const express = require('express');
const cors = require('cors');

const wazeRoutes = require('./routes/waze');
const routingRoutes = require('./routes/routing');
const placesRoutes = require('./routes/places');

const app = express();
const PORT = process.env.PORT || 3000;

// Standard middleware
app.use(cors());
app.use(express.json());
app.set('trust proxy', 1);

// Health check & discovery endpoint (Preserves legacy contract for MotorSignal TEST CONNECTION)
app.get(['/', '/health', '/test'], (req, res) => {
  res.json({
    status: 'ok',
    service: 'MotorSignal Waze Community Relay',
    version: '1.1.0',
    timestamp: new Date().toISOString(),
    uptimeSeconds: Math.floor(process.uptime()),
    features: [
      'police',
      'speed_cameras',
      'hazards',
      'accidents',
      'traffic',
      'routing',
      'places'
    ]
  });
});

// Mount Waze routes on legacy and modern endpoints
app.use('/alerts', wazeRoutes);
app.use('/api/alerts', wazeRoutes);
app.use('/api/waze', wazeRoutes);

// Mount routing and places endpoints
app.use('/api/routes', routingRoutes);
app.use('/api/places', placesRoutes);

// Central error handler
app.use((err, req, res, next) => {
  console.error('[Relay] Unhandled error:', err);
  res.status(500).json({ error: 'internalError', message: 'An internal server error occurred' });
});

if (require.main === module) {
  app.listen(PORT, '0.0.0.0', () => {
    console.log(`====================================================`);
    console.log(` 🏍️  MotorSignal API & Waze Alert Relay Server running`);
    console.log(` 📡  Listening on: http://0.0.0.0:${PORT}`);
    console.log(` 🏥  Healthcheck:  http://localhost:${PORT}/health`);
    console.log(` 🚨  Alerts API:   http://localhost:${PORT}/alerts?lat=37.77&lng=-122.42`);
    console.log(` 🗺️   Routing API:  http://localhost:${PORT}/api/routes/calculate`);
    console.log(` 📍  Places API:   http://localhost:${PORT}/api/places/search`);
    console.log(`====================================================`);
  });
}

module.exports = app;