GSearch in Persian

GSearch in Persian can change Google search results to Persian language, without affecting the RTL (Right-to-Left) direction. (Based on the fork from tgxhx)
目前為 2023-07-18 提交的版本，檢視最新版本。
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// ==UserScript==
// @name         GSearch in Persian
// @name:fa      سوییچ جستو در سایت‌های فارسی
// @version      0.4
// @author       Amir
// @description  GSearch in Persian can change Google search results to Persian language, without affecting the RTL (Right-to-Left) direction. (Based on the fork from tgxhx)
// @homepage     https://github.com/Amm1rr/GSearch-Toggle/
// @namespace    amm1rr
// @description:fa با این اسکریپت به راحتی می‌توان بین جستجو فقط در سایت‌های فارسی در جستجوی گوگل سوییچ کرد، یک گزینه زیر جستجوی گوگل اضافه می شود. البته بدون تغییر در
// @require      http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
// @icon         https://www.google.com/favicon.ico
// @match        https://www.google.com/search*
// @exclude      https://www.google.com/maps*
// @grant        GM_addStyle
// ==/UserScript==

/*

Last Changes: (Sort by Date)

10/07/2023

- Excluded Google Map
- Added support for UK/US Google domains
- Added support for mobile, tablet, and desktop devices

*/

(function() {
    'use strict';

    // I just added this variable to check if the class is found for the first time, so there's no need to execute multiple times.
    var iFoundCounter = 0;

    // How to use:
    // if( isMobile.any() ) alert('Mobile');
    // To check to see if the user is on a specific mobile device:
    // if( isMobile.iOS() ) alert('iOS');
    const isMobile = {
        Android: function() {
            return navigator.userAgent.match(/Android/i);
        },
        BlackBerry: function() {
            return navigator.userAgent.match(/BlackBerry/i);
        },
        iOS: function() {
            return navigator.userAgent.match(/iPhone|iPad|iPod/i);
        },
        iPhone: function() {
            return navigator.userAgent.match(/iPhone/i);
        },
        Opera: function() {
            return navigator.userAgent.match(/Opera Mini/i);
        },
        Windows: function() {
            return navigator.userAgent.match(/IEMobile/i) || navigator.userAgent.match(/WPDesktop/i);
        },
        any: function() {
            return (isMobile.Android() || isMobile.BlackBerry() || isMobile.iOS() || isMobile.Opera() || isMobile.Windows());
        },
        mobile: function() {
            return (isMobile.Android() || isMobile.BlackBerry() || isMobile.iPhone() || isMobile.Opera());
        }
    };

    // //-- Wait for the "Tools" button
    // if (isMobile.mobile()){
    //     waitForKeyElements('div[jsname="yIZuWb"]', onPageLoadedMobile);
    // }else{
    //     waitForKeyElements(".PuHHbb", onPageLoaded);
    // }


    function CreateSeprator(){
        var seperator = document.createElement("div");
            seperator.classList.add("IDFSOe");
            //-- Class=> TZqsAd

            return seperator;
    }

    function CreateLink(){
        var aTag = document.createElement('a');
        var query = new URLSearchParams(decodeURIComponent(location.search));
        const isFarsi = (query.get('lr') || '').toLowerCase() === 'lang_fa';
        if (isFarsi) {
            query.delete('lr');
            query.delete('tbs');
            aTag.textContent = 'Clear';
        } else {
            query.set('lr', 'lang_fa');
            query.set('tbs', 'lr:lang_fa');
            aTag.textContent = 'Persian';
        }

        const href = `${location.origin}${location.pathname}?${query.toString()}`;
        aTag.setAttribute('href', href);
        aTag.classList.add('hdtb-tl');
        aTag.style.cssText = 'color: #5f6368;text-decoration: none;';

        return aTag;
    }


    function onPageLoadedMobile() {
        onPageLoaded("Mobile")
    }


    // Function to be executed after the page has completely loaded
    function onPageLoaded(arg) {

        if (arg=="Mobile"){

            //-- Mobile
            var ToolsButton = document.querySelector('div[jsname="yIZuWb"]');

        }else{

            //-- Desktop
            var ToolsButton = document.querySelector(".PuHHbb");

            //-- Tablet
                if (!ToolsButton) {
                    ToolsButton = document.querySelector('.hdtb-tl-sel');
                    // alert("1." + ToolsButton);
                }

                if (!ToolsButton) {
                    ToolsButton = document.querySelector('#hdtb-tls');
                    // alert("2." + ToolsButton);
                }

                if (!ToolsButton) {
                    ToolsButton = document.querySelector('.TZqsAd');
                    // alert("3." + ToolsButton);
                }
            //-- Tablet
        }

        if (ToolsButton) {
            if (iFoundCounter > 1){return}
        }
        iFoundCounter++;

        var seperator = CreateSeprator();
        var alink = CreateLink();

        ToolsButton.insertAdjacentElement('afterend', seperator);
        seperator.insertAdjacentElement('afterend', alink);
    }


    //document.addEventListener('DOMContentLoaded', onPageLoaded);
    window.onload = onPageLoaded;

})();