// ==UserScript==
// @name         聚合搜索引擎切换导航[手机版][移动端]
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  在搜索顶部显示一个聚合搜索引擎切换，模拟M浏览器和嗅觉浏览器的综合搜索引擎。专注手机网页搜索引擎切换，纯粹的搜索，但又有自用倾向。SearchJump、搜索跳转。
// @author       PunkJet

// @match        *://www.baidu.com/s*
// @match        *://m.baidu.com/s*
// @match        *://m.baidu.com/*/s*
// @include     *://www.baidu.com/*/s*
// @include     *://m.baidu.com/*/s*
// @match        *://duckduckgo.com/*
// @match        *://www.google.com/search*
// @match        *://www.google.com.hk/search*
// @match        *://www.bing.com/search*
// @match        *://cn.bing.com/search*
// @match        *://www.zhihu.com/search*
// @match        *://m.sogou.com/web/searchList.jsp*

// @match        *//m.sogou.com/web/*
// @match        *://m.douban.com/search*
// @match        *://yandex.com/search*
// @match        *://quark.sm.cn/s*

// @grant        unsafeWindow
// @grant        GM_getValue
// @grant        GM_setValue
// @grant        GM_addStyle
// @run-at       document-idle

// @license     MIT
// @downloadURL none
// ==/UserScript==

// 搜索网址配置
const searchUrlMap = [
  {
    name: "必应",
    searchUrl: "https://cn.bing.com/search?q=",
    searchkeyName: "q",
    matchUrl:"cn.bing.com",
  },
  {
    name: "百度",
    searchUrl: "https://baidu.com/s?wd=",
    searchkeyName: "wd",
    matchUrl:"baidu.com",
  },
  {
    name: "谷歌",
    searchUrl: "https://www.google.com/search?q=",
    searchkeyName: "q",
    matchUrl:"google.com",
  },
  {
    name: "知乎",
    searchUrl: "https://www.zhihu.com/search?q=",
    searchkeyName: "q",
    matchUrl:"zhihu.com",
  },
  {
    name: "豆瓣",
    searchUrl: "https://m.douban.com/search/?query=",
    searchkeyName: "query",
    matchUrl:"m.douban.com",
  },
  {
    name: "夸克",
    searchUrl: "https://quark.sm.cn/s?q=",
    searchkeyName: "q",
    matchUrl:"quark.sm.cn",
  },
  {
    name: "搜狗",
    searchUrl: "https://m.sogou.com/web/searchList.jsp?keyword=",
    searchkeyName: "keyword",
    matchUrl:"m.sogou.com/web",
  },
  {
    name: "yandex",
    searchUrl: "https://yandex.com/search/touch/?text=",
    searchkeyName: "text",
    matchUrl:"yandex.com",
  },
  {
    name: "DuckDuckGo",
    searchUrl: "https://duckduckgo.com/?q=",
    searchkeyName: "q",
    matchUrl:"duckduckgo.com",
  }
];



function getSearchKeywords(name) {
  const url_string = window.location.href; // window.location.href
  const url = new URL(url_string);
  return url.searchParams.get(name);
}

// JS获取url参数
function getQueryVariable(variable) {
  let query = window.location.search.substring(1);
  let pairs = query.split("&");
  for (let pair of pairs) {
    let [key, value] = pair.split("=");
    if (key == variable) {
      return decodeURIComponent(value);
    }
  }
  return null;
}


function getKeywords() {
  let keywords = "";
  const curUrl = window.location.href;
  for (let item of searchUrlMap) {
    //alert(item.matchUrl + "内容" + curUrl);
    if(curUrl.indexOf(item.matchUrl) >= 0 )
    {
        keywords = getSearchKeywords(item.searchkeyName);
        if (keywords === null)
        {

            if (item.name === "百度")
            {
                keywords = getSearchKeywords("word");
                break;
            }
        }
        break;
    }
  }
  //alert(keywords);
  return keywords;
}


function addSearchBox() {
  const boxDiv = document.createElement("div");
  boxDiv.id = "search-app-box";

  var ulList = document.createElement('ul');
  boxDiv.appendChild(ulList);
  let fragment = document.createDocumentFragment();//创建一个文档碎片，减少DOM渲染次数
  for (let index in searchUrlMap) {
    let liItem = document.createElement('li');
    let item = searchUrlMap[index];

    let a = document.createElement("a");
    a.innerText = item.name;

    if( window.location.href.indexOf(item.matchUrl) >= 0 ) {
        a.className = "search-engine-highlight";
    }
    a.href = item.searchUrl + getKeywords();

    liItem.appendChild(a);
    fragment.appendChild(liItem);
  }
  ulList.appendChild(fragment);
  document.getElementsByTagName('head')[0].after(boxDiv);

}

(function () {
  "use strict";

  const css =
    `
    #search-app-box {
      opacity:1 !important;
      position: fixed;
      display:flex;
      top: 0px;
      left: 0px;
      width: 100%;
      /*padding-left:4px;*/
      background-color: #FFFFFF !important;
      font-size: 15px;
      border-radius: 1px;
      z-index: 99999;
    }

    #search-app-box ul {
      list-style-type: none;
      margin: 0;
      padding: 0;
      overflow: hidden;
      /* background-color: #333;*/
      overflow-x: auto;
      list-style: none;
      white-space:nowrap;
    }

    #search-app-box ul::-webkit-scrollbar {
      display: none !important;
    }

    #search-app-box li {
      /*float: left;*/
      margin-left: 0px;
      display: inline-block;
    }


    #search-app-box ul li a {
      display: block;
	  color: #767676 !important;
      padding: 8px;
      text-decoration: none;
      font-weight:bold;
      /*background-color: hsla(211, 60%, 35%, .1);*/
      font-family:"-apple-system",HelveticaNeue,Roboto,Arial,sans-serif;
    }

    .search-engine-highlight  {
      background-color: hsla(211, 60%, 35%, .1) !important;
    }

    body{
	  margin-top: 35px !important;
    }


    .his-wrap-new .fix-wrap {
       top:35px !important;
    }

  `

  GM_addStyle(css);
  addSearchBox();

})();