(function (global) {
  function fmtPnl(v) {
    if (v == null || v === "") return "—";
    const n = Number(v);
    if (!Number.isFinite(n)) return "—";
    return (n > 0 ? "+" : "") + n.toFixed(2) + " U";
  }

  function pnlClass(v) {
    const n = Number(v);
    if (!Number.isFinite(n) || n === 0) return "pnl-flat";
    return n > 0 ? "pnl-up" : "pnl-down";
  }

  function fmtPnlHtml(v) {
    return '<span class="' + pnlClass(v) + '">' + escapeHtml(fmtPnl(v)) + "</span>";
  }

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

  function formatExitBrief(p) {
    if (p && p.target_monitor_text && String(p.target_monitor_text).trim() && p.target_monitor_text !== "—") {
      return String(p.target_monitor_text).trim();
    }
    const parts = [];
    const tgt = Number(p && p.target_index);
    if (Number.isFinite(tgt) && tgt > 0) {
      const ot = String((p && p.opt_type) || "").toUpperCase();
      const side = ot === "P" ? "Put≤" : ot === "C" ? "Call≥" : "目标";
      parts.push(side + " " + tgt);
    }
    if (p && p.profit_exit_enabled) {
      const m = Number(p.profit_exit_mult);
      if (Number.isFinite(m) && m > 0) {
        parts.push(Math.abs(m - Math.round(m)) < 1e-9 ? Math.round(m) + "倍" : m + "倍");
      } else {
        parts.push("利润出场");
      }
    }
    return parts.length ? parts.join(" · ") : "未设出场";
  }

  function activeCondOrder(snap) {
    const list = snap && snap.cond_orders_active;
    if (Array.isArray(list) && list.length && list[0]) return list[0];
    if (snap && snap.cond_order) return snap.cond_order;
    if (snap && snap.cond_order_locked) return { status: "armed" };
    return null;
  }

  function condStatusLabel(st) {
    const map = { armed: "待命", triggering: "触发中", open: "持仓中" };
    return map[st] || "占用";
  }

  function condStatusClass(st) {
    if (st === "open") return "is-open";
    if (st === "triggering") return "is-trig";
    return "is-armed";
  }

  function condTagHtml(cond) {
    if (!cond) return "";
    const st = String(cond.status || "armed");
    return (
      '<span class="overview-cond-tag ' +
      condStatusClass(st) +
      '">条件单 · ' +
      escapeHtml(condStatusLabel(st)) +
      "</span>"
    );
  }

  function optSideClass(optType, instId) {
    const t = String(optType || "").toUpperCase();
    if (t === "P") return "opt-side-put";
    if (t === "C") return "opt-side-call";
    const id = String(instId || "").toUpperCase();
    if (id.indexOf("-P-") >= 0 || id.slice(-2) === "-P") return "opt-side-put";
    if (id.indexOf("-C-") >= 0 || id.slice(-2) === "-C") return "opt-side-call";
    return "";
  }

  function condWaitLine(cond) {
    if (!cond) return "条件单占用";
    const put = String(cond.opt_type || "").toUpperCase() !== "C";
    const uly = String(cond.underlying || "").trim();
    const side =
      String(cond.trigger_side || "").toLowerCase() === "lte"
        ? "下穿 ≤"
        : put
          ? "上穿 ≥"
          : "下穿 ≤";
    const px = cond.trigger_px != null && cond.trigger_px !== "" ? String(cond.trigger_px) : "";
    const bits = [];
    if (uly) bits.push(uly + " " + (put ? "Put" : "Call"));
    if (px) bits.push(side + " " + px);
    return bits.length ? bits.join(" · ") : "条件单占用";
  }

  function positionSummary(brief, cond) {
    const list = brief || [];
    if (!list.length) {
      if (cond) {
        const sideCls = optSideClass(cond.opt_type, "");
        return (
          '<div class="overview-cond-wait' +
          (sideCls ? " " + sideCls : "") +
          '">' +
          '<div class="overview-cond-wait-line">' +
          escapeHtml(condWaitLine(cond)) +
          "</div></div>"
        );
      }
      return '<span class="muted">暂无持仓</span>';
    }
    const opened = cond && String(cond.opened_inst_id || "").trim();
    const tagOpen = !!(cond && String(cond.status || "") === "open");
    const items = list.slice(0, 8).map(function (p) {
      const id = p.inst_id || "";
      const sheets = escapeHtml(String(p.sheets != null ? p.sheets : "—"));
      const fromCond = tagOpen && (!opened || opened === id);
      const sideCls = optSideClass(p.opt_type, id);
      return (
        '<li class="' +
        sideCls +
        '">' +
        escapeHtml(id) +
        " · " +
        sheets +
        "张 · " +
        fmtPnlHtml(p.pnl_usdt) +
        (fromCond ? '<span class="overview-cond-src">条件单</span>' : "") +
        "</li>"
      );
    });
    const more =
      list.length > 8
        ? '<li class="muted">…共 ' + list.length + " 笔</li>"
        : "";
    return "<ul class=\"pos-brief\">" + items.join("") + more + "</ul>";
  }

  function exitSummary(brief) {
    const list = brief || [];
    if (!list.length) return '<span class="muted">—</span>';
    const items = list.slice(0, 8).map(function (p) {
      const exitText = formatExitBrief(p);
      const exitCls = exitText === "未设出场" ? "exit-unset" : "exit-set";
      return '<li class="' + exitCls + '">' + escapeHtml(exitText) + "</li>";
    });
    const more =
      list.length > 8
        ? '<li class="muted">…共 ' + list.length + " 笔</li>"
        : "";
    return '<ul class="pos-brief exit-brief">' + items.join("") + more + "</ul>";
  }

  function closeActionButtons(brief, instanceId, online) {
    const list = (brief || []).filter(function (p) {
      return !!(p && p.inst_id);
    });
    if (!online) {
      return (
        '<button type="button" class="btn btn-close-disabled" disabled title="实例离线">平仓</button>'
      );
    }
    if (!list.length) {
      return (
        '<button type="button" class="btn btn-close-disabled" disabled title="暂无持仓">平仓</button>'
      );
    }
    return list
      .slice(0, 8)
      .map(function (p) {
        const id = p.inst_id || "";
        const invalid = !!(
          p.bid_invalid ||
          (p.bid_px == null && (p.bid_sz == null || p.bid_sz === ""))
        );
        const reason = (p.bid_invalid_reason || "买一无效,禁止平仓").toString();
        const tip = list.length > 1 ? id + " · 买一限价全平" : "买一限价全平";
        if (invalid) {
          return (
            '<button type="button" class="btn btn-danger" disabled title="' +
            escapeHtml(reason) +
            '">平仓</button>'
          );
        }
        return (
          '<button type="button" class="btn btn-danger" data-close-inst="' +
          encodeURIComponent(String(instanceId)) +
          '" data-close-opt="' +
          encodeURIComponent(id) +
          '" title="' +
          escapeHtml(tip) +
          '">平仓</button>'
        );
      })
      .join("");
  }

  function fmtBidPx(v) {
    if (v == null || v === "") return "—";
    const n = Number(v);
    if (!Number.isFinite(n)) return "—";
    let s = n.toFixed(4).replace(/\.?0+$/, "");
    return s || "0";
  }

  function isLiquidityWeak(p) {
    if (!p) return false;
    if (p.liquidity_ok === false || p.bid_invalid) return true;
    const uncovered = Number(p.uncovered_sheets);
    return Number.isFinite(uncovered) && uncovered > 0;
  }

  function bidLiquidityLine(p) {
    if (p.bid_invalid || (p.bid_px == null && (p.bid_sz == null || p.bid_sz === ""))) {
      const reason = (p.bid_invalid_reason || "无买一/残档").toString();
      const short = reason.length > 18 ? reason.slice(0, 18) + "…" : reason;
      return { text: short, weak: true };
    }
    const px = fmtBidPx(p.bid_px);
    const sz = p.bid_sz != null ? String(p.bid_sz) : "—";
    const uncovered = Number(p.uncovered_sheets);
    let text = px + " / " + sz + "张";
    const weak = isLiquidityWeak(p);
    if (Number.isFinite(uncovered) && uncovered > 0) {
      text += "(差" + uncovered + ")";
    }
    return { text: text, weak: weak };
  }

  function bidLiquiditySummary(brief) {
    const list = brief || [];
    if (!list.length) return '<span class="muted">—</span>';
    const items = list.slice(0, 8).map(function (p) {
      const line = bidLiquidityLine(p);
      const cls = line.weak ? "liq-warn" : "liq-ok";
      return '<li class="' + cls + '">' + escapeHtml(line.text) + "</li>";
    });
    const more =
      list.length > 8
        ? '<li class="muted">…共 ' + list.length + " 笔</li>"
        : "";
    const anyWeak = list.some(isLiquidityWeak);
    const wrapCls = anyWeak ? "pos-brief liq-brief liq-brief--warn" : "pos-brief liq-brief";
    return '<ul class="' + wrapCls + '">' + items.join("") + more + "</ul>";
  }

  function fmtMoneyU(v) {
    if (v == null || v === "") return "—";
    const n = Number(v);
    if (!Number.isFinite(n)) return "—";
    return n.toFixed(2) + " U";
  }

  function fmtRatioPct(v) {
    if (v == null || v === "") return "—";
    const n = Number(v);
    if (!Number.isFinite(n)) return "—";
    return n.toFixed(2) + "%";
  }

  function premiumCell(snap) {
    const prem = snap.premium || {};
    const paid = prem.paid_usdt;
    const equity = prem.equity_usdt;
    const cash = prem.cash_usdt;
    const tipParts = [];
    if (cash != null) tipParts.push("余额 " + fmtMoneyU(cash));
    if (paid != null) tipParts.push("开仓占用 " + fmtMoneyU(paid));
    if (equity != null) tipParts.push("合计(余额+占用) " + fmtMoneyU(equity));
    const tip = tipParts.join(" · ") || "账户资金暂无";
    return (
      '<span title="' +
      escapeHtml(tip) +
      '">' +
      escapeHtml(fmtMoneyU(paid)) +
      "</span>"
    );
  }

  function premiumRatioCell(snap) {
    const prem = snap.premium || {};
    const ratio = prem.ratio_pct;
    const tip =
      prem.paid_usdt != null && prem.equity_usdt != null
        ? "开仓占用 " +
          fmtMoneyU(prem.paid_usdt) +
          " / (余额+占用) " +
          fmtMoneyU(prem.equity_usdt)
        : "";
    return (
      '<span title="' +
      escapeHtml(tip) +
      '">' +
      escapeHtml(fmtRatioPct(ratio)) +
      "</span>"
    );
  }

  function renderRow(row) {
    const snap = row.snapshot || {};
    const inst = snap.instance || {};
    const pnl =
      snap.pnl && snap.pnl.unrealized_usdt != null
        ? snap.pnl.unrealized_usdt
        : snap.upl_total_usdc;
    const brief = snap.positions_brief || snap.positions || [];
    const cond = activeCondOrder(snap);
    const online = !!row.online;
    const status = online
      ? '<span class="status-on">在线</span>'
      : '<span class="status-off">离线</span>';
    const err = row.error
      ? '<div class="muted">错误: ' + escapeHtml(row.error) + "</div>"
      : "";
    return (
      "<tr>" +
      "<td><strong>" +
      escapeHtml(row.name || "") +
      "</strong>" +
      condTagHtml(cond) +
      err +
      "</td>" +
      "<td>" +
      status +
      "</td>" +
      "<td>" +
      (function () {
        const m = String(inst.mode || "").toLowerCase();
        if (m === "sim" || m === "live") {
          return (
            '<span class="overview-mode-tag overview-mode-tag--' +
            m +
            '">' +
            escapeHtml(m) +
            "</span>"
          );
        }
        return escapeHtml(inst.mode || "—");
      })() +
      "</td>" +
      "<td>" +
      fmtPnlHtml(pnl) +
      "</td>" +
      "<td>" +
      premiumCell(snap) +
      "</td>" +
      "<td>" +
      premiumRatioCell(snap) +
      "</td>" +
      "<td>" +
      positionSummary(brief, cond) +
      "</td>" +
      "<td>" +
      exitSummary(brief) +
      "</td>" +
      "<td>" +
      bidLiquiditySummary(brief) +
      "</td>" +
      '<td class="muted">' +
      escapeHtml(row.pulled_at || "—") +
      "</td>" +
      '<td><div class="overview-actions">' +
      '<a class="btn" href="/desk?id=' +
      encodeURIComponent(row.id) +
      '">打开</a>' +
      closeActionButtons(brief, row.id, online) +
      "</div></td>" +
      "</tr>"
    );
  }

  async function requestClose(btn) {
    const instanceId = decodeURIComponent(btn.getAttribute("data-close-inst") || "");
    const optId = decodeURIComponent(btn.getAttribute("data-close-opt") || "");
    if (!instanceId || !optId) return;
    if (
      !confirm(
        "确认向该客户端下发买一限价全平?\n\n合约: " +
          optId +
          "\n\n无效买一将被拒绝;下单在客户端本地执行。"
      )
    ) {
      return;
    }
    const oldText = btn.textContent;
    btn.disabled = true;
    btn.textContent = "平仓中…";
    try {
      const rr = await fetch("/api/instances/" + encodeURIComponent(instanceId) + "/options/close", {
        method: "POST",
        headers: { "Content-Type": "application/json", Accept: "application/json" },
        body: JSON.stringify({ inst_id: optId }),
      });
      let dd = {};
      try {
        dd = await rr.json();
      } catch (e) {
        dd = {};
      }
      if (dd && dd.ok) {
        let msg = dd.msg || "已提交买一全平";
        if (dd.submitted_sheets != null) msg += " · " + dd.submitted_sheets + " 张";
        if (dd.fully_closed) msg += " · 已全平";
        alert(msg);
        await refresh();
      } else {
        alert((dd && dd.msg) || "平仓失败");
        btn.disabled = false;
        btn.textContent = oldText;
      }
    } catch (e) {
      alert((e && e.message) || "请求失败");
      btn.disabled = false;
      btn.textContent = oldText;
    }
  }

  function numOrNull(v) {
    if (v == null || v === "") return null;
    const n = Number(v);
    return Number.isFinite(n) ? n : null;
  }

  function emptyAgg() {
    return {
      machines: 0,
      online: 0,
      offline: 0,
      positions: 0,
      pnl: 0,
      premium: 0,
      cash: 0,
      hasPnl: false,
      hasPremium: false,
      hasCash: false,
    };
  }

  function addOnlineMetrics(bucket, snap) {
    const brief = snap.positions_brief || snap.positions || [];
    bucket.positions += brief.length;
    const pnl =
      snap.pnl && snap.pnl.unrealized_usdt != null
        ? numOrNull(snap.pnl.unrealized_usdt)
        : numOrNull(snap.upl_total_usdc);
    if (pnl != null) {
      bucket.pnl += pnl;
      bucket.hasPnl = true;
    }
    const prem = snap.premium || {};
    const paid = numOrNull(prem.paid_usdt);
    const cash = numOrNull(prem.cash_usdt);
    if (paid != null) {
      bucket.premium += paid;
      bucket.hasPremium = true;
    }
    if (cash != null) {
      bucket.cash += cash;
      bucket.hasCash = true;
    }
  }

  function summarizeOverview(list) {
    const all = emptyAgg();
    const sim = emptyAgg();
    const live = emptyAgg();
    (list || []).forEach(function (row) {
      const snap = row.snapshot || {};
      const mode = String((snap.instance || {}).mode || "").toLowerCase();
      const online = !!row.online;
      const targets = [all];
      if (mode === "sim") targets.push(sim);
      else if (mode === "live") targets.push(live);
      targets.forEach(function (b) {
        b.machines += 1;
        if (online) b.online += 1;
        else b.offline += 1;
      });
      if (!online) return;
      addOnlineMetrics(all, snap);
      if (mode === "sim") addOnlineMetrics(sim, snap);
      else if (mode === "live") addOnlineMetrics(live, snap);
    });
    return { all: all, sim: sim, live: live };
  }

  function fmtMoneyPlain(v, known) {
    if (!known || v == null || !Number.isFinite(Number(v))) return "—";
    return Number(v).toFixed(2) + " U";
  }

  function renderOverviewSummary(list) {
    const box = document.getElementById("overview-summary");
    if (!box) return;
    if (!list || !list.length) {
      box.hidden = true;
      box.innerHTML = "";
      return;
    }
    const s = summarizeOverview(list);
    function modeRow(label, tag, bucket) {
      return (
        "<tr>" +
        '<td><span class="overview-mode-tag overview-mode-tag--' +
        tag +
        '">' +
        escapeHtml(label) +
        "</span></td>" +
        '<td class="' +
        (bucket.online > 0 ? "status-on" : "") +
        '">' +
        bucket.online +
        "</td>" +
        '<td class="' +
        (bucket.offline > 0 ? "status-off" : "") +
        '">' +
        bucket.offline +
        "</td>" +
        "<td>" +
        bucket.positions +
        "</td>" +
        '<td class="' +
        (bucket.hasPnl ? pnlClass(bucket.pnl) : "") +
        '">' +
        escapeHtml(bucket.hasPnl ? fmtPnl(bucket.pnl) : "—") +
        "</td>" +
        "<td>" +
        escapeHtml(fmtMoneyPlain(bucket.premium, bucket.hasPremium)) +
        "</td>" +
        "<td>" +
        escapeHtml(fmtMoneyPlain(bucket.cash, bucket.hasCash)) +
        "</td>" +
        "</tr>"
      );
    }
    const rows = [];
    if (s.sim.machines > 0) rows.push(modeRow("sim", "sim", s.sim));
    if (s.live.machines > 0) rows.push(modeRow("live", "live", s.live));
    if (!rows.length) {
      box.hidden = true;
      box.innerHTML = "";
      return;
    }
    box.hidden = false;
    box.innerHTML =
      '<div class="overview-mode-wrap">' +
      '<div class="overview-mode-head"><strong>实时汇总</strong><span class="muted">仅统计在线机资金与仓位</span></div>' +
      '<table class="overview-mode-table">' +
      "<thead><tr>" +
      "<th>模式</th><th>在线</th><th>离线</th><th>仓位</th><th>浮盈</th><th>权利金</th><th>余额</th>" +
      "</tr></thead><tbody>" +
      rows.join("") +
      "</tbody></table></div>";
  }

  function modeSortKey(mode) {
    const m = String(mode || "").toLowerCase();
    if (m === "sim") return 0;
    if (m === "live") return 1;
    return 2;
  }

  function sortInstancesByMode(list) {
    return (list || []).slice().sort(function (a, b) {
      const ma = modeSortKey((((a || {}).snapshot || {}).instance || {}).mode);
      const mb = modeSortKey((((b || {}).snapshot || {}).instance || {}).mode);
      if (ma !== mb) return ma - mb;
      const ia = Number((a && a.id) || 0);
      const ib = Number((b && b.id) || 0);
      return ia - ib;
    });
  }

  async function refresh() {
    const status = document.getElementById("overview-status");
    const grid = document.getElementById("overview-grid");
    if (!grid) return;
    if (status) status.textContent = "刷新中…";
    try {
      const r = await fetch("/api/overview");
      const d = await r.json();
      if (!d.ok) throw new Error(d.msg || "失败");
      const list = sortInstancesByMode(d.instances || []);
      renderOverviewSummary(list);
      if (global.HubQuotes && HubQuotes.paint) HubQuotes.paint(list);
      if (!list.length) {
        grid.innerHTML =
          '<p class="muted">暂无启用实例,请先到「实例」添加.</p>';
      } else {
        grid.innerHTML =
          '<div class="overview-table-wrap"><table class="overview-table">' +
          "<thead><tr>" +
          "<th>名称</th><th>状态</th><th>模式</th><th>浮盈</th><th>权利金</th><th>资金占比</th><th>持仓</th><th>出场</th><th>买一/流动性</th><th>拉取时间</th><th>操作</th>" +
          "</tr></thead><tbody>" +
          list.map(renderRow).join("") +
          "</tbody></table></div>";
        grid.querySelectorAll("[data-close-opt]").forEach(function (btn) {
          btn.addEventListener("click", function () {
            requestClose(btn);
          });
        });
      }
      if (status) {
        const s = summarizeOverview(list);
        status.textContent =
          "已更新 · 共 " +
          list.length +
          " 台 · 在线 " +
          s.all.online +
          " · 离线 " +
          s.all.offline;
      }
    } catch (e) {
      if (status) status.textContent = e.message || "加载失败";
      const box = document.getElementById("overview-summary");
      if (box) {
        box.hidden = true;
        box.innerHTML = "";
      }
      if (global.HubQuotes && HubQuotes.paint) HubQuotes.paint([]);
    }
  }

  const WEEKDAYS = ["周日", "周一", "周二", "周三", "周四", "周五", "周六"];
  const LUNAR_MONTHS = ["正", "二", "三", "四", "五", "六", "七", "八", "九", "十", "冬", "腊"];
  const LUNAR_INFO = [
    0x04bd8, 0x04ae0, 0x0a570, 0x054d5, 0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2,
    0x04ae0, 0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2, 0x095b0, 0x14977,
    0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40, 0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970,
    0x06566, 0x0d4a0, 0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7, 0x0c950,
    0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0, 0x092d0, 0x0d2b2, 0x0a950, 0x0b557,
    0x06ca0, 0x0b550, 0x15355, 0x04da0, 0x0a5b0, 0x14573, 0x052b0, 0x0a9a8, 0x0e950, 0x06aa0,
    0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 0x0d950, 0x05b57, 0x056a0,
    0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b6a0, 0x195a6,
    0x095b0, 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46, 0x0ab60, 0x09570,
    0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50, 0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0,
    0x0c960, 0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0, 0x0cab5,
    0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 0x0a5b0, 0x15176, 0x052b0, 0x0a930,
    0x07954, 0x06aa0, 0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530,
    0x05aa0, 0x076a3, 0x096d0, 0x04afb, 0x04ad0, 0x0a4d0, 0x1d0b6, 0x0d250, 0x0d520, 0x0dd45,
    0x0b5a0, 0x056d0, 0x055b2, 0x049b0, 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0,
    0x14b63, 0x09370, 0x049f8, 0x04970, 0x064b0, 0x168a6, 0x0ea50, 0x06b20, 0x1a6c4, 0x0aae0,
    0x0a2e0, 0x0d2e3, 0x0c960, 0x0d557, 0x0d4a0, 0x0da50, 0x05d55, 0x056a0, 0x0a6d0, 0x055d4,
    0x052d0, 0x0a9b8, 0x0a950, 0x0b4a0, 0x0b6a6, 0x0ad50, 0x055a0, 0x0aba4, 0x0a5b0, 0x052b0,
    0x0b273, 0x06930, 0x07337, 0x06aa0, 0x0ad50, 0x14b55, 0x04b60, 0x0a570, 0x054e4, 0x0d160,
    0x0e968, 0x0d520, 0x0daa0, 0x16aa6, 0x056d0, 0x04ae0, 0x0a9d4, 0x0a2d0, 0x0d150, 0x0f252,
    0x0d520,
  ];

  function lunarLeapMonth(year) {
    return LUNAR_INFO[year - 1900] & 0xf;
  }

  function lunarLeapDays(year) {
    if (!lunarLeapMonth(year)) return 0;
    return LUNAR_INFO[year - 1900] & 0x10000 ? 30 : 29;
  }

  function lunarMonthDays(year, month) {
    return LUNAR_INFO[year - 1900] & (0x10000 >> month) ? 30 : 29;
  }

  function lunarYearDays(year) {
    let sum = 348;
    for (let i = 0x8000; i > 0x8; i >>= 1) {
      sum += LUNAR_INFO[year - 1900] & i ? 1 : 0;
    }
    return sum + lunarLeapDays(year);
  }

  function lunarDayName(day) {
    const n = ["日", "一", "二", "三", "四", "五", "六", "七", "八", "九", "十"];
    if (day === 10) return "初十";
    if (day === 20) return "二十";
    if (day === 30) return "三十";
    if (day < 11) return "初" + n[day];
    if (day < 20) return "十" + n[day - 10];
    return "廿" + n[day - 20];
  }

  function solarToLunarText(year, month, day) {
    if (year < 1900 || year > 2100) return "";
    let offset = Math.round(
      (Date.UTC(year, month - 1, day) - Date.UTC(1900, 0, 31)) / 86400000
    );
    let i;
    let temp = 0;
    for (i = 1900; i < 2101 && offset > 0; i++) {
      temp = lunarYearDays(i);
      offset -= temp;
    }
    if (offset < 0) {
      offset += temp;
      i--;
    }
    const lunarYear = i;
    const leap = lunarLeapMonth(lunarYear);
    let isLeap = false;
    for (i = 1; i < 13 && offset > 0; i++) {
      if (leap > 0 && i === leap + 1 && !isLeap) {
        i--;
        isLeap = true;
        temp = lunarLeapDays(lunarYear);
      } else {
        temp = lunarMonthDays(lunarYear, i);
      }
      if (isLeap && i === leap + 1) isLeap = false;
      offset -= temp;
    }
    if (offset === 0 && leap > 0 && i === leap + 1) {
      if (isLeap) {
        isLeap = false;
      } else {
        isLeap = true;
        i--;
      }
    }
    if (offset < 0) {
      offset += temp;
      i--;
    }
    const monthName = (isLeap ? "闰" : "") + LUNAR_MONTHS[i - 1] + "月";
    return "农历" + monthName + lunarDayName(offset + 1);
  }

  function beijingParts() {
    try {
      const parts = new Intl.DateTimeFormat("en-CA", {
        timeZone: "Asia/Shanghai",
        year: "numeric",
        month: "2-digit",
        day: "2-digit",
        hour: "2-digit",
        minute: "2-digit",
        second: "2-digit",
        hour12: false,
      }).formatToParts(new Date());
      const get = function (type) {
        const hit = parts.find(function (p) {
          return p.type === type;
        });
        return hit ? hit.value : "";
      };
      const y = Number(get("year"));
      const m = Number(get("month"));
      const d = Number(get("day"));
      const weekdayIndex = new Date(Date.UTC(y, m - 1, d)).getUTCDay();
      return {
        time:
          get("year") +
          "-" +
          get("month") +
          "-" +
          get("day") +
          " " +
          get("hour") +
          ":" +
          get("minute") +
          ":" +
          get("second"),
        weekdayIndex: weekdayIndex,
        weekday: WEEKDAYS[weekdayIndex] || "",
        lunar: solarToLunarText(y, m, d),
      };
    } catch (e) {
      const now = new Date();
      const utc = now.getTime() + now.getTimezoneOffset() * 60000;
      const bj = new Date(utc + 8 * 3600000);
      const p = function (n) {
        return String(n).padStart(2, "0");
      };
      const y = bj.getFullYear();
      const m = bj.getMonth() + 1;
      const d = bj.getDate();
      return {
        time:
          y +
          "-" +
          p(m) +
          "-" +
          p(d) +
          " " +
          p(bj.getHours()) +
          ":" +
          p(bj.getMinutes()) +
          ":" +
          p(bj.getSeconds()),
        weekdayIndex: bj.getDay(),
        weekday: WEEKDAYS[bj.getDay()] || "",
        lunar: solarToLunarText(y, m, d),
      };
    }
  }

  function tickBeijingClock() {
    const el = document.getElementById("overview-bj-time");
    if (!el) return;
    const parts = beijingParts();
    el.textContent = parts.time;
    el.setAttribute("datetime", parts.time.replace(" ", "T") + "+08:00");
    const weekend = parts.weekdayIndex === 0 || parts.weekdayIndex === 6;
    const clock = document.getElementById("overview-bj-clock");
    if (clock) clock.classList.toggle("is-weekend", weekend);
    const meta = document.getElementById("overview-bj-meta");
    if (meta) {
      meta.innerHTML =
        (parts.weekday ? '<span class="overview-bj-weekday">' + parts.weekday + "</span>" : "") +
        (parts.lunar ? '<span class="overview-bj-lunar">' + parts.lunar + "</span>" : "");
    }
  }

  function boot() {
    const btn = document.getElementById("btn-refresh");
    if (btn) btn.addEventListener("click", refresh);
    tickBeijingClock();
    setInterval(tickBeijingClock, 1000);
    refresh();
    setInterval(refresh, 10000);
  }

  global.HubOverview = { boot: boot, refresh: refresh };
})(window);