server-7.js

//jshint esversion: 6
//Adds endpoint to Get a single tel number
// initialize

const
  port = 8888,
  bodyParser = require('body-parser'),
  express = require('express'),
  app = express(),
  db = [{
    "id": 1,
    "name": "Argus Filch",
    "number": "800-Hog-Wart"
  }];

//if the client directory contains an "index.html" web page
//  it will be displayed as the default document
app.use(express.static(__dirname + "/client"));

// Parse data from incoming Post requests
app.use(bodyParser.urlencoded({
  extended: false
}));
app.use(bodyParser.json());

// enable CORS
app.use((req, res, next) => {
  res.append('Access-Control-Allow-Origin', '*');
  next();
});

// endpoint to Get all tel numbers
app.get('/telnums', (req, res) => {
  res.status(200).send({
    success: 'true',
    message: 'tel numbers retrieved successfully',
    tel_nums: db
  })
});

// endpoint to add a tel number
app.post('/addnum', (req, res) => {
  const telnum = {
    id: db.length + 1,
    name: req.body.name,
    number: req.body.number
  }
  db.push(telnum); //add record to local db
  return res.status(201).send({
    success: 'true',
    message: 'Telephone Number added successfully',
    telnum
  })
});

//endpoint to get a single tel number
//Examples: /telnum/1, /telnum/7, /telnum/11, ...
app.get('/telnum/:id', (req, res, next) => {
  const id = parseInt(req.params.id, 10);
  db.map((telnum) => {
    if (telnum.id === id) {
      return res.status(200).send({
        success: 'true',
        message: 'telephone number retrieved successfully',
        telnum,
      });
    }
  });
  //if we found the target, we're done
  if (res.status(200)) {
    next();
  }
  //if we did not find the target
  return res.status(404).send({
    success: 'false',
    message: 'telphone number does not exist',
  });
});

// start server
app.listen(port, () => {
  console.log(`Server started on port ${port}`);
});