(function () {
  const toast = document.getElementById("toast");
  let settingsCache = null;
  let monitorTimer = null;
  let authState = { required: false, logged_in: true };

  async function apiFetch(url, opts) {
    const r = await fetch(url, opts);
    if (r.status === 401) {
      const next = encodeURIComponent(location.pathname + location.search);
      location.href = "/login?next=" + next;
      throw new Error("未登录");
    }
    return r;
  }

  async function initAuth() {
    try {
      const r = await fetch("/api/auth/status");
      authState = await r.json();
      const btn = document.getElementById("btn-logout");
      if (btn) btn.style.display = authState.required ? "" : "none";
      if (authState.required && !authState.logged_in) {
        location.href =
          "/login?next=" + encodeURIComponent(location.pathname + location.search);
        return false;
      }
      return true;
    } catch (_) {
      return true;
    }
  }

  function showToast(msg, isErr) {
    toast.textContent = msg;
    toast.style.borderColor = isErr ? "var(--red)" : "var(--border)";
    toast.classList.add("show");
    clearTimeout(showToast._t);
    showToast._t = setTimeout(() => toast.classList.remove("show"), 7000);
  }

  function esc(s) {
    return String(s)
      .replace(/&/g, "&")
      .replace(/</g, "&lt;")
      .replace(/>/g, "&gt;")
      .replace(/"/g, "&quot;");
  }

  function fmt(n, d) {
    if (n === null || n === undefined || Number.isNaN(Number(n))) return "—";
    return Number(n).toLocaleString(undefined, { maximumFractionDigits: d });
  }

  function pnlCls(v) {
    const n = Number(v);
    if (!Number.isFinite(n) || n === 0) return "";
    return n > 0 ? "pnl-pos" : "pnl-neg";
  }

  function currentPage() {
    const p = window.location.pathname.replace(/\/$/, "") || "/monitor";
    if (p.includes("settings")) return "settings";
    return "monitor";
  }

  function setActiveNav() {
    const page = currentPage();
    document.querySelectorAll(".top-nav a").forEach((a) => {
      a.classList.toggle("active", a.getAttribute("href").includes(page));
    });
    document.querySelectorAll(".page").forEach((el) => {
      el.classList.toggle("hidden", !el.id.includes(page));
    });
    if (page === "monitor") startMonitorPoll();
    else stopMonitorPoll();
    if (page === "settings") loadSettingsUI();
  }

  function stopMonitorPoll() {
    clearInterval(monitorTimer);
    monitorTimer = null;
  }

  function startMonitorPoll() {
    stopMonitorPoll();
    loadMonitorBoard();
    if (document.getElementById("auto-monitor").checked) {
      monitorTimer = setInterval(loadMonitorBoard, 5000);
    }
  }

  async function loadSettings() {
    const r = await apiFetch("/api/settings");
    settingsCache = await r.json();
    return settingsCache;
  }

  function enabledAccounts() {
    return (settingsCache?.exchanges || []).filter((x) => x.enabled);
  }

  /** 监控卡片列数：3 个一行；4 个 2×2；5/6 个两行（每行最多 3） */
  function syncMonitorGridColumns(gridEl, count) {
    if (!gridEl) return;
    let cols = 3;
    if (count <= 1) cols = 1;
    else if (count === 2) cols = 2;
    else if (count === 3) cols = 3;
    else if (count === 4) cols = 2;
    else cols = 3;
    gridEl.style.gridTemplateColumns = `repeat(${cols}, minmax(0, 1fr))`;
  }

  async function loadMonitorBoard() {
    const box = document.getElementById("monitor-grid");
    try {
      const r = await apiFetch("/api/monitor/board");
      const data = await r.json();
      const rows = data.rows || [];
      const online = rows.filter((x) => x.http_ok && (x.agent || {}).ok !== false).length;
      const pill = document.getElementById("sys-status");
      if (pill) {
        pill.textContent = rows.length ? `LINK ${online}/${rows.length}` : "NO DATA";
        pill.classList.toggle("warn", rows.length && online < rows.length);
      }
      document.getElementById("monitor-updated").textContent =
        "UPD " + (data.updated_at || "").replace("T", " ");
      const parts = rows.map(renderMonitorCard);
      box.innerHTML = parts.join("") || '<div class="err">无已启用账户</div>';
      syncMonitorGridColumns(box, rows.length);
      box.querySelectorAll(".btn-close-ex").forEach((btn) => {
        btn.onclick = () => closeOne(btn.dataset.id);
      });
      box.querySelectorAll(".btn-close-pos").forEach((btn) => {
        btn.onclick = () =>
          closeOnePosition(btn.dataset.exId, btn.dataset.symbol, btn.dataset.side);
      });
    } catch (e) {
      box.innerHTML = `<div class="err">${esc(e)}</div>`;
    }
  }

  function renderMonitorCard(row) {
    const ag = row.agent || {};
    const pos = Array.isArray(ag.positions) ? ag.positions : [];
    const hm = row.hub_monitor || {};
    const flaskOk = row.flask_ok !== false && hm.ok !== false;
    const keys = flaskOk ? hm.keys || [] : [];
    const orders = flaskOk ? hm.orders || [] : [];
    const trends = flaskOk ? hm.trends || [] : [];
    const kmap = {};
    (row.key_prices || []).forEach((k) => {
      kmap[k.id] = k;
    });
    let inner = "";
    const agOk = ag.ok !== false;
    const agErr = ag.error || row.error || "";
    if (!row.http_ok) {
      inner = `<div class="err">${esc(row.error || "子代理不可用")}</div>`;
    } else if (!agOk) {
      inner = `<div class="err">${esc(agErr || "子代理返回失败")}</div>`;
      inner += `<div class="empty-hint">请检查 PM2 子代理与 <code>${esc(row.agent_url || "")}/status</code></div>`;
    } else {
      inner = `<div class="stat-row">
        <div class="stat-box"><div class="stat-label">余额</div><div class="stat-value">${fmt(ag.balance_usdt, 2)} <small style="font-size:12px;color:var(--muted)">U</small></div></div>
        <div class="stat-box"><div class="stat-label">浮盈合计</div><div class="stat-value ${pnlCls(ag.total_unrealized_pnl)}">${fmt(ag.total_unrealized_pnl, 4)}</div></div>
      </div>`;
      inner += `<div class="section-title">交易所持仓</div>`;
      if (pos.length) {
        const posRows = pos
          .map((x) => {
            const symAttr = esc(x.symbol || "").replace(/"/g, "&quot;");
            const sideAttr = esc((x.side || "").toLowerCase()).replace(/"/g, "&quot;");
            return `<tr>
              <td>${esc(x.symbol)}</td>
              <td>${esc(x.side)}</td>
              <td>${fmt(x.contracts, 4)}</td>
              <td class="${pnlCls(x.unrealized_pnl)}">${fmt(x.unrealized_pnl, 4)}</td>
              <td class="td-actions"><button type="button" class="btn-close-pos danger" data-ex-id="${esc(row.id)}" data-symbol="${symAttr}" data-side="${sideAttr}">平仓</button></td>
            </tr>`;
          })
          .join("");
        inner += `<table class="data-table"><thead><tr><th>合约</th><th>方向</th><th>张数</th><th>浮盈</th><th>操作</th></tr></thead><tbody>${posRows}</tbody></table>`;
      } else {
        inner += `<div class="empty-hint">无持仓</div>`;
      }
      if (orders.length) {
        inner += `<div class="section-title">机器人单 · ${orders.length}</div>`;
        orders.forEach((o) => {
          inner += `<div class="list-line">${esc(o.symbol)} · ${esc(o.direction)} · 触发 ${o.trigger_price}</div>`;
        });
      }
      if ((row.capabilities || []).includes("key")) {
        inner += `<div class="section-title">关键位</div>`;
        if (!flaskOk) {
          const fe = row.flask_error || hm.msg || hm.error || "";
          const short =
            fe ||
            (hm.status === 404
              ? "HTTP 404：请重启各 crypto_* Flask"
              : "策略 Flask 未连通");
          inner += `<div class="err">${esc(short)}</div>`;
        } else if (!keys.length) {
          inner += `<div class="empty-hint">当前无记录</div>`;
        } else {
          keys.slice(0, 8).forEach((k) => {
            const kp = kmap[k.id] || kmap[String(k.id)] || {};
            const mt = k.monitor_type || k.type || "";
            let line = `${esc(k.symbol)} · ${esc(mt)} · ${k.upper} / ${k.lower}`;
            if (kp.price_display != null || kp.price != null) {
              line += ` · ${esc(kp.price_display != null ? kp.price_display : kp.price)}`;
            }
            line += ` · ${esc(kp.gate_summary || "-")}`;
            inner += `<div class="list-line">${line}</div>`;
          });
        }
      }
      if ((row.capabilities || []).includes("trend") && trends.length) {
        inner += `<div class="section-title">趋势计划 · ${trends.length}</div>`;
        trends.forEach((t) => {
          inner += `<div class="list-line">#${t.id} ${esc(t.symbol)} ${t.direction} · SL ${t.stop_loss} · TP ${t.take_profit}</div>`;
        });
      }
    }
    const online = row.http_ok && agOk;
    const cardCls = online ? "card-online" : "card-offline";
    const dotCls = online ? "ok" : "bad";
    const review = row.review_url
      ? `<a class="btn-link" href="${esc(row.review_url)}" target="_blank" rel="noopener">复盘</a>`
      : "";
    const flaskOpen = row.flask_url_browser || row.flask_url;
    const openFlask = flaskOpen
      ? `<a class="btn-link" href="${esc(flaskOpen)}" target="_blank" rel="noopener">实例</a>`
      : "";
    return `<div class="card ${cardCls}">
      <div class="card-head">
        <div>
          <div class="card-title-row">
            <span class="status-dot ${dotCls}" title="${online ? "在线" : "离线"}"></span>
            <div class="card-title">${esc(row.name)}</div>
          </div>
          <div class="card-sub">${esc(flaskOpen || "")}</div>
        </div>
        <div class="card-actions">
          ${openFlask}
          ${review}
          <button type="button" class="danger btn-close-ex" data-id="${esc(row.id)}">全平</button>
        </div>
      </div>
      <div class="card-body">${inner}</div>
    </div>`;
  }

  async function closeOnePosition(exchangeId, symbol, side) {
    const label = `${symbol} · ${side}`;
    if (!confirm(`确认对该账户市价平仓：${label}？`)) return;
    try {
      const r = await apiFetch(
        "/api/close/" + encodeURIComponent(exchangeId) + "/position",
        {
          method: "POST",
          headers: { "Content-Type": "application/json" },
          body: JSON.stringify({ symbol, side }),
        }
      );
      const j = await r.json();
      const pl = j.payload || {};
      const ok = j.ok && pl.ok !== false;
      const msg =
        (ok && pl.closed
          ? `已平仓 ${pl.closed.symbol} ${pl.closed.side} · 张数 ${pl.closed.amount}`
          : pl.error) || JSON.stringify(j, null, 2);
      showToast(msg, !ok);
      loadMonitorBoard();
    } catch (e) {
      showToast(String(e), true);
    }
  }

  async function closeOne(id) {
    if (!confirm("确认对该账户市价全平？")) return;
    try {
      const r = await apiFetch("/api/close/" + encodeURIComponent(id), { method: "POST" });
      const j = await r.json();
      showToast(JSON.stringify(j, null, 2), !r.ok);
      loadMonitorBoard();
    } catch (e) {
      showToast(String(e), true);
    }
  }

  async function closeAll() {
    const n = enabledAccounts().length;
    if (!confirm(`对 ${n} 个已启用账户执行紧急全平？`)) return;
    try {
      const r = await apiFetch("/api/close-all", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ exclude_ids: [] }),
      });
      const j = await r.json();
      showToast(JSON.stringify(j, null, 2), !r.ok);
      loadMonitorBoard();
    } catch (e) {
      showToast(String(e), true);
    }
  }

  async function loadSettingsMetaLine() {
    try {
      const r = await apiFetch("/api/settings/meta");
      const m = await r.json();
      const el = document.getElementById("settings-meta-line");
      if (!el) return;
      const parts = [];
      if (m.password_required) parts.push("已启用用户名+密码登录");
      else parts.push("未设 HUB_PASSWORD（反代公网暴露时建议设置 HUB_USERNAME + HUB_PASSWORD）");
      if (m.hub_bridge_token_set) parts.push("中控已配置 HUB_BRIDGE_TOKEN");
      else parts.push("中控未设 HUB_BRIDGE_TOKEN（实例需 APP_AUTH_DISABLED 或同令牌）");
      if (m.public_origin) parts.push("浏览器外链基址: " + m.public_origin);
      else parts.push("未设 HUB_PUBLIC_ORIGIN（复盘链接仅本机可开）");
      if ((m.env_disabled_ids || []).length) {
        parts.push("环境强制关闭 id: " + m.env_disabled_ids.join(", ") + "（改 .env 后须重启 hub）");
      } else {
        parts.push("HUB_DISABLED_IDS 未强制关闭任何账户");
      }
      el.textContent = parts.join(" · ");
    } catch (_) {}
  }

  function renderSettingsList(data) {
    const list = document.getElementById("settings-list");
    if (!list) return;
    list.innerHTML = (data.exchanges || [])
      .map((ex, idx) => renderSettingsCard(ex, idx))
      .join("");
    list.querySelectorAll(".btn-del-ex").forEach((btn) => {
      btn.onclick = () => {
        const i = Number(btn.dataset.idx);
        data.exchanges.splice(i, 1);
        settingsCache = data;
        renderSettingsList(data);
      };
    });
  }

  function loadSettingsUI() {
    loadSettingsMetaLine();
    loadSettings().then((data) => {
      renderSettingsList(data);
    });
  }

  function renderSettingsCard(ex, idx) {
    const caps = ex.capabilities || [];
    const envOff = ex.env_disabled
      ? '<span class="badge">环境变量强制关</span>'
      : "";
    return `<div class="settings-card" data-idx="${idx}" data-key="${esc(ex.key || ex.id || "")}">
      <div class="settings-card-head">
        <label class="chk-label"><input type="checkbox" class="ex-enabled" ${ex.enabled ? "checked" : ""} ${ex.env_disabled ? "disabled" : ""}/> 启用</label>
        ${envOff}
        <input class="ex-name" value="${esc(ex.name || "")}" placeholder="显示名称" />
      </div>
      <div class="settings-grid">
        <div class="field"><label>Flask URL</label><input class="ex-flask" value="${esc(ex.flask_url || "")}" /></div>
        <div class="field"><label>Agent URL</label><input class="ex-agent" value="${esc(ex.agent_url || "")}" /></div>
        <div class="field field-wide"><label>复盘链接（可空）</label><input class="ex-review" value="${esc(ex.review_url || "")}" placeholder="留空则自动生成 /records" /></div>
      </div>
      <div class="cap-chips">
        <label><input type="checkbox" class="cap-key" ${caps.includes("key") ? "checked" : ""}/> 监控关键位</label>
        <label><input type="checkbox" class="cap-trend" ${caps.includes("trend") ? "checked" : ""}/> 监控趋势计划</label>
      </div>
      <div class="settings-card-foot">
        <div class="field"><label>id</label><input class="ex-id" value="${esc(ex.id || "")}" /></div>
        <button type="button" class="danger btn-del-ex" data-idx="${idx}">删除账户</button>
      </div>
    </div>`;
  }

  function collectSettingsFromUI() {
    const rows = [...document.querySelectorAll("#settings-list .settings-card")];
    return {
      version: 1,
      exchanges: rows.map((card) => {
        const caps = [];
        if (card.querySelector(".cap-key").checked) caps.push("key");
        if (card.querySelector(".cap-trend").checked) caps.push("trend");
        const id = card.querySelector(".ex-id").value.trim();
        const stableKey = (card.dataset.key || id).trim();
        return {
          id: id,
          key: stableKey,
          name: card.querySelector(".ex-name").value.trim(),
          flask_url: card.querySelector(".ex-flask").value.trim(),
          agent_url: card.querySelector(".ex-agent").value.trim(),
          review_url: card.querySelector(".ex-review").value.trim(),
          enabled: card.querySelector(".ex-enabled").checked,
          capabilities: caps,
        };
      }),
    };
  }

  async function saveSettings() {
    const body = collectSettingsFromUI();
    try {
      const r = await apiFetch("/api/settings", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(body),
      });
      const j = await r.json();
      if (j.ok) {
        showToast("设置已保存（已写入 hub_settings.json）");
        if (j.settings) {
          settingsCache = j.settings;
          renderSettingsList(j.settings);
          loadSettingsMetaLine();
        } else {
          await loadSettingsUI();
        }
      } else showToast("保存失败", true);
    } catch (e) {
      showToast(String(e), true);
    }
  }

  document.getElementById("btn-logout").onclick = async () => {
    try {
      await fetch("/api/auth/logout", { method: "POST" });
    } catch (_) {}
    location.href = "/login";
  };

  document.getElementById("btn-monitor-refresh").onclick = loadMonitorBoard;
  document.getElementById("auto-monitor").onchange = startMonitorPoll;
  document.getElementById("btn-close-all").onclick = closeAll;
  document.getElementById("btn-settings-save").onclick = saveSettings;
  document.getElementById("btn-settings-reload").onclick = loadSettingsUI;
  document.getElementById("btn-settings-add").onclick = () => {
    const data = settingsCache || { exchanges: [] };
    const nid = String(Date.now() % 100000);
    data.exchanges.push({
      id: nid,
      key: "custom_" + nid,
      name: "新交易所",
      flask_url: "http://127.0.0.1:5000",
      agent_url: "http://127.0.0.1:15200",
      review_url: "",
      enabled: false,
      capabilities: ["key"],
    });
    settingsCache = data;
    renderSettingsList(data);
    showToast("已添加一行，请填写 URL 后点「保存设置」");
  };

  initAuth().then((ok) => {
    if (!ok) return;
    loadSettings().catch(() => {});
    setActiveNav();
    window.addEventListener("popstate", setActiveNav);
  });
})();