The Scrambler

scrambler.js

import request from 'request'
import money from 'money-math'

// This:
// const b64string = 'R3Vlc3MgeW91IHJlYWxseSBhcmUgdXAgZm9yIGEgY2hhbGxlbmdlLiBHZXQgdGhlIGNvbWJpbmVkIHRvdGFsIGNvc3Qgb2YgdGhlIHR3byBtb3N0IGV4cGVuc2l2ZSBwcm9kdWN0cyBhbmQgdGhlIHR3byBsZWFzdCBleHBlbnNpdmUgcHJvZHVjdHMgYXQgdGhpcyBlbmRwb2ludCwgYW5kIHRoZXJlJ3MgeW91ciBhbnN3ZXI6IGh0dHA6Ly93d3cuY29kZXdpdGh0YXJnZXQuY29tL2Fzc2V0cy9kYXRhL3RoZS1zY3JhbWJsZXIuanNvbg=='
// const buf = Buffer.from(b64string, 'base64')
// console.log(buf.toString())

// Produces this:
// Get the combined total cost of the two most expensive products
// and the two least expensive products at this endpoint
const url = 'https://www.codewithtarget.com/assets/data/the-scrambler.json'

// Hit the end point and parse
request(url, function (error, response, body) {
  const products = JSON.parse(body)

  // Set the initial price to that of the first product in the list
  const initial = products[0].price.split('$')[1]
  const expensive = {
    first: initial,
    second: initial,
  }
  const cheapest = {
    first: initial,
    second: initial,
  }

  // Now walk thru products
  products.forEach(p => {
    const price = p.price.split('$')[1]

    // Is this first or second most expensive
    if ((money.cmp(price, expensive.first)) > 1) {
      expensive.second = expensive.first
      expensive.first = price
    } else if ((money.cmp(price, expensive.second)) > 1) {
      expensive.second = price
    }

    // Is this first or second cheapest
    if ((money.cmp(price, cheapest.first)) < 1) {
      cheapest.second = cheapest.first
      cheapest.first = price
    } else if ((money.cmp(price, cheapest.second)) < 1) {
      cheapest.second = price
    }
  })

  const ans = money.add(
    money.add(expensive.first, expensive.second),
    money.add(cheapest.first, cheapest.second)
  )
  console.log('Answer: $' + ans)
});