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

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

  var PACKAGE_TYPES = {
    vip: '会员套餐',
    storage: '存储扩容'
  };
  var DURATION_UNITS = {
    permanent: '永久',
    day: '天',
    month: '个月',
    year: '年'
  };
  var PAY_STATUS = {
    '0': '待支付',
    '1': '已支付',
    '2': '已关闭',
    '3': '已退款'
  };

  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 text;

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

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

  function moneyText(value, optional) {
    var text;

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

  function validLimit(value) {
    return value === undefined || value === null ||
      (Number.isSafeInteger(Number(value)) && Number(value) >= 0);
  }

  function normalizeVipPackage(item) {
    var source = item || {};
    var packageId = normalizeId(source.packageId);
    var packageName = optionalText(source.packageName);
    var packageType = optionalText(source.packageType);
    var durationUnit = optionalText(source.durationUnit);
    var price = moneyText(source.price, false);
    var originalPrice = moneyText(source.originalPrice, true);
    var status = String(source.status === undefined || source.status === null ? '' : source.status);

    if (!packageId || !packageName ||
        !Object.prototype.hasOwnProperty.call(PACKAGE_TYPES, packageType) ||
        !Object.prototype.hasOwnProperty.call(DURATION_UNITS, durationUnit) ||
        price === null || originalPrice === null || status !== '0' ||
        !validLimit(source.durationValue) || !validLimit(source.genealogyLimit) ||
        !validLimit(source.memberLimit) || !validLimit(source.storageLimitMb)) {
      return null;
    }
    return {
      packageId: packageId,
      packageName: packageName,
      packageType: packageType,
      packageDesc: optionalText(source.packageDesc),
      price: price,
      originalPrice: originalPrice,
      durationValue: source.durationValue === undefined || source.durationValue === null ? null : Number(source.durationValue),
      durationUnit: durationUnit,
      genealogyLimit: source.genealogyLimit === undefined || source.genealogyLimit === null ? null : Number(source.genealogyLimit),
      memberLimit: source.memberLimit === undefined || source.memberLimit === null ? null : Number(source.memberLimit),
      storageLimitMb: source.storageLimitMb === undefined || source.storageLimitMb === null ? null : Number(source.storageLimitMb),
      remark: optionalText(source.remark)
    };
  }

  function normalizeVipPackages(data) {
    if (!Array.isArray(data)) return [];
    return data.map(normalizeVipPackage).filter(Boolean);
  }

  function normalizeGenealogyOption(item) {
    var source = item || {};
    var genealogyId = normalizeId(source.genealogyId);
    var genealogyName = optionalText(source.genealogyName);

    if (!genealogyId || !genealogyName) return null;
    return {
      genealogyId: genealogyId,
      genealogyName: genealogyName,
      surname: optionalText(source.surname)
    };
  }

  function buildVipOrderBody(values) {
    var source = values || {};
    var body = {};
    var packageId = normalizeId(source.packageId);
    var genealogyId = normalizeId(source.genealogyId);
    var payType = optionalText(source.payType);

    if (packageId) body.packageId = packageId;
    else if (source.packageId !== undefined) body.invalidPackageId = true;
    if (genealogyId) body.genealogyId = genealogyId;
    else if (source.genealogyId) body.invalidGenealogyId = true;
    if (payType) body.payType = payType;
    return body;
  }

  function validateVipOrderBody(body) {
    if (!body || !normalizeId(body.packageId) || body.invalidPackageId) return '请选择有效会员套餐';
    if (body.invalidGenealogyId ||
        (body.genealogyId !== undefined && body.genealogyId !== null &&
          String(body.genealogyId).trim() !== '' && !normalizeId(body.genealogyId))) {
      return '家谱选项无效';
    }
    if (body.payType && body.payType !== 'wechat') return '支付方式无效';
    return '';
  }

  function normalizeVipOrder(item) {
    var source = item || {};
    var orderId = normalizeId(source.orderId);
    var packageId = normalizeId(source.packageId);
    var genealogyId = source.genealogyId === undefined || source.genealogyId === null
      ? ''
      : normalizeId(source.genealogyId);
    var orderAmount = moneyText(source.orderAmount, false);
    var payAmount = moneyText(source.payAmount, false);
    var payStatus = String(source.payStatus === undefined || source.payStatus === null ? '' : source.payStatus);
    var status = String(source.status === undefined || source.status === null ? '' : source.status);

    if (!orderId || !packageId || !optionalText(source.orderNo) ||
        !optionalText(source.packageName) ||
        (source.genealogyId !== undefined && source.genealogyId !== null && !genealogyId) ||
        orderAmount === null || payAmount === null ||
        !Object.prototype.hasOwnProperty.call(PAY_STATUS, payStatus) ||
        ['0', '1'].indexOf(status) < 0) {
      return null;
    }
    return {
      orderId: orderId,
      orderNo: optionalText(source.orderNo),
      packageId: packageId,
      packageName: optionalText(source.packageName),
      genealogyId: genealogyId,
      genealogyNo: optionalText(source.genealogyNo),
      genealogyName: optionalText(source.genealogyName),
      orderAmount: orderAmount,
      payAmount: payAmount,
      payType: optionalText(source.payType),
      payStatus: payStatus,
      payTime: optionalText(source.payTime),
      expireTime: optionalText(source.expireTime),
      status: status,
      remark: optionalText(source.remark)
    };
  }

  function normalizeVipOrders(data) {
    if (!Array.isArray(data)) return [];
    return data.map(normalizeVipOrder).filter(Boolean);
  }

  function renderVipPackages(data, selectedPackageId) {
    var items = Array.isArray(data) ? data : [];
    var selectedId = normalizeId(selectedPackageId);

    if (!items.length) return '<div class="api-empty">当前没有可用会员套餐</div>';
    return items.map(function (item) {
      var duration = item.durationUnit === 'permanent'
        ? DURATION_UNITS[item.durationUnit]
        : (item.durationValue === null ? '' : item.durationValue) + DURATION_UNITS[item.durationUnit];
      var limits = [
        item.genealogyLimit === null ? '' : '家谱 ' + item.genealogyLimit + ' 部',
        item.memberLimit === null ? '' : '成员 ' + item.memberLimit + ' 人',
        item.storageLimitMb === null ? '' : '存储 ' + item.storageLimitMb + ' MB'
      ].filter(Boolean).join(' · ');

      return '<button class="module-card' + (item.packageId === selectedId ? ' is-selected' : '') +
        '" type="button" data-vip-package-id="' + escapeHtml(item.packageId) +
        '" data-vip-package-name="' + escapeHtml(item.packageName) + '"><span class="icon">会</span><h3>' +
        escapeHtml(item.packageName) + '</h3><p>' +
        escapeHtml([PACKAGE_TYPES[item.packageType], item.packageDesc, duration, limits].filter(Boolean).join(' · ')) +
        '</p><strong>¥' + escapeHtml(item.price) + '</strong></button>';
    }).join('');
  }

  function renderGenealogyOptions(data) {
    var items = Array.isArray(data) ? data.map(normalizeGenealogyOption).filter(Boolean) : [];

    return '<option value="">不关联具体家谱</option>' + items.map(function (item) {
      return '<option value="' + escapeHtml(item.genealogyId) + '">' +
        escapeHtml(item.genealogyName + (item.surname ? ' · ' + item.surname + '氏' : '')) +
        '</option>';
    }).join('');
  }

  function renderVipOrders(data) {
    var items = normalizeVipOrders(data);

    if (!items.length) return '<div class="api-empty">当前没有会员订单</div>';
    return items.map(function (item) {
      var details = [
        item.orderNo,
        item.genealogyName,
        '订单金额 ¥' + item.orderAmount,
        '应付 ¥' + item.payAmount,
        item.payType ? '支付方式 ' + item.payType : '',
        item.payTime ? '支付时间 ' + item.payTime : '',
        item.expireTime ? '有效期至 ' + item.expireTime : '',
        item.remark
      ].filter(Boolean).join(' · ');

      return '<article class="module-row"><div><h3>' + escapeHtml(item.packageName) +
        '</h3><p>' + escapeHtml(details) + '</p></div><span class="pill">' +
        PAY_STATUS[item.payStatus] + '</span></article>';
    }).join('');
  }

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

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

  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';
  }

  async function init() {
    var page = root.document && root.document.querySelector('[data-vip-page]');
    var packageList = root.document && root.document.querySelector('[data-vip-package-list]');
    var selectedText = root.document && root.document.querySelector('[data-vip-selected-package]');
    var genealogySelect = root.document && root.document.querySelector('[data-vip-genealogy-options]');
    var form = root.document && root.document.querySelector('[data-vip-order-form]');
    var submit = root.document && root.document.querySelector('[data-vip-order-submit]');
    var status = root.document && root.document.querySelector('[data-vip-order-status]');
    var refresh = root.document && root.document.querySelector('[data-vip-order-refresh]');
    var orderList = root.document && root.document.querySelector('[data-vip-order-list]');
    var api = root.GenealogyApi && root.GenealogyApi.defaultClient;
    var packages = [];
    var selectedPackageId = '';
    var writePending = false;

    if (!page) return;
    if (shouldRedirectToLogin(api)) {
      redirectToLogin(api);
      return;
    }
    if (!packageList || !selectedText || !genealogySelect || !form || !orderList ||
        !api.vipPackages || !api.genealogiesMine || !api.vipOrders || !api.createVipOrder) {
      if (status) status.textContent = '会员服务接口初始化失败，请刷新后重试';
      return;
    }

    function setStatus(message) {
      if (status) status.textContent = message;
    }

    function renderPackages() {
      packageList.innerHTML = renderVipPackages(packages, selectedPackageId);
    }

    function renderOrders(orders) {
      orderList.innerHTML = renderVipOrders(orders);
    }

    async function loadOrders() {
      var orders = normalizeVipOrders(await api.vipOrders());
      renderOrders(orders);
      return orders;
    }

    try {
      var initial = await Promise.all([api.vipPackages(), api.genealogiesMine(), api.vipOrders()]);
      packages = normalizeVipPackages(initial[0]);
      renderPackages();
      genealogySelect.innerHTML = renderGenealogyOptions(initial[1]);
      renderOrders(initial[2]);
      setStatus(packages.length ? '请选择会员套餐' : '当前没有可用会员套餐');
    } catch (error) {
      if (shouldRedirectToLogin(api, error)) {
        redirectToLogin(api);
        return;
      }
      packageList.innerHTML = '<div class="api-empty">会员套餐读取失败，请稍后重试</div>';
      orderList.innerHTML = '<div class="api-empty">会员订单读取失败，请稍后重试</div>';
      setStatus(error.message || '会员服务读取失败，请稍后重试');
      return;
    }

    packageList.addEventListener('click', function (event) {
      var button = event.target.closest('[data-vip-package-id]');
      var packageId;
      var selected;

      if (!button || !packageList.contains(button)) return;
      packageId = normalizeId(button.getAttribute('data-vip-package-id'));
      selected = packages.find(function (item) { return item.packageId === packageId; });
      if (!selected) return;
      selectedPackageId = selected.packageId;
      selectedText.textContent = '已选择：' + selected.packageName + '（¥' + selected.price + '）';
      renderPackages();
      setStatus('可以创建会员订单');
    });

    if (refresh) {
      refresh.addEventListener('click', async function () {
        if (writePending) return;
        refresh.disabled = true;
        setStatus('正在刷新订单…');
        try {
          await loadOrders();
          setStatus('会员订单已刷新');
        } catch (error) {
          if (shouldRedirectToLogin(api, error)) {
            redirectToLogin(api);
            return;
          }
          setStatus(error.message || '会员订单刷新失败，请稍后重试');
        } finally {
          refresh.disabled = false;
        }
      });
    }

    form.addEventListener('submit', async function (event) {
      var body;
      var validation;
      var created;
      var refreshed;
      var verified;

      event.preventDefault();
      if (writePending) return;
      body = buildVipOrderBody({
        packageId: selectedPackageId,
        genealogyId: genealogySelect.value
      });
      validation = validateVipOrderBody(body);
      if (validation) {
        setStatus(validation);
        return;
      }

      writePending = true;
      if (submit) submit.disabled = true;
      setStatus('正在创建会员订单…');
      try {
        created = normalizeVipOrder(await api.createVipOrder(body));
        if (!created) throw new Error('创建响应缺少有效会员订单信息');
        refreshed = normalizeVipOrders(await api.vipOrders());
        verified = refreshed.find(function (item) { return item.orderId === created.orderId; });
        if (!verified) throw new Error('订单已提交，但重新读取未找到对应记录');
        renderOrders(refreshed);
        setStatus('订单已创建；当前 PC 暂未开放在线支付');
      } catch (error) {
        if (shouldRedirectToLogin(api, error)) {
          redirectToLogin(api);
          return;
        }
        setStatus(error.message || '会员订单创建失败，请稍后重试');
      } finally {
        writePending = false;
        if (submit) submit.disabled = false;
      }
    });
  }

  return {
    normalizeVipPackage: normalizeVipPackage,
    normalizeVipPackages: normalizeVipPackages,
    normalizeGenealogyOption: normalizeGenealogyOption,
    buildVipOrderBody: buildVipOrderBody,
    validateVipOrderBody: validateVipOrderBody,
    normalizeVipOrder: normalizeVipOrder,
    normalizeVipOrders: normalizeVipOrders,
    renderVipPackages: renderVipPackages,
    renderGenealogyOptions: renderGenealogyOptions,
    renderVipOrders: renderVipOrders,
    init: init
  };
});