router.js

const express = require('express');
const router = express.Router();

const Employee = require('./employees-model');

let ObjectId = require('mongoose').Types.ObjectId;


// fetch all employees from the database
router.get('/', async (req, res) => {
  try {
    let employees = await Employee.find();
    res.send(employees);
  } catch (e) {
    console.log(e);
  }
});


// fetch employee by name
router.get('/:name', async (req, res) => {
  try {
    let employee = await Employee.findOne({name: req.params.name});
    res.send(employee);
  } catch (e) {
    console.log(e);
  }
});


// add an employee to the database
router.post('/register', async (req, res) => {
  if(!req.body.name && !req.body.position && !req.body.branch) {
    res.status(400).send({message: "Fill in all fields!"});
  } else {
    try {
      let employee = new Employee({
        name: req.body.name,
        position: req.body.position,
        branch: req.body.branch,
        salary: req.body.salary
      });
      let result = await employee.save();
      res.send(result);
    } catch (e) {
      console.log(e);
    }
  }
});


// update employee details by name and id
router.put('/update/:id', async (req, res) => {
  if(!req.body.name) {
    res.status(400).send({message: "Fill in all fields!"});
  } else {
    try {
      let employee = {
        name: req.body.name,
        position: req.body.position,
        branch: req.body.branch,
        salary: req.body.salary
      };
      // Find employee and update with the request body
      await Employee.findByIdAndUpdate(req.params.id, {$set: employee});
      res.send('Record successfully updated!');
    } catch (e) {
      console.log(e);
    }
  }

});


// delete employee details by name and id
router.delete('/delete/employee/:id', async (req, res) => {
  try {
    // Find employee and delete
    await Employee.findByIdAndRemove(req.params.id);
    res.send('Record successfully deleted!');
  } catch (e) {
    console.log(e);
  }
});
module.exports = router;