Hitomi - Search & UI Tweaks

Search Filters & UI Manipulations
As of 2019-02-09. See the latest version.
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// ==UserScript==
// @name          Hitomi - Search & UI Tweaks
// @namespace     brazenvoid
// @version       2.7.0
// @author        brazenvoid
// @license       GPL-3.0-only
// @description   Search Filters & UI Manipulations
// @include       https://hitomi.la/*
// @require       https://greasyfork.org/scripts/375557-brazenvoid-s-base-resource/code/Brazenvoid's%20Base%20Resource.js?version=658367
// @run-at        document-idle
// ==/UserScript==

// Define languages to keep and tags to exclude here

let settings = {
  allowedGalleryTypes: [
    'artist cg',
    'doujinshi',
    'game cg',
    'manga',
  ],
  allowedLanguages: [
    'japanese',
    'english'
  ],
  excludedTags: [
    'anthology',
    'female:daughter',
    'female:dickgirls only',
    'female:females only',
    'female:mother',
    'sample',
    'male:father',
    'male:son',
    'male:yaoi',
  ],
  excludedTagGroups: [
    ['female:loli', 'female:sole female'],
    ['male:shota', 'male:sole male'],
  ],
  removeRelatedGalleries: true,
  showUIAlways: false,
  debugLogging: false,
}

// Translating filters into selectors
// -- Translate gallery types

let allowedGallerySelectors = [], allowedGalleryTypeSelector

for (let allowedGalleryType of settings.allowedGalleryTypes) {
  switch (allowedGalleryType) {
    case 'anime':
      allowedGalleryTypeSelector = 'anime'
      break
    case 'artist cg':
      allowedGalleryTypeSelector = 'acg'
      break
    case 'doujinshi':
      allowedGalleryTypeSelector = 'dj'
      break
    case 'game cg':
      allowedGalleryTypeSelector = 'cg'
      break
    case 'manga':
      allowedGalleryTypeSelector = 'manga'
      break
    default:
      continue
  }
  allowedGallerySelectors.push(allowedGalleryTypeSelector)
}

// -- Translate tag filters

function encodeURIComponentRFC3986(str) {
  return encodeURIComponent(str).replace(/[-!'()*]/g, function(c) {
    return '%' + c.charCodeAt(0).toString(16).toUpperCase()
  })
}

let formatFilters = function (filters, prefix, suffix, join) {

  let formatFilter = function (filter) {
    return '[href="' + prefix + encodeURIComponentRFC3986(filter) + suffix + '.html"]'
  }
  let index2
  for (let index = 0; index < filters.length; index++) {
    if (Array.isArray(filters[index])) {
      for (index2 = 0; index2 < filters[index].length; index2++) {
        filters[index][index2] = formatFilter(filters[index][index2])
      }
    } else {
      filters[index] = formatFilter(filters[index])
    }
  }
  return join ? filters.join(', ') : filters
}

let languageFiltersSelector = formatFilters(settings.allowedLanguages, '/index-', '-1', true)
let tagFiltersSelector = formatFilters(settings.excludedTags, '/tag/', '-all-1', true)
let tagGroupFiltersSelectors = formatFilters(settings.excludedTagGroups, '/tag/', '-all-1', false)

// Base Resources Initialization

const scriptPrefix = 'hitomi-sui-'

let storage = new LocalStore(scriptPrefix + 'settings', settings)
settings = storage.retrieve().get()

let logger = new Logger(settings.debugLogging)
let selectorGenerator = new SelectorGenerator(scriptPrefix)
let statistics = new StatisticsRecorder(logger, selectorGenerator)
let uiGenerator = new UIGenerator(settings.showUIAlways, selectorGenerator)

// Local Store Events

let refreshUI = function () {
  let store = this.get()

  document.getElementById(selectorGenerator.getSettingsInputSelector('Min Duration')).value = store.duration.minimum
  document.getElementById(selectorGenerator.getSettingsInputSelector('Min Rating')).value = store.rating.minimum
  document.getElementById(selectorGenerator.getSettingsInputSelector('Min Views')).value = store.views.minimum
}
storage.onDefaultsLoaded = refreshUI
storage.onRetrieval = refreshUI
storage.onUpdated = refreshUI

// Filtration logic

let validateLanguage = function (gallery) {

  let validationCheck = true

  if (settings.allowedLanguages.length > 0) {

    let languageTD = gallery.querySelector('tr:nth-child(3) > td:nth-child(2)')
    if (languageTD.querySelector('a') !== null) {
      validationCheck = languageTD.querySelectorAll(languageFiltersSelector).length > 0
    }
  }
  return validationCheck
}

let validateTags = function (gallery) {

  let validationCheck = true

  if (settings.excludedTags.length > 0) {
    validationCheck = gallery.querySelectorAll(tagFiltersSelector).length === 0
    statistics.record('Excluded Tags', validationCheck)
  }
  if (validationCheck && settings.excludedTagGroups.length > 0) {
    for (let tagGroupFilterSelectors of tagGroupFiltersSelectors) {
      validationCheck = gallery.querySelectorAll(tagGroupFilterSelectors.join(', ')).length < tagGroupFilterSelectors.length
      console.log(tagGroupFilterSelectors.join(', ') + ' = ' + validationCheck);
      if (!validationCheck) {
        break
      }
    }
    statistics.record('Excluded Tag Groups', validationCheck)
  }
  return validationCheck
}

let validateType = function (gallery) {
  let validationCheck = allowedGallerySelectors.includes(gallery.className);
  statistics.record('Excluded Tags', validationCheck)
  return validationCheck
}

let complianceCallback = function (target) {

  let galleries = target.querySelectorAll('.anime, .manga, .dj, .acg, .cg')
  let validationCheck

  for (let gallery of galleries) {

    validationCheck = validateType(gallery) && validateLanguage(gallery) && validateTags(gallery)

    if (!validationCheck) {
      gallery.remove()
    }
  }
}

// Script Run

let galleriesList = document.querySelector('.gallery-content')
let isGalleryPage = document.getElementById('dl-button') !== null

if (isGalleryPage && settings.removeRelatedGalleries) {
  galleriesList.remove()
} else {
  let observer = new ChildObserver(complianceCallback)
  observer.observe(galleriesList, true)
}