const auth = require('../../../utils/auth');
const { formatTime } = require('../../../utils/format');

const PAGE_SIZE = 10;

// orderStatus 枚举 → 显示文案 & 样式 key
const STATUS_MAP = {
  0: { text: '待支付',  key: 'pending' },
  1: { text: '已支付',  key: 'success' },
  2: { text: '已取消',  key: 'cancelled' },
  3: { text: '已退款',  key: 'refunded' },
  4: { text: '已发货',  key: 'success' },
  5: { text: '已完成',  key: 'success' }
};

function formatOrder(item) {
  const statusInfo = STATUS_MAP[item.orderStatus] || { text: item.orderStatus || '-', key: 'default' };
  return {
    ...item,
    statusText: statusInfo.text,
    statusKey: statusInfo.key,
    payTimeStr: item.paymentTime ? formatTime(item.paymentTime) : (item.createdTime ? formatTime(item.createdTime) : '-'),
    actualAmount: item.actualAmount != null ? item.actualAmount : '-',
    refundAmount: item.refundAmount != null && item.refundAmount > 0 ? item.refundAmount : ''
  };
}

Page({
  data: {
    loading: false,
    noMore: false,
    pageNo: 1,
    total: 0,
    orders: []
  },

  onLoad() {
    this.loadOrders(true);
  },

  onPullDownRefresh() {
    this.loadOrders(true).finally(() => wx.stopPullDownRefresh());
  },

  async loadOrders(refresh = false) {
    if (this.data.loading) return;
    const pageNo = refresh ? 1 : this.data.pageNo;
    if (!refresh && this.data.noMore) return;

    this.setData({ loading: true });
    try {
      const res = await auth.fetchMyOrders({ pageNo, pageSize: PAGE_SIZE });
      const rows = (res && res.rows) || [];
      const total = (res && res.total) || 0;
      const formatted = rows.map(formatOrder);
      const newOrders = refresh ? formatted : [...this.data.orders, ...formatted];
      const noMore = newOrders.length >= total;
      this.setData({
        orders: newOrders,
        pageNo: pageNo + 1,
        total,
        noMore
      });
    } catch (err) {
      wx.showToast({ title: err?.message || '加载失败', icon: 'none' });
    } finally {
      this.setData({ loading: false });
    }
  },

  onBack() {
    if (getCurrentPages().length > 1) {
      wx.navigateBack();
    } else {
      wx.switchTab({ url: '/pages/mine/mine' });
    }
  },

  onOrderTap(e) {
    const { id } = e.currentTarget.dataset;
    wx.navigateTo({ url: `/subpackages/mine/order-detail/order-detail?id=${id}` });
  },

  onReachBottom() {
    this.loadOrders(false);
  }
});