import express from 'express';
import cors from 'cors';
import helmet from 'helmet';
import rateLimit from 'express-rate-limit';
import path from 'path';
import http from 'http';
import { Server as SocketServer } from 'socket.io';
import { config } from './config';
import { connectDatabase } from './config/database';
import { logger } from './utils/logger';
import { errorHandler } from './middleware/errorHandler';
import { setupMCPServer } from './services/mcpServer';

// Route imports
import authRoutes from './routes/auth';
import projectRoutes from './routes/projects';
import videoRoutes from './routes/videos';
import presetRoutes from './routes/presets';
import assetRoutes from './routes/assets';
import adminRoutes from './routes/admin';

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

// WebSocket server for CLI bridge
const io = new SocketServer(server, {
    cors: {
        origin: ['http://localhost:5173', 'http://localhost:3000'],
        methods: ['GET', 'POST'],
        credentials: true,
    },
});

// Middleware
app.use(helmet({ crossOriginResourcePolicy: { policy: 'cross-origin' } }));
app.use(cors({
    origin: ['http://localhost:5173', 'http://localhost:3000'],
    credentials: true,
}));
app.use(express.json({ limit: '10mb' }));
app.use(express.urlencoded({ extended: true }));

// Rate limiting
const limiter = rateLimit({
    windowMs: 15 * 60 * 1000, // 15 minutes
    max: 200,
    message: { error: 'Too many requests, please try again later.' },
});
app.use('/api/', limiter);

// Static files for uploads and generated content
app.use('/uploads', express.static(path.resolve(config.upload.dir)));
app.use('/generated', express.static(path.resolve(config.upload.generatedDir)));

// API Routes
app.use('/api/auth', authRoutes);
app.use('/api/projects', projectRoutes);
app.use('/api/videos', videoRoutes);
app.use('/api/presets', presetRoutes);
app.use('/api/assets', assetRoutes);
app.use('/api/admin', adminRoutes);

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

// Error handler
app.use(errorHandler);

// Initialize MCP Server over WebSocket
setupMCPServer(io);

// Start server
async function start(): Promise<void> {
    try {
        await connectDatabase();

        server.listen(config.port, () => {
            logger.info(`Director.AI server running on port ${config.port}`);
            logger.info(`WebSocket server ready for CLI bridge connections`);
            logger.info(`Environment: ${config.nodeEnv}`);
        });
    } catch (error) {
        logger.error('Failed to start server:', error);
        process.exit(1);
    }
}

start();