(function (root, factory) {
  if (typeof module === 'object' && module.exports) {
    module.exports = factory(root);
    return;
  }

  root.FamilyHomePages = factory(root);
  if (root.document) {
    root.document.addEventListener('DOMContentLoaded', function () {
      root.FamilyHomePages.init();
    });
  }
})(typeof globalThis !== 'undefined' ? globalThis : window, function (root) {
  'use strict';

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

  function normalizeId(value) {
    var result;

    if (typeof value === 'number' && !Number.isSafeInteger(value)) return '';
    if (value === undefined || value === null) return '';
    result = String(value).trim();
    return /^[1-9][0-9]*$/.test(result) ? result : '';
  }

  function text(value) {
    if (value === undefined || value === null) return '';
    return String(value).trim();
  }

  function normalizeCount(value) {
    var result = Number(value);

    return Number.isSafeInteger(result) && result >= 0 ? result : null;
  }

  function normalizeFamilyOverview(item, expectedGenealogyId) {
    var source = item || {};
    var genealogyId = normalizeId(source.genealogyId);
    var expectedId = normalizeId(expectedGenealogyId);
    var memberCount = normalizeCount(source.memberCount);
    var personCount = normalizeCount(source.personCount);

    if (!genealogyId || genealogyId !== expectedId ||
        !text(source.genealogyName) || String(source.status) !== '0' ||
        memberCount === null || personCount === null) {
      return null;
    }
    return {
      genealogyId: genealogyId,
      genealogyNo: text(source.genealogyNo),
      genealogyName: text(source.genealogyName),
      surname: text(source.surname),
      ancestralHall: text(source.ancestralHall),
      originPlace: text(source.originPlace),
      regionFullName: text(source.regionFullName),
      memberCount: memberCount,
      personCount: personCount,
      canManage: source.canManage === true,
      canEditContent: source.canEditContent === true
    };
  }

  function renderFamilyOverview(overview) {
    var source = overview || {};
    var details = [
      source.genealogyNo ? '家谱编号 ' + source.genealogyNo : '',
      source.surname ? '姓氏 ' + source.surname : '',
      source.ancestralHall ? '堂号 ' + source.ancestralHall : '',
      source.originPlace ? '祖籍 ' + source.originPlace : '',
      source.regionFullName ? '地区 ' + source.regionFullName : ''
    ].filter(Boolean).join(' · ');

    return '<h3>' + escapeHtml(source.genealogyName) + '</h3><p>' +
      escapeHtml(details) + '</p><p>成员 ' + escapeHtml(source.memberCount) +
      ' 人 · 世系人物 ' + escapeHtml(source.personCount) + ' 人</p>';
  }

  function shouldShowFamilyManagement(overview) {
    return !!overview && overview.canManage === true;
  }

  function shouldRedirectToLogin(api, error) {
    var status = error && (error.status || error.code);

    return !api || !api.getToken || !api.getToken() || Number(status) === 401;
  }

  async function loadFamilyHome(api, genealogyId) {
    var normalizedId = normalizeId(genealogyId);
    var results;
    var overview;

    if (!normalizedId || !api || !api.genealogyOverview || !api.lineageTree) {
      throw new Error('家谱主页接口初始化失败');
    }
    results = await Promise.all([
      api.genealogyOverview(normalizedId),
      api.lineageTree(normalizedId)
    ]);
    overview = normalizeFamilyOverview(results[0], normalizedId);
    if (!overview) throw new Error('家谱概览响应无效');
    return {
      overview: overview,
      tree: results[1]
    };
  }

  function redirectToLogin(api) {
    if (api && api.clearToken) api.clearToken();
    if (!root.location) return;
    if (typeof root.location.replace === 'function') root.location.replace('login.html');
    else root.location.href = 'login.html';
  }

  function query(selector) {
    return root.document && root.document.querySelector(selector);
  }

  function queryAll(selector) {
    return root.document ? Array.prototype.slice.call(root.document.querySelectorAll(selector)) : [];
  }

  function setText(selector, value) {
    var element = query(selector);

    if (element) element.textContent = value;
  }

  async function initFamilyHomePage() {
    var page = query('[data-family-home-page]');
    var api = root.GenealogyApi && root.GenealogyApi.defaultClient;
    var genealogyId;
    var result;

    if (!page) return;
    if (shouldRedirectToLogin(api)) {
      redirectToLogin(api);
      return;
    }
    genealogyId = root.ProfileUI && root.ProfileUI.getGenealogyId();
    if (!genealogyId) {
      if (root.location && typeof root.location.replace === 'function') {
        root.location.replace('profile-families.html?next=profile-family-home.html');
      }
      return;
    }
    if (root.ProfileUI && root.ProfileUI.syncGenealogyContextLinks) {
      root.ProfileUI.syncGenealogyContextLinks();
    }
    if (!root.LineagePages || !root.LineagePages.renderLineageTreeHtml) {
      setText('[data-family-home-status]', '世系预览初始化失败，请刷新后重试');
      return;
    }

    try {
      result = await loadFamilyHome(api, genealogyId);
      if (root.ProfileUI && root.ProfileUI.setCurrentGenealogyContext) {
        root.ProfileUI.setCurrentGenealogyContext(result.overview.genealogyId, result.overview.genealogyName);
      }
      setText('[data-family-home-title]', result.overview.genealogyName);
      setText('[data-family-home-context]', result.overview.genealogyName);
      query('[data-family-home-overview]').innerHTML = renderFamilyOverview(result.overview);
      setText('[data-family-home-member-count]', String(result.overview.memberCount));
      setText('[data-family-home-person-count]', String(result.overview.personCount));
      queryAll('[data-family-home-management]').forEach(function (element) {
        element.hidden = !shouldShowFamilyManagement(result.overview);
      });
      query('[data-lineage-home-tree]').innerHTML =
        root.LineagePages.renderLineageTreeHtml(result.tree);
      setText('[data-family-home-status]', '家谱概览已更新');
    } catch (error) {
      if (shouldRedirectToLogin(api, error)) {
        redirectToLogin(api);
        return;
      }
      query('[data-family-home-overview]').innerHTML =
        '<div class="api-empty">家谱概览读取失败，请稍后重试</div>';
      query('[data-lineage-home-tree]').innerHTML =
        '<div class="api-empty">世系树读取失败，请稍后重试</div>';
      setText('[data-family-home-status]', error.message || '家谱主页读取失败，请稍后重试');
    }
  }

  function init() {
    return initFamilyHomePage();
  }

  return {
    normalizeFamilyOverview: normalizeFamilyOverview,
    renderFamilyOverview: renderFamilyOverview,
    shouldShowFamilyManagement: shouldShowFamilyManagement,
    shouldRedirectToLogin: shouldRedirectToLogin,
    loadFamilyHome: loadFamilyHome,
    initFamilyHomePage: initFamilyHomePage,
    init: init
  };
});