const express = require('express')
const morgan = require('morgan')
const cors = require('cors')
const sqlConnect = require('./mysql')
const router = require('./router')
const errorHandler = require('./middleware/error.handler')

const app = express()

app.use(morgan('dev'))  // 日志输出的中间件

app.use(cors())  // 允许跨域请求

app.use(express.json())
app.use(express.urlencoded())

const PORT = process.PORT || 3000  // 读取端口号，如果环境变量有就用环境变量的，否则用3000端口

app.use('/api', router)

app.use(errorHandler())

app.listen(PORT, () => {
  console.log(`Server is running at http://localhost:${PORT}`)
})