purchase-let/pages/cart/cart.vue

<template>
  <view>
    <up-navbar placeholder :autoBack="true">
      <template #center>
        <view style="display: flex;align-items: center;width: 100%;justify-content: flex-start;margin-left: 100rpx;">
          <view class="tabs" :class="{'tabs-active': tabsActive==index}" v-for="(item, index) in list" :key="index"
            @click="changeTab(index)">
            {{item}}
          </view>
        </view>
      </template>
    </up-navbar>

    <swiper class="swiper-box" :current="swiperCurrent" @animationfinish="animationfinish">
      <swiper-item class="swiper-item">
        <scroll-view scroll-y style="height: 100%;width: 100%;">
          <view class="page-box1">
            <view class="total">
              <view>共计<text style="color: #20B128;">{{cartList.length}}</text>件</view>
              <view v-if="true">管理</view>
              <view v-else>完成</view>
            </view>
            <view v-if="true" class="list" style="margin-top: 80rpx;">
              <view class="shop-item" v-for="(item, index) in cartList" :key="index" @click="openGoodPopup(item)">
                <view class="shop-check">
                  <image v-if="!item.check" src="@/static/icon/n-check.png"></image>
                  <image v-else src="@/static/icon/check.png"></image>
                </view>
                <image class="shop-img" :src="item.imgs"></image>
                <view class="shop-content">
                  <view class="title">
                    <view class="name u-line-2">{{item.goods_name}}</view>
                    <view class="tip u-line-1">{{item.unit_name}}</view>
                  </view>
                  <view class="price-btn">
                    <view class="price">￥{{item.goods_total_price}}</view>
                    <view class="btn">
                      <view class="num">{{item.cart_num}}</view>
                      <u--icon name="plus-circle-fill" size="20" color="#20b128"></u--icon>
                    </view>
                  </view>
                </view>
              </view>
            </view>
            <view v-else style="margin-top: 100rpx;">
              <up-empty text="购物车空空如也"
                icon="https://lihai001.oss-cn-chengdu.aliyuncs.com/def/29955202404260944367594.png">
              </up-empty>
            </view>
            <view style="width: 100%;height: 200rpx;"></view>
          </view>
        </scroll-view>
      </swiper-item>
      <swiper-item class="swiper-item">
        <scroll-view scroll-y style="height: 100%;width: 100%;">
          <view class="page-box1">
            <view v-if="true" class="list">
              <view class="shop-item" v-for="(item, index) in 20" :key="index">
                <image class="shop-img" src="https://cdn.uviewui.com/uview/album/1.jpg"></image>
                <view class="shop-content" style="width: 490rpx;">
                  <view class="title">
                    <view class="name u-line-2">好吃的瓜果</view>
                    <view class="tip u-line-1">香味辛辣|葱香味浓|调味增香香味辛辣|葱香味浓|调味增香</view>
                  </view>
                  <view class="price-btn">
                    <view class="price">￥12.00</view>
                    <view class="btn">
                      <up-button size="small" plain color="#20b128" shape="circle">加入购物车</up-button>
                    </view>
                  </view>
                </view>
              </view>
            </view>
            <view v-else style="margin-top: 100rpx;">
              <up-empty text="没有常买的商品"
                icon="https://lihai001.oss-cn-chengdu.aliyuncs.com/def/29955202404260944367594.png">
              </up-empty>
            </view>
            <view style="width: 100%;height: 200rpx;"></view>
          </view>
        </scroll-view>
      </swiper-item>
    </swiper>

    <up-transition :show="tabsActive==0">
      <view class="cart-btn">
        <view class="cart-check">
          <image v-if="false" src="@/static/icon/n-check.png"></image>
          <image v-else src="@/static/icon/check.png"></image>
          <text style="font-size: 24rpx;">全选</text>
        </view>
        <view v-if="true" class="btn-boxs">
          <view class="all-price">
            <view style="width: 80rpx;">合计:</view>
            <view class="price">
              <text style="font-size: 24rpx;">¥</text>
              <text style="font-size: 34rpx;">{{c_price(cartInfo.total_price, 0)}}</text>
              <text style="font-size: 24rpx;">.{{c_price(cartInfo.total_price, 1)}}</text>
            </view>
          </view>
          <up-button color="#20b128" shape="circle" :disabled="false" @click="settleAccounts">去结算<text>(2)</text></up-button>
        </view>
        <view v-else class="btn-boxs">
          <!-- <view style="width: 100px;margin-right: 20rpx;"><up-button size="small" plain color="#989898" shape="circle">移入收藏夹</up-button></view> -->
          <view style="width: 80px;"><up-button size="small" plain color="#989898" shape="circle">删除</up-button></view>
        </view>
      </view>
    </up-transition>
    <goodPopup ref="goodRef" :show="showGoodPopup" @close="showGoodPopup=false" @change="changeGood" />
  </view>
</template>

<script setup>
  import { onShow } from "@dcloudio/uni-app"
  import { ref } from 'vue';
  import { cartListApi, cartChangeApi } from "@/api/cart.js"
  import goodPopup from "@/components/goodPopup.vue"

  // 创建响应式数据  
  const list = ref(['购物车', '常买']);
  const tabsActive = ref(0)
  // 定义方法  
  const changeTab = (e) => {
    tabsActive.value = e;
    swiperCurrent.value = e;
  }

  const swiperCurrent = ref(0);
  const animationfinish = ({ detail: { current } }) => {
    swiperCurrent.value = current;
    tabsActive.value = current;
  }
  
  // 结算
  const settleAccounts = ()=>{
    uni.navigateTo({
      url: '/pagesOrder/settle/settle'
    })
  }
  
  const addCart = (id, cart_num) => { //加入购物车
    cartChangeApi({
      cart_num: cart_num,
      is_new: 0, // 是否直接购买0否1是
      cart_id: id
    }).then(res => {
      getcartList();
    })
  }
  const removeCart = (id) => {
    let num = cartList.get(id) || 0;
    if (num == 0) return;
    cartChangeApi({
      cart_id: id,
      cart_num: num--
    }).then(res => {
      
    })
  }
  
  // 选择商品相关
  const showGoodPopup = ref(false);
  const goodRef = ref(null);
  const goodData = ref({});
  const openGoodPopup = (item) => { // 打开数量/重量弹窗
    goodData.value = item;
    goodRef.value.setData(item);
    showGoodPopup.value = true;
  };
  const changeGood = (data)=>{ // 确定选择商品重量
    showGoodPopup.value = false;
    addCart(data.cart_id, data.cart_num);
  }
  
  const cartList = ref([]);
  const cartInfo = ref({});
  const getcartList = ()=>{
    cartListApi().then(res=>{
      res.data.lists = res.data.lists.map(item=>{
        item.check = true;
        return item;
      })
      cartList.value = res.data.lists;
      cartInfo.value = res.data?.extend?.total_price || '0.00';
    })
  }
  
  const c_price = (price=0, index=0)=>{
    price = price + '';
    return price.split('.')[index] || 0;
  }
  
  onShow(()=>{
    getcartList();
  })
</script>

<style lang="scss">
  .tabs {
    color: #444444;
    font-size: 32rpx;
    margin-right: 30rpx;
  }

  .tabs-active {
    color: #20B128;
    // font-size: 34rpx;
    transition: 300ms;
  }

  .swiper-box {
    flex: 1;
    height: calc(100vh - var(--window-top) - var(--window-bottom));
    /* #ifdef H5 */
    height: calc(100vh - 96px);
    /* #endif */
    width: 100%;

    .swiper-item {
      height: 100%;
    }
  }

  .page-box1 {
    position: relative;

    .total {
      padding: 0 20rpx;
      display: flex;
      justify-content: space-between;
      position: fixed;
      top: var(--window-top);
      left: 0;
      right: 0;
      background-color: #f6f6f6;
      z-index: 100;
      height: 60rpx;
      line-height: 60rpx;
      font-size: 26rpx;
      color: #444;
    }

    .list {
      margin: 20rpx;
      border-radius: 20rpx;
      overflow: hidden;

      .shop-item {
        padding: 20rpx;
        border-bottom: 1rpx solid #f6f6f6;
        background-color: #fff;
        display: flex;

        .shop-check {
          width: 60rpx;
          height: 160rpx;
          display: flex;
          align-items: center;

          image {
            width: 40rpx;
            height: 40rpx;
          }
        }

        .shop-img {
          height: 160rpx;
          width: 160rpx;
          margin-right: 20rpx;
          border-radius: 14rpx;
        }

        .shop-content {
          width: 430rpx;
          display: flex;
          flex-direction: column;
          justify-content: space-between;

          .title {
            .name {
              font-size: 28rpx;
            }

            .tip {
              color: #999;
              font-size: 24rpx;
              margin: 12rpx 0;
            }
          }

          .price {
            font-size: 30rpx;
            font-weight: bold;
            color: #F55726;
          }

          .price-btn {
            display: flex;
            justify-content: space-between;

            .btn {
              display: flex;
              align-items: center;

              .num {
                width: 60rpx;
                text-align: center;
              }
            }
          }
        }
      }
    }
  }

  .cart-btn {
    width: 100%;
    height: 50px;
    box-sizing: border-box;
    background-color: pink;
    background-color: #fff;
    position: fixed;
    left: 0;
    bottom: var(--window-bottom);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20rpx;

    .cart-check {
      display: flex;
      align-items: center;

      image {
        width: 40rpx;
        height: 40rpx;
        margin: 0 10rpx;
      }
    }

    .btn-boxs {
      display: flex;

      .all-price {
        display: flex;
        align-items: center;
        margin-right: 20rpx;

        .price {
          color: #20B128;
          display: table-cell;
          vertical-align: bottom;
          font-weight: bold;
        }
      }

    }
  }
</style>