app.js

require('dotenv').config();

const express=require('express');
const bodyparser=require('body-parser');
const mongoose=require('mongoose');
const cors= require('cors');
const app=express();
app.use(cors());
app.use(bodyparser.json());
app.use(bodyparser.urlencoded({extended:true}));

mongoose.Promise=global.Promise;
mongoose.connect(process.env.MONGO_URL,{ useNewUrlParser: true }).then(()=>
    {console.log("DB is connected");}    
).catch((err)=>{
    console.log(err);
    process.exit();
})

app.get('/',(req,res)=>{
    res.send("Welcome to the class");
});
// app.get('/check',(req,res)=>{
//     res.send("checking");
// })
require('./routes/route')(app);
app.use('*',(req,res,next)=>{
    res.status(404).json({"msg":"not found"});
});

const port=process.env.PORT || 3000;

app.listen(port,(err)=>{
    if(err) console.log(err);
    else console.log(`port is live at ${port}`);
});