const express = require('express');
const path = require('path');
const app = express();
const config = require('./config/app')
const session = require('express-session');
const RedisStore = require('connect-redis')(session);
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
const compression = require('compression');
const authChecker = require('./libs/auth/checker');
// const helmet = require('helmet'); // 安全中间件，主要添加一些安全头
const rateLimit = require('express-rate-limit'); // 速率限制，预防ddos攻击
// const cors = require('cors');

// 使用 Helmet 中间件
// app.use(helmet());

// 创建速率限制器
const apiLimiter = rateLimit({
  windowMs: 15 * 60 * 1000, // 15分钟
  max: 100, // 每个IP在15分钟内最多100个请求
  standardHeaders: 'draft-7', // 使用draft-7版本的RateLimit头
  legacyHeaders: false // 禁用X-RateLimit-*头
});

app.use('/api/', apiLimiter);  // api 接口启用限制

// app.use(cors()); // 启用CORS

app.set('trust proxy', 1) //trust first proxy, get ip

// 设置视图引擎为EJS
app.set('view engine', 'ejs');

// 设置视图目录
app.set('views', [
  path.join(__dirname, 'views'),
  path.join(__dirname, 'views/v2'),
]);

/**
 * Check should compress.
 */
function shouldCompress(req, res) {
  if (req.headers['x-no-compression']) {
    // don't compress responses with this request header
    return false
  }
  // fallback to standard filter function
  return compression.filter(req, res)
}

app.use(compression({
  filter: shouldCompress
}));


app.use(cookieParser());

app.use(express.static(config.STATIC_DIR));
app.use(express.static(path.join(__dirname, 'dist')));



app.use(session({
  store: new RedisStore({
    prefix: 'artsite_sess:'
  }),
  cookie: config.cookie,
  saveUninitialized: false,
  secret: 'MhxzKhl123.',
  resave: false,
  name: config.sessionName || sid,
}));


app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
  extended: false
}));

// 自定义日志中间件
app.use((req, res, next) => {
  const now = new Date().toISOString();
  const ip = req.headers['x-forwarded-for'] || req.ip;
  console.log(`[${now}] ${ip} ${req.method} ${req.url}`);
  next(); // 调用 next() 函数，将请求传递给下一个中间件或路由处理程序
});


app.use('/napi/web/auth', require('./routes/napi/web/auth'));
app.use('/napi/web/menu', authChecker.checkLogin, require('./routes/napi/web/menu'));
app.use('/napi/web/art', authChecker.checkLogin, require('./routes/napi/web/art'));
app.use('/napi/web/user', authChecker.checkLogin, require('./routes/napi/web/user'));
app.use('/napi/web/role', authChecker.checkLogin, require('./routes/napi/web/role'));


app.use('/thumbs/v1', require('./routes/res/thumbs'));

app.use('/proxy', require('./routes/proxy'));


//v2
app.use('/', require('./routes/v2/index'));  // 首页和具体分类合集页
app.use('/coloring-page', require('./routes/v2/detail'))  // 详情页
app.use('/coloring-pages', require('./routes/v2/coloring-pages')) // 所有精选合集页
app.use('/coloring-page-gallery', require('./routes/v2/gallery')) // 图库页
app.use('/share', require('./routes/v2/share')) // deeplink share专属页面



//////////////////////////  合集 //////////////////////////////
app.use('/summer-coloring-pages', require('./routes/v2/coloring-page-collection')) // flower coloring pages 合集
app.use('/flower-coloring-pages', require('./routes/v2/coloring-page-collection')) // flower coloring pages 合集
app.use('/mandala-coloring-pages', require('./routes/v2/coloring-page-collection')) // mandala coloring pages 合集
app.use('/zentangle-coloring-pages', require('./routes/v2/coloring-page-collection')) // zentangle coloring pages 合集
app.use('/zen-coloring-pages', require('./routes/v2/coloring-page-collection')) // zen coloring pages 合集
app.use('/cat-coloring-pages', require('./routes/v2/coloring-page-collection')) // cat coloring pages 合集
app.use('/butterfly-coloring-pages', require('./routes/v2/coloring-page-collection'))
app.use('/architecture-coloring-pages', require('./routes/v2/coloring-page-collection'))
app.use('/simple-coloring-pages', require('./routes/v2/coloring-page-collection'))
app.use('/girl-coloring-pages', require('./routes/v2/coloring-page-collection'))
app.use('/fantasy-coloring-pages', require('./routes/v2/coloring-page-collection'))
app.use('/christmas-coloring-pages', require('./routes/v2/coloring-page-collection'))
app.use('/patterns-coloring-pages', require('./routes/v2/coloring-page-collection'))
app.use('/peacock-coloring-pages', require('./routes/v2/coloring-page-collection'))
app.use('/dragon-coloring-pages', require('./routes/v2/coloring-page-collection'))
app.use('/unicorn-coloring-pages', require('./routes/v2/coloring-page-collection'))
app.use('/food-coloring-pages', require('./routes/v2/coloring-page-collection'))

app.use('/video-coloring-pages', require('./routes/v2/video-coloring-page'))


app.use('/tips-tricks', require('./routes/v2/tips-tricks'));

app.use('/download', require('./routes/res/download'));

app.use('/api/comment', require('./routes/v2/comment'));  // 评论
app.use('/api/contact', require('./routes/v2/contact'));  // 联系信息
app.use('/api/subscribe', require('./routes/v2/subscribe'));  // 用户提交邮箱订阅


//v1
app.use('/', require('./routes/index'));


// catch 404 and forward to error handler
app.use(function (req, res) {
  // 设置状态码为404
  res.status(404);
  // res.sendFile(path.join(__dirname, '404.html'));
  res.render('404', { title: '404 Error', description: 'PAGE NOT FOUND' });
});


// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};
  console.log("error:" + err + " status: ");
  // render the error page
  res.status(err.status || 404);
  res.render('404', { title: '404 Error', description: 'PAGE NOT FOUND' });
});


// 启动服务器，监听6889端口
const PORT = process.env.PORT || 6889;
app.listen(PORT, () => {
  console.log(`Server is running on http://localhost:${PORT}`);
});