#!/usr/bin/env node

/**
 * Test Coupon Endpoint
 * 
 * Verifies that /api/admin/subscriptionPromos/coupons returns both
 * 'forever' and 'repeating' coupons, but excludes 'once' coupons.
 */

const path = require('path');
const { CouponDuration } = require('../helpers/constants');

// Parse --env argument
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
const envPath = path.resolve(process.cwd(), envFile);
require('dotenv').config({ path: envPath });

console.log('=== Coupon Endpoint Test ===\n');

async function testCouponEndpoint() {
  const stripe = require('stripe')(process.env.STRIPE_SEC_KEY);

  try {
    console.log('1. Fetching all coupons from Stripe...');
    const allCoupons = await stripe.coupons.list({ limit: 100 });
    console.log(`   Total coupons in Stripe: ${allCoupons.data.length}`);

    // Count by duration
    const byDuration = {
      forever: allCoupons.data.filter(c => c.duration === CouponDuration.FOREVER).length,
      repeating: allCoupons.data.filter(c => c.duration === CouponDuration.REPEATING).length,
      once: allCoupons.data.filter(c => c.duration === CouponDuration.ONCE).length
    };

    console.log(`   - Forever: ${byDuration.forever}`);
    console.log(`   - Repeating: ${byDuration.repeating}`);
    console.log(`   - Once: ${byDuration.once}`);
    console.log('');

    console.log('2. Testing endpoint filter logic...');
    const validCoupons = allCoupons.data.filter(c =>
      !c.deleted && (c.duration === CouponDuration.FOREVER || c.duration === CouponDuration.REPEATING)
    );

    console.log(`   Valid coupons (forever + repeating): ${validCoupons.length}`);
    console.log(`   Excluded coupons (once): ${byDuration.once}`);
    console.log('');

    console.log('3. Verifying response format...');
    const formattedCoupons = validCoupons.map(c => ({
      id: c.id,
      name: c.name || c.id,
      percent_off: c.percent_off,
      amount_off: c.amount_off,
      currency: c.currency,
      duration: c.duration,
      duration_in_months: c.duration_in_months,
      valid: c.valid,
      created: c.created
    }));

    console.log('   Sample coupons:');
    formattedCoupons.slice(0, 5).forEach(c => {
      const discount = c.percent_off ? `${c.percent_off}% off` :
        c.amount_off ? `$${c.amount_off / 100} off` : 'Unknown';
      const duration = c.duration === 'repeating' ?
        `${c.duration} (${c.duration_in_months} months)` :
        c.duration;
      console.log(`   - ${c.id}: ${discount}, ${duration}`);
    });
    console.log('');

    console.log('4. Test Results:');
    const hasForever = formattedCoupons.some(c => c.duration === CouponDuration.FOREVER);
    const hasRepeating = formattedCoupons.some(c => c.duration === CouponDuration.REPEATING);
    const hasOnce = formattedCoupons.some(c => c.duration === CouponDuration.ONCE);

    console.log(`   ✓ Forever coupons included: ${hasForever ? 'YES' : 'NO'}`);
    console.log(`   ✓ Repeating coupons included: ${hasRepeating ? 'YES' : 'NO'}`);
    console.log(`   ✓ Once coupons excluded: ${hasOnce ? 'NO (FAIL)' : 'YES'}`);

    if (hasRepeating) {
      const repeatingCoupon = formattedCoupons.find(c => c.duration === CouponDuration.REPEATING);
      const hasMonthField = repeatingCoupon.duration_in_months !== undefined;
      console.log(`   ✓ Repeating coupons have duration_in_months: ${hasMonthField ? 'YES' : 'NO'}`);
    }
    console.log('');

    console.log('=== Test Summary ===');
    if (!hasOnce && (hasForever || hasRepeating)) {
      console.log('✓ All tests passed!');
      console.log('Endpoint correctly returns forever/repeating coupons and excludes once coupons.');
      return 0;
    } else {
      console.log('✗ Test failed!');
      if (hasOnce) console.log('  - Once coupons should be excluded');
      if (!hasForever && !hasRepeating) console.log('  - No valid coupons found');
      return 1;
    }

  } catch (err) {
    console.error('ERROR:', err.message);
    return 1;
  }
}

testCouponEndpoint().then(code => process.exit(code));