my anime tosho hack

my-anime-tosho-hack.js

const Maybe = folktale.maybe
const Result = folktale.result
const noop = () => {}
const { href: current } = document.location
const { compose, ifElse, any, curry, split, head, map, complement, allPass, is, chain, find, mapObjIndexed, type } = R
const stringIncludes = curry((neddles, haystack) => any(neddles, n => haystack.includes(n)))
const findByClass = className => Array.from(document.getElementsByClassName(className))
const safeContextQuery = curry((query, el) => Maybe.fromNullable(el.querySelector(query)))
const safeContextQueryMany = curry((query, el) => Array.from(el.querySelectorAll(query)))
const safeFindById = id => Maybe.fromNullable(document.getElementById(id))
const isSeriesPage = (url) => url.includes('/series')

const query = '?filter%5B0%5D%5Bt%5D=nyaa_class&filter%5B0%5D%5Bv%5D=trusted&order='
const animes = [
  { 
    name: 'Vinland Saga',
    link: 'https://animetosho.org/series/vinland-saga.13945',
  },
  { 
    name: 'Fruits Basket',
    link: 'https://animetosho.org/series/fruits-basket-1st-season.14490',
  },
  { 
    name: 'Carole & Tuesday',
    link: 'https://animetosho.org/series/carole-tuesday.13893',
  },
  { 
    name: 'Dr. Stone',
    link: 'https://animetosho.org/series/dr-stone.14491',
  },
  { 
    name: 'Fire Force',
    link: 'https://animetosho.org/series/enen-no-shouboutai.14488',
  },
]

const safeFunction = ifElse(is(Function), Result.Ok, e => Result.Error(type(e)))

const maker = curry((makerMap, mappable) => mapObjIndexed(
  (maybeF, key) => maybeF.matchWith({
    Ok: ({ value: f }) => f(mappable),
    Error: ({ value: type }) => {
      throw new TypeError(`Your value on prop "${key}" should be a function instead we got "${type}"`)
    },
  }),
  map(safeFunction, makerMap)
))

const isNotNaN = complement(Number.isNaN)
const isMagnetEl = el => el.innerText === 'Magnet'
const safeNumber = ifElse(allPass([is(Number), isNotNaN]), Maybe.Just, Maybe.Nothing)
const parseSize = compose(map(Number), Maybe.fromNullable, head, split(' '))
const findText = compose(map(el => el.innerText), safeContextQuery('.link > a'))
const findMagnet = compose(map(el => el.href), Maybe.fromNullable, find(isMagnetEl), safeContextQueryMany('.links > a'))
const findSize = compose(chain(parseSize), map(e => e.innerText), safeContextQuery('.size'))
const isHighQuality = stringIncludes(['780p', '1080p'])

const makeLinkObject = maker({
  text: findText,
  size: findSize,
  magnet: findMagnet,
})

const trace = prefix => item => {
  console.log(prefix, item)
  return item
}

const addAnimeToSideBar = (anime) => {
  const where = safeFindById('topbar_tagline')
  where.matchWith({
    Nothing: () => console.error('Element not found'),
    Just: ({ value: el }) => {
      const link = document.createElement('a')
      link.href = anime.link + query
      link.innerText = anime.name
      link.className = 'anime-link'
      el.parentNode.insertBefore(link, el.nextSibling)
    },
  })
}


animes.forEach(addAnimeToSideBar)

if (isSeriesPage(current)) {
  const html = `
    <div class="link-list">
    ${findByClass('home_list_entry').map(makeLinkObject).map(anime => (`
      <a href=${anime.magnet.getOrElse('NOT FOUND')} class="link-list__item">
        ${anime.text.getOrElse('NOT FOUND')} - ${anime.size.getOrElse('NOT FOUND')}
      </a>
    `)).join('')}
    </div>
  `
  document.body.insertAdjacentHTML('beforeend', html)
}