const express = require('express');

// 链接数据库

const db = require('./db/connect')

const app = express();

// 解析req.body

const bodyParser = require('body-parser')

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

app.use(bodyParser.json())

// 用户相关的接口

const userRouter = require('./router/userRouter')

app.use('/user', userRouter)

app.listen(3000,()=>{

  console.log('server start')

})

var mongoose = require('mongoose');

// 链接数据库

mongoose.connect('mongodb://localhost/local', {useUnifiedTopology: true,useNewUrlParser: true  });

var db = mongoose.connection;

db.on('error', console.error.bind(console, 'connection error:'));

db.once('open', function() {

  console.log('db ok')

});

var express = require('express')

var router = express.Router()

// 引入userModel  数据库操作

const User = require('../db/model/userModel')

// 用户注册 /user/reg

router.post('/reg', function (req, res) {

  // 获取数据

  let {username, password} = req.body

  if(!username || !password) return res.send({code:400,message:'用户名及密码必填！！！'})

  // 数据处理

  // 判断数据库里存在？

  User.find({username}).then(data=>{

    if(data.length > 0) {

      res.send({code:405,message:'用户名已存在'})

    }else {

      return  User.insertMany({username,password})

    }

  })

  .then(data=>{

    res.send({code:200,message:'注册成功'})

  })

  .catch(err=>{

    res.send({code:500,message:'注册错误'})

  })

})

// 用户登录 /user/login

router.post('/login', function (req, res) {

  // 获取数据

  let {username, password} = req.body

  if(!username || !password) return res.send({code:400,message:'用户名及密码必填！！！'})

  // 数据处理

  User.find({username,password})

  .then(data=>{

    // console.log(data) 数组

    if(data.length > 0) {

       res.send({code:200,message:'登录成功'})

    }else {

      res.send({code:401,message:'用户名或密码错误'})

    }

  })

  .catch(err=>{

    res.send({code:500,message:'内部错误'})

  })

})

module.exports = router

var mongoose = require('mongoose');

// schema 对象

var userSchema = new mongoose.Schema({

  username:{type:String,required:true},

  password:{type:String,required:true},

  age:Number,

  sex:{type:String,default:0},

});

// 转数据模型

const User = mongoose.model('user', userSchema);

module.exports= User