const express = require('express');
const app = express();
const PORT = 4000;

// Third-party shipping API mock
// Receives tracking requests with buyer pricing in URL parameters
app.get('/track', (req, res) => {
  const { lot, weight, price, buyer } = req.query;

  // Log the request -- in a real system, these URL parameters would appear
  // in web server access logs, CDN logs, and potentially cached by intermediaries
  console.log(`[SHIPPING] Track request: lot=${lot} weight=${weight} price=${price} buyer=${buyer}`);

  res.json({
    tracking_id: `SHP-${Date.now()}`,
    lot_number: lot || 'unknown',
    status: 'in_transit',
    estimated_delivery: '2024-03-01',
    carrier: 'Caribbean Express Logistics',
    origin: 'San Cristobal, Venezuela',
    destination: buyer ? `${buyer} warehouse` : 'unknown'
  });
});

app.get('/health', (req, res) => {
  res.json({ status: 'ok', service: 'Caribbean Express Shipping API' });
});

app.get('/', (req, res) => {
  res.json({
    service: 'Caribbean Express Shipping API',
    version: '2.1',
    docs: '/docs',
    status: 'operational'
  });
});

app.listen(PORT, '0.0.0.0', () => {
  console.log(`Shipping API running on port ${PORT}`);
});