(function (root, factory) {
  // 世系模块同时支持浏览器页面和 Node 单元测试。
  if (typeof module === 'object' && module.exports) {
    module.exports = factory(root);
    return;
  }

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

  var documentRef = root.document;
  var selectedPersonId = '';

  function normalizeList(data) {
    // 通用列表响应可能是数组，也可能包在 rows、records、list、data 中。
    if (Array.isArray(data)) return data;
    if (!data || typeof data !== 'object') return [];
    if (Array.isArray(data.rows)) return data.rows;
    if (Array.isArray(data.records)) return data.records;
    if (Array.isArray(data.list)) return data.list;
    if (Array.isArray(data.data)) return data.data;
    return [];
  }

  function pick(item, keys, fallback) {
    var source = item || {};
    var index;
    var value;

    for (index = 0; index < keys.length; index += 1) {
      value = source[keys[index]];
      if (value !== undefined && value !== null && value !== '') return value;
    }

    return fallback || '';
  }

  function escapeHtml(value) {
    // 世系人物信息进入 innerHTML 前统一转义，避免姓名和简介污染页面结构。
    return String(value === undefined || value === null ? '' : value)
      .replace(/&/g, '&amp;')
      .replace(/</g, '&lt;')
      .replace(/>/g, '&gt;')
      .replace(/"/g, '&quot;')
      .replace(/'/g, '&#39;');
  }

  function getApi() {
    return root.GenealogyApi && root.GenealogyApi.defaultClient;
  }

  function query(selector, rootNode) {
    return (rootNode || documentRef).querySelector(selector);
  }

  function queryAll(selector, rootNode) {
    return Array.prototype.slice.call((rootNode || documentRef).querySelectorAll(selector));
  }

  function showMessage(message) {
    if (root.layui && root.layui.layer) {
      root.layui.layer.msg(message);
      return;
    }

    root.alert(message);
  }

  function getQueryParam(search, name) {
    var params = new URLSearchParams(String(search || '').replace(/^\?/, ''));
    return params.get(name) || '';
  }

  function getCurrentGenealogyId() {
    var search = root.location && root.location.search;
    var page = query('[data-lineage-page], [data-family-home-page]');

    return getQueryParam(search, 'id') ||
      getQueryParam(search, 'genealogyId') ||
      (page && page.getAttribute('data-genealogy-id')) ||
      '';
  }

  function toNumber(value) {
    var text = String(value === undefined || value === null ? '' : value).trim();
    var number = Number(text);

    return text && Number.isFinite(number) ? number : undefined;
  }

  function trimOrUndefined(value) {
    var text = String(value === undefined || value === null ? '' : value).trim();

    return text || undefined;
  }

  function formatSex(value) {
    var text = String(value === undefined || value === null ? '' : value);

    if (text === '0' || text === '男') return '男';
    if (text === '1' || text === '女') return '女';
    return '未知';
  }

  function getPersonId(item) {
    return pick(item, ['personId', 'lineagePersonId', 'id'], '');
  }

  function buildLineagePersonBody(values) {
    // LineagePersonBody 来自 APP.openapi.json，空值统一转为 undefined，避免提交无意义空字符串。
    var source = values || {};

    return {
      appUserId: toNumber(source.appUserId),
      personNo: trimOrUndefined(source.personNo),
      personName: String(source.personName || '').trim(),
      aliasName: trimOrUndefined(source.aliasName),
      sex: String(source.sex || '').trim() || '0',
      generationNo: toNumber(source.generationNo),
      generationName: trimOrUndefined(source.generationName),
      avatarOssId: toNumber(source.avatarOssId),
      birthDate: trimOrUndefined(source.birthDate),
      deathDate: trimOrUndefined(source.deathDate),
      introduction: trimOrUndefined(source.introduction)
    };
  }

  function buildPersonRow(item) {
    var personId = getPersonId(item);
    var name = pick(item, ['personName', 'name', 'realName'], '未命名成员');
    var generationNo = pick(item, ['generationNo', 'generation', 'generationIndex'], '-');
    var generationName = pick(item, ['generationName', 'generationText'], '未设置');
    var sex = formatSex(pick(item, ['sex', 'gender'], ''));
    var bound = pick(item, ['boundAccount', 'bindAccount', 'hasAccount', 'appUserId'], '') ? '已绑定账号' : '未绑定账号';

    return '<button class="module-row lineage-row" type="button" data-lineage-person="' + escapeHtml(personId) + '">' +
      '<div><h3>' + escapeHtml(name) + '</h3><p>第 ' + escapeHtml(generationNo) + ' 世 · ' + escapeHtml(generationName) + '字辈 · ' + escapeHtml(sex) + ' · ' + escapeHtml(bound) + '</p></div>' +
      '<span class="pill">查看资料</span>' +
      '</button>';
  }

  function getChildren(item) {
    var source = item || {};

    return normalizeList(source.children || source.childList || source.descendants);
  }

  function buildTreeNode(item) {
    var personId = getPersonId(item);
    var name = pick(item, ['personName', 'name', 'realName'], '未命名成员');
    var generationNo = pick(item, ['generationNo', 'generation', 'generationIndex'], '-');
    var children = getChildren(item);
    var html = '<li><button type="button" class="lineage-node" data-lineage-person="' + escapeHtml(personId) + '">' +
      '<strong>' + escapeHtml(name) + '</strong><span>第 ' + escapeHtml(generationNo) + ' 世</span></button>';

    if (children.length) {
      html += '<ul>' + children.map(buildTreeNode).join('') + '</ul>';
    }

    return html + '</li>';
  }

  function buildHomeSummary(detail, rootCount) {
    // 家谱主页摘要优先展示后端家谱信息，世系根节点数量来自树接口。
    var source = detail || {};
    var genealogyNo = pick(source, ['genealogyNo', 'genealogyCode', 'code'], '未设置编号');
    var hallName = pick(source, ['hallName', 'ancestralHall', 'tanghao'], '未设置');
    var memberCount = pick(source, ['memberCount', 'personCount', 'members'], '0');

    return genealogyNo + ' · 堂号 ' + hallName + ' · 共 ' + memberCount + ' 人 · ' + rootCount + ' 个世系根节点';
  }

  function renderTree(items) {
    var container = query('[data-lineage-tree], [data-lineage-home-tree]');
    var list = normalizeList(items);

    if (!container) return;
    if (!list.length) {
      container.innerHTML = '<div class="api-empty">暂无世系树数据</div>';
      return;
    }

    container.innerHTML = '<ul class="lineage-tree">' + list.map(buildTreeNode).join('') + '</ul>';
  }

  function renderPersons(items) {
    var container = query('[data-lineage-list]');
    var list = normalizeList(items);

    if (!container) return;
    if (!list.length) {
      container.innerHTML = '<div class="api-empty">暂无世系人物</div>';
      return;
    }

    container.innerHTML = list.map(buildPersonRow).join('');
  }

  function renderHomeDetail(detail, rootCount) {
    var title = query('[data-family-home-title]');
    var summary = query('[data-family-home-summary]');
    var source = detail || {};

    if (title) title.textContent = pick(source, ['genealogyName', 'name'], title.textContent || '家谱主页');
    if (summary) summary.textContent = buildHomeSummary(source, rootCount);
  }

  function renderDetail(item) {
    var container = query('[data-lineage-detail]');
    var source = item || {};
    var name = pick(source, ['personName', 'name', 'realName'], '未命名成员');
    var intro = pick(source, ['introduction', 'intro', 'remark'], '暂无简介');

    if (!container) return;
    container.innerHTML = '<div class="form-like">' +
      '<p><span>姓名</span><b>' + escapeHtml(name) + '</b><em>' + escapeHtml(formatSex(pick(source, ['sex', 'gender'], ''))) + '</em></p>' +
      '<p><span>字辈</span><b>' + escapeHtml(pick(source, ['generationName', 'generationText'], '未设置')) + '</b><em>第 ' + escapeHtml(pick(source, ['generationNo', 'generation'], '-')) + ' 世</em></p>' +
      '<p><span>生卒</span><b>' + escapeHtml(pick(source, ['birthDate'], '未填写')) + '</b><em>' + escapeHtml(pick(source, ['deathDate'], '健在或未填')) + '</em></p>' +
      '<p><span>简介</span><b>' + escapeHtml(intro) + '</b><em>世系资料</em></p>' +
      '</div>';
  }

  function getFormValues(form) {
    var values = {};

    queryAll('[name]', form).forEach(function (field) {
      values[field.name] = field.value;
    });

    return values;
  }

  async function loadLineage() {
    var api = getApi();
    var genealogyId = getCurrentGenealogyId();
    var keyword = query('[data-lineage-keyword]');
    var homeSummary = query('[data-family-home-summary]');
    var treeData;
    var treeList;
    var queryData = {
      pageNum: 1,
      pageSize: 50
    };

    if (!api) return;
    if (!genealogyId) {
      renderTree([]);
      renderPersons([]);
      showMessage('请从具体家谱进入世系图');
      return;
    }

    if (keyword && keyword.value.trim()) queryData.keyword = keyword.value.trim();

    try {
      treeData = await api.lineageTree(genealogyId);
      treeList = normalizeList(treeData);
      renderTree(treeData);

      if (homeSummary && api.genealogyDetail) {
        renderHomeDetail(await api.genealogyDetail(genealogyId), treeList.length);
      }

      if (query('[data-lineage-list]')) {
        renderPersons(await api.lineagePersonsPage(genealogyId, queryData));
      }
    } catch (error) {
      showMessage(error.message || '世系数据加载失败');
    }
  }

  async function loadPersonDetail(personId) {
    var api = getApi();
    var genealogyId = getCurrentGenealogyId();

    if (!api || !genealogyId || !personId) return;

    selectedPersonId = personId;
    queryAll('[data-lineage-person]').forEach(function (item) {
      item.classList.toggle('is-selected', item.getAttribute('data-lineage-person') === String(personId));
    });

    try {
      renderDetail(await api.lineagePersonDetail(genealogyId, personId));
    } catch (error) {
      showMessage(error.message || '人物详情加载失败');
    }
  }

  async function submitPerson(form) {
    var api = getApi();
    var genealogyId = getCurrentGenealogyId();
    var body = buildLineagePersonBody(getFormValues(form));

    if (!api || !genealogyId) {
      showMessage('请从具体家谱进入世系图');
      return;
    }

    if (!body.personName) {
      showMessage('请填写成员姓名');
      return;
    }

    try {
      await api.createLineagePerson(genealogyId, body);
      form.reset();
      showMessage('世系人物已新增');
      loadLineage();
    } catch (error) {
      showMessage(error.message || '新增世系人物失败');
    }
  }

  async function createRelation(relationType) {
    var api = getApi();
    var genealogyId = getCurrentGenealogyId();
    var relationNames = {
      parents: '父母',
      spouses: '配偶',
      children: '子女',
      siblings: '兄弟姐妹'
    };
    var personName;

    if (!api || !genealogyId || !selectedPersonId) {
      showMessage('请先在成员列表中选择一个成员');
      return;
    }

    personName = root.prompt('请输入要添加的' + (relationNames[relationType] || '亲属') + '姓名', '');
    if (!personName) return;

    try {
      await api.addLineageRelation(genealogyId, selectedPersonId, relationType, buildLineagePersonBody({
        personName: personName
      }));
      showMessage('亲属关系已新增');
      loadLineage();
    } catch (error) {
      showMessage(error.message || '新增亲属关系失败');
    }
  }

  function bindActions() {
    if (!documentRef) return;

    documentRef.addEventListener('submit', function (event) {
      var form = event.target.closest('[data-lineage-form]');

      if (!form) return;
      event.preventDefault();
      submitPerson(form);
    });

    documentRef.addEventListener('click', function (event) {
      var personButton = event.target.closest('[data-lineage-person]');
      var searchButton = event.target.closest('[data-lineage-search]');
      var relationButton = event.target.closest('[data-lineage-relation]');

      if (personButton) {
        event.preventDefault();
        loadPersonDetail(personButton.getAttribute('data-lineage-person'));
      }

      if (searchButton) {
        event.preventDefault();
        loadLineage();
      }

      if (relationButton) {
        event.preventDefault();
        createRelation(relationButton.getAttribute('data-lineage-relation'));
      }
    });
  }

  function init() {
    if (!documentRef) return;

    bindActions();
    loadLineage();
  }

  return {
    normalizeList: normalizeList,
    buildLineagePersonBody: buildLineagePersonBody,
    formatSex: formatSex,
    buildPersonRow: buildPersonRow,
    buildTreeNode: buildTreeNode,
    buildHomeSummary: buildHomeSummary,
    init: init
  };
});