/**
 * @file SSE服务器主入口文件
 * @author Yk <yk_9001@icloud.com>
 * @createdAt 2025-07-01
 * @version 1.0.0
 * @description Express服务器配置和路由初始化
 */

const express = require('express');
const bodyParser = require('body-parser');
const security = require('./middlewares/security');
const streamRouter = require('./routes/stream');
const pushRouter = require('./routes/push');
const {sendHeartbeat} = require('./lib/sse');
const config = require('./config');

const app = express();

// 中间件
app.use(bodyParser.json());
app.use(...security);

// 路由
app.use('/stream', streamRouter);
app.use('/push', pushRouter);

// 心跳
setInterval(sendHeartbeat, config.sse.heartbeatInterval);

// 错误处理
const errorHandler = (err, req, res, next) => {
    console.error(err.stack);
    res.status(500).json({
        code: 500,
        error: 'Internal Server Error',
        timestamp: new Date().toISOString()
    });
};
app.use(errorHandler);

app.listen(config.server.port, () => {
    console.log(`SSE server running on port ${config.server.port}`);
});