Download a bunch of cat pics (thanks to the Cat API)

catdownloader.js

'use strict'

const http = require('http'),
      fs = require('fs')

let i = 0,
    url = 'http://thecatapi.com/api/images/get?format=src&type=jpg'


function request(url) {
  let dest = './img/' + i + '.jpg',
      file = fs.createWriteStream(dest)

  if (i < 80) {
    http.get(url, (res) => {
      console.log(`Got code: ${res.statusCode}`)
      console.log(res.headers['content-type'])
      console.log(`i: ${i}`)
      if (res.statusCode == 302)
        request(res.headers.location)
      if (res.statusCode == 200) {
        res.pipe(file)
        i++
        url = 'http://thecatapi.com/api/images/get?format=src&type=jpg'
        request(url)
      }
      if (res.statusCode == 403) {
        res.pipe(file)
        url = 'http://thecatapi.com/api/images/get?format=src&type=jpg'
        request(url)
      }
    }).on('error', (e) => {
      console.log(`Got error: ${e.message}`)
    })
  }
}

request(url)