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

  var documentRef = root.document;

  function normalizeList(data) {
    // 备忘录列表兼容数组、rows、records、list、data。
    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) {
    // 备忘标题和内容进入 innerHTML 前统一转义。
    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-memo-page], [data-memo-edit-page]');

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

  function getCurrentMemoId() {
    var search = root.location && root.location.search;

    return getQueryParam(search, 'memoId') || '';
  }

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

    return text || undefined;
  }

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

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

  function formatCompleted(value) {
    return String(value || '0') === '1' ? '已完成' : '未完成';
  }

  function buildMemoBody(values) {
    var source = values || {};

    return {
      memoTitle: String(source.memoTitle || '').trim(),
      memoContent: trimOrUndefined(source.memoContent),
      remindTime: trimOrUndefined(source.remindTime),
      completed: String(source.completed || '').trim() || '0',
      mediaOssIds: trimOrUndefined(source.mediaOssIds),
      sortOrder: toNumber(source.sortOrder, 1),
      status: String(source.status || '').trim() || '0'
    };
  }

  function getMemoId(item) {
    return pick(item, ['memoId', 'id'], '');
  }

  function buildMemoRow(item, genealogyId) {
    var memoId = getMemoId(item);
    var title = pick(item, ['memoTitle', 'title'], '未命名备忘');
    var completed = formatCompleted(pick(item, ['completed'], '0'));
    var remindTime = pick(item, ['remindTime', 'createTime'], '未设置提醒');

    return '<a class="module-row memo-row" href="profile-memo-edit.html?memoId=' + encodeURIComponent(memoId) + '&genealogyId=' + encodeURIComponent(genealogyId || '') + '">' +
      '<div><h3>' + escapeHtml(title) + '</h3><p>' + escapeHtml(completed) + ' · ' + escapeHtml(remindTime) + '</p></div>' +
      '<span class="pill">编辑</span></a>';
  }

  function renderMemos(items, genealogyId) {
    var container = query('[data-memo-list]');
    var list = normalizeList(items);

    if (!container) return;
    if (!list.length) {
      container.innerHTML = '<div class="api-empty">暂无备忘录</div>';
      return;
    }

    container.innerHTML = list.map(function (item) {
      return buildMemoRow(item, genealogyId);
    }).join('');
  }

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

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

    return values;
  }

  function fillMemoForm(memo) {
    var source = memo || {};

    queryAll('[name]').forEach(function (field) {
      var value = pick(source, [field.name], '');
      if (value !== '') field.value = value;
    });
  }

  async function loadMemos() {
    var api = getApi();
    var genealogyId = getCurrentGenealogyId();
    var memoId = getCurrentMemoId();

    if (!api || !genealogyId) return;

    try {
      if (query('[data-memo-list]')) {
        renderMemos(await api.memos(genealogyId), genealogyId);
      }

      if (memoId && query('[data-memo-edit-page]')) {
        fillMemoForm(await api.memoDetail(genealogyId, memoId));
      }
    } catch (error) {
      showMessage(error.message || '备忘录加载失败');
    }
  }

  async function submitMemo(form) {
    var api = getApi();
    var genealogyId = getCurrentGenealogyId();
    var memoId = getCurrentMemoId();
    var body = buildMemoBody(getFormValues(form));

    if (!api || !genealogyId) return;
    if (!body.memoTitle) {
      showMessage('请填写备忘标题');
      return;
    }

    try {
      if (memoId) {
        await api.updateMemo(genealogyId, memoId, body);
      } else {
        await api.createMemo(genealogyId, body);
      }

      showMessage('备忘录已保存');
      root.location.href = 'profile-memo.html?genealogyId=' + encodeURIComponent(genealogyId);
    } catch (error) {
      showMessage(error.message || '保存备忘录失败');
    }
  }

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

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

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

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

    bindActions();
    loadMemos();
  }

  return {
    normalizeList: normalizeList,
    buildMemoBody: buildMemoBody,
    buildMemoRow: buildMemoRow,
    init: init
  };
});