(function (global) {
  "use strict";

  /* ---------------------------------------------------------------- helpers */

  function number(value) {
    const parsed = Number(value);
    return Number.isFinite(parsed) ? parsed : 0;
  }

  function escapeHtml(value) {
    return String(value == null ? "" : value).replace(/[&<>"']/g, function (ch) {
      return { "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;", "'": "&#39;" }[ch];
    });
  }

  function formatNumber(value, digits) {
    return new Intl.NumberFormat("zh-CN", {
      minimumFractionDigits: digits,
      maximumFractionDigits: digits,
    }).format(number(value));
  }

  function changeClass(value) {
    const n = number(value);
    return n > 0 ? "up" : n < 0 ? "down" : "";
  }

  function streakLabel(streak) {
    const value = Math.max(1, number(streak));
    return value === 1 ? "首板" : value + "板";
  }

  function displayCompactDate(value) {
    const text = String(value || "").replaceAll("-", "");
    if (text.length !== 8) return value || "--";
    return text.slice(0, 4) + "-" + text.slice(4, 6) + "-" + text.slice(6, 8);
  }

  function localDateString(value) {
    const year = value.getFullYear();
    const month = String(value.getMonth() + 1).padStart(2, "0");
    const day = String(value.getDate()).padStart(2, "0");
    return year + "-" + month + "-" + day;
  }

  function todayString() {
    return localDateString(new Date());
  }

  function parseLocalDate(value) {
    const parts = String(value || "").split("-").map(Number);
    return new Date(parts[0], (parts[1] || 1) - 1, parts[2] || 1);
  }

  function addDays(value, delta) {
    const date = parseLocalDate(value);
    date.setDate(date.getDate() + delta);
    return localDateString(date);
  }

  function previousWeekday(value) {
    let date = parseLocalDate(value);
    date.setDate(date.getDate() - 1);
    while (date.getDay() === 0 || date.getDay() === 6) date.setDate(date.getDate() - 1);
    return localDateString(date);
  }

  const ICONS = {
    calendar: '<path d="M8 2v4"/><path d="M16 2v4"/><rect width="18" height="18" x="3" y="4" rx="2"/><path d="M3 10h18"/>',
    close: '<path d="M18 6 6 18"/><path d="m6 6 12 12"/>',
    "chevron-left": '<path d="m15 18-6-6 6-6"/>',
    "chevron-right": '<path d="m9 18 6-6-6-6"/>',
    inbox: '<path d="M22 12h-6l-2 3h-4l-2-3H2"/><path d="M5.45 5.11 2 12v6a2 2 0 0 0 2 2h16a2 2 0 0 0 2-2v-6l-3.45-6.89A2 2 0 0 0 16.76 4H7.24a2 2 0 0 0-1.79 1.11z"/>',
  };

  function icon(name, size) {
    const body = ICONS[name] || "";
    return '<svg width="' + (size || 16) + '" height="' + (size || 16) + '" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">' + body + "</svg>";
  }

  /* ---------------------------------------------------------------- state */

  const state = {
    key: "",
    requestedDate: "",
    dashboard: null,
    popularity: null,
    popularitySource: "combined",
    seq: 0,
    calCursor: null,
  };

  let sheetToken = 0;

  function pageConfig(key) {
    const cfg = global.MobileNav && global.MobileNav.tableColumns ? global.MobileNav.tableColumns[key] : null;
    return cfg || null;
  }

  function columnsFor(cfg) {
    if (cfg.columns) return cfg.columns[state.popularitySource] || cfg.columns.combined;
    return cfg;
  }

  /* ---------------------------------------------------------------- cells */

  function columnWidth(col) {
    if (col.width) return col.width;
    if (col.type === "rank") return 40;
    if (col.type === "stock") return 96;
    if (col.wide) return 140;
    if (col.type === "text" || col.type === "concepts" || col.type === "outcome" || col.type === "dual") return 96;
    return 72;
  }

  function colAlign(col) {
    if (col.type === "rank") return "m-align-center";
    if (["change", "price", "rate", "money", "gap", "int", "streak", "advance", "height", "move"].indexOf(col.type) >= 0) return "m-align-right";
    return "m-align-left";
  }

  function stockCell(row) {
    return '<span class="m-stock">' +
      '<span class="m-stock-name">' + escapeHtml(row.name || "--") + "</span>" +
      '<span class="m-stock-code">' + escapeHtml(row.code || "") + "</span>" +
      "</span>";
  }

  function rankCell(row, index) {
    const value = number(row.rank) > 0 ? number(row.rank) : index + 1;
    const hot = index < 3 ? '<span class="m-rank-hot">热</span>' : "";
    return '<span class="m-rank' + (index < 3 ? " is-top" : "") + '"><b>' + value + "</b>" + hot + "</span>";
  }

  function streakCell(value) {
    const n = number(value);
    if (n <= 0) return "";
    const high = n >= 4 ? " is-high" : "";
    return '<span class="m-pill' + high + '">' + streakLabel(n) + "</span>";
  }

  function numCell(value, digits, signed) {
    if (value == null || value === "") return '<span class="m-num"></span>';
    const n = number(value);
    const sign = signed && n > 0 ? "+" : "";
    return '<span class="m-num">' + sign + formatNumber(n, digits) + "</span>";
  }

  function changeCell(value) {
    if (value == null || value === "") return '<span class="m-num"></span>';
    const n = number(value);
    return '<span class="m-num ' + changeClass(n) + '">' + (n > 0 ? "+" : "") + formatNumber(n, 2) + "</span>";
  }

  function intCell(value, hideZero) {
    const n = Math.round(number(value));
    if (hideZero && n === 0) return '<span class="m-num"></span>';
    if (value == null || value === "") return '<span class="m-num"></span>';
    return '<span class="m-num">' + n.toLocaleString("zh-CN") + "</span>";
  }

  function advanceCell(value) {
    const n = number(value);
    const cls = n === 0 ? "is-neutral" : n < 20 ? "is-warning" : "is-active";
    return '<span class="m-num ' + cls + '">' + formatNumber(n, 1) + "</span>";
  }

  function outcomeCell(value) {
    const map = { "晋级": "advance", "断板": "fail", "炸板": "broken", "跌停": "down" };
    const cls = map[value] || "fail";
    return '<span class="m-tag m-tag--' + cls + '">' + escapeHtml(value || "") + "</span>";
  }

  function heightCell(value) {
    const n = number(value);
    if (n <= 0) return "";
    return '<span class="m-pill m-pill--plain">' + n + "</span>";
  }

  function moveCell(value) {
    const n = value == null ? null : number(value);
    if (n == null) return '<span class="m-num is-new">新</span>';
    if (n > 0) return '<span class="m-num up">\u2191' + n + "</span>";
    if (n < 0) return '<span class="m-num down">\u2193' + Math.abs(n) + "</span>";
    return '<span class="m-num">持平</span>';
  }

  function conceptsCell(value) {
    const list = Array.isArray(value) ? value : [];
    const text = list.slice(0, 3).join("、");
    return '<span class="m-cell-text" title="' + escapeHtml(list.join("、")) + '">' + escapeHtml(text) + "</span>";
  }

  function dualCell(value) {
    const dual = Boolean(value);
    return '<span class="m-tag ' + (dual ? "m-tag--dual" : "") + '">' + (dual ? "双榜共识" : "单榜入选") + "</span>";
  }

  function textCell(value) {
    const text = String(value == null ? "" : value);
    return '<span class="m-cell-text" title="' + escapeHtml(text) + '">' + escapeHtml(text) + "</span>";
  }

  function cellHtml(col, row, index) {
    const value = row[col.key];
    switch (col.type) {
      case "stock": return stockCell(row);
      case "rank": return rankCell(row, index);
      case "streak": return streakCell(value);
      case "change": return changeCell(value);
      case "price": return numCell(value, 2);
      case "rate": return numCell(value, 2);
      case "money": return numCell(value, 2);
      case "gap": return numCell(value, 2);
      case "int": return intCell(value, col.hideZero);
      case "advance": return advanceCell(value);
      case "outcome": return outcomeCell(value);
      case "height": return heightCell(value);
      case "move": return moveCell(value);
      case "concepts": return conceptsCell(value);
      case "dual": return dualCell(value);
      case "text":
      default: return textCell(value);
    }
  }

  /* ---------------------------------------------------------------- table */

  function buildTable(cols, rows) {
    const frozen = cols.frozenColumns || [];
    const primary = cols.primaryColumns || [];
    const scroll = cols.scrollColumns || [];
    const ordered = frozen.concat(primary, scroll);

    let left = 0;
    const frozenLeft = frozen.map(function (col) {
      const offset = left;
      left += columnWidth(col);
      return offset;
    });

    function cellOpen(col, index, isHead) {
      const isFrozen = index < frozen.length;
      const width = columnWidth(col);
      const clamp = col.type === "text" || col.type === "concepts" ? ";max-width:" + width + "px" : "";
      const style = "min-width:" + width + "px" + clamp + (isFrozen ? ";width:" + width + "px;left:" + frozenLeft[index] + "px" : "");
      const cls = (isHead ? "m-th" : "m-td") + " " + colAlign(col) + (isFrozen ? " m-frozen" : "");
      return '<' + (isHead ? "th" : "td") + ' class="' + cls + '" style="' + style + '">';
    }

    const head = ordered.map(function (col, i) {
      return cellOpen(col, i, true) + escapeHtml(col.label) + (i < frozen.length ? "</th>" : "</th>");
    }).join("");

    const body = rows.map(function (row, rIndex) {
      const cells = ordered.map(function (col, i) {
        return cellOpen(col, i, false) + cellHtml(col, row, rIndex) + "</td>";
      }).join("");
      const code = /^\d{6}$/.test(String(row.code || "")) ? ' data-code="' + escapeHtml(row.code) + '"' : "";
      return "<tr" + code + ">" + cells + "</tr>";
    }).join("");

    return '<table class="m-table"><thead><tr>' + head + "</tr></thead><tbody>" + body + "</tbody></table>";
  }

  function skeletonHtml(rowCount) {
    const rows = [];
    for (let i = 0; i < rowCount; i += 1) {
      rows.push('<div class="m-skeleton-row"><span class="m-skeleton-bar"></span></div>');
    }
    return '<div class="m-skeleton" aria-hidden="true">' + rows.join("") + "</div>";
  }

  function emptyHtml() {
    return '<div class="m-state m-motion-rise-in">' +
      '<span class="m-state-icon">' + icon("inbox", 26) + "</span>" +
      "<p>该交易日暂无相关数据</p>" +
      '<small>可点右上角日期切换交易日</small>' +
      "</div>";
  }

  function errorHtml(message) {
    return '<div class="m-state m-state--error m-motion-fade-in">' +
      '<p>' + escapeHtml(message || "数据加载失败") + "</p>" +
      '<button class="m-btn-primary m-btn-retry" type="button" data-action="retry">重试</button>' +
      "</div>";
  }

  /* ---------------------------------------------------------------- summary */

  function summaryCard(label, value, tone) {
    const cls = tone === "up" ? " is-up" : tone === "down" ? " is-down" : "";
    return '<div class="m-summary-item' + cls + '"><span>' + escapeHtml(label) + "</span><strong>" + escapeHtml(value) + "</strong></div>";
  }

  function buildSummary(key, cfg) {
    const dash = state.dashboard || {};
    const overview = dash.overview || {};
    const cards = [];

    if (cfg.summary === "limit") {
      const limits = dash.limits || [];
      const maxStreak = limits.reduce(function (m, r) { return Math.max(m, number(r.streak)); }, 0);
      const seal = overview.seal_rate != null ? formatNumber(overview.seal_rate, 1) + "%" : "--";
      cards.push(summaryCard("涨停家数", limits.length, "up"));
      cards.push(summaryCard("最高连板", maxStreak ? maxStreak + " 板" : "--"));
      cards.push(summaryCard("封板率", seal));
    } else if (cfg.summary === "broken") {
      const broken = dash.broken || [];
      const limits = dash.limits || [];
      const seal = overview.seal_rate != null ? formatNumber(overview.seal_rate, 1) + "%" : "--";
      cards.push(summaryCard("炸板家数", broken.length, "down"));
      cards.push(summaryCard("涨停家数", overview.limit_up_count != null ? overview.limit_up_count : limits.length, "up"));
      cards.push(summaryCard("封板率", seal));
    } else if (cfg.summary === "down") {
      const downs = dash.down_limits || [];
      const maxStreak = downs.reduce(function (m, r) { return Math.max(m, number(r.streak)); }, 0);
      const cluster = downSectorCluster(downs);
      cards.push(summaryCard("跌停家数", downs.length, "down"));
      cards.push(summaryCard("连续跌停", maxStreak ? maxStreak + " 天" : "--"));
      cards.push(summaryCard("集中板块", cluster || "--"));
    } else if (cfg.summary === "yesterday") {
      const rows = dash.yesterday_limits || [];
      const total = rows.length;
      const advance = rows.filter(function (r) { return r.outcome === "晋级"; }).length;
      const positive = rows.filter(function (r) { return number(r.current_change) > 0; }).length;
      const risk = rows.filter(function (r) { return ["炸板", "跌停"].indexOf(r.outcome) >= 0; }).length;
      const rate = function (v) { return total ? formatNumber(v / total * 100, 1) + "%" : "--"; };
      cards.push(summaryCard("晋级率", rate(advance), "up"));
      cards.push(summaryCard("兑现率", rate(positive), "up"));
      cards.push(summaryCard("亏钱效应", rate(risk), "down"));
    } else if (cfg.summary === "performance") {
      const up = number(overview.up_count);
      const down = number(overview.down_count);
      const ratio = up + down > 0 ? formatNumber(up / (up + down) * 100, 1) + "%" : "--";
      cards.push(summaryCard("上涨", up + " 家", "up"));
      cards.push(summaryCard("下跌", down + " 家", "down"));
      cards.push(summaryCard("红盘率", ratio, "up"));
    } else {
      return "";
    }

    if (!cards.length) return "";
    return '<div class="m-summary">' + cards.join("") + "</div>";
  }

  function downSectorCluster(rows) {
    const counts = {};
    rows.forEach(function (row) {
      const sector = String(row.sector || "其他").trim() || "其他";
      if (sector === "其他") return;
      counts[sector] = (counts[sector] || 0) + 1;
    });
    let cluster = null;
    Object.keys(counts).forEach(function (sector) {
      if (!cluster || counts[sector] > cluster.count) cluster = { sector: sector, count: counts[sector] };
    });
    return cluster && cluster.count >= 2 ? cluster.sector + " \u00d7" + cluster.count : "";
  }

  /* ---------------------------------------------------------------- rows */

  function brokenLimitRate(row) {
    const name = String(row.name || "").toUpperCase();
    const code = String(row.code || "").replace(/\D/g, "");
    if (name.indexOf("ST") >= 0) return 10;
    if (/^(300|301|688|689)/.test(code)) return 20;
    if (/^(4|8|92)/.test(code)) return 30;
    return 10;
  }

  function prepareRows(key) {
    const dash = state.dashboard || {};
    if (key === "market/limit-up") return dash.limits || [];
    if (key === "market/broken") {
      return (dash.broken || []).map(function (row) {
        row.limitGap = Math.max(0, brokenLimitRate(row) - number(row.change));
        return row;
      });
    }
    if (key === "market/limit-down") return dash.down_limits || [];
    if (key === "market/yesterday") return dash.yesterday_limits || [];
    if (key === "market/performance") return normalizePerformanceRows(dash.limit_performance || []);
    if (key === "market/popularity") {
      return state.popularity ? (state.popularity[state.popularitySource] || []) : [];
    }
    return [];
  }

  function normalizePerformanceRows(rows) {
    const groups = {};
    (rows || []).forEach(function (row) {
      const level = Math.max(1, number(row.level));
      const displayLevel = Math.min(level, 5);
      const group = groups[displayLevel] || {
        level: displayLevel,
        label: displayLevel === 1 ? "昨日首板" : displayLevel === 5 ? "昨日5板+" : "昨日" + displayLevel + "板",
        count: 0,
        advanced: 0,
        positive: 0,
        changeTotal: 0,
      };
      const count = number(row.count);
      group.count += count;
      group.advanced += number(row.advanced);
      group.positive += count * number(row.positive_rate) / 100;
      group.changeTotal += count * number(row.average_change);
      groups[displayLevel] = group;
    });
    return Object.keys(groups)
      .map(Number)
      .sort(function (a, b) { return b - a; })
      .map(function (level) {
        const group = groups[level];
        return {
          level: group.level,
          label: group.label,
          count: group.count,
          advanced: group.advanced,
          advance_rate: group.count ? group.advanced / group.count * 100 : 0,
          positive_rate: group.count ? group.positive / group.count * 100 : 0,
          average_change: group.count ? group.changeTotal / group.count : 0,
        };
      });
  }

  function performanceConclusion() {
    const overview = (state.dashboard && state.dashboard.overview) || {};
    const up = number(overview.up_count);
    const down = number(overview.down_count);
    const breadthRate = up + down > 0 ? up / (up + down) * 100 : 50;
    const stance = breadthRate < 25 ? "宜守不宜攻" : breadthRate < 45 ? "控制仓位，聚焦核心" : "保持精选，跟随强势梯队";
    const phase = overview.sentiment_phase || "观察";
    return '<div class="m-conclusion">结论：<b>' + escapeHtml(stance) + "</b>，当前情绪周期「" + escapeHtml(phase) + "」。</div>";
  }

  /* ---------------------------------------------------------------- render */

  function updateHeader(title, dateText) {
    if (global.MobileRouter && global.MobileRouter.updateHeader) {
      global.MobileRouter.updateHeader({ title: title, back: true, actions: dateButtonHtml(dateText) });
    }
  }

  function dateButtonHtml(dateText) {
    return '<button class="m-date-btn" type="button" data-action="date" aria-label="选择日期">' +
      icon("calendar", 15) +
      '<span class="m-date-btn-text">' + escapeHtml(dateText || state.requestedDate || todayString()) + "</span>" +
      "</button>";
  }

  function sourceTabsHtml(cfg) {
    if (!cfg.sources || !cfg.sources.length) return "";
    const labels = { combined: "双榜综合", ths: "同花顺", dc: "东方财富" };
    return '<div class="m-source-tabs" role="tablist" aria-label="热榜来源">' +
      cfg.sources.map(function (source) {
        const active = source === state.popularitySource;
        return '<button class="m-source-tab' + (active ? " active" : "") + '" type="button" role="tab" aria-selected="' + (active ? "true" : "false") + '" data-action="source" data-source="' + source + '">' + escapeHtml(labels[source] || source) + "</button>";
      }).join("") +
      "</div>";
  }

  function renderPage(key) {
    const cfg = pageConfig(key);
    if (!cfg) return;
    state.key = key;
    state.requestedDate = todayString();
    state.dashboard = null;
    state.popularity = null;
    state.popularitySource = "combined";
    state.calCursor = null;

    document.getElementById("m-view").classList.add("m-view-feature");
    const title = findLabel(key) || key;
    updateHeader(title, state.requestedDate);

    const summary = buildSummary(key, cfg);
    const sourceTabs = sourceTabsHtml(cfg);
    const content = '<div class="m-page" data-page="' + escapeHtml(key) + '">' +
      summary +
      sourceTabs +
      '<div class="m-table-scroll" id="m-table-scroll">' + skeletonHtml(8) + "</div>" +
      "</div>";
    document.getElementById("m-view").innerHTML = content;

    load();
  }

  function findLabel(key) {
    const hubs = global.MobileNav && global.MobileNav.hubs ? global.MobileNav.hubs : {};
    for (const hubKey in hubs) {
      const items = hubs[hubKey].items || [];
      for (const item of items) {
        if (item.key === key) return item.label;
      }
    }
    return key;
  }

  function load() {
    const key = state.key;
    const cfg = pageConfig(key);
    if (!cfg) return;
    const seq = ++state.seq;
    const requestedDate = state.requestedDate;
    const url = key === "market/popularity"
      ? "/api/popularity?trade_date=" + encodeURIComponent(requestedDate)
      : "/api/dashboard?trade_date=" + encodeURIComponent(requestedDate);

    global.MobileAPI.request(url).then(function (payload) {
      if (seq !== state.seq) return;
      if (key === "market/popularity") {
        state.popularity = payload;
      } else {
        state.dashboard = payload;
      }
      const meta = payload.meta || {};
      state.requestedDate = displayCompactDate(meta.requested_date || meta.trade_date || requestedDate);
      const title = findLabel(key) || key;
      updateHeader(title, state.requestedDate);
      renderData(key, cfg);
    }).catch(function (error) {
      if (seq !== state.seq) return;
      renderError(error && error.message ? error.message : "数据加载失败");
    });
  }

  function renderData(key, cfg) {
    const cols = columnsFor(cfg);
    const rows = prepareRows(key);
    const scroll = document.getElementById("m-table-scroll");
    if (!scroll) return;

    if (!rows.length) {
      scroll.innerHTML = emptyHtml();
    } else {
      scroll.innerHTML = buildTable(cols, rows);
    }

    const page = document.querySelector(".m-page");
    if (!page) return;

    let summary = buildSummary(key, cfg);
    if (key === "market/performance" && summary) summary += performanceConclusion();

    const existingSummary = page.querySelector(".m-summary");
    if (existingSummary) {
      existingSummary.outerHTML = summary || "";
    } else if (summary) {
      const tabs = page.querySelector(".m-source-tabs");
      const tmp = document.createElement("div");
      tmp.innerHTML = summary;
      const node = tmp.firstChild;
      page.insertBefore(node, tabs || scroll);
    }

    scroll.classList.remove("m-motion-fade-in");
    void scroll.offsetWidth;
    scroll.classList.add("m-motion-fade-in");
  }

  function renderError(message) {
    const scroll = document.getElementById("m-table-scroll");
    if (scroll) scroll.innerHTML = errorHtml(message);
    const page = document.querySelector(".m-page");
    if (page) {
      const summary = page.querySelector(".m-summary");
      if (summary) summary.remove();
    }
  }

  /* ---------------------------------------------------------------- sheets */

  function ensureSheetRoot() {
    let root = document.getElementById("m-sheet-root");
    if (!root) {
      root = document.createElement("div");
      root.id = "m-sheet-root";
      root.className = "m-sheet-root";
      document.getElementById("m-app").appendChild(root);
    }
    return root;
  }

  function openSheet(content, opts) {
    const root = ensureSheetRoot();
    sheetToken += 1;
    root.innerHTML =
      '<div class="m-sheet-backdrop" data-sheet-backdrop></div>' +
      '<div class="m-sheet' + (opts && opts.detail ? " m-sheet--detail" : "") + '" role="dialog" aria-modal="true">' +
      '<div class="m-sheet-handle" aria-hidden="true"></div>' +
      content +
      "</div>";
    global.requestAnimationFrame(function () { root.classList.add("is-open"); });
    bindSheetDrag(root);
  }

  function closeSheet() {
    const root = document.getElementById("m-sheet-root");
    if (!root) return;
    const token = sheetToken;
    root.classList.remove("is-open");
    global.setTimeout(function () {
      if (sheetToken === token && !root.classList.contains("is-open")) root.innerHTML = "";
    }, 340);
  }

  function bindSheetDrag(root) {
    const sheet = root.querySelector(".m-sheet");
    const handle = root.querySelector(".m-sheet-handle");
    if (!sheet || !handle) return;
    let startY = 0;
    let dragging = false;
    handle.addEventListener("touchstart", function (event) {
      dragging = true;
      startY = event.touches[0].clientY;
      sheet.style.transition = "none";
    }, { passive: true });
    handle.addEventListener("touchmove", function (event) {
      if (!dragging) return;
      const dy = event.touches[0].clientY - startY;
      if (dy > 0) sheet.style.transform = "translateY(" + dy + "px)";
    }, { passive: true });
    handle.addEventListener("touchend", function (event) {
      if (!dragging) return;
      dragging = false;
      sheet.style.transition = "";
      const dy = event.changedTouches[0].clientY - startY;
      if (dy > sheet.offsetHeight / 3) {
        closeSheet();
      } else {
        sheet.style.transform = "";
      }
    });
  }

  function selectDate(dateStr) {
    if (!dateStr) return;
    state.requestedDate = dateStr;
    closeSheet();
    load();
  }

  function openDateSheet() {
    state.calCursor = {
      year: parseLocalDate(state.requestedDate).getFullYear(),
      month: parseLocalDate(state.requestedDate).getMonth(),
    };
    openSheet(
      '<div class="m-sheet-head">' +
      '<h2>选择日期</h2>' +
      '<button class="m-sheet-close" type="button" data-sheet-close aria-label="关闭">' + icon("close", 20) + "</button>" +
      "</div>" +
      '<div class="m-sheet-body" id="m-date-sheet-body"></div>',
      { detail: false }
    );
    renderDateSheetBody();
  }

  function renderDateSheetBody() {
    const body = document.getElementById("m-date-sheet-body");
    if (!body || !state.calCursor) return;
    const year = state.calCursor.year;
    const month = state.calCursor.month;
    const today = todayString();
    const now = parseLocalDate(today);
    const currentMonth = now.getFullYear() * 12 + now.getMonth();
    const cursorMonth = year * 12 + month;
    const prevDisabled = cursorMonth <= currentMonth - 12;
    const nextDisabled = cursorMonth >= currentMonth;

    const quick = [
      { label: "今天", date: todayString() },
      { label: "昨天", date: addDays(today, -1) },
      { label: "前一交易日", date: previousTradeDate() },
    ];

    const quickHtml = quick.map(function (item) {
      return '<button class="m-quick" type="button" data-quick-date="' + escapeHtml(item.date) + '">' + escapeHtml(item.label) + "</button>";
    }).join("");

    body.innerHTML =
      '<div class="m-quick-row">' + quickHtml + "</div>" +
      '<div class="m-cal-head">' +
      '<button class="m-cal-nav" type="button" data-cal-nav="prev"' + (prevDisabled ? " disabled" : "") + " aria-label=\"上个月\">" + icon("chevron-left", 18) + "</button>" +
      '<span class="m-cal-title">' + year + " 年 " + (month + 1) + " 月</span>" +
      '<button class="m-cal-nav" type="button" data-cal-nav="next"' + (nextDisabled ? " disabled" : "") + " aria-label=\"下个月\">" + icon("chevron-right", 18) + "</button>" +
      "</div>" +
      '<div class="m-cal-week">' + ["一", "二", "三", "四", "五", "六", "日"].map(function (d) { return "<span>" + d + "</span>"; }).join("") + "</div>" +
      '<div class="m-cal-grid">' + calendarCells(year, month) + "</div>";
  }

  function calendarCells(year, month) {
    const first = new Date(year, month, 1);
    const startWeekday = (first.getDay() + 6) % 7;
    const daysInMonth = new Date(year, month + 1, 0).getDate();
    const today = todayString();
    const cells = [];
    for (let i = 0; i < startWeekday; i += 1) cells.push('<span class="m-cal-cell is-empty"></span>');
    for (let d = 1; d <= daysInMonth; d += 1) {
      const date = new Date(year, month, d);
      const dateStr = localDateString(date);
      const dow = date.getDay();
      const disabled = dow === 0 || dow === 6 || dateStr > today;
      const selected = dateStr === state.requestedDate;
      cells.push(
        '<button class="m-cal-cell' + (selected ? " is-selected" : "") + '" type="button" data-date="' + dateStr + '"' + (disabled ? " disabled" : "") + ">" + d + "</button>"
      );
    }
    return cells.join("");
  }

  function previousTradeDate() {
    const dash = state.dashboard || {};
    if (dash.meta && dash.meta.previous_trade_date) return displayCompactDate(dash.meta.previous_trade_date);
    if (state.popularity && state.popularity.meta && state.popularity.meta.previous_trade_date) {
      return displayCompactDate(state.popularity.meta.previous_trade_date);
    }
    return previousWeekday(todayString());
  }

  function openDetailSheet(code) {
    openSheet(
      '<div class="m-sheet-head">' +
      '<div class="m-sheet-head-title"><span class="m-sheet-head-code">' + escapeHtml(code) + '</span></div>' +
      '<button class="m-sheet-close" type="button" data-sheet-close aria-label="关闭">' + icon("close", 20) + "</button>" +
      "</div>" +
      '<div class="m-sheet-body" id="m-detail-sheet-body">' +
      '<div class="m-skeleton">' +
      '<div class="m-skeleton-row"><span class="m-skeleton-bar"></span></div>' +
      '<div class="m-skeleton-row"><span class="m-skeleton-bar"></span></div>' +
      '<div class="m-skeleton-row"><span class="m-skeleton-bar"></span></div>' +
      "</div>" +
      "</div>",
      { detail: true }
    );
    loadDetail(code);
  }

  function loadDetail(code) {
    const token = sheetToken;
    global.MobileAPI.request("/api/stock/" + encodeURIComponent(code) + "/preview").then(function (payload) {
      if (token !== sheetToken) return;
      renderDetail(payload);
    }).catch(function (error) {
      if (token !== sheetToken) return;
      const body = document.getElementById("m-detail-sheet-body");
      if (body) body.innerHTML = errorHtml(error && error.message ? error.message : "行情预览加载失败");
    });
  }

  function renderDetail(payload) {
    const body = document.getElementById("m-detail-sheet-body");
    if (!body) return;
    const stock = payload.stock || {};
    const prices = payload.prices || [];
    const meta = payload.meta || {};
    const name = stock.name && stock.name !== "--" ? stock.name : "--";
    const price = number(stock.price);
    const change = number(stock.change);
    const industry = stock.industry && stock.industry !== "其他" ? stock.industry : (stock.sector || "其他");

    const spark = sparklineHtml(prices);

    body.innerHTML =
      '<div class="m-detail-top">' +
      '<div class="m-detail-name">' + escapeHtml(name) + '<span class="m-detail-code">' + escapeHtml(stock.code || "") + "</span></div>" +
      '<div class="m-detail-quote">' +
      '<strong class="m-detail-price ' + changeClass(change) + '">' + (price ? formatNumber(price, 2) : "--") + "</strong>" +
      '<span class="m-detail-change ' + changeClass(change) + '">' + (change > 0 ? "+" : "") + formatNumber(change, 2) + "%</span>" +
      "</div>" +
      '<div class="m-detail-meta">' + escapeHtml(industry) + " · " + escapeHtml(displayCompactDate(meta.trade_date) || "--") + "</div>" +
      "</div>" +
      spark +
      '<div class="m-detail-note">' + escapeHtml(meta.notice || "数据来源：本地行情") + "</div>";
  }

  function sparklineHtml(prices) {
    const closes = (prices || []).map(function (bar) { return number(bar.close); }).filter(function (v) { return v > 0; });
    if (closes.length < 2) return "";
    const min = Math.min.apply(null, closes);
    const max = Math.max.apply(null, closes);
    const range = max - min || 1;
    const width = 320;
    const height = 96;
    const step = width / (closes.length - 1);
    const points = closes.map(function (value, i) {
      const x = Math.round(i * step);
      const y = Math.round(height - (value - min) / range * height);
      return x + "," + y;
    }).join(" ");
    const up = closes[closes.length - 1] >= closes[0];
    return '<div class="m-detail-chart"><svg viewBox="0 0 ' + width + " " + height + '" preserveAspectRatio="none" aria-hidden="true">' +
      '<polyline fill="none" style="stroke:' + (up ? "var(--market-up)" : "var(--market-down)") + '" stroke-width="1.5" points="' + points + '"/>' +
      "</svg></div>";
  }

  /* ---------------------------------------------------------------- events */

  function bindEvents() {
    window.addEventListener("hashchange", closeSheet);

    document.addEventListener("click", function (event) {
      const dateBtn = event.target.closest("[data-action=date]");
      if (dateBtn) { openDateSheet(); return; }

      const retry = event.target.closest("[data-action=retry]");
      if (retry) { load(); return; }

      const sourceTab = event.target.closest("[data-action=source]");
      if (sourceTab) {
        state.popularitySource = sourceTab.dataset.source || "combined";
        const cfg = pageConfig(state.key);
        if (cfg) {
          const rows = prepareRows(state.key);
          const scroll = document.getElementById("m-table-scroll");
          if (scroll) scroll.innerHTML = rows.length ? buildTable(columnsFor(cfg), rows) : emptyHtml();
          document.querySelectorAll(".m-source-tab").forEach(function (tab) {
            const active = tab.dataset.source === state.popularitySource;
            tab.classList.toggle("active", active);
            tab.setAttribute("aria-selected", String(active));
          });
        }
        return;
      }

      const closeBtn = event.target.closest("[data-sheet-close]");
      if (closeBtn) { closeSheet(); return; }

      const backdrop = event.target.closest("[data-sheet-backdrop]");
      if (backdrop) { closeSheet(); return; }

      const quick = event.target.closest("[data-quick-date]");
      if (quick) { selectDate(quick.dataset.quickDate); return; }

      const calNav = event.target.closest("[data-cal-nav]");
      if (calNav) {
        if (calNav.disabled) return;
        const dir = calNav.dataset.calNav === "next" ? 1 : -1;
        const monthIndex = state.calCursor.year * 12 + state.calCursor.month + dir;
        state.calCursor = { year: Math.floor(monthIndex / 12), month: ((monthIndex % 12) + 12) % 12 };
        renderDateSheetBody();
        return;
      }

      const calCell = event.target.closest("[data-date]");
      if (calCell) {
        if (calCell.disabled) return;
        selectDate(calCell.dataset.date);
        return;
      }

      const row = event.target.closest("[data-code]");
      if (row) {
        const interactive = event.target.closest("button, a, input, select, textarea");
        if (!interactive) openDetailSheet(row.dataset.code);
      }
    });
  }

  /* ---------------------------------------------------------------- init */

  bindEvents();

  global.MobilePages = {
    render: renderPage,
    has: function (key) { return Boolean(pageConfig(key)); },
  };
})(window);