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="!isAdmin" @click="isAdmin=true;">管理</view>
              <view v-else @click="isAdmin=false;">完成</view>
            </view>
            <view v-if="cartList.length>0" 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" @click.stop="checkItem(item, !item.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.sell}}</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="frequentlyList.length>0" class="list">
              <view class="shop-item" v-for="(item, index) in c" :key="index" @click="openGoodPopup(item)">
                <image class="shop-img" :src="item.imgs"></image>
                <view class="shop-content" style="width: 490rpx;">
                  <view class="title">
                    <view class="name u-line-2">{{item.name}}</view>
                    <view class="tip u-line-1">{{item.unit_name}}</view>
                  </view>
                  <view class="price-btn">
                    <view class="price">￥{{item.sell}}</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="fiexd-btn-box cart-btn">
        <view class="cart-check" @click="changeAll(checkAll===cartInfo.count)">
          <image v-if="checkAll!=cartInfo.count" src="@/static/icon/n-check.png"></image>
          <image v-else src="@/static/icon/check.png"></image>
          <text style="font-size: 24rpx;">全选</text>
          <text style="font-size: 24rpx;" v-if="checkAll">({{checkAll}})</text>
        </view>
        <view v-if="!isAdmin" 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_price0}}</text>
              <text style="font-size: 24rpx;">.{{c_price1}}</text>
            </view>
          </view>
          <view style="width: 200rpx;">
            <up-button color="#20b128" shape="circle" :disabled="!checkAll" @click="settleAccounts">去结算<text v-if="checkAll">({{checkAll}})</text></up-button>
          </view>
        </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: 100px;"><up-button @click="deleteCartList()" 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 { computed, ref, watch } from 'vue';
  import { cartListApi, cartChangeApi, cartCreateApi, cartDeleteApi, frequentlyPurchaseApi } from "@/api/cart.js"
  import goodPopup from "@/components/goodPopup.vue"
  import useCartStore from "@/store/cart.js"
  
  const cartStore = useCartStore();

  // 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;
    if(swiperCurrent.value==1) getFrequentlyPurchase();
  }
  
  // 结算
  const settleAccounts = ()=>{
    let list = [];
    cartList.value.forEach(item=>{
      if(item.check) list.push(item.cart_id);
    })
    cartStore.setCartList(list);
    uni.navigateTo({
      url: '/pagesOrder/settle/settle'
    })
  }
  // 删除
  const deleteCartList = ()=>{
    let list = [];
    cartList.value.forEach(item=>{
      if(item.check) list.push(item.cart_id);
    })
    cartDeleteApi({
      cart_id: list
    }).then(()=>{
      getcartList(false);
    })
  }
  
  // 购物车相关
  const addCart = (id, cart_num) => { //加入购物车
    cartCreateApi({
      cart_num: +cart_num,
      goods_id: id
    }).then(res => {
      getcartList();
    })
  }
  const isAdmin = ref(false); //是否管理
  
  
  // 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 = JSON.parse(JSON.stringify(item));
    goodRef.value.setData(goodData.value);
    showGoodPopup.value = true;
  };
  const changeGood = (data)=>{ // 确定选择商品重量
    showGoodPopup.value = false;
    addCart(data.goods_id||data.id, data.cart_num);
  }
  
  const cartList = ref([]);
  const cartInfo = ref({});
  const getcartList = (check=true)=>{
    cartListApi().then(res=>{
      if(check) {
        res.data.lists = res.data.lists.map(item=>{
          item.check = true;
          return item;
        })
        checkAll.value = res.data?.count || 0
      }else {
        checkAll.value = 0
      }
      cartList.value = res.data.lists;
      cartInfo.value = {
        total_price: res.data?.extend.total_price || '0.00',
        count: res.data?.count || 0
      }
    })
  }
  
  const c_price0 = computed(()=>{
    let price = cartInfo.value.total_price + '';
    return price.split('.')[0] || '0';
  })
  const c_price1 = computed(()=>{
    let price = cartInfo.value.total_price + '';
    return price.split('.')[1] || '00';
  })
  
  // 选中
  let checkAll = ref(0)
  const checkItem = (item, type)=>{
    item.check = type;
    let price = Number(cartInfo.value.total_price);
    if(type){
      price += item.sell * item.cart_num;
      checkAll.value++;
    }else {
      price -= item.sell * item.cart_num;
      checkAll.value--;
    }
    cartInfo.value.total_price = price.toFixed(2);
  }
  const changeAll = (flag=false)=>{
    cartList.value.forEach(item=>{
      item.check = !flag;
    })
    if(!flag) checkAll.value = cartInfo.value.count;
    else checkAll.value = 0;
  }
  
  // 常买记录
  const frequentlyList = ref([]);
  const where = ref({
    page_no: 1,
    page_size: 25
  })
  const getFrequentlyPurchase = ()=>{
    frequentlyPurchaseApi({
      ...where.value
    }).then(res=>{
      frequentlyList.value = res.data;
    })
  }
  
  
  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));
    /* #ifdef H5 */
    height: calc(100vh - 44px);
    /* #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 {

    .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>