wx-mls/pages/couponDetail/couponDetail.js

import { couponDetail, queryCouponDetail } from '../../api/other';
import { BASE_URL } from '../../utils/request';

Page({
  data: {
    baseUrl: BASE_URL,
    codeType: 'qr',
    status: 0,
    id: '',
    couponInfo: {},
    timer: null,
    loading: true // 增加 loading 状态
  },

  onLoad(options) {
    this.setData({
      id: options.id
    });
  },

  onReady() {
    this.getCouponDetail();
  },

  onUnload() {
    this.stopPolling();
  },

  async getCouponDetail() {
    this.setData({ loading: true }); // 请求前显示加载
    try {
      const res = await couponDetail(this.data.id);
      if (res.code === 200) {
        this.updateCouponInfo(res.data);
        this.startPolling();
      } else {
        wx.showToast({
          title: res.message || '请求失败',
          icon: 'none',
          duration: 2000
        });
      }
    } catch (error) {
      console.log(error)
    } finally{
      this.setData({ loading: false });
    }
  },

  // 轮询接口
  startPolling() {
    this.stopPolling();
    this.data.timer = setTimeout(async () => {
      await this.checkCouponStatus('check');
      this.startPolling();
    }, 10000);
  },
  stopPolling() {
    if (this.data.timer) {
      clearTimeout(this.data.timer);
      this.data.timer = null;
    }
  },
  async checkCouponStatus(type) {
    const res = await queryCouponDetail(this.data.id, 1);
    if (res.code === 200 && type) {
      const { verify_status } = res.data;
      if (verify_status !== 0) {
        this.updateCouponInfo(res.data);
        this.stopPolling();
      }
    }
  },
  updateCouponInfo(data) {
    let item = {
      ...data,
      verify_status_text:
        data.verify_status == 0
          ? '未核销'
          : data.verify_status == 1
          ? '已核销'
          : '已过期'
    };
    this.setData({ couponInfo: item, status: data.verify_status });
  },
  handleBack() {
    this.checkCouponStatus();
  },
  toggleCode() {
    this.setData({
      codeType: this.data.codeType === 'qr' ? 'bar' : 'qr'
    });
  },

  onChange() {
    this.getCouponDetail();
  }
});