Create a REST API with Node js & Express

-

 app.js:- 


const express=require("express");
const http=require("http");
require("./db/connection");
const router=require("./api/emp/index")
const employee=require("./api/emp/model");

const app=express();
const server=http.createServer(app);
const port=process.env.PORT || 3000;
const ip=process.env.IP || "localhost";

app.use(express.json())
app.use(router)

server.listen(port, ip, ()=>{
    console.log("Express Server Listening on http://%s:%d", ip, port);
})


---------------------------------
connection.js:

const mongoose = require('mongoose');
mongoose.connect('mongodb://127.0.0.1:27017/EMPDB').then(()=>{
    console.log("MongoDb Connection Sucessfull....");
}).catch((e)=>{
    console.log("Mongodb connection Failed!!!");
})


------------------------------

Model.js:


const mongoose=require("mongoose");

const empSchema=new mongoose.Schema({
    empid:{type:Number, maxlength:2, unique:true, required:true},
    name:{type:String, maxlength:128, required:true},
    gender:{type:String, maxlength:6, required:true},
    mobile:{type:Number, maxlength:11, unique:true, required:true},
    email:{type:String, maxlength:128, unique:true, match:/^\S+@\S+\.\S+$/, required:true},
    doj:{type:String, maxlength:20, match:/^[0-9]{2}[\/][0-9]{2}[\/][0-9]{4}$/, required:true},

})

const employee=new mongoose.model("EmpCollection", empSchema);

module.exports=employee;



----------------------------

index.js:

const express=require("express");
const employee = require("./model");
const router=express.Router();
const {createEmpData, readEmpData, getPerticularEmpData, updateEmpData, deleteEmpData}=require("./controller")

router.post("/apiemployee", createEmpData)
router.get("/apiemployee", readEmpData)
router.get("/apiemployee/:id", getPerticularEmpData)
router.patch("/apiemployee/:id", updateEmpData)
router.delete("/apiemployee/:id", deleteEmpData)


module.exports=router

--------------------------------

controller.js:

const employee=require("./model")
// exports.createEmpData=async(req, res)=>{
//     console.log("Create Employee Data");
//     try {
//         const {empid, name, gender, mobile, email, doj}=req.body
//         const emp=new employee({
//             empid:empid,
//             name:name,
//             gender:gender,
//             mobile:mobile,
//             email:email,
//             doj:doj
//         })
//         const createEmp= await emp.save();
//         res.send(createEmp)
//     } catch (e) {
//         res.send(e)
//     }
// }


exports.createEmpData=async(req, res)=>{
    console.log("Create Employee Data Another Way");
    try {
        const emp=new employee(req.body)
        const createEmp= await emp.save();
        res.status(201).send(createEmp)
    } catch (e) {
        res.status(500).send(e)
    }
}

exports.readEmpData=async(req, res)=>{
    console.log("Read Employee Data");
    try {
        const emp=await employee.find();
        res.status(200).send(emp);
    } catch (e) {
        res.status(500).send(e);
    }
}

exports.getPerticularEmpData=async(req, res)=>{
    console.log("Get Perticular Employee Data");
    try {
        const _id=req.params.id;
        const emp=await employee.findById(_id);
        res.status(200).send(emp);
    } catch (e) {
        res.status(500).send(e);
    }
}

exports.updateEmpData=async(req, res)=>{
    console.log("Update Employee Data");
    try {
        const _id=req.params.id;
        const emp=await employee.findByIdAndUpdate(_id, req.body, {new:true});
        res.status(200).send(emp);
    } catch (e) {
        res.status(500).send(e);
    }
}

exports.deleteEmpData=async(req, res)=>{
    console.log("Delete Employee Data");
    try {
        const _id=req.params.id;
        const emp=await employee.findByIdAndDelete(_id);
        res.status(200).send(emp);
    } catch (e) {
        res.status(500).send(e);
    }
}









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