require('dotenv').config();
const express = require('express');
const cors = require('cors');
const helmet = require('helmet');
const rateLimit = require('express-rate-limit');
const cookieParser = require('cookie-parser');
const path = require('path');
const http = require('http');

const app = express();
const server = http.createServer(app);

// Security
app.use(helmet({
  contentSecurityPolicy: false,
  crossOriginEmbedderPolicy: false
}));
app.use(cors());
app.use(cookieParser());
app.use(express.json({ limit: '50mb' }));

// Rate limiting
const apiLimiter = rateLimit({
  windowMs: 1 * 60 * 1000,
  max: 60,
  message: { error: 'Too many requests, slow down' }
});
app.use('/api/', apiLimiter);

// Static files (login page accessible without auth)
app.use(express.static(path.join(__dirname, 'public')));

// Routes
app.use('/api/auth', require('./src/routes/auth'));
app.use('/api', require('./src/routes/transcribe'));
app.use('/api', require('./src/routes/hpi'));
app.use('/api', require('./src/routes/hospitalCourse'));
app.use('/api', require('./src/routes/chartReview'));
app.use('/api', require('./src/routes/milestones'));
app.use('/api', require('./src/routes/soap'));
app.use('/api', require('./src/routes/tts'));
app.use('/api', require('./src/routes/nextcloud'));
app.use('/api', require('./src/routes/refine'));
// Models endpoint
const { AVAILABLE_MODELS } = require('./src/utils/models');
app.get('/api/models', (req, res) => res.json({ models: AVAILABLE_MODELS }));

// Health
app.get('/api/health', (req, res) => {
  res.json({
    status: 'running',
    timestamp: new Date().toISOString(),
    openrouter: process.env.OPENROUTER_API_KEY ? 'configured' : 'missing',
    whisper: process.env.OPENAI_API_KEY ? 'configured' : 'missing'
  });
});

// SPA fallback
app.get('*', (req, res) => {
  res.sendFile(path.join(__dirname, 'public', 'index.html'));
});

const PORT = process.env.PORT || 3000;
server.listen(PORT, () => {
  console.log('');
  console.log('==========================================');
  console.log('🏥 PEDIATRIC AI SCRIBE v2.0');
  console.log('==========================================');
  console.log(`🌐 http://localhost:${PORT}`);
  console.log('==========================================');
});