import {
  clearAuthSession,
  getAuthContext,
  startAuthSync,
  switchAccount,
} from '/static/portal/common/auth.js?v=20260913';
import { escapeHtml } from '/static/portal/common/formatters.js';
import { mountCustomerServiceWidget } from '/static/portal/common/customer-service-widget/widget.js';

const PUBLIC_LINKS = [
  ['home', '首页', '/portal/guest/home/'],
  ['products', '基金产品', '/portal/guest/products/'],
  ['ranking', '基金排行', '/portal/guest/products/?view=ranking'],
];

const CUSTOMER_LINKS = [
  ['dashboard', '资产总览', '/portal/customer/dashboard/'],
  ['holdings', '我的持仓', '/portal/customer/holdings/'],
  ['profit-loss', '收益明细', '/portal/customer/profit-loss/'],
  ['orders', '交易记录', '/portal/customer/orders/'],
  ['transactions', '成交明细', '/portal/customer/transactions/'],
  ['risk-questionnaire', '风险测评', '/portal/customer/risk-questionnaire/'],
];

const RISK_LINKS = [
  ['risk-dashboard', '风险工作台', '/portal/employee-risk/dashboard/'],
];

const ADVISOR_LINKS = [
  ['advisor-dashboard', '投顾工作台', '/portal/employee-advisor/dashboard/'],
  ['public-products', '公开产品', '/portal/guest/products/'],
];

const OPERATOR_LINKS = [
  ['operator-dashboard', '运营工作台', '/portal/employee-operations/dashboard/'],
  ['operator-offsite', '场外申赎', '/portal/employee-operations/offsite/'],
  ['operator-promotion', '推介材料', '/portal/employee-operations/promotion/'],
  ['operator-nl2sql', 'NL2SQL', '/portal/employee-operations/nl2sql/'],
  ['public-products', '公开产品', '/portal/guest/products/'],
];

const ADMIN_LINKS = [
  ['admin-workspace', '平台治理', '/portal/employee-console/workspace/'],
  ['risk-dashboard', '风控中心', '/portal/employee-risk/dashboard/'],
];

const ROLE_LABELS = Object.freeze({
  customer: '客户账户',
  risk_operator: '风控人员',
  operator: '运营人员',
  advisor: '投顾人员',
  admin: '管理员',
  super_admin: '超级管理员',
});

function accountActions(context) {
  const username = escapeHtml(context.username || '已登录用户');
  const role = context.roles.map((item) => ROLE_LABELS[item]).find(Boolean) || '已认证账户';
  return `<div class="account-menu" data-account-menu><button class="account-menu__trigger" type="button" aria-haspopup="menu" aria-expanded="false" data-account-toggle><span class="account-menu__identity"><strong>${username}</strong><span>${escapeHtml(role)}</span></span><span class="account-menu__indicator" aria-hidden="true">⌄</span></button><div class="account-menu__popover" role="menu" data-account-popover><button class="account-menu__action" type="button" role="menuitem" data-switch-account>切换账号</button><button class="account-menu__action account-menu__action--danger" type="button" role="menuitem" data-logout>退出登录</button></div></div>`;
}

function headerMarkup(links, active, context, mode) {
  const nav = links.map(([key, label, href]) => `<a class="site-header__link${key === active ? ' site-header__link--active' : ''}" href="${href}"${key === active ? ' aria-current="page"' : ''}>${label}</a>`).join('');
  const actions = context
    ? accountActions(context)
    : '<a class="button button--quiet" href="/portal/employee-console/login/">员工入口</a><a class="button button--primary" href="/portal/customer/login/">登录</a>';
  const menuButton = mode === 'customer' ? '' : '<button class="site-header__menu-button" type="button" aria-label="展开导航" aria-expanded="false" data-menu>菜单</button>';
  return `<a class="skip-link" href="#main-content">跳到主要内容</a><header class="site-header"><div class="site-header__inner"><a class="site-header__brand" href="/portal/guest/home/"><img class="site-header__mark" src="/static/portal/common/layout/brandmark.svg" alt=""><span class="site-header__brand-copy"><strong class="site-header__brand-name">南方财富</strong><span class="site-header__brand-subtitle">模拟基金服务</span></span></a>${menuButton}<nav class="site-header__nav" aria-label="主导航" data-nav>${nav}</nav><div class="site-header__actions">${actions}</div></div></header>`;
}

function footerMarkup() {
  return '<footer class="site-footer"><div class="site-footer__inner"><span>基金投资需谨慎。本系统仅提供场内基金模拟交易，不构成投资建议。</span><span>数据截至页面标注时间</span></div></footer><div class="network-status" role="status" data-network-status></div><div class="trace-watermark" data-trace-watermark></div>';
}

export function mountShell({ active, mode = 'public' }) {
  // ⚠️ 幂等保护：同一个页面被挂两次 shell，就会看到**两份一模一样的顶部导航与页脚**。
  //
  // 已知的触发方式只有一种：HTML 里引了两条入口 <script type="module">，且 `?v=` 不同。
  // 浏览器按**完整 URL** 去重，两条会被当成两个模块、**各执行一次** ——
  // 2026-09-14 的 `employee-console/workspace/index.html` 正是如此
  // （合并时把两个分支各自改的版本号都保留下来，成了两行）。
  //
  // 那次已经把那两行收敛成一行；这里再挡一道，理由是这个错误**从症状上很难联想到原因**
  // （页面看起来只是"多了一块"），而且以后别人加缓存版本号时很容易再犯一次。
  if (document.querySelector('.site-header')) return;

  startAuthSync();
  document.body.classList.add(`portal-${mode}`);
  const context = getAuthContext();
  const links = mode === 'customer'
    ? CUSTOMER_LINKS
    : mode === 'risk'
      ? RISK_LINKS
      : mode === 'advisor'
        ? ADVISOR_LINKS
        : mode === 'operator'
          ? OPERATOR_LINKS
      : mode === 'admin'
        ? ADMIN_LINKS
        : PUBLIC_LINKS;
  document.body.insertAdjacentHTML('afterbegin', headerMarkup(links, active, context, mode));
  document.body.insertAdjacentHTML('beforeend', footerMarkup());
  const menu = document.querySelector('[data-menu]');
  const nav = document.querySelector('[data-nav]');
  menu?.addEventListener('click', () => {
    const open = nav.classList.toggle('site-header__nav--open');
    menu.setAttribute('aria-expanded', String(open));
  });
  const accountMenu = document.querySelector('[data-account-menu]');
  const accountToggle = document.querySelector('[data-account-toggle]');
  const accountPopover = document.querySelector('[data-account-popover]');
  const closeAccountMenu = () => {
    accountMenu?.classList.remove('account-menu--open');
    accountToggle?.setAttribute('aria-expanded', 'false');
  };
  accountToggle?.addEventListener('click', () => {
    const open = accountMenu.classList.toggle('account-menu--open');
    accountToggle.setAttribute('aria-expanded', String(open));
    if (open) accountPopover?.querySelector('[role="menuitem"]')?.focus();
  });
  document.addEventListener('click', (event) => {
    if (accountMenu && !accountMenu.contains(event.target)) closeAccountMenu();
  });
  document.addEventListener('keydown', (event) => {
    if (event.key === 'Escape') {
      closeAccountMenu();
      accountToggle?.focus();
    }
  });
  document.querySelector('[data-switch-account]')?.addEventListener('click', () => {
    switchAccount(mode === 'customer' ? 'customer' : 'staff');
  });
  document.querySelector('[data-logout]')?.addEventListener('click', () => {
    clearAuthSession();
    window.location.assign('/portal/guest/home/?reason=signed-out');
  });
  const networkStatus = document.querySelector('[data-network-status]');
  let networkStatusTimer = 0;
  const hideNetworkStatus = () => {
    window.clearTimeout(networkStatusTimer);
    networkStatus.classList.remove('network-status--visible');
  };
  const showNetworkStatus = (message, duration = 3600) => {
    window.clearTimeout(networkStatusTimer);
    networkStatus.textContent = message;
    networkStatus.classList.add('network-status--visible');
    if (duration > 0) networkStatusTimer = window.setTimeout(hideNetworkStatus, duration);
  };
  window.addEventListener('offline', () => {
    showNetworkStatus('网络已断开', 0);
  });
  window.addEventListener('online', () => {
    showNetworkStatus('网络已恢复，请点击刷新', 3000);
  });
  window.addEventListener('portal:error', (event) => {
    const detail = event.detail || {};
    showNetworkStatus(detail.message || '请求未完成');
  });
  window.addEventListener('portal:auth-expired', () => {
    networkStatus.textContent = '登录已过期，请重新登录';
    networkStatus.classList.add('network-status--visible');
  });
  if (new URLSearchParams(window.location.search).get('reason') === 'signed-out') {
    networkStatus.textContent = '您已安全退出登录';
    networkStatus.classList.add('network-status--visible');
    window.setTimeout(() => networkStatus.classList.remove('network-status--visible'), 3200);
    window.history.replaceState({}, '', window.location.pathname);
  }
  const observer = new MutationObserver(() => {
    const traceId = document.documentElement.dataset.traceId || '';
    const watermark = document.querySelector('[data-trace-watermark]');
    if (watermark) watermark.textContent = traceId ? `追踪标识 ${traceId}` : '';
  });
  observer.observe(document.documentElement, { attributes: true, attributeFilter: ['data-trace-id'] });
  const isCustomerContext = context?.roles?.includes('customer');
  const canUseCustomerService = mode === 'customer' || mode === 'public' && (!context || isCustomerContext);
  if (canUseCustomerService) {
    const style = document.createElement('link');
    style.rel = 'stylesheet'; style.href = '/static/portal/common/customer-service-widget/widget.css?v=20260913';
    document.head.appendChild(style);
    mountCustomerServiceWidget(isCustomerContext ? 'customer' : mode);
  }
}