var createError = require('http-errors');
var express = require('express');
var loadRouter = require('express-load-router');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var config = require('./config');
var session = require('express-session')


var app = express();


var classRouter = require('./controller/class');
var IndexRouter = require('./controller/index');
var InfoRouter = require('./controller/info');

var likeActionRouter = require('./controller/user/likeAction');
var loginActionRouter = require('./controller/user/loginAction');


// 后端允许前端跨域
app.all('*', (req, res, next) => {
  res.header("Access-Control-Allow-Origin", "*");
  res.header('Access-Control-Allow-Methods', 'PUT, GET, POST, DELETE, OPTIONS');
  res.header("Access-Control-Allow-Headers", "X-Requested-With");
  res.header('Access-Control-Allow-Headers', 'Content-Type');
  next();
});

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());


// 使用 session 中间件
app.use(session({
  secret :  'secret', // 对session id 相关的cookie 进行签名
  resave : false,
  saveUninitialized: true, // 是否保存未初始化的会话
  cookie : {
    maxAge : 1000 * 60 * 10, // 设置 session 的有效时间，单位毫秒
  },
}));


app.use(`${config.ApiBaseUrl}`, classRouter)
app.use(`${config.ApiBaseUrl}`, IndexRouter)
app.use(`${config.ApiBaseUrl}`, InfoRouter)
app.use(`${config.ApiBaseUrl}`, loginActionRouter)
app.use(`${config.ApiBaseUrl}`, likeActionRouter)

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// 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 : {};

  res.json({
    status: 404,
    message: err.message
  })


});

module.exports = app;