Page({
  data: {
    products: [
      {
        id: 1,
        image: 'https://img1.baidu.com/it/u=2052658756,3021621759&fm=253&fmt=auto&app=120&f=JPEG?w=500&h=500',
        name: '幼儿启蒙绘本10册套装',
        desc: '适合3-6岁儿童，培养创造力',
        price: 134.00,
        quantity: 1
      },
      {
        id: 1,
        image: 'https://img1.baidu.com/it/u=2052658756,3021621759&fm=253&fmt=auto&app=120&f=JPEG?w=500&h=500',
        name: '幼儿启蒙绘本10册套装',
        desc: '适合3-6岁儿童，培养创造力',
        price: 134.00,
        quantity: 1
      }
    ],
    totalAmount: 134.00,
    dingweiimg: '',
    youjiantouimg: '',
  },

  onLoad(options) {
    // const title = options.title ? decodeURIComponent(options.title) : '商品列表';
    // this.setData({ title });
    // wx.setNavigationBarTitle({ title });

    const fileIDs = [
      'cloud://cloud1-6g98iw7i28b01747.636c-cloud1-6g98iw7i28b01747-1367995226/images/icon/dingwei.png',
      'cloud://cloud1-6g98iw7i28b01747.636c-cloud1-6g98iw7i28b01747-1367995226/images/icon/youjiantou.png',
    ];
    
    // 并发下载多个 fileID
    Promise.all(
      fileIDs.map(fileID => wx.cloud.downloadFile({ fileID }))
    ).then(results => {
      // 每个 result 对应一个下载结果
      const tempFilePaths = results.map(r => r.tempFilePath);
      console.log('全部下载成功:', tempFilePaths);
      this.setData({
        dingweiimg: tempFilePaths[0],
        youjiantouimg: tempFilePaths[1],
      });
    }).catch(err => {
      console.error('有文件下载失败:', err);
    });
  },

  decreaseQuantity(e) {
    const index = e.currentTarget.dataset.index;
    let products = this.data.products;
    if (products[index].quantity > 1) {
      products[index].quantity--;
      this.setData({ products });
      this.calculateTotal();
    }
  },

  increaseQuantity(e) {
    const index = e.currentTarget.dataset.index;
    let products = this.data.products;
    products[index].quantity++;
    this.setData({ products });
    this.calculateTotal();
  },

  calculateTotal() {
    let totalAmount = 0;
    this.data.products.forEach(item => {
      totalAmount += item.price * item.quantity;
    });
    this.setData({ totalAmount });
  },

  handlePay() {
    // 处理支付逻辑
  },

  setGridView() {
    wx.navigateTo({
      url: '/subpackages/addresslist/addresslist'
    });
  }
});