const fetch = require('node-fetch')

// implemented from: https://github.com/HackerNews/API

const HN_PREFIX = 'https://hacker-news.firebaseio.com/v0/'

const TOP_STORIES = 'topstories'
const ITEM = 'item'

function hnFetch(type, id = '') {
  const url = id ? `${HN_PREFIX}${type}/${id}.json` : `${HN_PREFIX}${type}.json`
  return fetch(url, {
    method: 'GET',
    headers: {
      'Content-Type': 'application/json',
    },
  })
    .then(res => {
      if (!isStatusOk(res.status)) {
        throw res
      }
      return res.json()
    })
    .then(res => res)
    .catch(error => console.error(error))
}

function isStatusOk(statusCode) {
  return statusCode === 200 || statusCode === 304
}
async function main() {
  const storyIds = await hnFetch(TOP_STORIES)
  const stories = await Promise.all(
    storyIds.slice(0, 20).map(storyId => hnFetch(ITEM, storyId))
  )

  console.log(
    stories.map(story => {
      delete story.kids
      return story
    })
  )
}

main()