// ==UserScript==
// @name         Site Quick Open网页快开
// @namespace    http://tampermonkey.net/
// @version      0.8
// @description  Click on the lower left button in the search engine, quickly open all websites.(Please allow the browser to redirect many times). 点击左下角按钮帮您快速打开搜索引擎的所有链接(请先允许浏览器多次重定向)
// @author       Exisi
// @match        *.baidu.com/s*
// @match        *.google.com.*/search*
// @match        *.google.com/search*
// @match        *.google.com.hk/search*
// @match        *.bing.com/search*
// @match        *.yahoo.com/search*
// @grant        none
// @downloadURL none
// ==/UserScript==
(function () {
    // ready
    let data = [{
            name: "bing",
            aNodeClass: "b_title",
            contentId: "b_content",
        },
        {
            name: "baidu",
            aNodeClass: "result c-container new-pmd",
            contentId: "wrapper",
        },
        {
            name: "google",
            aNodeClass: "yuRUbf",
            contentId: "main",
        },
        {
            name: "yahoo",
            aNodeClass: "compTitle options-toggle",
            contentId: "results",
        },
    ];
    // get the site name
    let url = window.location.href;
    let type = getSiteType(url);

    let item = document.getElementsByClassName(data[type].aNodeClass);
    if (item != null) {
        createButton(item);
    }
    // openlink
    function quickOpen(item) {
        for (const i in item) {
            let parentNode = item[i].parentNode;
            if (parentNode != null) {
                // check for the presence of the ublacklist chrome plugin
                let is_ub_blocked = parentNode.getAttribute("data-ub-blocked") ? 1 : 0;
                let ub_attr = parentNode.getAttribute("data-ub-blocked");
                // check for the presence of the ac-baidu script
                let is_ac_baidu_script = parentNode.getAttribute("ac-needhide") ? 1 : 0;
                let ac_attr = parentNode.getAttribute("data-ub-blocked");
                // get type
                let index = is_ub_blocked + is_ac_baidu_script;
                switch (index) {
                    case 0: // none
                        if (item[i].nodeType > 0) {
                            item[i].getElementsByTagName("a")[0].click();
                        }
                        break;
                    case 1: // ac_baidu or ub_blocked
                        if (ub_attr != null && ac_attr != null) {
                            if (item[i].nodeType > 0 && (ub_attr == "ub-blocked" || ac_attr == "1")) {
                                item[i].getElementsByTagName("a")[0].click();
                            }
                        }
                        break;
                    case 2: // ac_baidu and ub_blocked
                        if (ub_attr != null && ac_attr != null) {
                            if (item[i].nodeType > 0 && ub_attr == "ub-blocked" && ac_attr == "1") {
                                item[i].getElementsByTagName("a")[0].click();
                            }
                        }
                        break;
                }
            }
        }
    }
    //add button
    function createButton(item) {
        var btn = document.createElement("input");
        btn.setAttribute("type", "button");
        btn.setAttribute("value", "🚀");
        btn.setAttribute("id", "startBtn");
        btn.style.background = "pink";
        btn.style.color = "white";
        btn.style.fontWeight = "500";
        btn.style.width = "50px";
        btn.style.height = "50px";
        btn.style.borderRadius = "100px";
        btn.style.fontSize = "14px";
        btn.style.position = "fixed";
        btn.style.border = "1px pink solid";
        btn.style.bottom = 0;
        btn.style.left = 0;
        btn.style.outline = "none";
        btn.style.margin = "25px";
        btn.addEventListener("click", function () {
            quickOpen(item);
        });
        document.getElementById(data[type].contentId).append(btn);
    }
    //get site type
    function getSiteType(url) {
        for (let i in data) {
            if (url.search(data[i].name) > 0) {
                return i;
            }
        }
    }
})();