DuckDuckGo RTL Enhancer

Automatically applies RTL direction to DuckDuckGo results with Persian or Arabic text
Bezoek de website van de maker, stel een vraag, plaats een beoordeling of rapporteer dit script.
Regels afbreken
// ==UserScript==
// @name            DuckDuckGo RTL Enhancer
// @name:fa         داک‌داک‌گو با پشتیبانی راست به چپ
// @name:ar         داک داک جو - دعم الكتابة من اليمين إلى اليسار
// @version         1.0
// @description     Automatically applies RTL direction to DuckDuckGo results with Persian or Arabic text
// @description:fa  به طور خودکار جهت راست به چپ را برای نتایج جستجوی داک‌داک‌گو با متن فارسی اعمال می‌کند
// @description:ar  يطبق تلقائيًا اتجاه من اليمين إلى اليسار على نتائج بحث داك داك جو مع النص العربي
// @author          Zen
// @match           https://duckduckgo.com/*
// @run-at          document-start
// @license         MIT
// @supportURL      https://github.com/Zen-CloudLabs/UserScripts/issues
// @homepageURL     https://github.com/Zen-CloudLabs/UserScripts
// @namespace https://greasyfork.org/users/1425911
// ==/UserScript==

(function() {
    'use strict';
    
    if (localStorage.getItem("rtlAutoEnabled") === "false") {
        return;
    }

    const style = document.createElement('style');
    style.innerHTML = '@import url("https://fonts.googleapis.com/css2?family=Vazirmatn&display=swap");';
    document.head.appendChild(style);

    const oneYearFromNow = new Date();
    oneYearFromNow.setFullYear(oneYearFromNow.getFullYear() + 1);

    if (window.location.hostname === 'duckduckgo.com') {
        document.cookie = "t=Vazirmatn; domain=duckduckgo.com; path=/; expires=" + 
            oneYearFromNow.toUTCString() + "; secure; SameSite=Lax;";
    }

    const rtlCharRegex = /[\u0600-\u06FF\u0750-\u077F\u08A0-\u08FF]/g;
    const targetSelectors = '.PBQZNIcKgp0FJ_yxBVaB, .IwPq3HoxJc8guGUBwTKv';
    const excludedClass = 'JRDRiEf5NPKWK43sArdC';

    function processElement(element) {
        if (!element || element.dataset.rtlApplied || element.classList.contains(excludedClass)) {
            return;
        }

        const text = element.textContent.trim();
        if (!text) return;

        const cleanText = text.replace(/\s/g, '');
        const totalChars = cleanText.length;
        if (totalChars === 0) return;

        const rtlChars = cleanText.match(rtlCharRegex);
        const rtlCharCount = rtlChars ? rtlChars.length : 0;
        const rtlRatio = rtlCharCount / totalChars;

        if (rtlRatio >= 0.4) {
            element.style.direction = "rtl";
            element.dataset.rtlApplied = "true";
        }
    }

    function processAllElements() {
        document.querySelectorAll(targetSelectors).forEach(processElement);
    }

    function handleMutations(mutationsList) {
        for (const mutation of mutationsList) {
            if (mutation.type === 'childList') {
                mutation.addedNodes.forEach(node => {
                    if (node.nodeType === Node.ELEMENT_NODE) {
                        if (node.matches && node.matches(targetSelectors)) {
                            processElement(node);
                        }
                        node.querySelectorAll(targetSelectors).forEach(processElement);
                    }
                });
            }
            else if (mutation.type === 'attributes' && mutation.attributeName === 'class') {
                const target = mutation.target;
                if (target.matches && target.matches(targetSelectors)) {
                    processElement(target);
                }
            }
        }
    }

    const observer = new MutationObserver(handleMutations);
    const observerConfig = {
        childList: true,
        subtree: true,
        attributes: true,
        attributeFilter: ["class"]
    };

    function initialize() {
        processAllElements();
        observer.observe(document.body, observerConfig);
    }

    if (document.readyState !== 'loading') {
        initialize();
    } else {
        document.addEventListener("DOMContentLoaded", initialize);
    }

    setInterval(processAllElements, 500);
})();