index.js

const data = require('./data.json')
const { random, sampleSize: sample } = require('lodash')

const subjects = ['cats', 'birds', 'fish', 'ocean waves', 'trees', 'poppies']

const promptmaker = (opts = {}) => {
  const medium = 'medium' in opts ? opts.medium : sample(data.mediums)
  const subject = 'subject' in opts ? opts.subject : sample(subjects)
  const movement = 'movement' in opts ? opts.movement : sample(data.movements)
  const artist = 'artist' in opts ? opts.artist : sample(data.artists)
  const flavors =
    'flavors' in opts ? opts.flavors : sample(data.flavors, random(1, 3))
  let prompt = `${medium} of ${subject} ${movement}`

  // artist can be disabled by setting a falsy value
  if (artist) prompt += ` by ${artist}`

  // allow custom flavors
  if (flavors) prompt += `, ${flavors.join(', ')}`

  return prompt
}

promptmaker.mediums = data.mediums
promptmaker.subjects = subjects
promptmaker.artists = data.artists
promptmaker.movements = data.movements
promptmaker.flavors = data.flavors

module.exports = promptmaker