allTestsPassed = false;
      } else {
        const displayValue = key.includes('KEY') ? value.substring(0, 20) + '...' : value;
        log(COLORS.green, '✓', `${key}: ${displayValue}`);
      }
    }

    // Test 2: Verify product exists
    console.log(`\n${COLORS.blue}▶ Test 2: Verify Stripe Product${COLORS.reset}\n`);

    try {
      const product = await stripe.products.retrieve(process.env.STRIPE_KOHA_PRODUCT_ID);
      log(COLORS.green, '✓', `Product found: ${product.name}`);
      console.log(`   ID: ${product.id}`);
      console.log(`   Active: ${product.active}`);
    } catch (error) {
      log(COLORS.red, '✗', `Product not found: ${error.message}`);
      allTestsPassed = false;
    }

    // Test 3: Verify prices exist
    console.log(`\n${COLORS.blue}▶ Test 3: Verify Stripe Prices${COLORS.reset}\n`);

    const priceIds = [
      { name: 'Foundation ($5/month)', id: process.env.STRIPE_KOHA_5_PRICE_ID },
      { name: 'Advocate ($15/month)', id: process.env.STRIPE_KOHA_15_PRICE_ID },
      { name: 'Champion ($50/month)', id: process.env.STRIPE_KOHA_50_PRICE_ID }
    ];

    for (const priceConfig of priceIds) {
      try {
        const price = await stripe.prices.retrieve(priceConfig.id);
        const amount = price.unit_amount / 100;
        const currency = price.currency.toUpperCase();
        const interval = price.recurring ? `/${price.recurring.interval}` : '(one-time)';
        log(COLORS.green, '✓', `${priceConfig.name}: ${currency} $${amount}${interval}`);
      } catch (error) {
        log(COLORS.red, '✗', `${priceConfig.name} not found: ${error.message}`);
        allTestsPassed = false;
      }
    }

    // Test 4: Create test checkout session (Foundation tier)
    console.log(`\n${COLORS.blue}▶ Test 4: Create Test Checkout Session${COLORS.reset}\n`);

    try {
      const session = await stripe.checkout.sessions.create({
        mode: 'subscription',
        payment_method_types: ['card'],
        line_items: [{
          price: process.env.STRIPE_KOHA_5_PRICE_ID,
          quantity: 1
        }],
        success_url: `${process.env.FRONTEND_URL || 'http://localhost:9000'}/koha/success.html?session_id={CHECKOUT_SESSION_ID}`,
        cancel_url: `${process.env.FRONTEND_URL || 'http://localhost:9000'}/koha.html`,
        metadata: {
          frequency: 'monthly',
          tier: '5',
          test: 'true'
        },
        customer_email: 'test@example.com'
      });

      log(COLORS.green, '✓', `Checkout session created: ${session.id}`);
      console.log(`   Status: ${session.status}`);
      console.log(`   Amount: ${session.amount_total / 100} ${session.currency.toUpperCase()}`);
      console.log(`   URL: ${session.url.substring(0, 60)}...`);

      // Clean up test session
      await stripe.checkout.sessions.expire(session.id);
      log(COLORS.cyan, 'ℹ', 'Test session expired (cleanup)');

    } catch (error) {
      log(COLORS.red, '✗', `Failed to create checkout session: ${error.message}`);
      allTestsPassed = false;
    }

    // Test 5: Create test one-time donation checkout
    console.log(`\n${COLORS.blue}▶ Test 5: Create One-Time Donation Checkout${COLORS.reset}\n`);

    try {
      const oneTimeSession = await stripe.checkout.sessions.create({
        mode: 'payment',
        payment_method_types: ['card'],
        line_items: [{
          price_data: {
            currency: 'nzd',
            product: process.env.STRIPE_KOHA_PRODUCT_ID,
            unit_amount: 2500, // $25.00 NZD
          },
          quantity: 1
        }],
        success_url: `${process.env.FRONTEND_URL || 'http://localhost:9000'}/koha/success.html?session_id={CHECKOUT_SESSION_ID}`,
        cancel_url: `${process.env.FRONTEND_URL || 'http://localhost:9000'}/koha.html`,
        metadata: {
          frequency: 'one_time',
          amount: '2500',
          test: 'true'
        },
        customer_email: 'test@example.com'
      });

      log(COLORS.green, '✓', `One-time donation session created: ${oneTimeSession.id}`);
      console.log(`   Status: ${oneTimeSession.status}`);
      console.log(`   Amount: ${oneTimeSession.amount_total / 100} ${oneTimeSession.currency.toUpperCase()}`);

      // Clean up test session
      await stripe.checkout.sessions.expire(oneTimeSession.id);
      log(COLORS.cyan, 'ℹ', 'Test session expired (cleanup)');

    } catch (error) {
      log(COLORS.red, '✗', `Failed to create one-time donation: ${error.message}`);
      allTestsPassed = false;
    }

    // Summary
    console.log('\n' + '═'.repeat(60));
    if (allTestsPassed) {
      log(COLORS.green, '✅', 'All integration tests passed!');
      console.log('\n📋 Next steps:');
      console.log('   1. Start local server: npm start');
      console.log('   2. Test donation form at: http://localhost:9000/koha.html');
      console.log('   3. Use test card: 4242 4242 4242 4242');
      console.log('   4. Set up webhooks: ./scripts/stripe-webhook-setup.sh');
    } else {
      log(COLORS.red, '❌', 'Some tests failed. Please fix issues above.');
    }
    console.log('═'.repeat(60) + '\n');

  } catch (error) {
    log(COLORS.red, '✗', `Test suite error: ${error.message}`);
    console.error('\nFull error:', error);
    process.exit(1);
  }
}

// Run tests
testStripeIntegration();