jiaqingjiayi-xiaochengxu/甲情_甲意/miniprogram/pages/gouwuche/gouwuche.js

import {url} from '../request'
Page({
  data: {
    id: '',
    checked: false,  // 全选的状态
    productList: [], // 商品列表
    selectedItems: [] // 每个商品的选中状态
  },

  onShow() {
    my.getStorage({
      key: 'userInfo',
      success: (res) => {
        const userInfo = res.data;
        this.setData({
          id: userInfo.id, // 获取 id
        });

        if (userInfo && userInfo.cookie) {
          my.request({
            url: url + '/api/cart/selectByUserId',
            method: 'POST',
            data: {
              id: this.data.id,
            },
            headers: {
              'content-type': 'application/json',
              'Cookie': userInfo.cookie,
            },
            dataType: 'json',
            success: (res) => {
              if (res.data.code === 0) {
                const cartItems = res.data.data;
                this.fetchProductDetails(cartItems);
              }
              console.log(res);
              console.log(this.data.id);
            },
            fail: (error) => {
              console.error('请求失败: ', JSON.stringify(error));
              my.alert({ content: '请求失败，请稍后重试' });
            },
          });
        } else {
          my.alert({
            content: '您未登录，请先登录。',
            success: () => {
              my.navigateTo({
                url: '/pages/denglu/denglu',
              });
            },
          });
        }
      },
    });
  },
  yichu(){
    my.getStorage({
      key: 'userInfo',
      success: (res) => {
        const userInfo = res.data;
        this.setData({
          id: userInfo.id, // 获取 id
        });

        if (userInfo && userInfo.cookie) {
          my.request({
            url: url + '/api/cart/delete',
            method: 'POST',
            data: {
              id: item.commoditiesId,
            },
            headers: {
              'content-type': 'application/json',
              'Cookie': userInfo.cookie,
            },
            dataType: 'json',
            success: (res) => {
              alert('成功移除商品')
              console.log(res);
            },
            fail: (error) => {
              console.error('请求失败: ', JSON.stringify(error));
              my.alert({ content: '请求失败，请稍后重试' });
            },
          });
        } else {
          my.alert({
            content: '您未登录，请先登录。',
            success: () => {
              my.navigateTo({
                url: '/pages/denglu/denglu',
              });
            },
          });
        }
      },
    });
  },

  fetchProductDetails(cartItems) {
    const promises = cartItems.map((item) => {
      return new Promise((resolve, reject) => {
        my.request({
          url: url + '/api/commodities/getById/commodities',
          method: 'GET',
          data: { 
            id:item.commoditiesId  
          },
          headers: { 'content-type': 'application/json' },
          success: (res) => {
            if (res.data.code === 0) {
              resolve(res.data.data);
              console.log(res);
              console.log('ajsdhjasoijdkas');
              console.log(this.data.id)
            } else {
              reject(`商品信息获取失败: ${res.data.message}`);
            }
          },
          fail: (error) => {
            reject(error);
          },
        });
      });
    });

    Promise.all(promises)
      .then((productList) => {
        this.setData({
          productList,
          selectedItems: new Array(productList.length).fill(false), // 初始化所有商品的选中状态
        });
      })
      .catch((error) => {
        console.error('商品信息获取失败: ', error);
        my.alert({ content: '商品信息获取失败，请稍后重试' });
      });
  },
  onChange(value, e) {
    console.log(value, e);
},

  // 全选控制
  toggleChange() {
    const newChecked = !this.data.checked;
    const selectedItems = new Array(this.data.productList.length).fill(newChecked); // 全选时，更新所有商品的选中状态
    this.setData({
      checked: newChecked,
      selectedItems,
    });
  },

  // 单独控制每个商品的选中状态
  handleCheckedChange(e) {
    console.log(e);  // 打印出 e 对象，检查其结构
    const index = e.target.dataset.index;  // 获取当前商品的索引
    if (index === undefined) {
      console.error('e.target.dataset.index is undefined');
      return;
    }
    const selectedItems = [...this.data.selectedItems];  // 获取当前的选中状态
    selectedItems[index] = e.detail.value;  // 更新该商品的选中状态
    this.setData({
      selectedItems,  // 更新选中状态
    });
  },
  
  // 计算总价
  calculateTotalPrice() {
    const selectedItems = this.data.selectedItems;
    const productList = this.data.productList;
    let totalPrice = 0;
    selectedItems.forEach((selected, index) => {
      if (selected) {
        totalPrice += parseFloat(productList[index].commoditiesPrice);
      }
    });
    this.setData({
      totalPrice: totalPrice.toFixed(2),
    });
  },
});