const { withRecordAccess } = require('../../utils/record-access');
const { withDataCache } = require('../../utils/page-cache');
const { tryLoginRenewal } = require('../../utils/subscribe');
const { getLayout } = require('../../utils/layout');
const { api } = require('../../utils/request');

function formatBytes(bytes) {
  bytes = bytes || 0;
  if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(1) + ' KB';
  if (bytes < 1024 * 1024 * 1024) return (bytes / 1024 / 1024).toFixed(1) + ' MB';
  return (bytes / 1024 / 1024 / 1024).toFixed(2) + ' GB';
}

Page(withRecordAccess(withDataCache({
  onLoginSubscribeTap: function() { return tryLoginRenewal(); },
  onResize: function () { this.setData(getLayout()); },

  data: {
    loading: true,
    error: false,
    usedBytes: 0,
    usedText: '0 MB',
    freeMb: 200,
    freeText: '200 MB',
    percent: 0,
    overQuota: false,
    isVip: false,
    isUnlimited:false,
    quotaText:"200 MB",
    vipExpireText: '',
    plans: [],
    paying: false,
  },

  onLoad: function () { this._unloaded = false; this.setData(getLayout()); },
  onUnload: function () { this._unloaded = true; },
  onShow: function () { this.loadInfo(); },
  onPullDownRefresh: function () { this.loadInfo().then(function () { wx.stopPullDownRefresh(); }); },

  loadInfo: function () {
    var self = this;
    this.setData({ loading: true, error: false });
    return api.storageInfo().then(function (d) {
      var freeBytes = d.quota_bytes != null ? d.quota_bytes : (d.quotaBytes != null ? d.quotaBytes : (d.free_bytes || d.freeBytes || 0));
 var unlimited=!!(d.is_unlimited || d.isUnlimited);
      var usedBytes = d.used_bytes || d.usedBytes || 0;
      var percent = freeBytes > 0 ? Math.min(100, Math.round(usedBytes / freeBytes * 100)) : 0;
      var overQuota = usedBytes > freeBytes;
      var plans = (d.plans || []).map(function (p) {
        var cents = p.price_cents || p.priceCents || 0;
        return {
          key: p.key,
          name: p.name,
          priceCents:cents,
          version:p.updated_at || p.updatedAt,
          priceText: (cents / 100).toFixed(2),
          unit: (p.months || (p.key==='year'?12:1))+'个月',
          description: (Number(p.quota_mb != null ? p.quota_mb : p.quotaMb || 0)===0 ? '无限空间' : formatBytes(Number(p.quota_mb != null ? p.quota_mb : p.quotaMb)*1024*1024))+' · 有效期'+(p.months || (p.key==='year'?12:1))+'个月',

        };
      });
      var vipExpireText = '';
      if (d.is_vip || d.isVip) {
        var expire = d.vip_expire_at || d.vipExpireAt ? String(d.vip_expire_at || d.vipExpireAt).slice(0, 10) : '';
        vipExpireText = expire ? ('有效期至 ' + expire) : '已开通容量套餐';
      }
      self.setData({
        loading: false,
        usedBytes: usedBytes,
        usedText: formatBytes(usedBytes),
        freeMb: d.free_mb != null ? d.free_mb : (d.freeMb != null ? d.freeMb : 200),
        freeText: formatBytes(freeBytes),
        percent: percent,
        overQuota: overQuota,
        isVip: !!(d.is_vip || d.isVip),
        isUnlimited:unlimited,
        quotaText:unlimited?"无限空间":formatBytes(freeBytes),
        vipExpireText: vipExpireText,
        plans: plans,
      });
    }).catch(function (e) {
      self.setData({ loading: false, error: true });
      console.error('加载存储信息失败', e);
    });
  },

  buyPlan: function (e) {
    var key = e.currentTarget.dataset.key;
    var self = this;
    if (this.data.paying) return;
    var plan = null;
    for (var i = 0; i < this.data.plans.length; i++) {
      if (this.data.plans[i].key === key) { plan = this.data.plans[i]; break; }
    }
    if (!plan) return;

    wx.showLoading({ title: '下单中...', mask: true });
    this.setData({ paying: true });
    api.storageCreateOrder({ plan_key: key, expected_price_cents:plan.priceCents, expected_plan_version:plan.version }).then(function (order) {
      wx.hideLoading();
      if (order && order.pay_provider === 'wechat' && order.payment) {
        self.callWechatPay(order);
        return;
      }
      self.setData({ paying: false });
      wx.showToast({ title: '支付参数不完整，请重新下单', icon: 'none' });
    }).catch(function (err) {
      wx.hideLoading();
      self.setData({ paying: false });
      wx.showToast({ title: (err && err.error) || '下单失败', icon: 'none' });
    });
  },

  callWechatPay: function (order) {
    var self = this;
    var payment = order.payment;
    if (!wx.requestPayment) {
      this.setData({ paying: false });
      wx.showToast({ title: '当前环境不支持微信支付，请使用微信真机', icon: 'none' });
      return;
    }
    wx.requestPayment({
      timeStamp: payment.time_stamp,
      nonceStr: payment.nonce_str,
      package: payment.package,
      signType: payment.sign_type,
      paySign: payment.pay_sign,
      success: function () { return self.confirmWechatPayment(order.out_trade_no); },
      fail: function (error) {
        // Even a cashier error can occur after payment; query the server once.
        var message = String(error && error.errMsg || '').indexOf('cancel') >= 0 ? '已取消支付' : '支付未完成';
        return self.confirmWechatPayment(order.out_trade_no, message);
      }
    });
  },

  confirmWechatPayment: async function (number, failureMessage) {
    if (this._confirming) return;
    this._confirming = true;
    try {
      for (var attempt = 0; attempt < (failureMessage ? 1 : 5); attempt++) {
        var result = await api.storageOrderStatus(number);
        if (this._unloaded) return;
        if (result.status === 'success') {
          wx.showToast({ title: '支付成功，会员已开通', icon: 'success' });
          await this.loadInfo();
          return;
        }
        if (result.status === 'closed') {
          wx.showToast({ title: '订单已关闭，请重新下单', icon: 'none' });
          return;
        }
        if (!failureMessage && attempt < 4) await new Promise(function (resolve) { setTimeout(resolve, 1200); });
      }
      if (!this._unloaded) wx.showToast({ title: failureMessage || '支付结果确认中，请稍后刷新', icon: 'none' });
    } catch (e) {
      if (!this._unloaded) wx.showToast({ title: '支付结果暂未确认，请稍后刷新', icon: 'none' });
    } finally {
      this._confirming = false;
      if (!this._unloaded) this.setData({ paying: false });
    }
  },

}, {loadInfo:['storageInfo']})));