Express App JSON Me

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Created by Rafase282

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Express App: JSON Me

Most of the times we're building RESTful API servers with JSON.

Write a server that, when it receives a GET, reads a file, parses it to JSON, and responds with that content to the user.

The server should respond to any GET that matches the /books resource path. As always, the port is passed in process.argv[2]. The file to read is passed in process.argv[3].

Respond with:

res.json(object)

Everything should match the /books resource path.

For reading the file, use the fs module, e.g.,

fs.readFile(filename, callback)

HINTS

While the parsing can be done with JSON.parse:

object = JSON.parse(string)

No need to install the fs module. It's part of the core and the Node.js platform.

My Solution

var express = require('express');
var fs = require("fs");
var app = express();
app.set('json spaces', 0)
app.get('/books', function(req, res) {
  fs.readFile(process.argv[3], 'utf8', function(err, data) {
    if (err) throw err;
    var out = JSON.parse(data);
    res.json(out)
  });

});

app.listen(process.argv[2]);

Official Solution (Not working on c9)

var express = require('express')
var app = express()
var fs = require('fs')

app.get('/books', function(req, res) {
  var filename = process.argv[3]
  fs.readFile(filename, function(e, data) {

    if (e) return res.sendStatus(500)
    try {
      books = JSON.parse(data)
    } catch (e) {
      res.sendStatus(500)
    }
    res.json(books)
  })
})

app.listen(process.argv[2])