(function () {
  'use strict';

  var GATE_FEATURES = ['高清预览', '成品打印', '云端保存', '导出设计文件'];
  var _gate = { index: null, payIndex: null, plans: [], selectedId: null, gateOpts: null };

  var pay = window.SoonMemberPay;
  var plansUi = window.SoonMemberPlan;

  function esc(s) {
    if (pay && pay.esc) return pay.esc(s);
    if (s == null) return '';
    return String(s).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
  }

  function toast(msg, type) {
    if (typeof window.soonToast === 'function') window.soonToast(msg, type);
  }

  function emptyGate() {
    return { index: null, payIndex: null, plans: [], selectedId: null, gateOpts: null };
  }

  function ensureLayer(cb) {
    if (typeof layer !== 'undefined' && layer.open) {
      if (layer.config) layer.config({ skin: 'soon-layer' });
      cb();
      return;
    }
    if (typeof layui !== 'undefined') {
      layui.use(['layer'], function () {
        window.layer = layui.layer;
        layer.config({ skin: 'soon-layer' });
        cb();
      });
      return;
    }
    toast('订阅功能暂不可用，请刷新页面后重试', 'warn');
  }

  function actionCopy(actionLabel) {
    var label = (actionLabel || '使用').trim();
    if (label.indexOf('预览') >= 0 || label.indexOf('导出') >= 0) return '预览、打印与导出成品';
    if (label.indexOf('保存') >= 0 || label.indexOf('另存') >= 0) return '保存或另存到云端';
    if (label.indexOf('下载') >= 0) return '下载设计文件';
    return label;
  }

  function shellHtml(actionLabel) {
    var feat = GATE_FEATURES.map(function (t) {
      return '<li>' + esc(t) + '</li>';
    }).join('');
    return '<div class="soon-subscribe-modal">' +
      '<header class="soon-subscribe-modal__head">' +
      '<span class="soon-subscribe-modal__eyebrow">订阅功能</span>' +
      '<h3 class="soon-subscribe-modal__title">开通订阅，解锁完整能力</h3>' +
      '<p class="soon-subscribe-modal__desc">免费版可使用设计工具；订阅后可' + esc(actionCopy(actionLabel)) + '。</p>' +
      '<ul class="soon-subscribe-modal__features">' + feat + '</ul>' +
      '</header>' +
      '<div class="soon-subscribe-modal__body">' +
      '<div class="soon-subscribe-modal__section-head">' +
      '<h4 class="soon-subscribe-modal__section-title"><span class="soon-subscribe-modal__section-mark"></span>订阅方案</h4>' +
      '<p class="soon-subscribe-modal__section-sub">选择订阅周期，功能相同，随时续订</p></div>' +
      '<section class="soon-plans-grid soon-subscribe-plans-grid" data-role="plan-picker">' +
      '<p class="soon-subscribe-plans__loading">正在加载订阅方案…</p></section>' +
      '</div>' +
      '<footer class="soon-subscribe-modal__foot">' +
      '<button type="button" class="soon-subscribe-modal__stay" data-action="stay">继续设计</button>' +
      '<button type="button" class="soon-btn soon-subscribe-modal__pay" data-action="go-pay" disabled>立即支付</button>' +
      '</footer></div>';
  }

  function findPlan(id) {
    var pid = Number(id);
    for (var i = 0; i < _gate.plans.length; i++) {
      if (_gate.plans[i].id === pid) return _gate.plans[i];
    }
    return null;
  }

  function planPriceDisplay(plan) {
    if (!plan) return '';
    return plan.price_display || (plan.price_cents / 100).toFixed(2);
  }

  function renderPlanPicker(modal) {
    var picker = modal.querySelector('[data-role="plan-picker"]');
    if (!picker || !plansUi) return;
    if (!_gate.plans.length) {
      picker.innerHTML = '<p class="soon-subscribe-plans__empty">暂无可用订阅方案</p>';
      return;
    }
    picker.innerHTML = plansUi.plansGridHtml(_gate.plans, {
      allPlans: _gate.plans,
      selectedId: _gate.selectedId,
      mode: 'gate',
    });
  }

  function updatePayButton(modal) {
    var btn = modal.querySelector('[data-action="go-pay"]');
    var plan = findPlan(_gate.selectedId);
    if (!btn) return;
    if (!plan) {
      btn.disabled = true;
      btn.textContent = '立即支付';
      return;
    }
    btn.disabled = false;
    btn.textContent = '立即支付 ¥' + planPriceDisplay(plan);
  }

  function selectPlan(modal, planId) {
    var plan = findPlan(planId);
    if (!plan) return;
    _gate.selectedId = plan.id;
    renderPlanPicker(modal);
    updatePayButton(modal);
  }

  function closeGate(fireStay) {
    var idx = _gate.index;
    var payIdx = _gate.payIndex;
    var opts = _gate.gateOpts;
    _gate = emptyGate();
    if (typeof layer !== 'undefined') {
      if (idx != null) layer.close(idx);
      if (payIdx != null) layer.close(payIdx);
    }
    if (fireStay && opts && typeof opts.onStay === 'function') opts.onStay();
  }

  function onPaySuccess() {
    var gateIdx = _gate.index;
    var opts = _gate.gateOpts;
    _gate = emptyGate();
    if (typeof layer !== 'undefined') {
      if (gateIdx != null) layer.close(gateIdx);
    }
    toast('恭喜您，订阅已成功生效！', 'success');
    if (typeof window.soonLoadMembership === 'function') {
      window.soonLoadMembership(true).then(function () {
        if (typeof window.soonRefreshPortalIdentity === 'function') window.soonRefreshPortalIdentity();
      });
    }
    if (opts && typeof opts.onSuccess === 'function') opts.onSuccess();
  }

  function openPayStep(modal) {
    var plan = findPlan(_gate.selectedId);
    if (!plan || !pay || !pay.openPayModal) {
      toast('请先选择订阅方案', 'warn');
      return;
    }
    if (_gate.payIndex != null) {
      try { layer.close(_gate.payIndex); } catch (e) { /* ignore */ }
      _gate.payIndex = null;
    }
    var priceDisplay = planPriceDisplay(plan);
    _gate.payIndex = pay.openPayModal({
      planId: plan.id,
      planName: plan.name,
      priceDisplay: priceDisplay,
      shadeClose: true,
      onPaid: onPaySuccess,
      onClose: function () {
        _gate.payIndex = null;
        updatePayButton(modal);
      },
    });
  }

  function renderPlansError(modal, message) {
    var picker = modal.querySelector('[data-role="plan-picker"]');
    if (!picker) return;
    picker.innerHTML = '<p class="soon-subscribe-plans__empty">' + esc(message) +
      '<br><button type="button" class="soon-btn soon-btn--sm" data-action="retry-plans">重试</button></p>';
    updatePayButton(modal);
  }

  function loadPlans(modal) {
    var picker = modal.querySelector('[data-role="plan-picker"]');
    if (!picker) return;
    if (!pay || !plansUi) {
      renderPlansError(modal, '订阅模块未加载，请刷新页面');
      return;
    }
    picker.innerHTML = '<p class="soon-subscribe-plans__loading">正在加载订阅方案…</p>';
    updatePayButton(modal);
    pay.apiGet('/plans').then(function (ps) {
      if (!ps.ok) {
        renderPlansError(modal, ps.message || '方案加载失败');
        return;
      }
      var paid = ((ps.data && ps.data.items) || []).filter(function (p) {
        return p.code !== 'free' && p.price_cents > 0;
      });
      if (!paid.length) {
        renderPlansError(modal, '暂无可用订阅方案');
        return;
      }
      _gate.plans = paid;
      var def = paid[0];
      for (var i = 0; i < paid.length; i++) {
        if (paid[i].is_recommended) { def = paid[i]; break; }
      }
      selectPlan(modal, def.id);
    }).catch(function () {
      renderPlansError(modal, '网络错误，请稍后重试');
    });
  }

  function bindModal(modal) {
    modal.addEventListener('click', function (e) {
      var stay = e.target.closest('[data-action="stay"]');
      if (stay) {
        e.preventDefault();
        closeGate(true);
        return;
      }
      var retry = e.target.closest('[data-action="retry-plans"]');
      if (retry) {
        e.preventDefault();
        loadPlans(modal);
        return;
      }
      var goPay = e.target.closest('[data-action="go-pay"]');
      if (goPay) {
        e.preventDefault();
        if (!goPay.disabled) openPayStep(modal);
        return;
      }
      var pick = e.target.closest('[data-action="pick-plan"]');
      if (pick) {
        e.preventDefault();
        var id = Number(pick.dataset.id);
        if (id) selectPlan(modal, id);
      }
    });
    loadPlans(modal);
  }

  function openGate(opts) {
    opts = opts || {};
    if (_gate.index != null) {
      try { layer.close(_gate.index); } catch (e) { /* ignore */ }
    }
    if (_gate.payIndex != null) {
      try { layer.close(_gate.payIndex); } catch (e) { /* ignore */ }
    }
    _gate = emptyGate();
    _gate.gateOpts = opts;

    var width = Math.min(1000, window.innerWidth - 24);
    layer.open({
      type: 1,
      skin: 'soon-layer',
      title: false,
      closeBtn: 1,
      shadeClose: true,
      area: [width + 'px', 'auto'],
      content: shellHtml(opts.action),
      success: function (layero, index) {
        var layerEl = layero && layero[0] ? layero[0] : layero;
        if (layerEl && layerEl.classList) layerEl.classList.add('soon-layer--subscribe');
        var content = layerEl && layerEl.querySelector ? layerEl.querySelector('.layui-layer-content') : null;
        if (content) content.style.padding = '0';
        var modal = layerEl.querySelector('.soon-subscribe-modal');
        if (!modal) return;
        _gate.index = index;
        _gate.gateOpts = opts;
        bindModal(modal);
      },
      end: function () {
        var payIdx = _gate.payIndex;
        var closedOpts = _gate.gateOpts;
        if (payIdx != null) {
          try { layer.close(payIdx); } catch (e) { /* ignore */ }
        }
        _gate = emptyGate();
        if (closedOpts && closedOpts.onClose) closedOpts.onClose();
      },
    });
  }

  function soonShowSubscribeGate(opts) {
    if (!pay || !plansUi) {
      toast('订阅功能暂不可用，请刷新页面后重试', 'warn');
      return false;
    }
    ensureLayer(function () { openGate(opts || {}); });
    return false;
  }

  window.soonShowSubscribeGate = soonShowSubscribeGate;

  if (!window._soonSubscribeFocusBound) {
    window._soonSubscribeFocusBound = true;
    window.addEventListener('focus', function () {
      if (typeof window.soonLoadMembership !== 'function') return;
      window.soonLoadMembership(true).then(function () {
        if (typeof window.soonRefreshPortalIdentity === 'function') window.soonRefreshPortalIdentity();
      });
    });
  }
})();