processing_releases.js

/*
**Problem**
Write a Function named processReleaseData that processes the following movie release data:

The Function should generate an Array of Objects that contain only the id and title key/value pairs. 
You may assume that id and title, when existing, is an integer greater than 0 and non-empty string respectively. 
Here are the rules:
  - Keep only releases that have both id and title property present.
  - Keep only the id and title data for each release.

**Examples / Test Cases**
function processReleaseData(data) {
  // ...
}

processReleaseData(newReleases);

// should return:
[{ id: 70111470, title: 'Die Hard'}, { id: 675465, title: 'Fracture' }];

**Data Structures**


**Algorithm**
1. select using filter only releases without an id OR a title property
2. transorm using map to create a new array with objects only containing id and title pairs

*/
let newReleases = [
  {
    'id': 70111470,
    'title': 'Die Hard',
    'boxart': 'http://cdn-0.nflximg.com/images/2891/DieHard.jpg',
    'uri': 'http://api.netflix.com/catalog/titles/movies/70111470',
    'rating': [4.0],
    'bookmark': [],
  },
  {
    'id': 654356453,
    'boxart': 'http://cdn-0.nflximg.com/images/2891/BadBoys.jpg',
    'uri': 'http://api.netflix.com/catalog/titles/movies/70111470',
    'rating': [5.0],
    'bookmark': [{ id:432534, time:65876586 }],
  },
  {
    'title': 'The Chamber',
    'boxart': 'http://cdn-0.nflximg.com/images/2891/TheChamber.jpg',
    'uri': 'http://api.netflix.com/catalog/titles/movies/70111470',
    'rating': [4.0],
    'bookmark': [],
  },
  {
    'id': 675465,
    'title': 'Fracture',
    'boxart': 'http://cdn-0.nflximg.com/images/2891/Fracture.jpg',
    'uri': 'http://api.netflix.com/catalog/titles/movies/70111470',
    'rating': [5.0],
    'bookmark': [{ id:432534, time:65876586 }],
  },
];

function processReleaseData(data) {
  let idAndtitle = data.filter(release => (release['id'] || release.id === 0) && release['title']);
  return idAndtitle.map(release => shortenRelase(release));
}

function shortenRelase(release) {
  return { id: release['id'], title: release['title'] };
}
 

console.log(processReleaseData(newReleases));

// should return:
// [{ id: 70111470, title: 'Die Hard'}, { id: 675465, title: 'Fracture' }];