// ==UserScript==
// @name         ChatShare节点和激活码助手🔥
// @namespace    https://chatshare.ren/
// @version      1.0.0
// @description  检测ChatShare节点状态，选择最快节点，提供chatshare激活码方式，也可以直接切换到任意节点。
// @author       ChatShare
// @match        *://chatgpt.com/*
// @match        *://chatshare.com/*
// @match        *://chatshare.biz/*
// @match        *://chatshare.ren/*
// @match        *://*.chatshare.biz/*
// @match        *://*.chatshare.one/*
// @match        *://chatshare.hk/*
// @match        *://chatshare.online/*
// @match        *://chatshare.pro/*
// @match        *://web.chatgpts.asia/*
// @match        *://chatshare.art/*
// @match        *://chatshare.cc/*
// @match        *://chatshare.art/*
// @match        *://chatshare.me/*
// @match        *://chatshare.art/*
// @match        *://chatshare.top/*
// @match        *://chatshare.work/*
// @match        *://chatshare.cn/*
// @grant        GM_xmlhttpRequest
// @connect      chatshare.biz
// @connect      node1.chatshare.biz
// @connect      node2.chatshare.biz
// @connect      node3.chatshare.biz
// @connect      node4.chatshare.biz
// @connect      node5.chatshare.biz
// @connect      node6.chatshare.biz
// @connect      node.chatshare.one
// @connect      web.chatgpts.asia
// @run-at       document-start
// @noframes
// @icon           data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAFSElEQVR4nMWXX4hdVxXGf2vfe89kJg61ia0DYzMTMWnoQ0FJtKmtJsFixT8DBSmYtGMLgq0PCqMEKwmxYzSGyUPBB7XRNi0FC6JtwYovgcS0klJD8SHakoExYhLQFkwn9/aeOfv7fDi3SStJ5o4muN4O7L32b33rz94H/s8WS10cvR3yVQaY++wnkESkwDK2sMy1EwXDtzRRziBhu+dGDG48smSA5kUP//wmAFIkrNwiGMOsBzYAQwTzEEeBY8BJO1fYtF+4laGPv/i/Afz1C1sAYwngZiKmsDcDI0DrHUtL4DRwMGAmUnVcCtpHPsrQbS/1DZDe+VFHblKziIjYBjwD3Iu5ARBwBjgJnAkwMAa+z+ZZqXEX8VZg0T784aUDzH3uk0DtVQvlVsMjwGpMB3gauAu8ieB2YDPwxR5gF/gQ+MeoNUFzACI4d+imvgDOp0BVRWo2AW62eRi8wvY/wNtrgGhDL+7a/gIcBLYBu4HrsPdSzr8K/JlcLk2BaCQstSxN2VptuYO93an7WES0UyORGg1Wfu0QKivyQhfb56yhn4B3Ynew1kD1oDTfJF20vi8NYBvjMVubbWHrOdtPhwaAYPVvfs8Hf1u32bJbDtXVbgFvAj4AOgTGzhPhGMdV/wCvbtmAJSyttzRiuWv7CdttAlY/f/iimwdvfQGiAfmtczg/jnOJ8/txtRbnvgAu6FSPtg1AC3wGPAvgWGRYqiSowLwC1Ru4GoFyFPc3ZM8DfGPLB1jZXlhe74sS6AAc+O6vL+tg6LaX2LP/SSA6tkpcYeee36/0D/C7Ve9BwZs97iLMEMDAE5N07z1wSQebvl/y3KkAGDIUsrHpRp8ACeDGw38kZdPMPtrILhvZ1yZ5TZJxvnwuW40GzSSaDa1vJq1oJXVbKZ9qpv5qoO6Cqr5ULB+zfNrygOX7LS+PlCgeu+eimz/1w0yWaTTScIqYTEERcDoiXovFauddAAA22CeRDyKD/Bnkbd32PNgUj09S/GwrUMt+x14hiWVFI1LEVyPidggi4hfOnuv3nr8AEGC5sj1j+4TtAcu7i4HlDwLLqRawMmtmnidn6JYLGIa7C/mbwHeAgYATQexPjVCVxcZd7SUACDCEfRyznXoMr8Sawf4lcDdwI7AKWAdss/0r2dOyr6kFpCn7hiyPRlDY5mM7z10W4F1KFT+/p6ZwDkgT2HuN19Tz3yXWG+NnJ8uR9h0FSStSRAFBwAmbpu3xbP/T9rzkp2zvtt2RzcvfG15EAaC8/8m6FkgmpWdsTyD/COtv9esnj1haZXvEtiXP2d5jc6es+3qHv8/2uO1v2d4hedA2H/n2vxZX4LwS+78E1PcDqprAOPZao9Gxs5PNkc6dXUKnIuI1Z8+lRijLo8AR2+OWqeeBS8n7bE8bd2x4Zc97FwcAaP307vqyiXi7QzBi7OyXGel8GkJEBAFUWUREIXlnL/LCvgBheZ9h2lLHyvxp5rrFAZZiG3e16zliBm3vsD0lu6i5ja0awppWrjrKmeOPjAL/UQP/rf1h11BPJHckT/dkL+vDjeXC0pRy3qGcB22x9oHZKwcAcPTh5UimzrWnexGXlrCFlAvlakq5eiiX3eLtSXnFAABe3j1c/0PgTp1z77NUKmesjHMulKuttq9X/eq+sgAAx35wTZ0OqWNrWqr2KVelqoqcF3DOL1r5dStfHQCoW03K9ApuWrnam/PCnHN+StZDRHSK1jLgCnXBpeymr/8dS+SFbmH7eiu/TkQnNRrkqmL20XVXFwBg7QOzRASSsDJFaxndssPso+uu9tH92b8BowSyPc/iZtEAAAAASUVORK5CYII=
// @license        MIT

// ==/UserScript==

(function () {
  "use strict";

  if (window.top !== window) return;

  const PANEL_ID = "chatshare-userscript-node-panel";
  const NODES = [
    "chatshare.biz",
    "node1.chatshare.biz",
    "node2.chatshare.biz",
    "node3.chatshare.biz",
    "node4.chatshare.biz",
    "node5.chatshare.biz",
    "node6.chatshare.biz",
    "node.chatshare.one",
    "web.chatgpts.asia"
  ];
  const TIMEOUT = 6500;
  let panel = null;
  let latest = null;
  let mounted = false;

  const nodeUrl = (host) => `https://${host}/`;

  function isCollapsed() {
    try {
      return sessionStorage.getItem("chatshare-userscript-collapsed") === "1";
    } catch {
      return false;
    }
  }

  function setCollapsed(value) {
    try {
      sessionStorage.setItem("chatshare-userscript-collapsed", value ? "1" : "0");
    } catch {
      // Storage may be disabled; the current page still remains usable.
    }
  }

  function checkNode(host) {
    return new Promise((resolve) => {
      const started = performance.now();
      let settled = false;
      const finish = (result) => {
        if (settled) return;
        settled = true;
        resolve(result);
      };
      const timer = setTimeout(() => finish({
        host, url: nodeUrl(host), online: false, status: 0, latency: null, error: "timeout"
      }), TIMEOUT);

      GM_xmlhttpRequest({
        method: "GET",
        url: nodeUrl(host),
        timeout: TIMEOUT,
        onload(response) {
          clearTimeout(timer);
          finish({
            host,
            url: nodeUrl(host),
            online: response.status >= 200 && response.status < 500,
            status: response.status,
            latency: Math.round(performance.now() - started)
          });
        },
        onerror() {
          clearTimeout(timer);
          finish({
            host, url: nodeUrl(host), online: false, status: 0, latency: null, error: "unreachable"
          });
        },
        ontimeout() {
          clearTimeout(timer);
          finish({
            host, url: nodeUrl(host), online: false, status: 0, latency: null, error: "timeout"
          });
        }
      });
    });
  }

  async function checkAllNodes() {
    const results = await Promise.all(NODES.map(checkNode));
    results.sort((a, b) => {
      if (a.online !== b.online) return a.online ? -1 : 1;
      return (a.latency ?? Number.MAX_SAFE_INTEGER) - (b.latency ?? Number.MAX_SAFE_INTEGER);
    });
    return {
      checkedAt: Date.now(),
      nodes: results,
      best: results.find((node) => node.online) || null
    };
  }

  function createPanel() {
    if (document.getElementById(PANEL_ID)) return document.getElementById(PANEL_ID);
    const root = document.createElement("div");
    root.id = PANEL_ID;
    root.innerHTML = `
      <style>
        #${PANEL_ID} { all: initial !important; position: fixed !important; z-index: 2147483647 !important; top: 100px !important; right: 14px !important; width: 310px !important; color: #30343b !important; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif !important; display: block !important; visibility: visible !important; opacity: 1 !important; }
        #${PANEL_ID} * { box-sizing: border-box !important; }
        #${PANEL_ID} .box { overflow: hidden !important; border: 1px solid #e5e8eb !important; border-radius: 10px !important; background: #fff !important; box-shadow: 0 5px 24px rgba(27,37,48,.14) !important; }
        #${PANEL_ID} .header { display:flex; align-items:center; justify-content:space-between; padding:11px 13px; border-bottom:1px solid #eef0f2; background:#fafafa; }
        #${PANEL_ID} .title { display:flex; align-items:center; gap:7px; font-size:13px; font-weight:700; }
        #${PANEL_ID} .badge { padding:2px 6px; border-radius:3px; color:#fff; background:#6c757d; font-size:10px; font-weight:500; }
        #${PANEL_ID} .close { border:0; padding:0 2px; color:#737a83; background:transparent; font-size:18px; line-height:1; cursor:pointer; }
        #${PANEL_ID} .content { padding:12px 13px; }
        #${PANEL_ID} .summary { display:flex; align-items:center; justify-content:space-between; margin-bottom:9px; font-size:11px; }
        #${PANEL_ID} .summary strong { font-size:12px; }
        #${PANEL_ID} .muted { color:#8a9098; }
        #${PANEL_ID} .nodes { display:flex; flex-direction:column; gap:6px; height:117px; overflow-y:scroll; padding-right:3px; scrollbar-width:thin; scrollbar-color:#b8c1ca #f1f3f5; }
        #${PANEL_ID} .nodes::-webkit-scrollbar { width:7px; }
        #${PANEL_ID} .nodes::-webkit-scrollbar-thumb { border-radius:5px; background:#b8c1ca; }
        #${PANEL_ID} .node { position:relative; display:flex; align-items:center; gap:7px; padding:7px 8px; border:1px solid #eef0f2; border-radius:6px; font-size:11px; cursor:pointer; }
        #${PANEL_ID} .node:hover { border-color:#8db9e4; background:#eef6ff; }
        #${PANEL_ID} .node.best { border-color:#b9dfca; background:#f5fbf7; }
        #${PANEL_ID} .dot { width:6px; height:6px; flex:0 0 auto; border-radius:50%; background:#c2c7ce; }
        #${PANEL_ID} .online .dot { background:#31a765; } #${PANEL_ID} .offline .dot { background:#e05c61; }
        #${PANEL_ID} .name { flex:1; min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
        #${PANEL_ID} .meta { color:#8a9098; font-size:10px; white-space:nowrap; }
        #${PANEL_ID} .switch-hint { display:none; margin-left:5px; font-weight:700; color:#236aa5; }
        #${PANEL_ID} .node:hover .switch-hint { display:inline; }
        #${PANEL_ID} .buttons { display:grid; grid-template-columns:1.25fr 1fr; gap:7px; margin-top:10px; }
        #${PANEL_ID} button, #${PANEL_ID} a { min-height:33px; display:flex; align-items:center; justify-content:center; border:1px solid #dfe5ea; border-radius:6px; color:#39434d; background:#f8fafc; font-size:10px; font-weight:700; text-decoration:none; cursor:pointer; }
        #${PANEL_ID} button.primary { color:#fff; border-color:#3c82d4; background:#3c82d4; box-shadow:0 2px 5px rgba(60,130,212,.25); }
        #${PANEL_ID} button:disabled { opacity:.6; cursor:wait; }
        #${PANEL_ID} .links { display:grid; gap:6px; margin-top:10px; padding-top:10px; border-top:1px solid #eef0f2; }
        #${PANEL_ID} .links a { justify-content:flex-start; padding:0 10px; font-size:11px; }
        #${PANEL_ID} .contact { margin-top:10px; color:#737d87; text-align:center; font-size:10px; line-height:1.5; }
        #${PANEL_ID} .status-dot { position:fixed; top:100px; right:24px; width:24px; height:24px; display:none; border:3px solid #fff; border-radius:50%; background:#27b66a; box-shadow:0 2px 12px rgba(39,182,106,.85); cursor:pointer; animation:chatshare-userscript-pulse 1.35s ease-in-out infinite; }
        @keyframes chatshare-userscript-pulse { 0%,100% { opacity:.45; transform:scale(.82); } 50% { opacity:1; transform:scale(1); } }
        #${PANEL_ID}.collapsed { width:28px !important; }
        #${PANEL_ID}.collapsed .box { display:none !important; }
        #${PANEL_ID}.collapsed .status-dot { display:block; }
      </style>
      <div class="box">
        <div class="header"><div class="title">ChatShare 节点助手 <span class="badge">自动检测</span></div><button class="close" title="收起面板">×</button></div>
        <div class="content">
          <div class="summary"><strong class="summary-text">正在检测节点...</strong><span class="muted updated"></span></div>
          <div class="nodes"></div>
          <div class="buttons"><button class="primary use-best" disabled>🚀 使用最佳节点</button><button class="refresh">🔄 重新检测</button></div>
          <div class="links">
            <a href="https://fcai.me/chajian" target="_blank" rel="noopener">🧭 防失联导航页</a>
            <a href="https://chatshare.ren" target="_blank" rel="noopener">🔑 续费 / 购买激活码</a>
            <a href="https://261998.xyz" target="_blank" rel="noopener">💬 官方论坛</a>
          </div>
          <div class="contact">有问题可发送任意邮件至 chatshare@126.com</div>
        </div>
      </div>
      <div class="status-dot" title="展开 ChatShare 节点面板"></div>
    `;
    return root;
  }

  function render(data) {
    if (!panel || !document.contains(panel)) return;
    latest = data;
    const nodes = panel.querySelector(".nodes");
    nodes.innerHTML = data.nodes.map((node) => {
      const online = node.online ? "online" : "offline";
      const label = node.online ? `${node.latency} ms` : (node.error === "timeout" ? "超时" : "不可用");
      const best = data.best?.host === node.host;
      return `<div class="node ${online}${best ? " best" : ""}" data-url="${node.url}" title="切换至此节点"><span class="dot"></span><span class="name">${node.host}</span><span class="meta">${best ? "最佳 · " : ""}${label}<span class="switch-hint">切换至此节点</span></span></div>`;
    }).join("");
    panel.querySelector(".summary-text").textContent = data.best ? `最佳节点：${data.best.host}` : "暂时没有可用节点";
    panel.querySelector(".updated").textContent = new Date(data.checkedAt).toLocaleTimeString();
    panel.querySelector(".use-best").disabled = !data.best;
  }

  function bind() {
    if (!panel || panel.dataset.bound) return;
    panel.dataset.bound = "1";
    panel.querySelector(".close").onclick = () => { setCollapsed(true); panel.classList.add("collapsed"); };
    panel.querySelector(".status-dot").onclick = () => { setCollapsed(false); panel.classList.remove("collapsed"); };
    panel.querySelector(".refresh").onclick = runCheck;
    panel.querySelector(".use-best").onclick = () => { if (latest?.best) location.href = latest.best.url; };
    panel.querySelector(".nodes").onclick = (event) => {
      const item = event.target.closest(".node[data-url]");
      if (item?.dataset.url) location.href = item.dataset.url;
    };
    if (isCollapsed()) panel.classList.add("collapsed");
  }

  async function runCheck() {
    if (!panel) return;
    const refresh = panel.querySelector(".refresh");
    panel.querySelector(".summary-text").textContent = "正在检测节点...";
    refresh.disabled = true;
    try {
      render(await checkAllNodes());
    } catch {
      panel.querySelector(".summary-text").textContent = "检测失败，请点击重新检测";
    } finally {
      if (panel && document.contains(panel)) panel.querySelector(".refresh").disabled = false;
    }
  }

  function ensurePanel() {
    if (!document.documentElement) return;
    const existing = document.getElementById(PANEL_ID);
    if (existing) {
      panel = existing;
      bind();
      return;
    }
    panel = createPanel();
    document.documentElement.appendChild(panel);
    bind();
    if (!mounted) {
      mounted = true;
      runCheck();
    }
  }

  ensurePanel();
  const keepAlive = setInterval(ensurePanel, 500);
  const observer = new MutationObserver(ensurePanel);
  if (document.documentElement) observer.observe(document.documentElement, { childList: true, subtree: true });
  window.addEventListener("unload", () => {
    clearInterval(keepAlive);
    observer.disconnect();
  });
})();