const $ = (selector, scope) => {
  const root = scope ?? (typeof document !== "undefined" ? document : null);
  return root ? root.querySelector(selector) : null;
};
const $$ = (selector, scope) => {
  const root = scope ?? (typeof document !== "undefined" ? document : null);
  return root ? [...root.querySelectorAll(selector)] : [];
};

const portal = (typeof document !== "undefined" && document.body)
  ? (document.body.dataset.portal || "entry")
  : "entry";
const viewNames = portal === "admin"
  ? { dashboard: "管理总览", pair: "往来查询", audit: "审核中心", flows: "流水管理", companies: "公司与账号", settings: "结账与期初", reminders: "提醒管理" }
  : { workspace: "工作台", upload: "流水导入", manual: "手工记录", flows: "流水管理", balances: "往来余额", reconcile: "往来确认", accounts: "银行账户", notifications: "通知" };

const storageKeys = {
  manual: "ledger-demo-manual-records",
};

const accountStatusLabels = {
  pending: "待复核",
  active: "已启用",
  returned: "已退回",
  disabled: "已停用",
};

const state = {
  currentView: portal === "admin" ? "dashboard" : "workspace",
  selectedFile: null,
  parseResult: null,
};

const motionQuery = (typeof window !== "undefined" && window.matchMedia)
  ? window.matchMedia("(prefers-reduced-motion: reduce)")
  : { matches: true, addEventListener() {}, removeEventListener() {} };

function animateView(view, { initial = false } = {}) {
  if (!view || motionQuery.matches || typeof view.animate !== "function") return;
  if (!initial) {
    view.getAnimations().forEach((animation) => animation.cancel());
    view.animate(
      [{ opacity: 0.84, transform: "translateY(5px)" }, { opacity: 1, transform: "translateY(0)" }],
      { duration: 180, easing: "cubic-bezier(.22,1,.36,1)" },
    );
    return;
  }
  const selectors = [
    ".page-heading > *",
    ".metric-card",
    ".period-ribbon",
    ".company-alert",
    ".admin-dashboard-grid > *",
    ".company-dashboard-grid > *",
    ".company-ledger-panel",
    ".query-band",
    ".filter-bar",
    ".filter-grid",
    ".pair-report",
    ".panel",
    ".work-progress",
    ".reconcile-summary",
    ".account-directory > article",
  ];
  const elements = [...new Set(selectors.flatMap((selector) => [...view.querySelectorAll(selector)]))]
    .filter((element) => !element.closest(".panel") || element.matches(".panel"));

  elements.forEach((element, index) => {
    element.getAnimations().forEach((animation) => animation.cancel());
    // metric-card 的 3D 倾斜与悬停倾斜由 CSS 控制，入场动画只做淡入，
    // 否则 fill:both 的 translateY(0) 会覆盖 CSS 的 transform，导致倾斜失效。
    const keyframes = element.classList.contains("metric-card")
      ? [{ opacity: 0 }, { opacity: 1 }]
      : [
          { opacity: 0, transform: `translateY(${initial ? 16 : 10}px)` },
          { opacity: 1, transform: "translateY(0)" },
        ];
    element.animate(keyframes, {
      duration: 440,
      delay: Math.min(index * 38, 260),
      easing: "cubic-bezier(.22,1,.36,1)",
      fill: "both",
    });
  });
}

function initMotion() {
  if (motionQuery.matches) return;
  animateView($(".app-view.is-active"), { initial: true });

  $$(".nav-item", $("#sidebar") || document).forEach((item, index) => {
    item.animate(
      [{ opacity: 0, transform: "translateX(-8px)" }, { opacity: 1, transform: "translateX(0)" }],
      { duration: 360, delay: 90 + index * 28, easing: "cubic-bezier(.22,1,.36,1)", fill: "both" },
    );
  });

  $$(".company-ledger").forEach((ledger) => {
    ledger.addEventListener("toggle", () => {
      if (!ledger.open) return;
      $(".ledger-breakdown", ledger)?.animate(
        [{ opacity: 0, transform: "translateY(-8px)" }, { opacity: 1, transform: "translateY(0)" }],
        { duration: 260, easing: "cubic-bezier(.22,1,.36,1)" },
      );
    });
  });
}

function readStoredRecords(key) {
  try {
    const value = JSON.parse(localStorage.getItem(key) || "[]");
    return Array.isArray(value) ? value : [];
  } catch {
    return [];
  }
}

function writeStoredRecords(key, records) {
  try {
    localStorage.setItem(key, JSON.stringify(records));
    return true;
  } catch {
    showToast("本机演示数据保存失败", "请检查浏览器是否允许本地存储");
    return false;
  }
}

function recordStatus(status) {
  if (["已启用", "已确认"].includes(status)) return { className: "success", label: status };
  if (status === "已退回") return { className: "danger", label: status };
  if (["异常待处理", "已停用"].includes(status)) return { className: "neutral", label: status };
  return { className: "warning", label: status || "待复核" };
}

function accountStatusLabel(status) {
  return accountStatusLabels[status] || "待复核";
}

function accountTail(masked) {
  return String(masked || "").replace(/^\*+/, "");
}

function formatCurrency(value) {
  return Number(value).toLocaleString("zh-CN", { minimumFractionDigits: 2, maximumFractionDigits: 2 });
}

function showToast(title, detail = "") {
  const region = $("#toastRegion");
  if (!region) return;
  const toast = document.createElement("div");
  toast.className = "toast";
  const heading = document.createElement("strong");
  heading.textContent = title;
  toast.append(heading);
  if (detail) {
    const description = document.createElement("small");
    description.textContent = detail;
    toast.append(description);
  }
  region.append(toast);
  window.setTimeout(() => toast.remove(), 3400);
}

function closeNavigation({ restoreFocus = false } = {}) {
  const sidebar = $("#sidebar");
  if (!sidebar) return;
  const wasOpen = sidebar.classList.contains("is-open");
  sidebar.classList.remove("is-open");
  $$(".menu-button").forEach((button) => {
    button.setAttribute("aria-expanded", "false");
    button.setAttribute("aria-label", "打开导航");
  });
  if (restoreFocus && wasOpen) $(".menu-button")?.focus();
}

function showView(view) {
  if (!viewNames[view]) return;
  const navigationWasOpen = $("#sidebar")?.classList.contains("is-open");
  state.currentView = view;
  $$(".app-view").forEach((page) => page.classList.toggle("is-active", page.dataset.page === view));
  $$(".nav-item[data-view]").forEach((item) => {
    const active = item.dataset.view === view;
    item.classList.toggle("is-active", active);
    if (active) item.setAttribute("aria-current", "page");
    else item.removeAttribute("aria-current");
  });
  const title = $("#currentViewName");
  if (title) title.textContent = viewNames[view];
  closeNavigation({ restoreFocus: navigationWasOpen });
  const activeView = $(`.app-view[data-page="${view}"]`);
  requestAnimationFrame(() => animateView(activeView));
  window.scrollTo({ top: 0, behavior: motionQuery.matches ? "auto" : "smooth" });
}

const detailContent = {
  "gap-a": { tag: ["danger", "高风险"], title: "A公司 · 工行账户断档", desc: "工商银行 9481 缺少 07.01—07.21 流水，已影响 7 月结账。", fields: [["公司", "A公司"], ["账户", "工商银行 · 9481"], ["缺口期间", "2026.07.01—07.21 · 21 天"], ["影响", "7 月结账 · 账户覆盖 · 双边匹配"], ["当前状态", "已逾期 2 天"]], tip: "建议先向 A公司出纳发送补传提醒，补齐后在审核中心复核覆盖区间。", action: ["去审核中心处理", "audit"] },
  "match-bd": { tag: ["warning", "中风险"], title: "B公司 ↔ D公司 · 单边待匹配", desc: "D公司侧流水已到，B公司侧尚未确认，合计 312.00 万元。", fields: [["本方", "B公司"], ["对方", "D公司"], ["笔数 / 金额", "6 笔 · 312.00 万元"], ["候选情况", "金额与日期存在 2 个候选"], ["当前状态", "今日新增"]], tip: "建议按账号优先核对候选流水，金额与日期相同者先确认。", action: ["去审核中心匹配", "audit"] },
  "calib-f": { tag: ["warning", "中风险"], title: "F公司 · 起算区间待校准", desc: "01.01—01.16 无银行流水覆盖，公司已提交无业务说明。", fields: [["公司", "F公司"], ["账户", "农业银行 · 3650"], ["无覆盖期间", "2026.01.01—01.16"], ["现有依据", "公司已提交无业务说明"], ["当前状态", "待公司确认"]], tip: "无业务说明属于审计证据，复核通过后该区间标记为已校准，不生成银行流水。", action: ["去审核中心复核", "audit"] },
  "task-upload": { tag: ["danger", "最紧急"], title: "补传工商银行流水", desc: "账户尾号 9481 缺少 07.01—07.21 流水，已逾期 2 天。", fields: [["账户", "工商银行 · 9481"], ["缺少期间", "2026.07.01—07.21 · 21 天"], ["影响", "7 月账户覆盖与双边匹配"], ["截止", "08.05 集团结账日前"]], tip: "从工商银行网银导出 7 月流水后直接上传，系统会自动识别表头并重新计算匹配。", action: ["去上传流水", "upload"] },
  "task-match": { tag: ["warning", "待确认"], title: "确认 1 笔单边流水", desc: "07.18 转出 280.00 万元，系统找到 2 个对方候选。", fields: [["对方", "B公司"], ["日期 / 金额", "07.18 · 280.00 万元"], ["候选", "工商银行 9481（推荐）· 建设银行 2046"], ["核对点", "摘要与账号是否一致"]], tip: "系统推荐账号一致的候选，请核对回单后再确认。", action: ["去往来确认", "reconcile"] },
  "task-subject": { tag: ["warning", "待确认"], title: "确认往来科目", desc: "06.27 转出 600.00 万元，规则无法区分应收与其他应收。", fields: [["对方", "C公司"], ["日期 / 金额", "06.27 · 600.00 万元"], ["待确认", "应收 或 其他应收"], ["摘要", "资金调拨"]], tip: "科目只按确定性规则建议，拿不准时选“其他应收”并在说明里注明依据。", action: ["去确认科目", "reconcile"] },
  "task-notice": { tag: ["neutral", "提醒"], title: "阅读总账提醒", desc: "管理员要求 08.08 前完成 7 月银行流水确认。", fields: [["来自", "系统管理员 · 今天 09:30"], ["处理期限", "2026.08.08"], ["关联事项", "断档补传 · 2 项待确认往来"]], tip: "完成补传和两项确认后，再提交公司确认即可。", action: ["查看通知", "notifications"] },
  "acct-citic": { tag: ["success", "连续"], title: "中信银行 · 5316", desc: "基本户 · 起算日以来流水全部连续。", fields: [["账户类型", "基本户"], ["启用日期", "2026.01.01"], ["流水覆盖", "01.01—07.31 · 7 个月连续"], ["最近导入", "今天 09:42"]], tip: "该账户无需处理，8 月流水到期后正常上传即可。", action: ["查看银行账户", "accounts"] },
  "acct-abc": { tag: ["success", "连续"], title: "农业银行 · 3650", desc: "一般户 · 起算日以来流水全部连续。", fields: [["账户类型", "一般户"], ["启用日期", "2026.01.01"], ["流水覆盖", "01.01—07.31 · 7 个月连续"], ["最近导入", "08.01 08:01"]], tip: "该账户无需处理，8 月流水到期后正常上传即可。", action: ["查看银行账户", "accounts"] },
  "acct-icbc": { tag: ["danger", "断档"], title: "工商银行 · 9481", desc: "一般户 · 缺少 07.01—07.21 流水，已逾期 2 天。", fields: [["账户类型", "一般户"], ["缺口期间", "2026.07.01—07.21 · 21 天"], ["影响", "7 月结账与双边匹配"], ["最近导入", "07.31 16:18（6 月批次）"]], tip: "这是最紧急的一项：补齐后系统会自动重算覆盖与匹配。", action: ["去补传流水", "upload"] },
  "acct-ccb": { tag: ["success", "连续"], title: "建设银行 · 0845", desc: "一般户 · 起算日以来流水全部连续。", fields: [["账户类型", "一般户"], ["启用日期", "2026.01.01"], ["流水覆盖", "01.01—07.31 · 7 个月连续"], ["最近导入", "08.01 10:03"]], tip: "该账户无需处理，8 月流水到期后正常上传即可。", action: ["查看银行账户", "accounts"] },
};

function initDetailDrawer() {
  const triggers = $$("[data-detail]");
  if (!triggers.length) return;
  const drawer = document.createElement("aside");
  drawer.className = "detail-drawer";
  drawer.id = "detailDrawer";
  drawer.setAttribute("aria-label", "事项详情");
  drawer.innerHTML = `<header><div><span class="status" id="detailTag"></span><h2 id="detailTitle"></h2><p class="detail-desc" id="detailDesc"></p></div><button type="button" class="icon-button" data-close-detail aria-label="关闭详情" title="关闭详情"><svg><use href="icons.svg#x"/></svg></button></header><dl class="detail-fields" id="detailFields"></dl><div class="detail-tip" id="detailTip"></div><footer><button type="button" class="button secondary" data-close-detail>关闭</button><button type="button" class="button primary" id="detailAction"></button></footer>`;
  document.body.append(drawer);
  let lastTrigger = null;

  function closeDrawer({ restoreFocus = true } = {}) {
    drawer.classList.remove("is-open");
    if (restoreFocus && lastTrigger) lastTrigger.focus();
  }

  function openDetail(id, trigger) {
    const item = detailContent[id];
    if (!item) return;
    lastTrigger = trigger;
    const tag = $("#detailTag", drawer);
    tag.className = `status ${item.tag[0]}`;
    tag.textContent = item.tag[1];
    $("#detailTitle", drawer).textContent = item.title;
    $("#detailDesc", drawer).textContent = item.desc;
    const fields = $("#detailFields", drawer);
    fields.replaceChildren(...item.fields.map(([label, value]) => {
      const row = document.createElement("div");
      const dt = document.createElement("dt"); dt.textContent = label;
      const dd = document.createElement("dd"); dd.textContent = value;
      row.append(dt, dd);
      return row;
    }));
    const tip = $("#detailTip", drawer);
    tip.replaceChildren();
    const tipHeading = document.createElement("strong"); tipHeading.textContent = "处理建议";
    tip.append(tipHeading, document.createTextNode(item.tip));
    const action = $("#detailAction", drawer);
    action.textContent = item.action[0];
    action.onclick = () => {
      closeDrawer({ restoreFocus: false });
      if (item.action[1] === "upload") $("[data-open-upload]")?.click();
      else showView(item.action[1]);
    };
    drawer.classList.add("is-open");
    $("[data-close-detail]", drawer).focus();
  }

  $$("[data-close-detail]", drawer).forEach((button) => button.addEventListener("click", () => closeDrawer()));
  drawer.addEventListener("keydown", (event) => {
    if (event.key === "Escape") {
      event.stopPropagation();
      closeDrawer();
    }
  });

  triggers.forEach((element) => {
    element.addEventListener("click", (event) => {
      const innerButton = event.target.closest("button");
      if (innerButton && innerButton !== element) return;
      openDetail(element.dataset.detail, element);
    });
    if (element.tagName !== "BUTTON") {
      element.addEventListener("keydown", (event) => {
        if (event.key === "Enter" || event.key === " ") {
          event.preventDefault();
          openDetail(element.dataset.detail, element);
        }
      });
    }
  });
}

function initEntry() {
  const form = $("#loginForm");
  if (!form) return;
  if (!motionQuery.matches) {
    [$(".entry-brand"), $(".entry-statement"), ...$$(".entry-facts > div"), form].filter(Boolean).forEach((element, index) => {
      element.animate(
        [{ opacity: 0, transform: "translateY(16px)" }, { opacity: 1, transform: "translateY(0)" }],
        { duration: 520, delay: index * 65, easing: "cubic-bezier(.22,1,.36,1)", fill: "both" },
      );
    });
  }
  const roleInputs = $$('input[name="role"]', form);
  const username = $('input[name="username"]', form);
  const password = $('input[name="password"]', form);
  const action = $("#loginAction");
  const errorBox = $("#loginError");
  const changeSection = $("#changePassword");
  let pendingRole = null;

  function showError(message) {
    errorBox.textContent = message;
    errorBox.hidden = false;
  }

  function updateRole() {
    const role = $('input[name="role"]:checked', form).value;
    action.textContent = role === "admin" ? "进入总账管理端" : "进入公司业务端";
  }

  roleInputs.forEach((input) => input.addEventListener("change", updateRole));
  $("#togglePassword").addEventListener("click", (event) => {
    const visible = password.type === "text";
    password.type = visible ? "password" : "text";
    event.currentTarget.setAttribute("aria-label", visible ? "显示密码" : "隐藏密码");
    event.currentTarget.title = visible ? "显示密码" : "隐藏密码";
  });
  form.addEventListener("submit", async (event) => {
    event.preventDefault();
    errorBox.hidden = true;
    const role = pendingRole || $('input[name="role"]:checked', form).value;

    if (pendingRole) {
      const newPassword = $('input[name="new_password"]', form).value;
      const confirmPassword = $('input[name="confirm_password"]', form).value;
      if (newPassword !== confirmPassword) {
        showError("两次输入的新密码不一致。");
        return;
      }
      const changeResponse = await fetch("/api/password/change", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ old_password: password.value, new_password: newPassword }),
      }).catch(() => null);
      const changeResult = await changeResponse?.json().catch(() => ({}));
      if (!changeResponse || !changeResponse.ok) {
        showError(changeResult?.message || "修改密码失败，请稍后重试。");
        return;
      }
      window.location.href = role === "admin" ? "admin.html" : "company.html";
      return;
    }

    const response = await fetch("/api/login", {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({ username: username.value.trim(), password: password.value, portal: role }),
    }).catch(() => null);
    const result = await response?.json().catch(() => ({}));
    if (!response || !response.ok) {
      showError(result?.message || "登录服务暂时不可用，请稍后重试。");
      return;
    }
    if (result.must_change_password) {
      pendingRole = role;
      changeSection.hidden = false;
      action.textContent = "设置新密码并进入";
      $('input[name="new_password"]', form).focus();
      return;
    }
    window.location.href = role === "admin" ? "admin.html" : "company.html";
  });
}

async function initAuthGuard() {
  if (portal === "entry") return true;
  try {
    const response = await fetch("/api/me");
    if (response.status === 401) {
      window.location.href = "index.html";
      return false;
    }
    const me = await response.json();
    if (!response.ok || me.role !== portal) {
      window.location.href = "index.html";
      return false;
    }
    state.me = me;
    applyCompanyIdentity(me);
    return true;
  } catch {
    return true;
  }
}

function applyCompanyIdentity(me) {
  // The company portal always shows the session-bound company, never a
  // hard-coded one.
  if (portal !== "company" || !me?.company_name) return;
  const context = $(".company-context");
  if (context) {
    const mark = $("span", context);
    if (mark) mark.textContent = me.company_name.slice(0, 1);
    const name = $("strong", context);
    if (name) name.textContent = me.company_name;
  }
}

function initShell() {
  $$(".page-heading").forEach((heading) => {
    if (heading.querySelector(".menu-button")) return;
    const button = document.createElement("button");
    button.type = "button";
    button.className = "icon-button menu-button";
    button.setAttribute("aria-label", "打开导航");
    button.setAttribute("aria-expanded", "false");
    button.setAttribute("aria-controls", "sidebar");
    button.title = "打开导航";
    button.innerHTML = '<svg><use href="icons.svg#menu"></use></svg>';
    heading.prepend(button);
  });

  $$(".menu-button").forEach((menuButton) => {
    menuButton.addEventListener("click", () => {
      const open = $("#sidebar").classList.toggle("is-open");
      menuButton.setAttribute("aria-expanded", String(open));
      menuButton.setAttribute("aria-label", open ? "关闭导航" : "打开导航");
    });
  });

  $$(".nav-item").forEach((item) => {
    const label = $("span", item)?.textContent.trim();
    if (label) {
      item.setAttribute("aria-label", label);
      item.title = label;
    }
  });
  $$("[data-view]").forEach((button) => button.addEventListener("click", () => showView(button.dataset.view)));
  $$("[data-view-link]").forEach((button) => button.addEventListener("click", () => showView(button.dataset.viewLink)));
  $$('a.nav-item[href="index.html"]').forEach((link) => link.addEventListener("click", async (event) => {
    event.preventDefault();
    try {
      await fetch("/api/logout", { method: "POST" });
    } catch { /* 网络异常时仍然回到登录页 */ }
    window.location.href = "index.html";
  }));
  $$("[data-metric-link]").forEach((card) => {
    const activate = () => showView(card.dataset.metricLink);
    card.addEventListener("click", activate);
    card.addEventListener("keydown", (event) => {
      if (event.key === "Enter" || event.key === " ") {
        event.preventDefault();
        activate();
      }
    });
  });
  $$("[data-metric-action=\"upload\"]").forEach((card) => {
    const activate = () => $("[data-open-upload]")?.click();
    card.addEventListener("click", activate);
    card.addEventListener("keydown", (event) => {
      if (event.key === "Enter" || event.key === " ") {
        event.preventDefault();
        activate();
      }
    });
  });
  // Delegated: company table rows are rendered from the API after init.
  document.addEventListener("click", (event) => {
    const toastButton = event.target.closest("[data-toast]");
    if (toastButton) showToast(toastButton.dataset.toast);
  });
  $(".nav-item[data-view].is-active")?.setAttribute("aria-current", "page");

  $("#globalSearch")?.addEventListener("input", (event) => {
    const view = $(`.app-view[data-page="${state.currentView}"]`);
    const query = event.target.value.trim().toLowerCase();
    $$(".data-table tbody tr, .company-ledger, .notification-list article, .account-directory article", view).forEach((item) => {
      item.hidden = query ? !item.textContent.toLowerCase().includes(query) : false;
    });
  });

  document.addEventListener("click", (event) => {
    if ($("#sidebar")?.classList.contains("is-open") && !event.target.closest("#sidebar") && !event.target.closest(".menu-button")) closeNavigation({ restoreFocus: true });
  });
  document.addEventListener("keydown", (event) => {
    if (event.key === "Escape") closeNavigation({ restoreFocus: true });
  });

  initDetailDrawer();
  initMotion();
}

// ---------------------------------------------------------------------------
// B-44 intercompany balances: directory, pair drill-down and evidence drawer
// ---------------------------------------------------------------------------

const b44 = {
  subjectLabels: { receivable: "应收", payable: "应付", other_receivable: "其他应收", other_payable: "其他应付" },
  subjectCodes: { 应收: "receivable", 应付: "payable", 其他应收: "other_receivable", 其他应付: "other_payable" },
  reasonLabels: { subject_review: "待确认科目", unmatched_single: "单边未决", manual_pending: "手工记录待审" },
  from: "2026-01-01",
  cutoff: "2026-07-31",
  currency: "",
  companyNames: new Map(),
};

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

function fmtMoney(value) {
  const num = Number(value);
  return Number.isFinite(num) ? num.toLocaleString("zh-CN", { minimumFractionDigits: 2, maximumFractionDigits: 2 }) : "—";
}

function fmtAbsMoney(value) {
  const num = Number(value);
  return Number.isFinite(num) ? Math.abs(num).toLocaleString("zh-CN", { minimumFractionDigits: 2, maximumFractionDigits: 2 }) : "—";
}

function homeCrumb() {
  return portal === "admin" ? "往来查询" : "往来余额";
}

function resultDirection(signedOrDirection) {
  if (signedOrDirection === "receivable" || Number(signedOrDirection) > 0) return { className: "success", label: "应收" };
  if (signedOrDirection === "payable" || Number(signedOrDirection) < 0) return { className: "danger", label: "应付" };
  return { className: "neutral", label: "持平" };
}

function eventIsNegative(event) {
  return event.posting_kind === "reversal" || Boolean(event.is_repayment);
}

function amountWithCurrency(value, currency, { signed = false, negative = false } = {}) {
  const abs = fmtAbsMoney(value);
  const sign = (signed && (negative || Number(value) < 0)) ? "−" : "";
  const code = currency ? `<span class="currency-code">${esc(currency)}</span>` : "";
  return `<span class="amount-with-currency">${code}${sign}${abs}</span>`;
}

function accountCell(chip) {
  if (!chip || chip.visibility === "missing") return '<span class="status info">源行缺失</span>';
  if (chip.visibility === "masked") return `<span class="evidence-masked">${esc(chip.label || "按对方授权不可见")}</span>`;
  return `<span class="account-cell">${esc(chip.label || "—")}</span>`;
}

function pickAccount(event, companyId, side) {
  const isPayer = Number(event.payer_company_id) === Number(companyId);
  if (side === "own") return isPayer ? event.payer_account : event.payee_account;
  return isPayer ? event.payee_account : event.payer_account;
}

function eventSummaryText(event) {
  const text = String(event.summary || "").trim();
  if (text) return text;
  const reason = String(event.reason || "").trim();
  return reason ? reason.split(/\r?\n/)[0] : "—";
}

function sixLineHtml({ currency, debit, credit, signed, resultLabel, unresolved, cutoff, conservationNote }) {
  const direction = resultDirection(signed);
  const unresolvedBlock = unresolved && "html" in (unresolved || {}) ? unresolved : unresolvedText(unresolved);
  return `
    <div class="pair-balance-line is-six">
      <div><span>期初余额</span><strong class="amount-neutral">期初不可用</strong><small class="pair-open-note">B-45 前无可靠期初</small></div>
      <div><span>本期借方</span><strong>${amountWithCurrency(debit, currency)}</strong></div>
      <div><span>本期贷方</span><strong>${amountWithCurrency(credit, currency)}</strong></div>
      <div class="pair-final"><span>期末结果</span><strong><em class="status ${direction.className}" style="margin-right:6px">${direction.label}</em>${amountWithCurrency(signed, currency)}</strong><small class="pair-open-note">${esc(resultLabel || "期间净变动")}</small></div>
      <div class="pair-unresolved ${unresolvedBlock.active ? "" : "is-empty"}"><span>未决金额</span><strong>${amountWithCurrency(unresolvedBlock.gross ?? unresolved?.gross_amount ?? 0, currency)}</strong><small class="pair-open-note">${unresolvedBlock.count ?? unresolved?.count ?? 0} 笔</small></div>
      <div><span>截止日</span><strong class="amount-neutral">${fmtDate(cutoff)}</strong><small class="pair-cutoff">${esc(conservationNote || "按币种独立展示")}</small></div>
    </div>`;
}

function fmtDate(iso) {
  const text = String(iso || "");
  return text.slice(0, 10).replace(/-/g, ".");
}

function b44Status(item) {
  if (item.opening?.status !== "unavailable") {
    return { label: "期末余额", className: "success" };
  }
  return { label: "期间净变动", className: "neutral" };
}

function subjectOf(event, companyId) {
  if (event.perspective_company_id === companyId) return event.subject_code;
  return { receivable: "payable", payable: "receivable", other_receivable: "other_payable", other_payable: "other_receivable" }[event.subject_code] || null;
}

function directionChip(direction) {
  const label = direction === "outgoing" ? "转出" : "转入";
  const arrow = direction === "outgoing" ? "→" : "←";
  return `<span class="direction-chip" aria-label="${label}">${arrow} ${label}</span>`;
}

function eventStateChip(state) {
  if (state === "confirmed") return '<span class="status success">已确认</span>';
  if (state === "pending_subject") return '<span class="status info">待确认科目</span>';
  return '<span class="status warning">未决</span>';
}

function postingLabel(event) {
  if (event.posting_kind === "reversal") return "冲销";
  if (event.posting_kind === "adjustment") return "调整";
  return "正常";
}

function unresolvedText(unresolved) {
  const gross = Number(unresolved?.gross_amount || 0);
  const count = unresolved?.count || 0;
  if (!count) return { html: '<span class="status neutral">未决 0.00</span>', active: false, gross: 0, count: 0 };
  const reasons = Object.entries(unresolved.by_reason || {})
    .map(([key, value]) => `${b44.reasonLabels[key] || key} ${fmtAbsMoney(value.gross_amount)} · ${value.count} 笔`)
    .join("；");
  return {
    html: `<span class="status warning">未决 ${fmtAbsMoney(gross)} · ${count} 笔</span><small style="display:block;color:var(--color-ink-muted);font-size:10px" title="${esc(reasons)}">${esc(reasons)}</small>`,
    active: true,
    gross,
    count,
  };
}

const FOCUSABLE = 'a[href], button:not([disabled]), input:not([disabled]), select:not([disabled]), textarea:not([disabled]), [tabindex]:not([tabindex="-1"])';

function drawerFocusables(root) {
  return [...root.querySelectorAll(FOCUSABLE)].filter((node) => !node.hasAttribute("disabled") && node.getAttribute("aria-hidden") !== "true");
}

function cycleTab(index, length, shift) {
  if (!length) return 0;
  if (shift) return (index - 1 + length) % length;
  return (index + 1) % length;
}

function drawerEscAction(depth) {
  return depth > 1 ? "back" : "close";
}

function drawerState() {
  const drawer = $("#evidenceDrawer");
  const scrim = $("#drawerScrim");
  let opener = null;
  const stack = [];

  function paint() {
    if (!drawer || !stack.length) return;
    const layer = stack[stack.length - 1];
    $("#drawerTitle", drawer).textContent = layer.title;
    const breadcrumb = $("#drawerBreadcrumb", drawer);
    breadcrumb.replaceChildren();
    layer.crumbs.forEach((crumb, index) => {
      if (index) breadcrumb.append(document.createTextNode("/"));
      if (crumb.action) {
        const button = document.createElement("button");
        button.type = "button";
        button.textContent = crumb.label;
        button.addEventListener("click", crumb.action);
        breadcrumb.append(button);
      } else {
        const span = document.createElement("span");
        span.textContent = crumb.label;
        breadcrumb.append(span);
      }
    });
    const body = $("#drawerBody", drawer);
    body.innerHTML = layer.html;
    if (typeof layer.onMount === "function") layer.onMount(body);
    requestAnimationFrame(() => {
      const nodes = drawerFocusables(drawer);
      (nodes[0] || body).focus({ preventScroll: true });
      if (layer.restoreSelector) {
        const target = body.querySelector(layer.restoreSelector);
        if (target) target.focus({ preventScroll: true });
      }
    });
  }

  function open(triggerElement) {
    if (!drawer) return;
    if (!stack.length) opener = triggerElement || opener;
    drawer.classList.add("is-open");
    drawer.setAttribute("aria-hidden", "false");
    scrim?.classList.add("is-open");
  }

  function close({ restoreFocus = true } = {}) {
    if (!drawer) return;
    drawer.classList.remove("is-open");
    drawer.setAttribute("aria-hidden", "true");
    scrim?.classList.remove("is-open");
    stack.length = 0;
    if (restoreFocus && opener && document.contains(opener)) opener.focus();
    opener = null;
  }

  function back() {
    if (stack.length <= 1) {
      close();
      return;
    }
    const leaving = stack.pop();
    paint();
    requestAnimationFrame(() => {
      const body = $("#drawerBody", drawer);
      const selector = leaving.triggerSelector;
      const target = selector ? body?.querySelector(selector) : null;
      if (target) target.focus({ preventScroll: true });
    });
  }

  function renderLayer(title, crumbs, html, onMount, options = {}) {
    if (!drawer) return;
    if (options.replaceTop && stack.length) stack.pop();
    stack.push({
      title,
      crumbs,
      html,
      onMount,
      triggerSelector: options.triggerSelector || null,
      restoreSelector: options.restoreSelector || null,
    });
    paint();
  }

  $$("[data-close-drawer]").forEach((button) => button.addEventListener("click", () => close()));
  drawer?.addEventListener("keydown", (event) => {
    if (event.key === "Escape") {
      event.stopPropagation();
      event.preventDefault();
      if (drawerEscAction(stack.length) === "back") back();
      else close();
      return;
    }
    if (event.key !== "Tab" || !drawer.classList.contains("is-open")) return;
    const nodes = drawerFocusables(drawer);
    if (!nodes.length) return;
    const current = nodes.indexOf(document.activeElement);
    const next = cycleTab(current < 0 ? 0 : current, nodes.length, event.shiftKey);
    event.preventDefault();
    nodes[next].focus();
  });
  return { open, close, back, renderLayer, stack };
}

const drawer = drawerState();

function regionSkeleton(rows = 3) {
  return Array.from({ length: rows }, () => '<div class="skeleton-row skeleton-block"><span></span><span></span><span></span><span></span><span></span></div>').join("");
}

function regionError(container, message, retry) {
  if (!container) return;
  container.innerHTML = `<div class="state-panel is-error"><svg class="state-icon"><use href="icons.svg#circle-alert"/></svg><strong>余额计算暂时不可用</strong><p>${esc(message)}</p><button type="button" class="button secondary" data-retry>重试</button></div>`;
  container.querySelector("[data-retry]")?.addEventListener("click", retry);
}

function regionEmpty(container, title, hint, action) {
  if (!container) return;
  container.innerHTML = `<div class="state-panel"><svg class="state-icon"><use href="icons.svg#inbox"/></svg><strong>${esc(title)}</strong><p>${esc(hint)}</p>${action || ""}</div>`;
}

async function apiJson(url, options) {
  const response = await fetch(url, options).catch(() => null);
  if (response?.status === 401) {
    window.location.href = "index.html";
    return null;
  }
  const body = await response?.json().catch(() => null);
  if (!response || !response.ok) {
    throw new Error(body?.message || "请求失败");
  }
  return body;
}

function balanceQuery() {
  return `from=${encodeURIComponent(b44.from)}&cutoff=${encodeURIComponent(b44.cutoff)}${b44.currency ? `&currency=${encodeURIComponent(b44.currency)}` : ""}`;
}

// --- Admin: company balance directory --------------------------------------

async function loadAdminBalances(container) {
  if (!container) return;
  container.setAttribute("aria-busy", "true");
  container.innerHTML = regionSkeleton(3);
  try {
    const data = await apiJson(`/api/admin/intercompany/balances?${balanceQuery()}`);
    container.setAttribute("aria-busy", "false");
    if (!data.items.length) {
      regionEmpty(container, "该区间无往来事件", "请调整统计区间后重试", '<button type="button" class="button secondary" data-adjust-window>调整统计区间</button>');
      container.querySelector("[data-adjust-window]")?.addEventListener("click", () => document.querySelector("[data-balance-form] [name='from']")?.focus());
      return;
    }
    renderBalanceDirectory(container, data.items);
  } catch (error) {
    container.setAttribute("aria-busy", "false");
    regionError(container, error.message, () => loadAdminBalances(container));
  }
}

function renderBalanceDirectory(container, items) {
  container.replaceChildren(...items.map((item) => {
    const details = document.createElement("details");
    details.className = "company-ledger is-balances";
    details.dataset.companyId = item.company_id;
    const direction = resultDirection(item.result.direction);
    const unresolved = unresolvedText(item.unresolved);
    const name = item.company_name || "未命名公司";
    const summary = document.createElement("summary");
    summary.innerHTML = `
      <span class="company-name" title="${esc(name)}"><i>${esc(name.slice(0, 1))}</i><b>${esc(name)}</b><small class="currency-tag">${esc(item.currency)}</small></span>
      <strong class="amount debit ledger-hide-md">${amountWithCurrency(item.period.debit, item.currency)}</strong>
      <strong class="amount credit ledger-hide-md">${amountWithCurrency(item.period.credit, item.currency)}</strong>
      <span class="ledger-result"><em class="status ${direction.className}">${direction.label}</em><b>${amountWithCurrency(item.result.signed_amount, item.currency)}</b></span>
      <span class="ledger-unresolved ${unresolved.active ? "is-active" : "is-empty"}">${unresolved.html}</span>
      <span class="ledger-cutoff">截止 ${fmtDate(item.window.cutoff)}</span>
      <svg><use href="icons.svg#chevron-down"/></svg>`;
    details.append(summary);
    const breakdown = document.createElement("div");
    breakdown.className = "ledger-breakdown";
    breakdown.setAttribute("aria-live", "polite");
    breakdown.innerHTML = '<div class="skeleton-row skeleton-block"><span></span><span></span><span></span></div>';
    details.append(breakdown);
    details.addEventListener("toggle", () => {
      if (!details.open || details.dataset.loaded) return;
      details.dataset.loaded = "1";
      loadCompanyBreakdown(breakdown, item, () => details.open = false);
    });
    return details;
  }));
}

async function loadCompanyBreakdown(container, item, close) {
  try {
    const data = await apiJson(`/api/admin/intercompany/events?company_id=${item.company_id}&${balanceQuery()}`);
    const debit = [];
    const credit = [];
    const byPair = new Map();
    for (const event of data.items) {
      if (event.state !== "confirmed") continue;
      if (event.currency && item.currency && event.currency !== item.currency) continue;
      const isPayer = event.payer_company_id === item.company_id;
      const counterpartyId = isPayer ? event.payee_company_id : event.payer_company_id;
      const counterpartyName = isPayer ? event.payee_company_name : event.payer_company_name;
      const subject = subjectOf(event, item.company_id);
      const key = `${counterpartyId}|${subject}|${event.currency}`;
      const bucket = byPair.get(key) || { counterpartyId, counterpartyName, subject, currency: event.currency, count: 0, amount: 0, isPayer };
      bucket.count += 1;
      bucket.amount += Number(event.amount);
      byPair.set(key, bucket);
      (isPayer ? debit : credit).push(bucket);
    }
    if (!byPair.size) {
      regionEmpty(container, "暂无已确认明细", "该公司的确认往来将在科目确认后出现");
      return;
    }
    const section = (title, total, rows, currency) => `
      <section><header><h3>${title}</h3><strong>${amountWithCurrency(total, currency)}</strong></header>
      ${rows.map((row) => `
        <button type="button" class="subject-row" data-open-pair="${row.counterpartyId}" aria-label="查看与 ${esc(row.counterpartyName)} 的往来明细">
          <span><b>${esc(row.counterpartyName)}</b><small>${esc(b44.subjectLabels[row.subject] || row.subject)} · ${esc(row.currency)} · ${row.count} 笔</small></span>
          <strong>${amountWithCurrency(row.amount, row.currency)}</strong><svg><use href="icons.svg#chevron-right"/></svg>
        </button>`).join("")}
      </section>`;
    const debitRows = [...new Map(debit.map((row) => [`${row.counterpartyId}|${row.subject}`, row])).values()];
    const creditRows = [...new Map(credit.map((row) => [`${row.counterpartyId}|${row.subject}`, row])).values()];
    container.innerHTML = section("借方明细", debitRows.reduce((sum, row) => sum + row.amount, 0), debitRows, item.currency)
      + section("贷方明细", creditRows.reduce((sum, row) => sum + row.amount, 0), creditRows, item.currency);
    container.querySelectorAll("[data-open-pair]").forEach((button) => {
      button.addEventListener("click", () => {
        const counterpartyId = Number(button.dataset.openPair);
        drawer.open(button);
        renderAdminPair(item.company_id, counterpartyId, item.company_name);
      });
    });
  } catch (error) {
    regionError(container, error.message, close);
  }
}

function eventTableHead() {
  return `<thead><tr><th>交易日期</th><th>方向</th><th>科目</th><th>本方账户</th><th>对方账户</th><th>摘要</th><th>匹配状态</th><th class="number">金额</th></tr></thead>`;
}

function eventRowHtml(event, companyId) {
  const subject = subjectOf(event, companyId) || event.own_subject;
  const direction = event.direction || (event.payer_company_id === companyId ? "outgoing" : "incoming");
  const posting = event.posting_kind !== "normal" ? `<small>${postingLabel(event)}</small>` : "";
  const otherName = event.counterparty_company_name
    || (event.payer_company_id === companyId ? event.payee_company_name : event.payer_company_name);
  const summary = eventSummaryText(event);
  return `
    <tr class="event-row" data-subject-row="${subject || ""}" tabindex="0" role="button"
        aria-label="查看 ${fmtDate(event.effective_at)} 与 ${esc(otherName)} 的源行证据"
        data-event-id="${event.ledger_event_id}">
      <td>${fmtDate(event.effective_at)}${posting}</td>
      <td>${directionChip(direction)}</td>
      <td>${event.state === "confirmed" ? esc(b44.subjectLabels[subject] || event.own_subject_label || "") : '<span class="status info">待确认科目</span>'}</td>
      <td>${accountCell(pickAccount(event, companyId, "own"))}</td>
      <td>${accountCell(pickAccount(event, companyId, "counterparty"))}</td>
      <td class="summary-cell" title="${esc(summary)}">${esc(summary)}</td>
      <td>${eventStateChip(event.state)}</td>
      <td class="number">${amountWithCurrency(event.amount, event.currency, { signed: true, negative: eventIsNegative(event) })}</td>
    </tr>`;
}

function bindEventRows(root, tableId, companyId) {
  $$(`#${tableId} tbody tr.event-row`, root).forEach((row) => {
    const open = () => {
      renderEventEvidence(Number(row.dataset.eventId), companyId, {
        triggerSelector: `[data-event-id="${row.dataset.eventId}"]`,
      });
    };
    row.addEventListener("click", open);
    row.addEventListener("keydown", (event) => {
      if (event.key === "Enter" || event.key === " ") {
        event.preventDefault();
        open();
      }
    });
  });
}

// --- Admin: pair detail + events -------------------------------------------

async function renderAdminPair(companyId, counterpartyId, companyName, extraCrumbs = []) {
  const otherName = b44.companyNames.get(counterpartyId) || "对方公司";
  drawer.open();
  drawer.renderLayer(
    `${companyName || "公司"} ↔ ${otherName}`,
    [{ label: homeCrumb(), action: () => drawer.close() }, { label: `${companyName || companyId} ↔ ${otherName}` }],
    regionSkeleton(4),
  );
  try {
    const data = await apiJson(`/api/admin/intercompany/pairs/${companyId}/${counterpartyId}?${balanceQuery()}`);
    renderAdminPairBody(data, companyId, counterpartyId, extraCrumbs);
  } catch (error) {
    $("#drawerBody").innerHTML = `<div class="state-panel is-error"><svg class="state-icon"><use href="icons.svg#circle-alert"/></svg><strong>余额计算暂时不可用</strong><p>${esc(error.message)}</p><button type="button" class="button secondary" data-retry>重试</button></div>`;
    $("#drawerBody [data-retry]")?.addEventListener("click", () => renderAdminPair(companyId, counterpartyId, companyName, extraCrumbs));
  }
}

function renderAdminPairBody(data, companyId, counterpartyId) {
  const a = data.companies.a;
  const b = data.companies.b;
  const lines = (data.items || []).map((item) => sixLineHtml({
    currency: item.currency,
    debit: item.a.period.debit,
    credit: item.a.period.credit,
    signed: item.a.result.signed_amount,
    resultLabel: item.a.result.label,
    unresolved: item.unresolved,
    cutoff: data.window.cutoff,
    conservationNote: "双方守恒已校验",
  })).join("");
  const first = data.items[0];
  const subjectButtons = Object.values(first?.subjects || {}).map((subject) => `
    <button data-subject="${subject.subject_code}" aria-pressed="false">
      <span>${esc(subject.label)}</span><strong>${amountWithCurrency(Math.abs(Number(subject.a_debit) - Number(subject.a_credit)), first.currency)} · ${subject.count} 笔</strong>
    </button>`).join("");
  const eventCount = (data.items || []).reduce((sum, item) => sum + (item.trace?.event_count || 0), 0);
  const body = `
    ${lines}
    <div class="subject-strip">
      <button class="is-active" data-subject="all" aria-pressed="true"><span>全部往来</span><strong>${eventCount} 笔</strong></button>
      ${subjectButtons}
    </div>
    <div class="table-scroll"><table class="data-table event-table" id="pairEventsTable">
      ${eventTableHead()}
      <tbody><tr><td colspan="8"><div class="skeleton-row skeleton-block"><span></span><span></span><span></span><span></span><span></span></div></td></tr></tbody>
    </table></div>`;
  drawer.renderLayer(
    `${a.name} ↔ ${b.name}`,
    [
      { label: homeCrumb(), action: () => drawer.close() },
      { label: `${a.name} ↔ ${b.name}` },
    ],
    body,
    (root) => {
      const urls = (data.items || []).map((item) => item.trace.events_url);
      loadPairEvents(root, companyId, counterpartyId, urls);
      $$("[data-subject]", root).forEach((button) => button.addEventListener("click", () => {
        $$("[data-subject]", root).forEach((item) => {
          const active = item === button;
          item.classList.toggle("is-active", active);
          item.setAttribute("aria-pressed", String(active));
        });
        const subject = button.dataset.subject;
        $$("#pairEventsTable tbody tr[data-subject-row]").forEach((row) => {
          row.hidden = subject !== "all" && row.dataset.subjectRow !== subject;
        });
      }));
    },
    { replaceTop: true },
  );
}

async function loadPairEvents(root, companyId, counterpartyId, urls) {
  const tbody = $("#pairEventsTable tbody", root);
  if (!tbody) return;
  tbody.setAttribute("aria-busy", "true");
  const pageSize = 50;
  try {
    const pages = await Promise.all((Array.isArray(urls) ? urls : [urls]).map((url) => apiJson(`${url}&limit=${pageSize}`)));
    const items = pages.flatMap((page) => page.items || []);
    tbody.setAttribute("aria-busy", "false");
    if (!items.length) {
      tbody.innerHTML = '<tr><td colspan="8"><div class="state-panel"><svg class="state-icon"><use href="icons.svg#inbox"/></svg><strong>该区间无往来事件</strong><p>当前公司对在统计区间内没有逐笔事件</p></div></td></tr>';
      return;
    }
    tbody.innerHTML = items.map((event) => eventRowHtml(event, companyId)).join("");
    bindEventRows(root, "pairEventsTable", companyId);
    if (pages.some((page) => page.has_more)) {
      const footer = document.createElement("tr");
      footer.innerHTML = '<td colspan="8"><div class="state-panel" style="min-height:80px"><span style="font-size:12px">超过 50 笔，请在服务端按截止日分段查看</span></div></td>';
      tbody.append(footer);
    }
  } catch (error) {
    tbody.setAttribute("aria-busy", "false");
    tbody.innerHTML = `<tr><td colspan="8"><div class="state-panel is-error"><svg class="state-icon"><use href="icons.svg#circle-alert"/></svg><strong>逐笔事件加载失败</strong><p>${esc(error.message)}</p></div></td></tr>`;
  }
}

// --- Evidence drawer ---------------------------------------------------------

async function renderEventEvidence(eventId, companyId, options = {}) {
  const base = portal === "company" ? "/api/company/intercompany" : "/api/admin/intercompany";
  drawer.renderLayer("事件证据", [
    { label: homeCrumb(), action: () => drawer.close() },
    { label: "返回上一层", action: () => drawer.back() },
  ], regionSkeleton(5), null, { triggerSelector: options.triggerSelector });
  try {
    const [detail, evidence] = await Promise.all([
      apiJson(`${base}/events/${eventId}`),
      apiJson(`${base}/events/${eventId}/evidence`),
    ]);
    const event = detail.event;
    const direction = companyId ? (event.payer_company_id === companyId ? "outgoing" : "incoming") : null;
    const subjectLabel = companyId && event.subject_code ? (b44.subjectLabels[subjectOf(event, companyId)] || "") : (b44.subjectLabels[event.subject_code] || "");
    const blocks = evidence.blocks.map(renderEvidenceBlock).join('<div class="evidence-midline">双边匹配 · 已去重为同一事件</div>');
    drawer.renderLayer(
      `${fmtDate(event.effective_at)} 事件`,
      [
        { label: homeCrumb(), action: () => drawer.close() },
        { label: `${event.payer_company_name} ↔ ${event.payee_company_name}`, action: () => drawer.back() },
        { label: fmtDate(event.effective_at) },
      ],
      `
      <div class="pair-balance-line" style="grid-template-columns:repeat(3,1fr)">
        <div><span>方向</span><strong>${direction ? directionChip(direction) : ""}${esc(subjectLabel)}</strong></div>
        <div><span>金额</span><strong>${amountWithCurrency(event.amount, event.currency, { signed: true, negative: eventIsNegative(event) })}</strong></div>
        <div><span>匹配状态</span><strong>${eventStateChip(detail.state)}</strong></div>
      </div>
      <div class="evidence-stack">${blocks}</div>`,
      null,
      { replaceTop: true, triggerSelector: options.triggerSelector },
    );
  } catch (error) {
    $("#drawerBody").innerHTML = `<div class="state-panel is-error"><svg class="state-icon"><use href="icons.svg#circle-alert"/></svg><strong>证据加载失败</strong><p>${esc(error.message)}</p><button type="button" class="button secondary" data-retry>重试</button></div>`;
    $("#drawerBody [data-retry]")?.addEventListener("click", () => renderEventEvidence(eventId, companyId, options));
  }
}

function renderEvidenceBlock(block) {
  if (block.visibility === "missing") {
    return `<div class="evidence-block is-missing"><strong>对方源行缺失 · 当前为单边记录</strong><small>该侧没有可展示的银行或手工证据</small></div>`;
  }
  const sideLabel = block.side === "own" ? "本方" : "对方";
  const kindLabel = block.source_kind === "manual" ? "手工记录" : "银行源行";
  const title = `${sideLabel} · ${kindLabel}${block.visibility === "masked" ? "（按对方授权不可见）" : ""}`;
  if (block.visibility === "masked") {
    const fields = block.fields || {};
    const rows = [
      fields.company_name ? ["对方公司", fields.company_name] : null,
      fields.own_account_masked ? ["对方账号", fields.own_account_masked] : null,
      fields.state ? ["记录状态", fields.state] : null,
    ].filter(Boolean).map(([label, value]) => `<div><dt>${esc(label)}</dt><dd class="evidence-masked">${esc(value)}</dd></div>`).join("");
    return `<div class="evidence-block is-missing"><strong>${esc(title)}</strong><div class="evidence-grid">${rows || "<div><dt>可见范围</dt><dd class='evidence-masked'>仅对方公司名称与脱敏账号</dd></div>"}</div></div>`;
  }
  const fields = block.fields || {};
  const pairs = [];
  if (block.source_kind === "bank") {
    pairs.push(
      ["银行文件", fields.original_filename], ["工作表", fields.sheet_name],
      ["源行号", fields.source_row], ["交易时间", fields.transaction_at],
      ["收入", fields.income], ["支出", fields.expense],
      ["本方账号", fields.own_account], ["本方户名", fields.own_name],
      ["对方账号", fields.counterparty_account_masked || fields.counterparty_account], ["对方户名", fields.counterparty_name],
      ["摘要", fields.summary], ["用途", fields.purpose],
      ["流水号", fields.reference], ["币种", fields.currency],
      ["观察角色", fields.role],
    );
  } else {
    pairs.push(
      ["记录编号", fields.manual_record_id], ["提交公司", fields.company_name],
      ["对方公司", fields.counterparty_company_name], ["业务日期", fields.occurred_at],
      ["方向", fields.direction === "outgoing" ? "转出" : "转入"], ["金额", `${fields.amount} ${fields.currency}`],
      ["资金来源", fields.funding_source], ["建议科目", b44.subjectLabels[fields.requested_subject] || fields.requested_subject],
      ["摘要", fields.summary], ["补充说明", fields.reason],
      ["状态", fields.state],
    );
  }
  const grid = pairs.filter(([, value]) => value !== null && value !== undefined && value !== "")
    .map(([label, value]) => `<div><dt>${esc(label)}</dt><dd>${esc(value)}</dd></div>`).join("");
  return `<div class="evidence-block"><strong>${esc(title)}</strong><div class="evidence-grid">${grid}</div></div>`;
}

// --- Admin: subject-review and manual-record audit rows ----------------------

function appendSubjectReviewRow(item) {
  const tbody = $("#auditRows");
  if (!tbody) return;
  const row = document.createElement("tr");
  row.dataset.auditType = "科目";
  row.dataset.recordKind = "subject-review";
  row.dataset.ledgerEventId = item.ledger_event_id;
  row.dataset.perspectiveId = item.payer_company_id;
  row.dataset.expectedRevision = item.revision_id;
  row.dataset.company = item.payer_company_name;
  const suggestions = (item.suggestions || []).map((s) => `${s.suggested_company_name} · ${s.suggested_subject_label}`).join("；") || "无规则建议（需人工判定）";
  row.dataset.suggestions = JSON.stringify(item.suggestions || []);
  row.dataset.summary = item.summary || "";
  row.dataset.amount = String(item.amount || "");
  row.dataset.currency = item.currency || "";
  row.dataset.effectiveAt = item.effective_at || "";
  row.innerHTML = `
    <td><span class="task-level warning">中</span></td>
    <td><strong>${esc(item.payer_company_name)} ↔ ${esc(item.payee_company_name)}</strong><small>规则建议：${esc(suggestions)}</small></td>
    <td>科目待确认</td>
    <td>${fmtDate(item.effective_at)}</td>
    <td>${fmtMoney(item.amount)} ${esc(item.currency)}</td>
    <td><span class="status info">待确认科目</span></td>
    <td><button class="text-button" data-audit-action>确认科目</button></td>`;
  tbody.append(row);
}

function appendManualRecordReviewRow(record) {
  const tbody = $("#auditRows");
  if (!tbody) return;
  const row = document.createElement("tr");
  row.dataset.auditType = "手工";
  row.dataset.recordKind = "manual-review";
  row.dataset.recordId = record.id;
  row.dataset.expectedDecisionId = record.decision_id;
  row.dataset.company = record.company_name;
  row.dataset.submittedBy = record.submitted_by_username || "";
  row.dataset.attachmentName = record.attachment_name || "";
  row.dataset.reasonText = record.reason || "";
  row.dataset.summary = record.summary || "";
  row.dataset.amount = String(record.amount || "");
  row.dataset.currency = record.currency || "";
  row.innerHTML = `
    <td><span class="task-level warning">中</span></td>
    <td><strong>${esc(record.company_name)} · MR-${record.id}</strong><small>${esc(record.direction === "outgoing" ? "付款" : "收款")} ${fmtMoney(record.amount)} ${esc(record.currency)} · ${esc(record.counterparty_company_name)} · ${esc(b44.subjectLabels[record.requested_subject] || "")}</small></td>
    <td>手工记录</td>
    <td>${fmtDate(record.occurred_at)}</td>
    <td>${esc(record.summary || record.reason || "待补充说明")}</td>
    <td><span class="status warning">待复核</span></td>
    <td><button class="text-button" data-audit-action>复核</button></td>`;
  tbody.append(row);
}

function fillAuditEvidence(evidence, row, cells) {
  const heading = document.createElement("strong");
  heading.textContent = cells[1].querySelector("strong")?.textContent || "";
  evidence.append(heading);
  if (row.dataset.recordKind === "subject-review") {
    const meta = document.createElement("small");
    meta.textContent = `${fmtDate(row.dataset.effectiveAt)} · ${fmtAbsMoney(row.dataset.amount)} ${row.dataset.currency || ""}`.trim();
    evidence.append(meta);
    if (row.dataset.summary) {
      const summary = document.createElement("small");
      summary.textContent = `摘要：${row.dataset.summary}`;
      evidence.append(summary);
    }
    const suggestions = JSON.parse(row.dataset.suggestions || "[]");
    const list = document.createElement("ul");
    list.className = "candidate-list";
    if (!suggestions.length) {
      const item = document.createElement("li");
      item.textContent = "无规则建议（需退回或转异常，不能猜测科目）";
      list.append(item);
    } else {
      suggestions.forEach((suggestion) => {
        const item = document.createElement("li");
        item.textContent = `规则建议（只读）：${suggestion.suggested_company_name || ""} · ${suggestion.suggested_subject_label || suggestion.suggested_subject_code || ""}`;
        list.append(item);
      });
    }
    evidence.append(list);
    return;
  }
  if (row.dataset.recordKind === "manual-review") {
    const meta = document.createElement("small");
    meta.textContent = `提交人 ${row.dataset.submittedBy || "—"} · 附件 ${row.dataset.attachmentName || "无"}`;
    evidence.append(meta);
    const summary = document.createElement("small");
    summary.textContent = `摘要：${row.dataset.summary || "—"} · ${fmtAbsMoney(row.dataset.amount)} ${row.dataset.currency || ""}`.trim();
    evidence.append(summary);
    const reason = document.createElement("p");
    reason.className = "reason-full";
    reason.textContent = row.dataset.reasonText || cells[1].querySelector("small")?.textContent || "";
    evidence.append(reason);
    return;
  }
  const detail = document.createElement("small");
  detail.textContent = cells[1].querySelector("small")?.textContent || "";
  const source = document.createElement("small");
  source.textContent = `证据：${row.dataset.evidence || "银行原始行、导入批次、账户覆盖区间与公司说明"}`;
  evidence.append(detail, source);
}

async function loadAdminAuditQueue() {
  try {
    const [subjects, records] = await Promise.all([
      apiJson(`/api/admin/subject-reviews?${balanceQuery()}&limit=100`),
      apiJson("/api/admin/manual-records?limit=100"),
    ]);
    $$("#auditRows [data-record-kind='subject-review'], #auditRows [data-record-kind='manual-review']").forEach((row) => row.remove());
    (subjects.items || []).forEach(appendSubjectReviewRow);
    (records.records || []).filter((record) => record.state === "pending").forEach(appendManualRecordReviewRow);
    updateAuditCounts();
  } catch {
    /* the demo audit table stays visible if the queue cannot load */
  }
}

// --- Company portal: balances ------------------------------------------------

async function loadCompanyBalances() {
  const summaryLine = $("#companyBalanceGroups") || $("#companyBalanceLine");
  const counterpartyList = $("#companyCounterparties");
  const alertBox = $("#companyUnresolvedAlert");
  if (!summaryLine && !counterpartyList) return;
  if (summaryLine) summaryLine.innerHTML = regionSkeleton(1);
  if (counterpartyList) counterpartyList.innerHTML = regionSkeleton(2);
  try {
    const data = await apiJson(`/api/company/intercompany/balances?${balanceQuery()}`);
    $("#companyBalancePeriod").textContent = `统计口径 ${fmtDate(data.window.from)}—${fmtDate(data.window.cutoff)} · 期初不可用，仅显示期间净变动`;
    if (summaryLine) {
      const items = data.items || [];
      if (!items.length) {
        summaryLine.innerHTML = sixLineHtml({
          currency: "", debit: 0, credit: 0, signed: 0, resultLabel: "期间净变动",
          unresolved: { gross_amount: "0", count: 0 }, cutoff: data.window.cutoff,
        });
      } else {
        summaryLine.innerHTML = items.map((item) => sixLineHtml({
          currency: item.currency,
          debit: item.period.debit,
          credit: item.period.credit,
          signed: item.result.signed_amount,
          resultLabel: item.result.label,
          unresolved: item.unresolved,
          cutoff: item.window?.cutoff || data.window.cutoff,
        })).join("");
      }
    }
    const unresolvedCount = (data.items || []).reduce((sum, item) => sum + (item.unresolved?.count || 0), 0);
    if (alertBox) {
      if (unresolvedCount) {
        alertBox.hidden = false;
        const parts = (data.items || [])
          .filter((item) => item.unresolved?.count)
          .map((item) => `${item.currency} ${fmtAbsMoney(item.unresolved.gross_amount)}`);
        $("#companyUnresolvedText").textContent = `有 ${unresolvedCount} 笔往来未确认，合计 ${parts.join("、")}，不影响已确认余额`;
      } else {
        alertBox.hidden = true;
      }
    }
    renderCompanyCounterparties(counterpartyList, data.counterparties || [], data.window.cutoff);
  } catch (error) {
    if (summaryLine) regionError(summaryLine, error.message, loadCompanyBalances);
    if (counterpartyList) counterpartyList.innerHTML = "";
  }
}

function renderCompanyCounterparties(container, counterparties, cutoff) {
  if (!container) return;
  if (!counterparties.length) {
    regionEmpty(container, "暂无对方公司往来", "确认往来事件后，对方公司明细将在此展示");
    return;
  }
  container.replaceChildren(...counterparties.map((row) => {
    const article = document.createElement("article");
    article.className = "company-row is-balance-counterparty";
    article.tabIndex = 0;
    article.dataset.counterpartyId = row.counterparty_company_id;
    article.setAttribute("role", "button");
    article.setAttribute("aria-label", `查看与 ${row.counterparty_company_name} 的往来明细`);
    const direction = resultDirection(row.result.direction);
    const unresolved = unresolvedText(row.unresolved);
    article.innerHTML = `
      <span class="company-row-mark">${esc(row.counterparty_company_name.slice(0, 1))}</span>
      <div class="company-row-body"><strong title="${esc(row.counterparty_company_name)}">${esc(row.counterparty_company_name)}</strong><small class="currency-tag">${esc(row.currency)} · ${unresolved.active ? `未决 ${fmtAbsMoney(row.unresolved.gross_amount)} · ${row.unresolved.count} 笔` : "未决 0.00"}</small></div>
      <div class="company-row-figure"><strong class="result-direction"><em class="status ${direction.className}">${direction.label}</em> ${amountWithCurrency(row.result.signed_amount, row.currency)}</strong><small>截止 ${fmtDate(cutoff)}</small></div>`;
    const open = () => {
      drawer.open(article);
      renderCompanyPair(row.counterparty_company_id, row.counterparty_company_name);
    };
    article.addEventListener("click", open);
    article.addEventListener("keydown", (event) => {
      if (event.key === "Enter" || event.key === " ") {
        event.preventDefault();
        open();
      }
    });
    return article;
  }));
}

async function renderCompanyPair(counterpartyId, counterpartyName) {
  drawer.open();
  drawer.renderLayer(`${counterpartyName} · 往来明细`, [{ label: homeCrumb(), action: () => drawer.close() }], regionSkeleton(4));
  try {
    const data = await apiJson(`/api/company/intercompany/pairs/${counterpartyId}?${balanceQuery()}`);
    const own = data.companies.a;
    const lines = (data.items || []).map((item) => sixLineHtml({
      currency: item.currency,
      debit: item.a.period.debit,
      credit: item.a.period.credit,
      signed: item.a.result.signed_amount,
      resultLabel: item.a.result.label,
      unresolved: item.unresolved,
      cutoff: data.window.cutoff,
      conservationNote: "双方守恒已校验",
    })).join("");
    const body = `
      ${lines}
      <div class="table-scroll"><table class="data-table event-table" id="companyEventsTable">
        ${eventTableHead()}
        <tbody><tr><td colspan="8"><div class="skeleton-row skeleton-block"><span></span><span></span><span></span><span></span><span></span></div></td></tr></tbody>
      </table></div>`;
    drawer.renderLayer(
      `${own.name} ↔ ${counterpartyName}`,
      [{ label: homeCrumb(), action: () => drawer.close() }, { label: `${own.name} ↔ ${counterpartyName}` }],
      body,
      (root) => loadCompanyEvents(root, counterpartyId),
      { replaceTop: true },
    );
  } catch (error) {
    $("#drawerBody").innerHTML = `<div class="state-panel is-error"><svg class="state-icon"><use href="icons.svg#circle-alert"/></svg><strong>余额计算暂时不可用</strong><p>${esc(error.message)}</p><button type="button" class="button secondary" data-retry>重试</button></div>`;
    $("#drawerBody [data-retry]")?.addEventListener("click", () => renderCompanyPair(counterpartyId, counterpartyName));
  }
}

async function loadCompanyEvents(root, counterpartyId) {
  const tbody = $("#companyEventsTable tbody", root);
  if (!tbody) return;
  try {
    const data = await apiJson(`/api/company/intercompany/events?${balanceQuery()}&limit=100`);
    const ownCompanyId = state.me?.company_id;
    const filtered = (data.items || []).filter((event) => event.counterparty_company_id === counterpartyId);
    if (!filtered.length) {
      tbody.innerHTML = '<tr><td colspan="8"><div class="state-panel"><svg class="state-icon"><use href="icons.svg#inbox"/></svg><strong>该区间无往来事件</strong><p>当前统计区间内没有与对方公司的逐笔事件</p></div></td></tr>';
      return;
    }
    tbody.innerHTML = filtered.map((event) => eventRowHtml(event, ownCompanyId)).join("");
    bindEventRows(root, "companyEventsTable", ownCompanyId);
  } catch (error) {
    tbody.innerHTML = `<tr><td colspan="8"><div class="state-panel is-error"><svg class="state-icon"><use href="icons.svg#circle-alert"/></svg><strong>逐笔事件加载失败</strong><p>${esc(error.message)}</p></div></td></tr>`;
  }
}

// --- B-44 wiring -------------------------------------------------------------

function initBalanceQueries() {
  $$("[data-balance-form]").forEach((form) => {
    form.addEventListener("submit", (event) => {
      event.preventDefault();
      const from = $('[name="from"]', form).value;
      const cutoff = $('[name="cutoff"]', form).value;
      const currency = $('[name="currency"]', form).value || "";
      if (from > cutoff) {
        showToast("日期范围无效", "统计起始不能晚于统计截止");
        return;
      }
      b44.from = from;
      b44.cutoff = cutoff;
      b44.currency = currency;
      loadAdminBalances($("#balanceLedgers"));
      showToast("查询结果已更新", `${from} 至 ${cutoff} · 截止日口径`);
    });
  });

  // Dashboard quick-pair form: resolve company names to ids and open the pair.
  $$("[data-pair-form]").forEach((form) => form.addEventListener("submit", (event) => {
    event.preventDefault();
    const from = $('[name="from"]', form).value;
    const to = $('[name="to"]', form).value;
    if (from === to) {
      showToast("请选择两个不同的公司", "同公司账户调拨不进入公司间往来查询");
      return;
    }
    const fromId = [...b44.companyNames.entries()].find(([, name]) => name === from)?.[0];
    const toId = [...b44.companyNames.entries()].find(([, name]) => name === to)?.[0];
    if (!fromId || !toId) {
      showToast("无法解析公司主档", "请先在「公司与账号」中建立公司");
      return;
    }
    renderAdminPair(fromId, toId, from);
  }));

  // Dashboard quick-pair buttons and static pair links resolve to the drawer.
  $$("[data-pair-link]").forEach((button) => button.addEventListener("click", () => {
    const [fromName, toName] = String(button.dataset.pairLink || "").split("|");
    const fromId = [...b44.companyNames.entries()].find(([, name]) => name === fromName)?.[0];
    const toId = [...b44.companyNames.entries()].find(([, name]) => name === toName)?.[0];
    if (!fromId || !toId) {
      showToast("无法解析演示公司", "正式数据请先在「公司与账号」中建立公司主档");
      return;
    }
    renderAdminPair(fromId, toId, fromName);
  }));
}

async function loadCompanyOptions() {
  try {
    const data = await apiJson("/api/admin/companies");
    (data.companies || []).forEach((company) => b44.companyNames.set(company.id, company.name));
  } catch {
    /* best-effort name resolution for dashboard pair links */
  }
}

async function loadCompanyDirectoryOptions() {
  try {
    const data = await apiJson("/api/company/companies");
    (data.companies || []).forEach((company) => b44.companyNames.set(company.id, company.name));
    const select = $("#manualEntryForm [name='counterparty']");
    if (select) {
      const kept = [...select.options].filter((option) => option.dataset.keep);
      select.replaceChildren(...kept);
      (data.companies || []).forEach((company) => select.add(new Option(company.name, company.id)));
    }
  } catch {
    /* the manual form keeps the free-text counterparty as fallback */
  }
}

async function submitCompanyManualRecord(form) {
  const data = new FormData(form);
  const sourceOption = $('[name="sourceAccount"] option:checked', form);
  const counterpartyOption = $('[name="counterparty"] option:checked', form);
  const payload = {
    counterparty_company_id: Number(counterpartyOption?.value || 0) || null,
    occurred_at: `${String(data.get("transactionDate"))}T12:00:00`,
    direction: String(data.get("direction")) === "付款" ? "outgoing" : "incoming",
    amount: String(data.get("amount")),
    currency: "CNY",
    funding_source: sourceOption?.dataset.accountId ? "approved_bank_account" : "other",
    bank_account_id: sourceOption?.dataset.accountId ? Number(sourceOption.dataset.accountId) : null,
    requested_subject: b44.subjectCodes[String(data.get("subject"))] || "other_receivable",
    summary: String(data.get("summary") || "").trim(),
    reason: String(data.get("remark") || "").trim(),
    request_key: `mr-${Date.now().toString(36)}`,
  };
  const evidenceFile = data.get("evidence");
  if (evidenceFile instanceof File && evidenceFile.name) {
    payload.evidence = { attachment_name: evidenceFile.name };
  }
  if (!payload.counterparty_company_id) {
    showToast("请选择对方公司", "手工记录对方必须是集团内部公司");
    return;
  }
  if (!payload.amount || Number(payload.amount) <= 0) {
    showToast("金额无效", "金额必须大于零");
    return;
  }
  try {
    const result = await apiJson("/api/company/manual-records", {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify(payload),
    });
    form.reset();
    showToast("手工记录已提交", "总账复核前不会纳入公司间往来计算");
    await loadCompanyManualRecords();
    return result;
  } catch (error) {
    showToast("手工记录提交失败", error.message);
  }
}

async function loadCompanyManualRecords() {
  const tbody = $("#manualRecordRows");
  if (!tbody) return;
  try {
    const data = await apiJson("/api/company/manual-records?limit=100");
    $$('[data-stored-record]', tbody).forEach((row) => row.remove());
    (data.records || []).forEach((record) => appendCompanyManualRow(record));
    const pending = (data.records || []).filter((record) => record.state === "pending").length;
    const status = $("#manualPendingStatus");
    if (status) status.textContent = `${pending} 笔待总账复核`;
  } catch {
    /* keep the demo rows when the API is unavailable */
  }
}

function appendCompanyManualRow(record) {
  const tbody = $("#manualRecordRows");
  if (!tbody) return;
  const row = document.createElement("tr");
  row.dataset.storedRecord = record.id;
  const identity = document.createElement("td");
  const id = document.createElement("strong"); id.textContent = `MR-${record.id}`;
  const date = document.createElement("small"); date.textContent = fmtDate(record.occurred_at);
  identity.append(id, date);
  const direction = document.createElement("td");
  const directionName = document.createElement("strong"); directionName.textContent = record.direction === "outgoing" ? "付款" : "收款";
  const subject = document.createElement("small"); subject.textContent = b44.subjectLabels[record.requested_subject] || record.requested_subject;
  direction.append(directionName, subject);
  const source = document.createElement("td"); source.textContent = { approved_bank_account: "已批准账户", personal_transit: "个人过账", other: "其他来源" }[record.funding_source] || record.funding_source;
  const counterparty = document.createElement("td");
  const counterpartyName = document.createElement("strong"); counterpartyName.textContent = record.counterparty_company_name;
  counterparty.append(counterpartyName);
  const summary = document.createElement("td"); summary.textContent = record.summary || record.reason || "—";
  const amount = document.createElement("td"); amount.className = "number"; amount.textContent = fmtMoney(record.amount);
  const statusCell = document.createElement("td");
  const stateMap = { pending: ["warning", "待总账复核"], approved: ["success", "已确认"], returned: ["danger", "已退回"], exception: ["neutral", "异常待处理"], reversed: ["neutral", "已冲销"] };
  const [className, label] = stateMap[record.state] || ["neutral", record.state];
  const badge = document.createElement("span"); badge.className = `status ${className}`; badge.textContent = label;
  statusCell.append(badge);
  row.append(identity, direction, source, counterparty, summary, amount, statusCell);
  tbody.append(row);
}

function renderCompanyManualRecords() {
  const tbody = $("#manualRecordRows");
  if (!tbody) return;
  $$('[data-stored-record]', tbody).forEach((row) => row.remove());
  const records = readStoredRecords(storageKeys.manual).filter((record) => record.company === "A公司");
  [...records].reverse().forEach((record) => {
    const row = document.createElement("tr");
    row.dataset.storedRecord = record.id;
    const identity = document.createElement("td");
    const id = document.createElement("strong"); id.textContent = record.id;
    const date = document.createElement("small"); date.textContent = record.transactionDate;
    identity.append(id, date);
    const direction = document.createElement("td");
    const directionName = document.createElement("strong"); directionName.textContent = record.direction;
    const subject = document.createElement("small"); subject.textContent = record.subject;
    direction.append(directionName, subject);
    const source = document.createElement("td"); source.textContent = record.sourceAccount;
    const counterparty = document.createElement("td");
    const counterpartyName = document.createElement("strong"); counterpartyName.textContent = record.counterparty;
    const counterpartyType = document.createElement("small"); counterpartyType.textContent = record.counterpartyType;
    counterparty.append(counterpartyName, counterpartyType);
    const summary = document.createElement("td"); summary.textContent = record.summary;
    const amount = document.createElement("td"); amount.className = "number"; amount.textContent = formatCurrency(record.amount);
    const statusCell = document.createElement("td");
    const status = recordStatus(record.status);
    const badge = document.createElement("span"); badge.className = `status ${status.className}`; badge.textContent = status.label;
    statusCell.append(badge);
    row.append(identity, direction, source, counterparty, summary, amount, statusCell);
    tbody.append(row);
  });
  const pending = records.filter((record) => record.status === "待总账复核").length + 1;
  if ($("#manualPendingStatus")) $("#manualPendingStatus").textContent = `${pending} 笔待总账复核`;
}

function fillAccountSelects(accounts) {
  const usable = accounts.filter((account) => account.usable);
  [$("#accountSelect"), $('#manualEntryForm [name="sourceAccount"]')].forEach((select) => {
    if (!select) return;
    const kept = [...select.options].filter((option) => option.value === "" || option.textContent === "个人过账");
    select.replaceChildren(...kept);
    usable.forEach((account) => {
      const value = `${account.bank_name} · ${accountTail(account.account_number_masked)}`;
      const option = new Option(value, value);
      option.dataset.accountId = account.id;
      select.add(option);
    });
  });
}

function renderCompanyAccounts(accounts) {
  const directory = $("#accountDirectory");
  if (directory) {
    directory.replaceChildren(...accounts.map((account) => {
      const article = document.createElement("article");
      const header = document.createElement("header");
      const mark = document.createElement("span"); mark.className = "bank-mark"; mark.textContent = account.bank_name.slice(0, 1);
      const identity = document.createElement("div");
      const name = document.createElement("strong"); name.textContent = account.bank_name;
      const meta = document.createElement("small"); meta.textContent = `${account.account_type} · 尾号 ${accountTail(account.account_number_masked)}`;
      identity.append(name, meta);
      const status = recordStatus(accountStatusLabel(account.status));
      const badge = document.createElement("em"); badge.className = `status ${status.className}`; badge.textContent = status.label;
      header.append(mark, identity, badge);
      const details = document.createElement("dl");
      const rows = [
        ["申请启用", account.effective_from || "待审核确定"],
        ["流水覆盖", account.usable ? "尚未上传" : "不参与计算"],
        ["提交时间", String(account.created_at || "").slice(0, 10) || "—"],
      ];
      if (account.status === "returned" && account.review_reason) rows.push(["退回原因", account.review_reason]);
      if (account.status === "disabled" && account.effective_to) rows.push(["停用日期", account.effective_to]);
      rows.forEach(([term, value]) => {
        const wrapper = document.createElement("div");
        const dt = document.createElement("dt"); dt.textContent = term;
        const dd = document.createElement("dd"); dd.textContent = value;
        wrapper.append(dt, dd); details.append(wrapper);
      });
      article.append(header, details);
      return article;
    }));
  }
  fillAccountSelects(accounts);
}

async function loadCompanyAccounts() {
  const response = await fetch("/api/company/accounts").catch(() => null);
  if (response?.status === 401 || response?.status === 403) {
    window.location.href = "index.html";
    return;
  }
  if (!response?.ok) return;
  const result = await response.json().catch(() => null);
  if (result?.accounts) renderCompanyAccounts(result.accounts);
}

function appendAdminReviewRow(record, kind) {
  const tbody = $("#auditRows");
  if (!tbody) return;
  const isAccount = kind === "account";
  // Account rows come from the server (full number visible only in this
  // authorized admin view); manual records are still browser-local demo data.
  const statusLabel = isAccount ? accountStatusLabel(record.status) : record.status;
  const row = document.createElement("tr");
  row.dataset.storedReview = record.id;
  row.dataset.recordId = record.id;
  row.dataset.recordKind = kind;
  if (isAccount) row.dataset.accountId = record.id;
  row.dataset.auditType = isAccount ? "账户" : "手工";
  row.dataset.company = isAccount ? record.company_name : record.company;
  row.dataset.evidence = isAccount
    ? "公司提交资料、开户行、账号、账户类型与启用日期"
    : "公司手工记录、关联银行流水号、证明附件与提交说明";
  if (statusLabel !== "待复核" && statusLabel !== "待总账复核") row.dataset.resolved = "true";

  const riskCell = document.createElement("td");
  const risk = document.createElement("span"); risk.className = "task-level warning"; risk.textContent = "中"; riskCell.append(risk);
  const identityCell = document.createElement("td");
  const identity = document.createElement("strong");
  const detail = document.createElement("small");
  const typeCell = document.createElement("td");
  const periodCell = document.createElement("td");
  const impactCell = document.createElement("td");
  if (isAccount) {
    identity.textContent = `${record.company_name} · ${record.bank_name} ${String(record.account_number).slice(-4)}`;
    detail.textContent = `${record.account_type} · 完整账号 ${record.account_number}`;
    typeCell.textContent = "账户登记";
    periodCell.textContent = record.effective_from || "待审核确定";
    impactCell.textContent = "账户识别与流水上传";
  } else {
    identity.textContent = `${record.company} · ${record.id}`;
    detail.textContent = `${record.direction} ${formatCurrency(record.amount)} 元 · ${record.counterparty} · ${record.subject}`;
    typeCell.textContent = "手工记录";
    periodCell.textContent = record.transactionDate;
    impactCell.textContent = `待确认往来 ${(Number(record.amount) / 10000).toFixed(2)} 万元`;
  }
  identityCell.append(identity, detail);
  const statusCell = document.createElement("td");
  const status = recordStatus(statusLabel);
  const badge = document.createElement("span"); badge.className = `status ${status.className}`; badge.textContent = status.label; statusCell.append(badge);
  const actionCell = document.createElement("td");
  const action = document.createElement("button"); action.className = "text-button"; action.dataset.auditAction = "";
  if (isAccount) row.dataset.accountStatus = record.status;
  action.textContent = row.dataset.resolved
    ? (isAccount && record.status === "active" ? "管理" : "查看记录")
    : "复核";
  if (row.dataset.resolved) {
    const decisionLabels = { active: "复核通过并启用账户", returned: "退回公司修改", disabled: "停用并驳回" };
    const decisionLabel = isAccount ? decisionLabels[record.status] || statusLabel : record.decision || record.status;
    const reasonText = (isAccount ? record.review_reason : record.reviewReason) || "已留痕";
    action.dataset.record = `${decisionLabel} · ${reasonText}`;
    action.dataset.decision = decisionLabel;
    action.dataset.reason = reasonText;
    action.dataset.processedAt = (isAccount ? record.reviewed_at : record.reviewedAt) || "时间未记录";
  }
  actionCell.append(action);
  row.append(riskCell, identityCell, typeCell, periodCell, impactCell, statusCell, actionCell);
  tbody.append(row);
}

async function renderAdminAccountReviews() {
  const tbody = $("#auditRows");
  if (!tbody) return;
  $$('[data-stored-review][data-record-kind="account"]', tbody).forEach((row) => row.remove());
  const response = await fetch("/api/admin/accounts").catch(() => null);
  if (!response?.ok) return;
  const result = await response.json().catch(() => null);
  (result?.accounts || []).forEach((account) => appendAdminReviewRow(account, "account"));
  updateAuditCounts();
}

function renderStoredAdminReviews() {
  if (!$("#auditRows")) return;
  $$('[data-stored-review]', $("#auditRows")).forEach((row) => row.remove());
  readStoredRecords(storageKeys.manual).forEach((record) => appendAdminReviewRow(record, "manual"));
  renderAdminAccountReviews();
}

function updateStoredReview(kind, id, status, decision, reviewReason, reviewedAt) {
  if (kind !== "manual" || !id) return;
  const records = readStoredRecords(storageKeys.manual);
  const record = records.find((item) => item.id === id);
  if (!record) return;
  Object.assign(record, { status, decision, reviewReason, reviewedAt });
  writeStoredRecords(storageKeys.manual, records);
}

function updateAuditCounts() {
  const rows = $$("#auditRows tr");
  const unresolved = rows.filter((row) => row.dataset.resolved !== "true");
  $$('[data-audit-filter]').forEach((button) => {
    const type = button.dataset.auditFilter;
    const count = unresolved.filter((row) => type === "all" || row.dataset.auditType === type).length;
    button.textContent = `${button.dataset.label} ${count}`;
  });
  const badge = $('.nav-item[data-view="audit"] b');
  if (badge) badge.textContent = unresolved.length;
}

function companyStatusBadge(status) {
  if (status === "preparing") return { className: "neutral", label: "筹备中" };
  if (status === "disabled") return { className: "danger", label: "已停用" };
  return { className: "success", label: "正常" };
}

function renderAdminCompanyTable(companies) {
  const tbody = $("#companyTable tbody");
  if (!tbody) return;
  tbody.replaceChildren(...companies.map((company) => {
    const row = document.createElement("tr");
    const nameCell = document.createElement("td");
    const name = document.createElement("strong"); name.textContent = company.name;
    const code = document.createElement("small"); code.textContent = `COMP-${String(company.id).padStart(3, "0")}`;
    nameCell.append(name, code);
    const credit = document.createElement("td"); credit.textContent = company.credit_code || "待补充";
    const accounts = document.createElement("td"); accounts.textContent = `${company.account_count ?? 0} 个`;
    const usernames = document.createElement("td"); usernames.textContent = company.usernames || "未创建";
    const cashier = document.createElement("td"); cashier.textContent = company.cashier_name || "未指定";
    const statusCell = document.createElement("td");
    const badge = companyStatusBadge(company.status);
    statusCell.innerHTML = `<span class="status ${badge.className}">${badge.label}</span>`;
    const actionCell = document.createElement("td");
    actionCell.innerHTML = `<button class="text-button" data-toast="已打开 ${company.name} 主档">管理</button>`;
    row.append(nameCell, credit, accounts, usernames, cashier, statusCell, actionCell);
    return row;
  }));
}

function setSelectOptions(select, names, { keepFirst = false } = {}) {
  if (!select || !names.length) return;
  const kept = keepFirst && select.options.length ? [select.options[0].cloneNode(true)] : [];
  select.replaceChildren(...kept, ...names.map((name) => new Option(name, name)));
}

function fillCompanySelects(names) {
  // Every company picker is driven by master data: a newly created company
  // appears in pair queries, audit filters, flow filters and reminders
  // without any code change.
  $$("[data-pair-form]").forEach((form) => {
    setSelectOptions($('[name="from"]', form), names);
    setSelectOptions($('[name="to"]', form), names);
    const toSelect = $('[name="to"]', form);
    if (toSelect && names.length > 1) toSelect.value = names[1];
  });
  setSelectOptions($("#auditCompany"), names, { keepFirst: true });
  setSelectOptions($("#flowCompany"), names, { keepFirst: true });
  setSelectOptions($('#reminderForm [name="company"]'), names, { keepFirst: true });
  setSelectOptions($('#openingDialog [name="from"]'), names);
  setSelectOptions($('#openingDialog [name="to"]'), names);
}

async function loadAdminCompanies() {
  const response = await fetch("/api/admin/companies").catch(() => null);
  if (!response?.ok) return;
  const result = await response.json().catch(() => null);
  const companies = result?.companies || [];
  renderAdminCompanyTable(companies);
  fillCompanySelects(companies.map((company) => company.name));
}

function initAdmin() {
  renderStoredAdminReviews();
  updateAuditCounts();
  loadAdminCompanies();
  initBalanceQueries();
  loadCompanyOptions().then(() => {
    loadAdminBalances($("#balanceLedgers"));
  });
  loadAdminAuditQueue();
  const companySearch = $('[data-filter-target="companyLedgers"]');
  companySearch?.addEventListener("input", () => {
    const query = companySearch.value.trim().toLowerCase();
    $$("#companyLedgers .company-ledger").forEach((item) => { item.hidden = query ? !item.textContent.toLowerCase().includes(query) : false; });
  });

  let activeAuditType = "all";
  function filterAuditRows() {
    const company = $("#auditCompany")?.value || "全部公司";
    $$(".audit-table tbody tr").forEach((row) => {
      const typeMatches = activeAuditType === "all" || row.dataset.auditType === activeAuditType;
      const companyMatches = company === "全部公司" || row.dataset.company === company;
      row.hidden = !(typeMatches && companyMatches);
    });
  }
  $$("[data-audit-filter]").forEach((button) => button.addEventListener("click", () => {
    activeAuditType = button.dataset.auditFilter;
    $$("[data-audit-filter]").forEach((item) => {
      const active = item === button;
      item.classList.toggle("is-active", active);
      item.setAttribute("aria-pressed", String(active));
    });
    filterAuditRows();
  }));
  $("#auditCompany")?.addEventListener("change", filterAuditRows);

  const TRIAGE_DECISIONS = ["确认并纳入计算", "退回公司补充材料", "转为异常"];
  const auditDialog = $("#auditDialog");
  const syncExceptionNote = () => {
    const note = $("#auditExceptionNote");
    const decision = $('#auditForm [name="decision"]');
    if (note) note.hidden = !String(decision?.value || "").includes("转为异常");
  };
  $$('[data-close-audit]').forEach((button) => button.addEventListener("click", () => auditDialog.close()));
  $("#auditForm [name='decision']")?.addEventListener("change", syncExceptionNote);
  // Delegated: account review rows arrive asynchronously from the API.
  $("#auditRows")?.addEventListener("click", (event) => {
    const button = event.target.closest("[data-audit-action]");
    if (!button) return;
    const row = button.closest("tr");
    state.auditRow = row;
    const cells = $$('td', row);
    const form = $("#auditForm");
    const decision = $('[name="decision"]', form);
    const reason = $('[name="reason"]', form);
    const submit = $('button[type="submit"]', form);
    form.reset();
    const isActiveAccount = row.dataset.recordKind === "account" && row.dataset.accountStatus === "active";
    const decisions = row.dataset.recordKind === "account"
      ? (isActiveAccount ? ["停用并驳回"] : ["复核通过并启用账户", "退回公司修改", "停用并驳回"])
      : (row.dataset.recordKind === "subject-review" || row.dataset.recordKind === "manual-review")
        ? TRIAGE_DECISIONS
        : TRIAGE_DECISIONS;
    decision.replaceChildren(new Option("请选择", ""), ...decisions.map((item) => new Option(item, item)));
    decision.disabled = false;
    reason.disabled = false;
    submit.hidden = false;
    $("#auditDialogTitle").textContent = `${cells[2].innerText.trim()} · ${cells[1].querySelector("strong").textContent}`;
    $("#auditDialogMeta").textContent = `${cells[3].innerText.trim()} · 影响 ${cells[4].innerText.trim()}`;
    const evidence = $("#auditEvidence");
    evidence.replaceChildren();
    fillAuditEvidence(evidence, row, cells);
    syncExceptionNote();
    if (button.dataset.record && !isActiveAccount) {
      decision.value = button.dataset.decision;
      reason.value = button.dataset.reason;
      decision.disabled = true;
      reason.disabled = true;
      submit.hidden = true;
      $("#auditDialogMeta").textContent = `已处理 · ${button.dataset.processedAt} · 系统管理员`;
      const record = document.createElement("small");
      record.textContent = `处理记录：${button.dataset.record}`;
      evidence.append(record);
      syncExceptionNote();
    }
    auditDialog.showModal();
  });
  $("#auditForm")?.addEventListener("submit", async (event) => {
    event.preventDefault();
    const data = new FormData(event.currentTarget);
    const row = state.auditRow;
    const decision = String(data.get("decision"));
    const reason = String(data.get("reason"));

    // B-44 subject review: confirm uses the rule suggestion; return/exception park the event.
    if (row.dataset.recordKind === "subject-review") {
      const actionMap = {
        "确认并纳入计算": "confirm",
        "退回公司补充材料": "return",
        "转为异常": "exception",
      };
      const action = actionMap[decision];
      if (!action) {
        showToast("请选择处理决定", "科目审核仅支持确认、退回或转异常");
        return;
      }
      const suggestions = JSON.parse(row.dataset.suggestions || "[]");
      const suggested = suggestions[0];
      if (action === "confirm" && !suggested?.suggested_subject_code) {
        showToast("没有可入账的规则建议", "请退回公司补充材料或转为异常，不要猜测科目");
        return;
      }
      const body = {
        perspective_company_id: Number(suggested?.suggested_perspective_company_id || row.dataset.perspectiveId),
        reason,
        expected_revision: Number(row.dataset.expectedRevision),
        request_key: `subj-${row.dataset.ledgerEventId}-${Date.now().toString(36)}`,
      };
      if (action === "confirm") {
        body.subject_code = suggested.suggested_subject_code;
      } else {
        body.action = action;
      }
      const response = await apiJson(`/api/admin/intercompany/events/${row.dataset.ledgerEventId}/subject-decisions`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(body),
      }).catch(() => null);
      if (!response) {
        showToast("科目处理失败", "请刷新后重试");
        return;
      }
      row.remove();
      updateAuditCounts();
      auditDialog.close();
      event.currentTarget.reset();
      syncExceptionNote();
      showToast(
        action === "confirm" ? "科目已确认并纳入计算" : action === "return" ? "已退回公司补充材料" : "已转为异常",
        action === "confirm" ? `确认科目：${b44.subjectLabels[suggested.suggested_subject_code]} · 已写入修订链` : "当前记录暂不纳入余额计算",
      );
      await loadAdminAuditQueue();
      return;
    }

    // B-44 manual record review: approve / return / exception.
    if (row.dataset.recordKind === "manual-review") {
      const actionMap = {
        "确认并纳入计算": "approve_new",
        "退回公司补充材料": "return",
        "转为异常": "exception",
        "转为异常待后续处理": "exception",
      };
      const action = actionMap[decision];
      if (!action) {
        showToast("请选择处理决定", "人工记录仅支持确认、退回或转异常");
        return;
      }
      const response = await apiJson(`/api/admin/manual-records/${row.dataset.recordId}/decisions`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({
          action,
          reason,
          expected_decision_id: Number(row.dataset.expectedDecisionId),
          request_key: `mr-dec-${row.dataset.recordId}-${Date.now().toString(36)}`,
        }),
      }).catch(() => null);
      if (!response) {
        showToast("审核结果提交失败", "请刷新后重试");
        return;
      }
      const status = $("[data-audit-action]", row);
      if (status) status.textContent = "查看记录";
      row.dataset.resolved = "true";
      const statusCell = row.children[5];
      statusCell.innerHTML = `<span class="status ${action === "approve_new" ? "success" : "neutral"}">${action === "approve_new" ? "已确认" : action === "return" ? "已退回" : "异常待处理"}</span>`;
      updateAuditCounts();
      auditDialog.close();
      event.currentTarget.reset();
      showToast("审核结果已记录", action === "approve_new" ? "已批准的手工记录将幂等纳入往来计算" : "当前记录不参与往来计算");
      await loadAdminAuditQueue();
      return;
    }

    const approved = decision.includes("通过") || decision.includes("确认并纳入");
    const returned = decision.includes("退回");
    let storedStatus;
    let reviewedAccount = null;
    if (row.dataset.recordKind === "account" && row.dataset.accountId) {
      // Server-side review: the account only becomes usable after this succeeds.
      const apiDecision = approved ? "approve" : returned ? "return" : "disable";
      const response = await fetch(`/api/admin/accounts/${row.dataset.accountId}/review`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ decision: apiDecision, reason }),
      }).catch(() => null);
      if (response?.status === 401) {
        window.location.href = "index.html";
        return;
      }
      const result = await response?.json().catch(() => ({}));
      if (!response || !response.ok) {
        showToast("审核结果提交失败", result?.message || "请稍后重试");
        return;
      }
      reviewedAccount = result.account;
      storedStatus = accountStatusLabel(result.account?.status);
    } else {
      storedStatus = approved
        ? (row.dataset.recordKind === "account" ? "已启用" : "已确认")
        : (returned ? "已退回" : "异常待处理");
      updateStoredReview(row.dataset.recordKind, row.dataset.recordId, storedStatus, decision, reason, new Date().toLocaleString("zh-CN", { hour12: false }));
    }
    const status = recordStatus(storedStatus);
    const statusCell = row.children[5];
    statusCell.innerHTML = `<span class="status ${status.className}">${status.label}</span>`;
    row.dataset.resolved = "true";
    const action = $("[data-audit-action]", row);
    if (reviewedAccount) {
      row.dataset.accountStatus = reviewedAccount.status;
      action.textContent = reviewedAccount.status === "active" ? "管理" : "查看记录";
    } else {
      action.textContent = "查看记录";
    }
    action.dataset.record = `${decision} · ${data.get("reason")}`;
    action.dataset.decision = decision;
    action.dataset.reason = data.get("reason");
    action.dataset.processedAt = new Date().toLocaleString("zh-CN", { hour12: false });
    updateAuditCounts();
    auditDialog.close();
    event.currentTarget.reset();
    showToast("审核结果已记录", approved ? "已通过的数据取得相应使用或核算资格" : "当前记录不参与自动核算");
  });

  const dialog = $("#companyDialog");
  $("#openCompanyDialog")?.addEventListener("click", () => dialog.showModal());
  $("#companyForm")?.addEventListener("submit", async (event) => {
    event.preventDefault();
    const data = new FormData(event.currentTarget);
    const companyName = String(data.get("companyName") || "").trim();
    const loginName = String(data.get("loginName") || "").trim();
    const createUser = data.get("createUser") !== null;

    const payload = {
      name: companyName,
      credit_code: String(data.get("creditCode") || "").trim(),
      cashier_name: String(data.get("cashier") || "").trim(),
    };
    if (createUser && loginName) payload.username = loginName;

    const response = await fetch("/api/admin/companies", {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify(payload),
    }).catch(() => null);
    if (response?.status === 401) {
      window.location.href = "index.html";
      return;
    }
    const result = await response?.json().catch(() => ({}));
    if (!response || !response.ok) {
      showToast("公司创建失败", result?.message || "请稍后重试");
      return;
    }
    const accountCreated = Boolean(result.username);
    dialog.close();
    event.currentTarget.reset();
    await loadAdminCompanies();
    showToast(
      accountCreated ? "公司与账号已创建" : "公司已创建",
      accountCreated ? `账号 ${result.username} 的初始密码已生成（仅此一次显示）：${result.initial_password}，首次登录必须修改` : "可稍后在账号管理中创建公司账号",
    );
  });

  $("#systemSettings")?.addEventListener("submit", (event) => {
    event.preventDefault();
    showToast("系统计算口径已保存", "正式系统将记录修改前后值与操作人");
  });
  $("#runClosingCheck")?.addEventListener("click", () => {
    const unresolved = $$(".audit-table tbody tr").filter((row) => row.dataset.resolved !== "true" && !$(".status.success", row)).length;
    if (unresolved) {
      showToast("结账检查未通过", `仍有 ${unresolved} 项审核事项，已打开审核中心`);
      showView("audit");
    } else {
      $$("#closingPanel .is-blocked").forEach((item) => {
        item.classList.remove("is-blocked");
        $("use", item).setAttribute("href", "icons.svg#circle-check");
        $("small", item).textContent = "检查已通过";
      });
      $("#closingDescription").textContent = "2026 年 7 月 · 全部前置检查已通过";
      $("#closingStatus").className = "status success";
      $("#closingStatus").textContent = "可结账";
      $("#executeClosing").disabled = false;
      $("#executeClosing").removeAttribute("title");
      showToast("结账检查通过", "执行结账按钮已解锁");
    }
  });
  const closingDialog = $("#closingDialog");
  $("#executeClosing")?.addEventListener("click", () => closingDialog.showModal());
  $$('[data-close-closing]').forEach((button) => button.addEventListener("click", () => closingDialog.close()));
  $("#closingForm")?.addEventListener("submit", (event) => {
    event.preventDefault();
    closingDialog.close();
    $("#closingDescription").textContent = "2026 年 7 月 · 已完成集团结账";
    $("#closingStatus").className = "status success";
    $("#closingStatus").textContent = "已结账";
    $("#closingHistory").textContent = `${new Date().toLocaleString("zh-CN", { hour12: false })} · 系统管理员执行 2026 年 7 月结账 · 已写入审计记录`;
    $("#runClosingCheck").disabled = true;
    $("#executeClosing").disabled = true;
    $("#executeClosing").textContent = "7 月已结账";
    showToast("2026 年 7 月已完成结账", "本期结果已锁定，后续补录将进入重开流程");
  });
  const openingDialog = $("#openingDialog");
  $("#openOpeningDialog")?.addEventListener("click", () => openingDialog.showModal());
  $$('[data-close-opening]').forEach((button) => button.addEventListener("click", () => openingDialog.close()));
  $("#openingForm")?.addEventListener("submit", (event) => {
    event.preventDefault();
    const data = new FormData(event.currentTarget);
    if (data.get("from") === data.get("to")) {
      showToast("本方与对方不能相同", "同公司账户余额不属于公司间期初");
      return;
    }
    const row = document.createElement("tr");
    [data.get("from"), data.get("to"), data.get("subject"), data.get("direction")].forEach((value) => {
      const cell = document.createElement("td"); cell.textContent = value; row.append(cell);
    });
    const amount = document.createElement("td"); amount.className = "number"; amount.textContent = Number(data.get("amount")).toLocaleString("zh-CN", {minimumFractionDigits:2}); row.append(amount);
    const date = document.createElement("td"); date.textContent = data.get("effectiveDate"); row.append(date);
    const status = document.createElement("td"); status.innerHTML = '<span class="status warning">待复核</span>'; row.append(status);
    $("#openingRows").append(row);
    openingDialog.close();
    event.currentTarget.reset();
    showToast("期初余额已提交复核", "正式系统将保留录入依据与操作人");
  });
  $("#reminderForm")?.addEventListener("submit", (event) => {
    event.preventDefault();
    const data = new FormData(event.currentTarget);
    const article = document.createElement("article");
    article.innerHTML = '<span class="notification-icon warning"><svg><use href="icons.svg#bell"/></svg></span>';
    const content = document.createElement("span");
    const heading = document.createElement("strong");
    heading.textContent = `${data.get("company")} · ${data.get("message")}`;
    const meta = document.createElement("small");
    meta.textContent = `手动提醒 · 截止 ${data.get("dueDate")} · 刚刚`;
    content.append(heading, meta);
    const status = document.createElement("em");
    status.className = "status warning";
    status.textContent = "未读";
    article.append(content, status);
    $("#adminReminderList").prepend(article);
    event.currentTarget.reset();
    showToast("提醒已发送", "对方将在公司业务端收到站内通知");
  });
}

function visibleRows(table) {
  return $$('tbody tr', table).filter((row) => !row.hidden);
}

function filterFlows() {
  const table = $("#flowTable");
  if (!table) return;
  const company = $("#flowCompany")?.value || "全部公司";
  const bank = $("#flowBank")?.value || "全部银行";
  const account = $("#flowAccount")?.value || "全部账户";
  const startDate = $("#flowStart")?.value || "0000-01-01";
  const endDate = $("#flowEnd")?.value || "9999-12-31";
  const keyword = $("#flowKeyword")?.value.trim().toLowerCase() || "";
  if (startDate > endDate) {
    showToast("日期范围无效", "开始日期不能晚于结束日期");
    return;
  }
  let count = 0;
  $$("tbody tr", table).forEach((row) => {
    const rowDate = $("td", row).textContent.trim().replaceAll(".", "-");
    const matchesCompany = company === "全部公司" || row.dataset.company === company;
    const matchesBank = bank === "全部银行" || row.dataset.bank === bank;
    const matchesAccount = account === "全部账户" || row.textContent.includes(account);
    const matchesDate = rowDate >= startDate && rowDate <= endDate;
    const matchesKeyword = !keyword || row.textContent.toLowerCase().includes(keyword);
    row.hidden = !(matchesCompany && matchesBank && matchesAccount && matchesDate && matchesKeyword);
    if (!row.hidden) count += 1;
  });
  $("#flowCount").textContent = count;
  showToast("查询完成", `当前显示 ${count} 笔流水`);
}

function exportFlows() {
  const table = $("#flowTable");
  const rows = visibleRows(table);
  const headers = ["交易日期", "公司", "银行及账号", "收付方向", "对方户名及账号", "摘要", "银行流水号", "归集状态", "金额", "导入批次", "源行定位"];
  const records = rows.map((row, index) => {
    const cells = $$('td', row).map((cell) => cell.innerText.replace(/\n/g, " ").trim());
    return [cells[0], portal === "company" ? "A公司" : cells[1].split(" ")[0], portal === "company" ? cells[1] : cells[1], ...cells.slice(2), `IMP-DEMO-${String(index + 1).padStart(3, "0")}`, `Sheet1!R${index + 8}`];
  });
  const csv = [headers, ...records].map((record) => record.map((value) => `"${String(value ?? "").replace(/"/g, '""')}"`).join(",")).join("\r\n");
  const link = document.createElement("a");
  link.href = URL.createObjectURL(new Blob(["\ufeff", csv], { type: "text/csv;charset=utf-8" }));
  link.download = `${portal === "admin" ? "集团" : "A公司"}银行流水_202607.csv`;
  link.click();
  URL.revokeObjectURL(link.href);
  showToast("导出已生成", `共 ${rows.length} 笔，已保留银行标识与源行定位`);
}

function initFlowTools() {
  $("#applyFlowFilters")?.addEventListener("click", filterFlows);
  $("#exportFlows")?.addEventListener("click", exportFlows);
}

function resetUpload() {
  state.selectedFile = null;
  state.parseResult = null;
  $("#uploadForm")?.reset();
  if ($("#filePreview")) $("#filePreview").hidden = true;
  if ($("#parseResult")) $("#parseResult").hidden = true;
  if ($("#sheetReview")) $("#sheetReview").hidden = true;
  if ($("#sheetList")) $("#sheetList").replaceChildren();
  if ($("#dropzone")) $("#dropzone").hidden = false;
  if ($("#parseButton")) {
    $("#parseButton").disabled = true;
    $("#parseButton span").textContent = "开始解析";
    delete $("#parseButton").dataset.stage;
  }
}

function updateParseButton() {
  const button = $("#parseButton");
  if (button) button.disabled = !(state.selectedFile && $("#accountSelect").value);
}

function acceptFile(file) {
  if (!file) return;
  const extension = file.name.split(".").pop().toLowerCase();
  if (!["xls", "xlsx"].includes(extension)) {
    showToast("文件格式不支持", "请选择银行导出的 .xls 或 .xlsx 文件");
    return;
  }
  state.selectedFile = file;
  state.parseResult = null;
  $("#fileName").textContent = file.name;
  $("#fileMeta").textContent = `${(file.size / 1024).toFixed(1)} KB · 等待表头识别`;
  $("#filePreview").hidden = false;
  $("#dropzone").hidden = true;
  $("#parseResult").hidden = true;
  delete $("#parseButton").dataset.stage;
  updateParseButton();
}

async function parseFile() {
  const formData = new FormData();
  formData.append("file", state.selectedFile);
  const selectedAccount = $("#accountSelect")?.selectedOptions?.[0];
  if (selectedAccount?.dataset.accountId) {
    formData.append("bank_account_id", selectedAccount.dataset.accountId);
  }
  let result;
  let parsed = false;
  try {
    const response = await fetch("/api/parse", { method: "POST", body: formData });
    if (response.status === 401 || response.status === 403) {
      window.location.href = "index.html";
      return;
    }
    result = await response.json();
    parsed = response.ok && ["parsed", "duplicate"].includes(result.status);
  } catch {
    result = { status: "error", message: "解析服务暂时不可用，请稍后重试。" };
  }
  state.parseResult = result;
  renderParseResult(result, parsed);
}

function renderParseResult(result, parsed) {
  const panel = $("#parseResult");
  if (!panel) return;
  const sheets = Array.isArray(result.sheets) ? result.sheets : [];
  const duplicated = result.status === "duplicate";
  const opaque = duplicated && !sheets.length;
  panel.classList.toggle("is-exception", !parsed);
  $("use", panel).setAttribute("href", parsed ? "icons.svg#circle-check" : "icons.svg#circle-alert");
  $("#parseTitle").textContent = duplicated ? "文件已导入过" : parsed ? "文件解析完成" : "未识别到银行模板";
  const pendingCount = sheets.filter((s) => s.outcome === "parsed" && s.review_status === "pending").length;
  const exceptionCount = sheets.filter((s) => s.outcome === "exception").length;
  const ignoredCount = sheets.filter((s) => s.outcome === "ignored" || s.review_status === "ignored").length;
  let summary;
  if (opaque) {
    summary = "相同内容的文件已由其他公司导入，仅记录重复状态，不重复入账。";
  } else if (sheets.length) {
    summary = `${sheets.length} 个工作表：${pendingCount} 个待确认${exceptionCount ? `、${exceptionCount} 个异常` : ""}${ignoredCount ? `、${ignoredCount} 个忽略` : ""}。解析成功不等于业务确认。`;
  } else {
    summary = `${result.message || ""} 系统不会猜测模板或自动入账。`;
  }
  $("#parseSummary").textContent = summary;
  panel.hidden = false;
  renderSheetList(sheets, result.batch_id);

  const button = $("#parseButton");
  button.dataset.stage = "confirm";
  if (!parsed) {
    button.querySelector("span").textContent = "关闭";
  } else if (opaque) {
    button.querySelector("span").textContent = "完成";
  } else if (sheets.length) {
    button.querySelector("span").textContent = pendingCount ? `确认全部（${pendingCount} 个待确认）` : "完成";
  } else {
    button.querySelector("span").textContent = "完成";
  }
}

function sheetStatusMeta(sheet) {
  if (sheet.review_status === "confirmed") return { className: "success", label: "已确认" };
  if (sheet.review_status === "ignored") return { className: "neutral", label: "已忽略" };
  if (sheet.outcome === "exception") return { className: "danger", label: "异常待处理" };
  if (sheet.outcome === "ignored") return { className: "neutral", label: "空表忽略" };
  return { className: "warning", label: "待确认" };
}

function renderSheetList(sheets, batchId) {
  const wrap = $("#sheetReview");
  const list = $("#sheetList");
  if (!wrap || !list || !sheets.length) {
    if (wrap) wrap.hidden = true;
    return;
  }
  wrap.hidden = false;
  list.replaceChildren(...sheets.map((sheet) => buildSheetItem(sheet, batchId)));
}

function buildSheetItem(sheet, batchId) {
  const item = document.createElement("article");
  item.className = "sheet-item";
  if (sheet.review_status === "pending") item.classList.add("is-pending");
  const meta = sheetStatusMeta(sheet);
  const head = document.createElement("div");
  head.className = "sheet-item-head";
  const name = document.createElement("strong");
  name.textContent = sheet.sheet_name;
  const badge = document.createElement("em");
  badge.className = `status ${meta.className}`;
  badge.textContent = meta.label;
  head.append(name, badge);
  const details = document.createElement("p");
  details.className = "sheet-item-meta";
  if (sheet.outcome === "parsed" && sheet.bank) {
    const period = sheet.period_start ? ` · ${sheet.period_start}—${sheet.period_end}` : "";
    details.textContent = `${sheet.bank} · ${sheet.transactions} 条明细${period}`;
  } else if (sheet.message) {
    details.textContent = sheet.message;
  } else {
    details.textContent = "空工作表。";
  }
  if (sheet.review_reason) {
    details.textContent += ` · 原因：${sheet.review_reason}`;
  }
  const body = document.createElement("div");
  body.append(head, details);

  const actions = document.createElement("div");
  actions.className = "sheet-item-actions";
  if (sheet.review_status === "pending") {
    if (sheet.outcome === "parsed") {
      const confirmButton = document.createElement("button");
      confirmButton.type = "button";
      confirmButton.className = "text-button";
      confirmButton.textContent = "确认";
      confirmButton.addEventListener("click", () => sheetReviewAction(batchId, sheet.sheet_name, "confirm"));
      actions.append(confirmButton);
    }
    const ignoreButton = document.createElement("button");
    ignoreButton.type = "button";
    ignoreButton.className = "text-button";
    ignoreButton.textContent = "忽略";
    ignoreButton.addEventListener("click", () => sheetReviewAction(batchId, sheet.sheet_name, "ignore"));
    actions.append(ignoreButton);
  }
  item.append(body, actions);
  return item;
}

async function sheetReviewAction(batchId, sheetName, decision) {
  const payload = { sheets: [sheetName] };
  if (decision === "ignore") {
    const reason = (window.prompt("请填写忽略原因（必填）：", "") || "").trim();
    if (!reason) {
      showToast("忽略未提交", "必须填写忽略原因");
      return;
    }
    payload.reason = reason;
  }
  const response = await fetch(`/api/batches/${batchId}/${decision}`, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify(payload),
  }).catch(() => null);
  if (response?.status === 401 || response?.status === 403) {
    window.location.href = "index.html";
    return;
  }
  const result = await response?.json().catch(() => ({}));
  if (!response || !response.ok) {
    showToast("操作失败", result?.message || "请稍后重试");
    return;
  }
  showToast(decision === "confirm" ? "工作表已确认" : "工作表已忽略", `${sheetName}`);
  await refreshAfterSheetAction(result, batchId);
}

async function refreshAfterSheetAction(result, batchId) {
  if (Array.isArray(result.sheets)) renderSheetList(result.sheets, batchId);
  await loadImportBatches();
  const button = $("#parseButton");
  if (!button) return;
  const pending = (result.sheets || []).filter((s) => s.outcome === "parsed" && s.review_status === "pending").length;
  if (pending === 0 && (result.sheets || []).length) {
    button.querySelector("span").textContent = "完成";
    button.dataset.stage = "done";
  } else {
    button.querySelector("span").textContent = `确认全部（${pending} 个待确认）`;
  }
}

async function confirmImport() {
  const result = state.parseResult;
  const batchId = result?.batch_id;
  const sheets = Array.isArray(result?.sheets) ? result.sheets : [];
  const pending = sheets
    .filter((s) => s.outcome === "parsed" && s.review_status === "pending")
    .map((s) => s.sheet_name);
  if (!pending.length) {
    $("#uploadDialog").close();
    await loadImportBatches();
    showView("upload");
    return;
  }
  const button = $("#parseButton");
  button.disabled = true;
  button.querySelector("span").textContent = "正在确认...";
  const response = await fetch(`/api/batches/${batchId}/confirm`, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({ sheets: pending }),
  }).catch(() => null);
  if (response?.status === 401 || response?.status === 403) {
    window.location.href = "index.html";
    return;
  }
  const outcome = await response?.json().catch(() => ({}));
  if (!response || !response.ok) {
    button.disabled = false;
    button.querySelector("span").textContent = "确认失败，点击重试";
    showToast("确认失败", outcome?.message || "请稍后重试");
    return;
  }
  button.disabled = false;
  if (Array.isArray(outcome.sheets)) renderSheetList(outcome.sheets, batchId);
  await loadImportBatches();
  $("#uploadDialog").close();
  showView("upload");
  showToast("流水已确认", `${outcome.updated.length} 个工作表已确认；未确认的工作表不参与计算`);
}

function submitImportException() {
  $("#uploadDialog").close();
  showView("upload");
  showToast("解析异常未入账", `${state.selectedFile?.name || "该文件"} 不会进入匹配与计算，请核对模板后重新导出`);
}

function renderBatchRow(batch) {
  const row = document.createElement("tr");
  const idCell = document.createElement("td");
  const id = document.createElement("strong");
  id.textContent = `IMP-${String(batch.id).padStart(6, "0")}`;
  const file = document.createElement("small");
  file.textContent = batch.original_filename || "";
  idCell.append(id, file);

  const bank = document.createElement("td");
  bank.textContent = batch.bank_name || "—";

  const period = document.createElement("td");
  period.textContent = batch.period_start && batch.period_end
    ? `${batch.period_start}—${batch.period_end}`
    : "—";

  const count = document.createElement("td");
  count.className = "number";
  count.textContent = `${batch.confirmed_transactions ?? 0} 笔`;

  const coverage = document.createElement("td");
  const coverageStatus = batch.status === "exception"
    ? { className: "danger", label: "未导入" }
    : batch.pending_sheets > 0
      ? { className: "warning", label: `${batch.pending_sheets} 个待确认` }
      : batch.confirmed_sheets > 0
        ? { className: "success", label: "已确认" }
        : { className: "neutral", label: "待处理" };
  coverage.innerHTML = `<span class="status ${coverageStatus.className}">${coverageStatus.label}</span>`;

  const parseState = document.createElement("td");
  const statusParts = [];
  if (batch.exception_sheets > 0) statusParts.push(`${batch.exception_sheets} 个异常`);
  if (batch.ignored_sheets > 0) statusParts.push(`${batch.ignored_sheets} 个忽略`);
  parseState.textContent = statusParts.length ? statusParts.join("、") : "解析成功";

  const time = document.createElement("td");
  time.textContent = String(batch.created_at || "").slice(0, 16).replace("T", " ");

  row.append(idCell, bank, period, count, coverage, parseState, time);
  return row;
}

async function loadImportBatches() {
  const tbody = $("#importRows");
  if (!tbody) return;
  const response = await fetch("/api/batches").catch(() => null);
  if (response?.status === 401 || response?.status === 403) {
    window.location.href = "index.html";
    return;
  }
  const result = await response?.json().catch(() => ({}));
  const batches = Array.isArray(result?.batches) ? result.batches : [];
  if (batches.length) tbody.replaceChildren(...batches.map(renderBatchRow));
}

function initCompany() {
  loadCompanyManualRecords();
  loadCompanyAccounts();
  loadCompanyBalances();
  loadCompanyDirectoryOptions();
  loadImportBatches();
  const uploadDialog = $("#uploadDialog");
  $$('[data-open-upload]').forEach((button) => button.addEventListener("click", () => uploadDialog.showModal()));
  $$('[data-close-upload]').forEach((button) => button.addEventListener("click", () => uploadDialog.close()));
  uploadDialog?.addEventListener("close", resetUpload);
  $("#accountSelect")?.addEventListener("change", updateParseButton);
  $("#fileInput")?.addEventListener("change", (event) => acceptFile(event.target.files[0]));
  $("#removeFile")?.addEventListener("click", () => {
    state.selectedFile = null;
    $("#fileInput").value = "";
    $("#filePreview").hidden = true;
    $("#dropzone").hidden = false;
    $("#parseResult").hidden = true;
    updateParseButton();
  });
  const dropzone = $("#dropzone");
  if (dropzone) {
    ["dragenter", "dragover"].forEach((type) => dropzone.addEventListener(type, (event) => { event.preventDefault(); dropzone.classList.add("is-dragging"); }));
    ["dragleave", "drop"].forEach((type) => dropzone.addEventListener(type, (event) => { event.preventDefault(); dropzone.classList.remove("is-dragging"); }));
    dropzone.addEventListener("drop", (event) => acceptFile(event.dataTransfer.files[0]));
  }
  $("#uploadForm")?.addEventListener("submit", async (event) => {
    event.preventDefault();
    const stage = $("#parseButton").dataset.stage;
    if (stage === "confirm" || stage === "done") {
      const result = state.parseResult;
      const parsed = result && ["parsed", "duplicate"].includes(result.status);
      if (parsed && stage === "confirm") {
        await confirmImport();
      } else if (parsed) {
        $("#uploadDialog").close();
        showView("upload");
        await loadImportBatches();
      } else {
        submitImportException();
      }
      return;
    }
    $("#parseButton").disabled = true;
    $("#parseButton span").textContent = "正在识别表头...";
    await parseFile();
  });

  function finishReview(button, disposition) {
    const item = button.closest("article");
    const type = item.dataset.reviewType;
    const selectedMatch = $('input[name="matchCandidate"]:checked', item)?.value;
    const selectedSubject = $("select", item)?.value;
    const detail = type === "match" ? (selectedMatch || "转为匹配异常") : selectedSubject;
    const history = $("#reviewHistory");
    const record = document.createElement("p");
    record.textContent = `${new Date().toLocaleString("zh-CN", { hour12: false })} · 牛女士 · ${disposition} · ${detail}`;
    history.append(record);
    history.hidden = false;
    item.remove();
    if (type === "match") $("#matchPendingCount").textContent = "0 笔";
    else $("#subjectPendingCount").textContent = "0 笔";
    const remaining = $$("#reviewList > article").length;
    const badge = $('.nav-item[data-view="reconcile"] b');
    if (badge) badge.textContent = remaining;
    $(`.cashier-tasks [data-task-type="${type}"]`)?.remove();
    const workspaceRemaining = $$(".cashier-tasks > article").length;
    $("#workspacePendingStatus").textContent = `${workspaceRemaining} 项待处理`;
    const workspaceBadge = $('.nav-item[data-view="workspace"] b');
    if (workspaceBadge) workspaceBadge.textContent = workspaceRemaining;
    showToast("处理结果已记录", "待办状态、操作人、时间和依据已同步更新");
  }
  $$('[data-resolve]').forEach((button) => button.addEventListener("click", () => finishReview(button, "确认")));
  $$('[data-reject]').forEach((button) => button.addEventListener("click", () => finishReview(button, "转异常")));
  $("#markAllRead")?.addEventListener("click", () => {
    $$("#companyNotifications .is-unread").forEach((item) => {
      item.classList.remove("is-unread");
      const status = $(".status", item);
      status.className = "status neutral";
      status.textContent = "已读";
    });
    showToast("通知已全部标为已读");
  });

  $("#manualEntryForm")?.addEventListener("submit", (event) => {
    event.preventDefault();
    const form = event.currentTarget;
    const data = new FormData(form);
    const evidence = data.get("evidence");
    if (evidence instanceof File && evidence.size > 20 * 1024 * 1024) {
      showToast("证明附件超过限制", "请选择不超过 20 MB 的文件");
      return;
    }
    submitCompanyManualRecord(form);
  });

  const accountDialog = $("#accountDialog");
  $("#openAccountDialog")?.addEventListener("click", () => accountDialog.showModal());
  $$('[data-close-account]').forEach((button) => button.addEventListener("click", () => accountDialog.close()));
  $("#accountForm")?.addEventListener("submit", async (event) => {
    event.preventDefault();
    const data = new FormData(event.currentTarget);
    // The server binds the account to the session company and normalizes the
    // number; duplicates come back as 409.
    const response = await fetch("/api/company/accounts", {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({
        bank_name: String(data.get("bank") || "").trim(),
        account_type: String(data.get("type") || ""),
        account_number: String(data.get("accountNumber") || ""),
        start_date: String(data.get("startDate") || ""),
      }),
    }).catch(() => null);
    if (response?.status === 401 || response?.status === 403) {
      window.location.href = "index.html";
      return;
    }
    const result = await response?.json().catch(() => ({}));
    if (!response || !response.ok) {
      showToast("账户登记失败", result?.message || "请稍后重试");
      return;
    }
    accountDialog.close();
    event.currentTarget.reset();
    await loadCompanyAccounts();
    showToast("银行账户已提交登记", "复核通过前不能上传流水，也不参与账户识别和覆盖计算");
  });
}

if (typeof document !== "undefined" && document.body) {
  if (portal === "entry") {
    initEntry();
  } else {
    initAuthGuard().then((allowed) => {
      if (!allowed) return;
      initShell();
      initFlowTools();
      if (portal === "admin") {
        initAdmin();
      } else {
        initCompany();
      }
    });
  }
}

if (typeof module !== "undefined" && module.exports) {
  module.exports = {
    fmtAbsMoney,
    fmtMoney,
    eventIsNegative,
    cycleTab,
    drawerEscAction,
    amountWithCurrency,
    resultDirection,
    accountCell,
  };
}