const express = require('express');
const bodyParser = require('body-parser');
const logger = require('./middleware/logger');
const errorHandler = require('./middleware/errorHandler');

const app = express();
const PORT = process.env.PORT || 3001;

// Middleware
app.use(logger);
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));

// CORS (настройте под свои нужды)
app.use((req, res, next) => {
  res.header('Access-Control-Allow-Origin', '*');
  res.header('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
  res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept, Authorization');
  if (req.method === 'OPTIONS') {
    res.sendStatus(200);
  } else {
    next();
  }
});

// Health check endpoint
app.get('/api/health', (req, res) => {
  res.json({ 
    status: 'ok', 
    message: 'Server is running',
    timestamp: new Date().toISOString(),
  });
});

// Пример API endpoint
app.post('/api/example', (req, res) => {
  try {
    const { data } = req.body;
    res.json({ success: true, received: data });
  } catch (err) {
    res.status(500).json({ success: false, error: err.message });
  }
});

// Подключение роутов (пример)
// const exampleRoutes = require('./routes/example');
// app.use('/api/example', exampleRoutes);

// Обработка 404
app.use((req, res) => {
  res.status(404).json({
    success: false,
    error: 'Route not found',
  });
});

// Обработка ошибок (должен быть последним middleware)
app.use(errorHandler);

// Запуск сервера
app.listen(PORT, () => {
  console.log(`🚀 Server is running on http://localhost:${PORT}`);
  console.log(`📡 Health check: http://localhost:${PORT}/api/health`);
});