const express=require("express");

const path=require("path");

const logger=require("morgan");

const app=express(); //创建Web应用

// app.get("/",(req,res,next)=>{

//     res.send("Hello Express!");

//     next();

// })

挂载静态资源

app.use("/",express.static(path.join(__dirname,"/public")));

//挂载日子组件

app.use(logger("dev"));

//设置视图文件的路径

app.set('views', path.join(__dirname, 'public'));

//设置视图引擎为ejs

app.set('view engine', 'ejs');

//挂载路由

const indexRouter=require("./router/index")

app.use("/",indexRouter);

const dogRouter=require("./router/dog")

app.use("/dog",dogRouter);

//获取query中的参数

app.get("/cart",(req,res,next)=>{

    let id=req.query.id;

    res.send("Get,id="+id);

})

//获取路径中的值

app.get("/cart/:id/:type",(req,res,next)=>{

    let id=req.params.id;

    res.send(req.url+",id="+id+"type="+req.params.type);

})

//挂载中间件函数

//如果不指明路径则匹配根路径

app.use("/",(req,res,next)=>{

    console.log("当前时间："+Date.now());

    next();

})

module.exports=app;//导出对象

const app=require("../app.js");

app.listen(3000,"127.0.0.1",()=>{

    console.log("Web应用运行中...");

})

const express=require("express");

//创建路由对象

const router=express.Router();

const _=require("lodash");

let dogs=[

  {id:1,name:"金毛",price:1000},

  {id:2,name:"阿拉斯加",price:1000},

  {id:3,name:"比熊",price:1000},

  {id:4,name:"泰迪",price:1000},

  {id:5,name:"旺财",price:1000}

]

router.get('/', function(req, res, next) {

    res.render('dog', { title: 'dog',dogs,msg:""});

});

router.get('/delete/:id', function(req, res, next) {

  //拿到索引

  let index=_.findIndex(dogs,{id:parseInt(req.params.id)});

  //删除

  dogs.splice(index,1);

  //返回消息提示

  res.render("dog",{ title: 'dog',dogs,msg:"删除成功"})

});

module.exports=router;