import dotenv from 'dotenv';
import express from 'express';
import cors from 'cors';
import morgan from 'morgan';
import fs from 'fs';
import path from 'path';
import { errorHandler } from './middleware/errorHandler';
import { languageMiddleware } from './middleware/languageMiddleware';
import config from './config';
import legalRoutes from './routes/legalRoutes';
import voiceRoutes from './routes/voiceRoutes';
import ttsRoutes from './routes/ttsRoutes';
import twilioRoutes from './routes/twilioRoutes';

// Load environment variables
dotenv.config();

const app = express();

// Create required directories
const uploadsDir = path.join(__dirname, '../tmp/uploads');
const ttsDir = path.join(__dirname, '../tmp/tts');
fs.mkdirSync(uploadsDir, { recursive: true });
fs.mkdirSync(ttsDir, { recursive: true });

// Middleware
app.use(cors());
app.use(express.json());
app.use(express.urlencoded({ extended: true }));
app.use(morgan('dev'));

// Language detection middleware
app.use(languageMiddleware);

// Routes
app.get('/', (req, res) => {
  res.json({ 
    message: 'Welcome to the API',
    detectedLanguage: req.language?.name || 'English',
  });
});

// API Routes
app.use('/api/legal', legalRoutes);
app.use('/api/voice', voiceRoutes);
app.use('/api/tts', ttsRoutes);
app.use('/api/twilio', twilioRoutes);

// Error handling middleware
app.use(errorHandler);

const port = process.env.PORT || 3000;

app.listen(port, () => {
  console.log(`Server is running on port ${port}`);
  console.log('Environment variables loaded:');
  console.log('- PERPLEXITY_API_KEY:', process.env.PERPLEXITY_API_KEY ? '✓' : '✗');
  console.log('- OPENAI_API_KEY:', process.env.OPENAI_API_KEY ? '✓' : '✗');
  console.log('- ELEVENLABS_API_KEY:', process.env.ELEVENLABS_API_KEY ? '✓' : '✗');
  console.log('- TWILIO_ACCOUNT_SID:', process.env.TWILIO_ACCOUNT_SID ? '✓' : '✗');
  console.log('- TWILIO_AUTH_TOKEN:', process.env.TWILIO_AUTH_TOKEN ? '✓' : '✗');
  console.log('- TWILIO_PHONE_NUMBER:', process.env.TWILIO_PHONE_NUMBER ? '✓' : '✗');
});