level5.js

import R from 'ramda'
import test from 'tape'

/**
 * Level 5 - Ramda All The Things
 *
 * Results Data
 */

const data = {
  rows: [
    {
      key: '1',
      doc: {
        _id: '1',
        type: 'movie',
        name: 'Ghostbusters',
        year: '1984'
      }
    },
    {
      key: '2',
      doc: {
        _id: '2',
        type: 'movie',
        name: 'Caddyshack',
        year: '1980'
      }
    },
    {
      key: '2',
      doc: {
        _id: '3',
        type: 'movie',
        name: 'Groundhog Day',
        year: '1993'
      }
    }
  ]
}

/**
 * Level 5 - Challenge 1
 *
 * map through the results.rows array and return a list of movie docs.
 */
const challenge1 = () => {
  const { map } = R
  return null
}

/** Level 5 = Challenge 2
 *
 * map through the results.rows array and then filter all movies that were
 * filmed before 1990
 *
 */
const challenge2 = () => {
  const { map, filter } = R
  return null
}

/** level 5 - Challenge 3
 *
 * Use reduce to group movies by decade 80s, 90s etc
 *  { '80s': [], '90s': [] }
 *
 * HINT: you will want to append each movie to the right group array
 * check out - append - http://ramdajs.com/docs/#append
 */
const challenge3 = () => {
  const { reduce, map, append } = R
  return null
}

/**
 * Level 5 - Challenge 4
 *
 * map over the rows and pick the movie documents
 * transform to an array of strings `[name] - [year]`
 * then transform to a set of list items - `<li>${movie}</li>`
 *
 * use the compose function to only map once.
 *
 */
const challenge4 = () => {
  const { map, compose } = R
  return null
}

export default () => {
  test('Level 5 - Challenge 1', t => {
    t.plan(1)
    t.deepEquals(R.pluck('doc', data.rows), challenge1())
  })

  test('Level 5 - Challenge 2', t => {
    t.plan(1)
    t.deepEquals(
      R.filter(
        R.compose(R.lt(R.__, '1990'), R.prop('year')),
        R.pluck('doc', data.rows)
      ),
      challenge2()
    )
  })

  test('Level 5 - Challenge 3', t => {
    t.plan(1)
    t.deepEquals(challenge3(), {
      '90s': [{ _id: '3', type: 'movie', name: 'Groundhog Day', year: '1993' }],
      '80s': [
        { _id: '1', type: 'movie', name: 'Ghostbusters', year: '1984' },
        { _id: '2', type: 'movie', name: 'Caddyshack', year: '1980' }
      ]
    })
  })

  test('Level 5 - Challenge 4', t => {
    t.plan(1)
    t.equals(
      challenge4().join(''),
      '<li>Ghostbusters - 1984</li><li>Caddyshack - 1980</li><li>Groundhog Day - 1993</li>'
    )
  })
}