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Hitomi - Language & Tag Filtering

Filters search results by languages and tags

当前为 2019-01-19 提交的版本，查看 最新版本。

// ==UserScript==
// @name         Hitomi - Language & Tag Filtering
// @namespace    brazenvoid
// @version      2.4
// @author       brazenvoid
// @license      GPL-3.0-only
// @description  Filters search results by languages and tags
// @include      https://hitomi.la/*
// @run-at       document-idle
// ==/UserScript==

// Define languages to keep and tags to exclude here

let settings = {
    allowedGallleryTypes: [
        'artist cg',
        'doujinshi',
        'game cg',
        'manga',
    ],
	allowedLanguages: [
  	    "japanese",
  	    "english"
	],
	excludedTags: [
  	    "female:loli",
  	    "sample",
  	    "male:yaoi"
	]
}

// Translate gallery types to css selectors

let allowedGallerySelectors = [], allowedGalleryTypeSelector

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

// Formatting filters

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

  for (let index = 0; index < filters.length; index++) {

  	filters[index] = '[href="'+ prefix + encodeURIComponent(filters[index]) + suffix +'.html"]'
	}
	return filters.join(", ")
}

let languageFiltersSelector = formatFilters(settings.allowedLanguages, "/index-", "-1")
let tagFiltersSelector = formatFilters(settings.excludedTags, "/tag/", "-all-1")

// Filteration 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
  }
  return validationCheck
}

let validateType = function (gallery) {
  return allowedGallerySelectors.includes(gallery.className)
}

let complianceCallback = function(target) {
  
  let galleries = target.querySelectorAll('.manga, .dj, .acg, .cg'), removeGallery = false, languageTD, validationCheck
  
  for (let gallery of galleries) {

    validationCheck = validateType(gallery) && validateLanguage(gallery) && validateTags(gallery);
    
    if (!validationCheck) {
      gallery.remove()
    }
  }
}

// Setting up configuration and galleries list node

let galleriesList = document.querySelector('.gallery-content')
let observerConfig = {
  attributes: false,
  childList: true,
  subtree: false
}

// Checking compliance in case of gallery page

complianceCallback(galleriesList)

// Adding observer to check compliance of galleries on search pages

let observer = new MutationObserver(function(mutations, observer) {
  for(let mutation of mutations) {
    complianceCallback(mutation.target)
  }
})
observer.observe(galleriesList, observerConfig)