const express = require('express');
const http = require('http');
const cors = require('cors');
const { Server } = require('socket.io');
const dotenv = require('dotenv');

dotenv.config();

const authRoutes = require('./routes/auth');
const projectRoutes = require('./routes/projects');
const fileRoutes = require('./routes/files');
const aiRoutes = require('./routes/ai');
const deployRoutes = require('./routes/deploy');
const { setupTerminal } = require('./routes/terminal');
const { authMiddleware } = require('./middleware/auth');
const { rateLimiter } = require('./middleware/ratelimit');

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

// Middleware
app.use(cors({
    origin: process.env.FRONTEND_URL || 'http://localhost:5173',
    credentials: true,
}));
app.use(express.json({ limit: '10mb' }));
app.use(rateLimiter);

// Root Route
app.get('/', (req, res) => {
    res.send('🌊 Indus IDE Backend is running successfully!');
});

// Health check
app.get('/api/health', (req, res) => {
    res.json({ status: 'ok', service: 'indus-backend', timestamp: new Date().toISOString() });
});

// Routes
app.use('/api/auth', authRoutes);
app.use('/api/projects', authMiddleware, projectRoutes);
app.use('/api/files', authMiddleware, fileRoutes);
app.use('/api/ai', aiRoutes);  // AI has its own auth check
app.use('/api/deploy', authMiddleware, deployRoutes);

// WebSocket terminal
setupTerminal(server);

// Error handler
app.use((err, req, res, next) => {
    console.error('Server error:', err.message);
    res.status(500).json({ error: 'Internal server error' });
});

const PORT = process.env.PORT || 4000;
server.listen(PORT, () => {
    console.log(`🌊 Indus Backend running on port ${PORT}`);
    console.log(`   Ollama URL: ${process.env.OLLAMA_URL || 'http://localhost:11434'}`);
});

module.exports = { app, server };