// ==UserScript==
// @name         搜索Tool
// @version      0.6.2
// @description  搜索引擎快速切换工具
// @author       lawchou
// @include      http*://*.bing.com/*
// @include      http*://*.google.com/*
// @include      http*://*.baidu.com/*
// @include      http*://*.sogou.com/*
// @include      http*://*.sogou.cn/*
// @include      http*://*.haoso.com/*
// @include      http*://*.so.com/*
// @include      http*://*.yandex.com/*
// @include      http*://*.metaso.cn/*
// @grant        GM_addStyle
// @grant        GM_setValue
// @grant        GM_getValue
// ==/UserScript==

(function () {
  'use strict';

  /* ---------- 默认 4 个引擎 ---------- */
  const DEFAULT_ENGINES = [
    { id: 'baidu',  name: '百度',  url: 'https://www.baidu.com/s?wd=%s',  color: '#2932e1' },
    { id: 'bing',   name: '必应',  url: 'https://cn.bing.com/search?q=%s', color: '#0078d4' },
    { id: 'google', name: 'Google', url: 'https://www.google.com/search?q=%s', color: '#4285f4' },
    { id: 'so',     name: '360',   url: 'https://www.so.com/s?q=%s', color: '#19b955' }
  ];
  const STORAGE_KEY = 'sp_engines';

  /* ---------- 工具 ---------- */
  function loadEngines() {
    try { return JSON.parse(GM_getValue(STORAGE_KEY, '[]')) || DEFAULT_ENGINES; }
    catch { return DEFAULT_ENGINES; }
  }
  function saveEngines(list) { GM_setValue(STORAGE_KEY, JSON.stringify(list)); }

  function isSearchPage() {
    const p = new URLSearchParams(location.search);
    return !!(p.get('q') || p.get('wd') || p.get('s'));
  }
  function getKeyword() {
    const p = new URLSearchParams(location.search);
    return p.get('wd') || p.get('q') || p.get('s') || '';
  }

  function currentEngineId() {
    const host = location.hostname.replace(/^www\./, '');
    if (host.includes('baidu')) return 'baidu';
    if (host.includes('bing'))  return 'bing';
    if (host.includes('google'))return 'google';
    if (host.includes('so.com') || host.includes('haoso')) return 'so';
    return null;
  }

  /* ---------- 样式（无背景图标） ---------- */
  GM_addStyle(`
    #sp-ac-container{position:fixed;right:55px;top:68%;z-index:999999;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;}
    #sp-toggle-btn{width:42px;height:42px;border-radius:50%;background:#34c0f1;border:none;color:#fff;font-size:18px;cursor:pointer;box-shadow:0 4px 10px rgba(0,0,0,.25);transition:transform .2s;}
    #sp-toggle-btn:hover{transform:scale(1.1);}
    #sp-toggle-btn.active{background:#ff6b35;}

    #sp-engine-list{
      position:absolute;bottom:60px;right:0;
      display:flex;flex-direction:column;gap:18px;
      opacity:0;pointer-events:none;transform:translateY(10px);
      transition:opacity .25s,transform .25s;
    }
    #sp-settings-btn{
      position:absolute;top:60px;right:0;
      width:42px;height:42px;border-radius:50%;border:none;background:#888;color:#fff;font-size:16px;cursor:pointer;
      opacity:0;pointer-events:none;transform:translateY(-10px);
      transition:opacity .25s,transform .25s;
    }
    .show{opacity:1!important;pointer-events:auto!important;transform:none!important;}

    /* 28×28 透明 favicon，无边框无背景 */
    .sp-engine-btn{
      width:42px;height:42px;border-radius:50%;border:none;
      background-color:transparent;                      /* 去掉背景色 */
      background-size:28px 28px;                         /* 放大图标 */
      background-repeat:no-repeat;
      background-position:center;
      cursor:pointer;
      transition:transform .2s;
    }
    .sp-engine-btn:hover{transform:translateX(-5px);}

    #sp-settings{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);width:340px;background:#fff;border-radius:8px;box-shadow:0 8px 30px rgba(0,0,0,.3);padding:20px;z-index:1000000;font-size:14px;}
    #sp-settings h3{margin:0 0 10px;}
    #sp-settings input{width:calc(100% - 8px);margin:4px 0 8px;padding:4px;border:1px solid #ccc;border-radius:4px;}
    #sp-settings .item{display:flex;justify-content:space-between;align-items:center;margin:4px 0;}
    #sp-settings .item span{flex:1;}
    #sp-settings .item button{background:#ff4d4f;color:#fff;border:none;border-radius:4px;padding:2px 6px;cursor:pointer;}
    #sp-settings .add-btn{background:#52c41a;color:#fff;border:none;border-radius:4px;padding:4px 8px;margin-top:8px;cursor:pointer;}
    #sp-settings .close-btn{position:absolute;top:8px;right:8px;background:transparent;border:none;font-size:18px;cursor:pointer;color:#666;}
  `);

  /* ---------- 主逻辑 ---------- */
  let hideTimer = null;
  let engines = loadEngines();
  if(JSON.stringify(engines) === '[]')
    {
   engines=DEFAULT_ENGINES
    }
  function MAIN() {
    if (!isSearchPage()) return;
    createPanel();
  }

  function createPanel() {
    const box = document.createElement('div');
    box.id = 'sp-ac-container';
    box.innerHTML = `
      <div id="sp-engine-list"></div>
      <button id="sp-toggle-btn" title="切换搜索引擎">⚡</button>
      <button id="sp-settings-btn" title="管理搜索引擎">⚙️</button>
    `;
    document.body.appendChild(box);

    const toggleBtn = document.getElementById('sp-toggle-btn');
    const engineList = document.getElementById('sp-engine-list');
    const settingsBtn = document.getElementById('sp-settings-btn');

    toggleBtn.addEventListener('click', () => {
      const expanded = toggleBtn.classList.toggle('active');
      engineList.classList.toggle('show', expanded);
      settingsBtn.classList.toggle('show', expanded);
      clearTimeout(hideTimer);
    });

    box.addEventListener('mouseleave', () => {
      hideTimer = setTimeout(() => {
        toggleBtn.classList.remove('active');
        engineList.classList.remove('show');
        settingsBtn.classList.remove('show');
      }, 2000);
    });
    box.addEventListener('mouseenter', () => clearTimeout(hideTimer));

    box.addEventListener('click', e => {
      const id = e.target.dataset.engine;
      if (id) {
        const obj = engines.find(v => v.id === id);
        if (obj) {
          const kw = encodeURIComponent(getKeyword());
          window.open(obj.url.replace('%s', kw), '_blank');
        }
      }
    });

    settingsBtn.addEventListener('click', openSettings);
    renderEngines();
  }

  function renderEngines() {
    const list = document.getElementById('sp-engine-list');
    list.innerHTML = '';
    const currentId = currentEngineId();
    engines
      .filter(e => e.id !== currentId)
      .slice(0, 4)
      .forEach(e => {
        const btn = document.createElement('button');
        btn.className = 'sp-engine-btn';
        btn.style.backgroundImage = `url(https://ico.scdn.io/api/api/favicon.php?url=${new URL(e.url).hostname})`;
        btn.dataset.engine = e.id;
        btn.title = e.name;
        list.appendChild(btn);
      });
  }

  function openSettings() {
    if (document.getElementById('sp-settings')) return;
    const panel = document.createElement('div');
    panel.id = 'sp-settings';
    panel.innerHTML = `
      <button class="close-btn" aria-label="关闭">&times;</button>
      <h3>管理搜索引擎</h3>
      <div id="sp-engines-list"></div>
      <input id="sp-new-name" placeholder="名称">
      <input id="sp-new-url"  placeholder="搜索链接 (含 %s)">
      <button class="add-btn">添加</button>
    `;
    document.body.appendChild(panel);
    panel.querySelector('.close-btn').onclick = () => panel.remove();

    function refresh() {
      const c = document.getElementById('sp-engines-list');
      c.innerHTML = '';
      engines.forEach((e, idx) => {
        const row = document.createElement('div');
        row.className = 'item';
        row.innerHTML = `<span>${e.name}</span><button data-idx="${idx}">❌</button>`;
        c.appendChild(row);
      });
    }
    refresh();

    panel.addEventListener('click', e => {
      const idx = e.target.dataset.idx;
      if (idx !== undefined) {
        engines.splice(idx, 1);
        saveEngines(engines);
        refresh();
        renderEngines();
      }
    });

    panel.querySelector('.add-btn').addEventListener('click', () => {
      const name = document.getElementById('sp-new-name').value.trim();
      const url  = document.getElementById('sp-new-url').value.trim();
      if (!name || !url) return alert('名称和搜索链接不能为空');
      const id = 'id_' + Date.now();
      engines.push({ id, name, url, color: '#'+Math.floor(Math.random()*16777215).toString(16) });
      saveEngines(engines);
      refresh();
      renderEngines();
      document.getElementById('sp-new-name').value = '';
      document.getElementById('sp-new-url').value  = '';
    });
  }

  MAIN();
})();