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}`);
});