const express = require('express')
const app = express()
const path = require('path')
const bodyParser = require('body-parser')
const router = require('./router')
const { verifyToken } = require('./util/mytoken')
const jwt = require('express-jwt')

app.listen(3002, () => {
    console.log('server is run at http://127.0.0.1:3002')
})

app.use('/', express.static(path.resolve(__dirname) + '/public'))
app.use(bodyParser.urlencoded({ extended: false }))


// app.use(jwt({ secret: 'hero' }).unless({ path: ['/login'] }));

// 统一处理校验token的合法性
app.use((req, res, next) => {
    const token = req.headers['authorization']
    if (token === undefined) {
        return next()
    } else {
        verifyToken(token).then(data => {
            if (data) {
                return next()
            }
        }).catch(err => {
            return next()
        })
    }
})

app.use(jwt({ secret: 'hero' }).unless({ path: ['/login'] }));

// 统一错误处理
app.use((err, req, res, next) => {
    if (err.name === 'UnauthorizedError') {
        res.json({
            code: 400,
            message: 'token 过期'
        })
    }
})

app.use(router)