const express = require('express')
const bodyParser = require('body-parser')
const cors = require('cors')
const router = require('./router')
const logger = require('morgan')
const path = require('path')
const fs = require('fs')

// 创建 express 应用
const app = express()
require('./mongo')
const ENV = process.env.NODE_ENV
if (ENV !== 'production') {
	// 开发环境 / 测试环境
	app.use(logger('dev'))
} else {
	// 线上环境
	const logFileName = path.join(__dirname, 'logs', 'access.log')
	const writeStream = fs.createWriteStream(logFileName, {
		flags: 'a'
	})
	app.use(logger('combined', {
		stream: writeStream
	}))
}

//解决跨域问题
app.use(cors())
app.use(bodyParser.urlencoded({
	extended: true
}))
app.use(bodyParser.json())


app.use('/', router)

// 使 express 监听 5000 端口号发起的 http 请求
const server = app.listen(5000, function() {
	// const { address, port } = server.address()
	console.log('相关服务已经启动')
})