just-paja/radio-drama-queen

import { remove } from 'diacritics'

function filterNonEmpty (item) {
  return Boolean(item)
}

function filterUnique (item, index, src) {
  return src.indexOf(item) === index
}

export const clearSearch = search => {
  if (!search) {
    return ''
  }
  return remove(search)
    .trim()
    .replace(/[\s]/g, '-')
    .replace(/[-]+/g, '-')
}

export const splitSearchPatterns = search => clearSearch(search)
  .toLowerCase()
  .split('-')
  .filter(filterNonEmpty)
  .filter(filterUnique)

export const stringSearch = (sample, search, inclusive = false) => {
  const cleanSearch = splitSearchPatterns(search)
  const cleanSample = remove(sample.toLowerCase())
  const results = cleanSearch.map(pattern => cleanSample.search(pattern))
  const searchResult = {
    relevant: inclusive
      ? results.some(item => item !== -1)
      : results.every(item => item !== -1),
    results,
    searchSamples: cleanSearch
  }
  return searchResult
}