Brazen Base Search Enhancer

Base class for search enhancement scripts

Από την 06/12/2020. Δείτε την τελευταία έκδοση.

Αυτός ο κώδικας δεν πρέπει να εγκατασταθεί άμεσα. Είναι μια βιβλιοθήκη για άλλους κώδικες που περιλαμβάνεται μέσω της οδηγίας meta // @require https://update.sleazyfork.org/scripts/416105/877459/Brazen%20Base%20Search%20Enhancer.js

// ==UserScript==
// @name         Brazen Base Search Enhancer
// @namespace    brazen
// @version      2.0.0
// @author       brazenvoid
// @license      GPL-3.0-only
// @description  Base class for search enhancement scripts
// @require      https://greasyfork.org/scripts/375557-base-resource/code/Base%20Resource.js?version=869326
// ==/UserScript==

const CONFIG_PAGINATOR_LIMIT = 'Pagination Limit'
const CONFIG_PAGINATOR_THRESHOLD = 'Pagination Threshold'
const OPTION_ALWAYS_SHOW_SETTINGS_PANE = 'Always Show Settings Pane'
const OPTION_DISABLE_COMPLIANCE_VALIDATION = 'Disable Item Compliance Validation'

const FILTER_TEXT_BLACKLIST = 'Blacklist'
const FILTER_TEXT_SANITIZATION = 'Text Sanitization Rules'
const FILTER_TEXT_WHITELIST = 'Whitelist'

class BrazenBaseSearchEnhancer
{
    static initialize ()
    {
        BrazenBaseSearchEnhancer.throwOverrideError()
    }

    static throwOverrideError ()
    {
        throw new Error('Method must be overridden.')
    }

    /**
     * @param {Object} options
     * @param {string} options.scriptPrefix
     * @param {string|string[]} options.itemClasses
     * @param {Object} options.paginator
     * @param {boolean} options.paginator.enable
     * @param {string} options.paginator.listSelector
     * @param {string} options.paginator.lastPageUrl
     * @param {Function|null} options.paginator.getPageNo
     * @param {Function|null} options.paginator.getPageUrl
     * @param {Function|null} options.paginator.afterPagination
     */
    constructor (options)
    {
        /**
         * Array of item compliance filters ordered in intended sequence of execution
         * @type {Function[]}
         * @protected
         */
        this._complianceFilters = []

        /**
         * @type {string[]}
         * @protected
         */
        this._itemClasses = Array.isArray(options.itemClasses) ? options.itemClasses : [options.itemClasses]

        /**
         * @type {string}
         * @protected
         */
        this._itemClassesSelector = '.' + this._itemClasses.join(',.')

        /**
         * Pagination manager
         * @type {{lastPageUrl: string, listSelector: string, paginatedPageNo: number, enable: boolean, lastPageNo: number, getPageNo: Function, getPageUrl: Function,
         *     currentPageNo: number, afterPagination: Function, targetElement: null|JQuery}}
         * @protected
         */
        this._paginator = {
            enable: options.paginator.enable,
            targetElement: null,
            currentPageNo: 0,
            lastPageNo: 0,
            lastPageUrl: options.paginator.lastPageUrl,
            listSelector: options.paginator.listSelector,
            paginatedPageNo: 0,
            afterPagination: options.paginator.afterPagination,
            getPageNo: options.paginator.getPageNo,
            getPageUrl: options.paginator.getPageUrl,
        }

        /**
         * @type {string}
         * @protected
         */
        this._scriptPrefix = options.scriptPrefix

        /**
         * @type {StatisticsRecorder}
         * @protected
         */
        this._statistics = new StatisticsRecorder(this._scriptPrefix)

        /**
         * @type {BrazenUIGenerator}
         * @protected
         */
        this._uiGen = new BrazenUIGenerator(this._scriptPrefix)

        /**
         * Local storage store with defaults
         * @type {ConfigurationManager}
         * @protected
         */
        this._configurationManager = ConfigurationManager.create(this._uiGen).
            addFlagField(OPTION_DISABLE_COMPLIANCE_VALIDATION, 'Disables all search filters.').
            addFlagField(OPTION_ALWAYS_SHOW_SETTINGS_PANE, 'Always show configuration interface.').
            addNumberField(CONFIG_PAGINATOR_LIMIT, 10, 1000, 'Make paginator ensure the specified number of minimum results.').
            addNumberField(CONFIG_PAGINATOR_THRESHOLD, 0, 50, 'Limit paginator to concatenate the specified number of maximum pages. Zero equates to infinite.').
            addRulesetField(FILTER_TEXT_BLACKLIST, '', null, (blacklistedWords, field) => {
                field.optimized = Utilities.buildWholeWordMatchingRegex(blacklistedWords)
                return blacklistedWords
            }).
            addRulesetField(FILTER_TEXT_SANITIZATION, '', (sanitizationRules) => {
                let sanitizationRulesText = []
                for (let substitute in sanitizationRules) {
                    sanitizationRulesText.push(substitute + '=' + sanitizationRules[substitute].join(','))
                }
                return sanitizationRulesText

            }, (sanitizationRulesText, field) => {
                let sanitizationRules = {}
                if (sanitizationRulesText.length) {

                    let fragments, validatedTargetWords
                    for (let sanitizationRule of sanitizationRulesText) {

                        if (sanitizationRule.includes('=')) {

                            fragments = sanitizationRule.split('=')
                            if (fragments[0] === '') {
                                fragments[0] = ' '
                            }

                            validatedTargetWords = Utilities.trimAndKeepNonEmptyStrings(fragments[1].split(','))
                            if (validatedTargetWords.length) {
                                sanitizationRules[fragments[0]] = validatedTargetWords
                            }
                        }
                    }

                    /**
                     * @type {{}}
                     */
                    field.optimized = {}
                    for (const substitute in sanitizationRules) {
                        field.optimized[substitute] = Utilities.buildWholeWordMatchingRegex(sanitizationRules[substitute])
                    }
                } else {
                    field.optimized = null
                }
                return sanitizationRules
            }).
            addRulesetField(FILTER_TEXT_WHITELIST, '', null, (whitelistedWords, field) => {
                field.optimized = Utilities.buildWholeWordMatchingRegex(whitelistedWords)
                return whitelistedWords
            })

        /**
         * @type {Validator}
         * @protected
         */
        this._validator = (new Validator(this._statistics))

        // Events

        /**
         * Operations to perform after script initialization
         * @type {Function}
         * @protected
         */
        this._onAfterInitialization = null

        /**
         * Operations to perform after UI generation
         * @type {Function}
         * @protected
         */
        this._onAfterUIBuild = null

        /**
         * Operations to perform before compliance validation. This callback can also be used to skip compliance validation by returning false.
         * @type {null}
         * @protected
         */
        this._onBeforeCompliance = null

        /**
         * Operations to perform before UI generation
         * @type {Function}
         * @protected
         */
        this._onBeforeUIBuild = null

        /**
         * Operations to perform after compliance checks, the first time a item is retrieved
         * @type {Function}
         * @protected
         */
        this._onFirstHitAfterCompliance = null

        /**
         * Operations to perform before compliance checks, the first time a item is retrieved
         * @type {Function}
         * @protected
         */
        this._onFirstHitBeforeCompliance = null

        /**
         * Get item lists from the page
         * @type {Function}
         * @protected
         */
        this._onGetItemLists = null

        /**
         * Logic to hide a non-compliant item
         * @type {Function}
         * @protected
         */
        this._onItemHide = (item) => item.hide(100)

        /**
         * Logic to show compliant item
         * @type {Function}
         * @protected
         */
        this._onItemShow = (item) => item.show(100)

        /**
         * Must return the generated settings section node
         * @type {Function}
         * @protected
         */
        this._onUIBuild = null

        /**
         * Validate initiating initialization.
         * Can be used to stop script init on specific pages or vice versa
         * @type {Function}
         * @protected
         */
        this._onValidateInit = () => true
    }

    /**
     * @param {Function} eventHandler
     * @param {*} parameters
     * @return {*}
     * @private
     */
    _callEventHandler (eventHandler, ...parameters)
    {
        if (eventHandler) {
            return eventHandler(...parameters)
        }
        return null
    }

    /**
     * Filters items as per settings
     * @param {JQuery} itemsList
     * @param {boolean} fromObserver
     * @protected
     */
    _complyItemsList (itemsList, fromObserver = false)
    {
        let items = fromObserver ? itemsList.filter(this._itemClassesSelector) : itemsList.find(this._itemClassesSelector)
        items.each((index, element) => {
            let item = $(element)
            if (typeof element['scriptProcessedOnce'] === 'undefined') {
                element.scriptProcessedOnce = false
                this._callEventHandler(this._onFirstHitBeforeCompliance, item)
            }

            this._validateItemCompliance(item)

            if (!element['scriptProcessedOnce']) {
                this._callEventHandler(this._onFirstHitAfterCompliance, item)
                element.scriptProcessedOnce = true
            }

            this._statistics.updateUI()
        })
        this._validatePaginationThreshold()
    }

    /**
     * @protected
     */
    _createSettingsFormActions ()
    {
        return this._uiGen.createFormSection().append([
            this._uiGen.createFormActions([
                this._uiGen.createFormButton('Apply', () => this._onApplyNewSettings(), 'Apply settings.'),
                this._uiGen.createFormButton('Save', () => this._onSaveSettings(), 'Apply and update saved configuration.'),
                this._uiGen.createFormButton('Reset', () => this._onResetSettings(), 'Revert to saved configuration.'),
            ]),
        ])
    }

    /**
     * @param {JQuery} UISection
     * @private
     */
    _embedUI (UISection)
    {
        UISection.on('mouseleave', (event) => {
            if (!this._configurationManager.getValue(OPTION_ALWAYS_SHOW_SETTINGS_PANE)) {
                $(event.currentTarget).hide(300)
            }
        })
        if (this._configurationManager.getValue(OPTION_ALWAYS_SHOW_SETTINGS_PANE)) {
            UISection.show()
        }
        this._uiGen.constructor.appendToBody(UISection)
        this._uiGen.constructor.appendToBody(this._uiGen.createSettingsShowButton('', UISection))
    }

    _onApplyNewSettings ()
    {
        this._configurationManager.update()
        this._validateCompliance()
    }

    _onResetSettings ()
    {
        this._configurationManager.revertChanges()
        this._validateCompliance()
    }

    _onSaveSettings ()
    {
        this._onApplyNewSettings()
        this._configurationManager.save()
    }

    /**
     * @param {boolean} firstRun
     * @protected
     */
    _validateCompliance (firstRun = false)
    {
        let itemLists = this._callEventHandler(this._onGetItemLists)
        if (!firstRun) {
            this._statistics.reset()
            itemLists.each((index, itemsList) => {
                this._complyItemsList($(itemsList))
            })
        } else {
            itemLists.each((index, itemList) => {
                ChildObserver.create().onNodesAdded((itemsAdded) => this._complyItemsList($(itemsAdded), true).observe(itemList))
                this._complyItemsList($(itemList))
            })
        }
    }

    /**
     * @param {JQuery} item
     * @protected
     */
    _validateItemCompliance (item)
    {
        let itemComplies = true

        if (!this._configurationManager.getValue(OPTION_DISABLE_COMPLIANCE_VALIDATION) && this._callEventHandler(this._onBeforeCompliance, item) !== false) {
            for (let complianceFilter of this._complianceFilters) {
                if (!complianceFilter(item)) {
                    itemComplies = false
                    break
                }
            }
        }
        itemComplies ? this._callEventHandler(this._onItemShow, item) : this._callEventHandler(this._onItemHide, item)
    }

    _validatePaginationThreshold ()
    {
        let paginatorLimit = this._configurationManager.getValue(CONFIG_PAGINATOR_LIMIT)
        let paginatorThreshold = this._configurationManager.getValue(CONFIG_PAGINATOR_THRESHOLD)

        if (this._paginator.enable &&
            paginatorThreshold &&
            (paginatorLimit <= 0 || (this._paginator.paginatedPageNo - this._paginator.currentPageNo <= paginatorLimit)) &&
            this._paginator.paginatedPageNo < this._paginator.lastPageNo
        ) {
            let compliantItems = this._paginator.targetElement.find(this._itemClassesSelector + ':visible')

            if (compliantItems.length < paginatorThreshold) {
                let nextPageUrl = this._paginator.getPageUrl(++this._paginator.paginatedPageNo)
                let sandbox = $('<div id="brazen-sandbox" hidden/>')

                sandbox.appendTo('body')
                sandbox.load(nextPageUrl + ' ' + this._paginator.listSelector, '', () => {
                    sandbox.find(this._itemClassesSelector).insertAfter(this._paginator.targetElement.find(this._itemClassesSelector + ':last'))
                    sandbox.remove()
                    this._paginator.afterPagination(this._paginator)
                })
            }
        }
    }

    /**
     * Initialize the script and do basic UI removals
     */
    init ()
    {
        if (this._callEventHandler(this._onValidateInit)) {

            this._configurationManager.initialize(this._scriptPrefix)

            if (this._paginator.enable) {
                this._paginator.targetElement = $(this._paginator.listSelector + ':first')
                this._paginator.currentPageNo = this._paginator.getPageNo(window.location.href)
                this._paginator.lastPageNo = this._paginator.getPageNo(this._paginator.lastPageUrl)
                this._paginator.paginatedPageNo = this._paginator.currentPageNo
            }

            this._callEventHandler(this._onBeforeUIBuild)
            this._embedUI(this._callEventHandler(this._onUIBuild))
            this._callEventHandler(this._onAfterUIBuild)

            this._configurationManager.updateInterface()

            this._validateCompliance(true)

            this._uiGen.updateStatus('Initial run completed.')

            this._callEventHandler(this._onAfterInitialization)
        }
    }
}