purchase-let/pages/index/index.vue

<template>
  <view class="content">
    <up-navbar placeholder style="z-index: 10080;">
      <template #left>
        <view style="font-size: 30rpx;font-weight: bold;">惠农批发</view>
      </template>
    </up-navbar>
    <view class="navbar">
      <view style="width: 500rpx;">
        <up-search placeholder="请输入商品" @search="searchKeyword" v-model="keyword" :showAction="false"></up-search>
      </view>
      <view class="nav-item" @click="navTo('/pages/cart/cart')">
        <image src="@/static/tab/ba.png"></image>
        <text>购物车</text>
      </view>
      <view class="nav-item" @click="navTo('/pages/my/my')">
        <image src="@/static/tab/ca.png"></image>
        <text>个人中心</text>
      </view>
    </view>
    <view style="position: relative;overflow: hidden;">
      <scroll-view class="head-view" scroll-x>
        <view class="list">
          <view class="item" :class="{'item-active': topActive===item.id}" v-for="(item, index) in goodClassList"
            :key="index" @click="changeOne(item, index)">
            <view class="c-img"><up-image height="100rpx" width="100rpx" :src="item.pic"></up-image></view>
            <view class="c-text u-line-1">{{item.name}}</view>
          </view>
          <view class="item" style="width: 80rpx;height: 20rpx;">
          </view>
        </view>
      </scroll-view>
      <view class="r-btn" @click="show=1">
        <view>全</view>
        <view>部</view>
        <up-icon name="list"></up-icon>
      </view>
    </view>
    <viewPopup nav v-if="show===1" @close="show=0">
      <view class="cateOne">
        <view class="head-title">全部分类</view>
        <scroll-view scroll-y style="height: 600rpx;">
          <view class="list">
            <view class="item" :class="{'item-active': topActive===item.id}" v-for="(item, index) in goodClassList"
              :key="index" @click="changeOne(item, index)">
              <view class="c-img"><up-image height="100rpx" width="100rpx" :src="item.pic"></up-image></view>
              <view class="c-text u-line-1">{{item.name}}</view>
            </view>
          </view>
        </scroll-view>
      </view>
    </viewPopup>
    <view class="scroll-box">
      <scroll-view class="left" scroll-y>
        <view class="item u-line-1" :class="{'item-active': leftActive===item.id}" v-for="(item, index) in goodClassTow"
          :key="index" @click="changeTwo(item, index)">{{item.name}}</view>
        <view style="width: 100%;height: 300rpx;"></view>
      </scroll-view>
      <view class="right">
        <view class="classify">
          <scroll-view style="height: 90rpx;" scroll-x>
            <view class="classify-list">
              <view class="classify-list-item u-line-1" :class="{'item-active': rightActive===item.id}"
                v-for="(item, index) in goodClassThree" :key="index" @click="changeThree(item, index)">
                {{item.name}}
              </view>
              <view style="width: 70rpx;flex-shrink: 0;"></view>
            </view>
          </scroll-view>
          <view class="done" @click="show=2">
            <up-icon name="arrow-down"></up-icon>
          </view>
          <view class="order-by">
            <view class="item" :class="{'order-active': where.order==''}" @click="changeOrder('')">综合</view>
            <view class="item" :class="{'order-active': where.order=='desc'||where.order=='asc'}"
              @click="changeOrder(where.order=='asc'?'desc':'asc')">价格</view>
            <view class="item" :class="{'order-active': where.order=='sales'}" @click="changeOrder('sales')">销量</view>
          </view>
        </view>
        <viewPopup v-if="show===2" @close="show=0">
          <view class="cateOne">
            <scroll-view scroll-y style="height: 230rpx;">
              <view class="classify-list">
                <view class="classify-list-item u-line-1" :class="{'item-active': rightActive===item.id}"
                  v-for="(item, index) in goodClassThree" :key="index" @click="changeThree(item, index)">
                  {{item.name}}
                </view>
              </view>
            </scroll-view>
          </view>
        </viewPopup>
        <scroll-view class="list" scroll-y @scrolltolower="loadMoreGood">
          <view class="shop-item" v-for="(item, index) in goodList" :key="item.id" @click="openGoodPopup(item)">
            <view class="shop-img">
              <up-image width="160rpx" height="160rpx" :src="item.imgs"></up-image>
            </view>
            <view class="shop-content">
              <view class="title">
                <view class="name u-line-2">{{item.name}}</view>
                <view class="tip u-line-1">
                  <text>{{item.brand_name}}|</text>
                  <text>{{item.class_name}}|</text>
                  <text>{{item.unit_name}}</text>
                </view>
              </view>
              <view class="price-btn">
                <view class="price">￥{{item.sell}}</view>
                <view class="btn">
                  <u--icon name="plus-circle-fill" size="20" color="#20b128"></u--icon>
                </view>
              </view>
            </view>
          </view>
          <view style="width: 100%;height: 300rpx;"></view>
        </scroll-view>
      </view>
    </view>
    <view class="fiexd-btn-box">
      <view class="price-info">
        <view class="row">
          <view>合计</view>
          <view class="price">¥<text style="font-size: 36rpx;">{{cartInfo.total_price}}</text></view>
        </view>
        <!-- <view class="row">
          <view style="color: #777;">原价 ¥50.00</view>
          <view class="price">优惠 ¥0.00</view>
        </view> -->
      </view>
      <view class="btn">
        <up-button color="#20b128" :disabled="cartInfo.count==0" @click="settleAccounts">结算</up-button>
      </view>
      <view class="cart" @click="navTo('/pages/cart/cart')">
        <image src="@/static/icon/cart.png"></image>
        <view class="badge">{{cartInfo.count}}</view>
      </view>
    </view>

    <goodPopup ref="goodRef" :show="showGoodPopup" @close="showGoodPopup=false" @change="changeGood" />
  </view>
</template>

<script setup>
  import { onLoad, onShow } from "@dcloudio/uni-app"
  import { reactive, ref } from "vue"
  import { goodListApi, goodClassListApi } from "@/api/good.js"
  import { cartCreateApi, cartChangeApi, cartListApi } from "@/api/cart.js"
  import viewPopup from "@/components/viewPopup.vue"
  import goodPopup from "@/components/goodPopup.vue"
  import useCartStore from "@/store/cart.js"

  const cartStore = useCartStore();

  const show = ref(0);

  const topActive = ref(0);
  const changeOne = (item, index) => {
    console.log('选择', item, index);
    topActive.value = item.id;
    show.value = 0;
    goodClassTow.value = item?.children || [];
    goodClassThree.value = goodClassTow.value[0]?.children || [];
    leftActive.value = goodClassTow.value[0]?.id || '';
    rightActive.value = goodClassThree.value[0]?.id || '';
    getGoodList();
  }

  const leftActive = ref(0);
  const changeTwo = (item, index) => {
    console.log('选择', item, index);
    leftActive.value = item.id;
    show.value = 0;
    goodClassThree.value = item?.children || [];
    rightActive.value = goodClassThree.value[0]?.id || '';
    getGoodList();
  }

  const rightActive = ref(0);
  const changeThree = (item, index) => {
    console.log('选择', item, index);
    rightActive.value = item.id;
    show.value = 0;
    getGoodList();
  }

  const cartList = reactive(new Map());
  const addCart = (id, cart_num) => { //加入购物车
    cartCreateApi({
      cart_num: cart_num,
      is_new: 0, // 是否直接购买0否1是
      goods_id: id
    }).then(res => {
      console.log(res);
      let now = cartList.get(id) || 0;
      cartList.set(id, now + 1);
      getCartList();
    })
  }
  const removeCart = (id) => {
    let num = cartList.get(id) || 0;
    if (num == 0) return;
    cartChangeApi({
      goods_id: id,
      cart_num: num--
    }).then(res => {
      console.log(res);
      cartList.set(id, num)
    })
  }

  const keyword = ref('');

  const searchKeyword = () => {
    where.value.name = keyword.value;
    getGoodList();
  }

  const changeOrder = (order) => {
    console.log('排序', order);
    where.value.order = order;
  }

  const where = ref({
    page_no: 1,
    page_size: 25,
    name: '',
    order: ''
  })
  const loading = ref(true);
  const goodList = ref([]);
  const getGoodList = (loadmore = false) => {
    loading.value = true;
    let class_id = rightActive.value || leftActive.value || topActive.value || '';
    let class_all = '';
    // 若分类没有选中时,则直接查询上一级分类
    if(rightActive.value=='') class_all = leftActive.value;
    if(leftActive.value=='') class_all = topActive.value;
    if(topActive.value=='') class_all = '';
    if(class_all) class_id = ""; //只能带其中一个
    goodListApi({
      ...where.value,
      class_all: class_all,
      class: class_id
    }).then(res => {
      if (loadmore) goodList.value.push(...res.data.lists);
      else goodList.value = res.data.lists;
    })
  }

  // 商品列表触底
  const loadMoreGood = () => {
    console.log('触底了');
  }

  const goodClassList = ref([]); // 一级分类
  const goodClassTow = ref([]); // 二级分类
  const goodClassThree = ref([]); // 三级分类
  const getgoodClassList = () => {
    goodClassListApi().then(res => {
      res.data?.lists?.unshift({
        id: "",
        name: "全部",
        pic: "https://lihai001.oss-cn-chengdu.aliyuncs.com/def/35adb202404271727457954.png",
        children: []
      })
      res.data.lists = res.data.lists.map(item=>{
        if(!item.children) item.children = [];
        item.children?.unshift({
          id: "",
          pid: item.id,
          name: "全部",
        })
        item.children = item.children.map(t=>{
          if(!t.children) t.children = [];
          t.children?.unshift({
            id: "",
            pid: t.id,
            name: "全部",
          })
          return t;
        })
        return item;
      })
      goodClassList.value = res.data?.lists || [];
      goodClassTow.value = goodClassList.value[0]?.children || [];
      goodClassThree.value = goodClassTow.value[0]?.children || [];
      topActive.value = goodClassList.value[0]?.id;
      leftActive.value = goodClassTow.value[0]?.id;
      rightActive.value = goodClassThree.value[0]?.id;
    })
  }

  const navTo = (url) => {
    uni.navigateTo({
      url: url
    })
  }

  // 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.id, data.cart_num);
  }
  // 结算
  const settleAccounts = ()=>{
    uni.navigateTo({
      url: '/pagesOrder/settle/settle'
    })
  }
  
  // 购物车相关
  const cartInfo = ref({
    total_price: '0.00',
    count: 0
  })
  const getCartList = (res)=>{
    cartListApi({
      page_no: 1,
      page_size: 100,
    }).then(res=>{
      cartInfo.value = {
        total_price: res.data?.extend?.total_price || '0.00',
        count: res.data?.count || 0
      }
      cartStore.setCartList(res.data?.lists.map(item=>item.cart_id))
    })
  }

  onLoad(() => {
    getgoodClassList();
    getGoodList();
  })
  onShow(()=>{
    getCartList();
  })
</script>

<style lang="scss">
  .content {
    background-color: #fff;
  }

  .navbar {
    padding: 0 20rpx;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 22rpx;
    color: #777;

    .nav-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;

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

  .head-view {
    background-color: #fff;
    height: 180rpx;
    width: 750rpx;

    .list {
      height: 100%;
      display: flex;
      align-items: center;
      padding: 0 20rpx;
      font-size: 22rpx;

      .item {
        width: 120rpx;
        flex-shrink: 0;
        margin-right: 20rpx;
        display: flex;
        flex-direction: column;
        align-items: center;

        .c-img {
          height: 100rpx;
          width: 100rpx;
          flex-shrink: 0;
          border-radius: 50%;
          border: 2px solid transparent;
          overflow: hidden;
        }

        .c-text {
          width: 100%;
          text-align: center;
          box-sizing: border-box;
          padding: 2rpx 4rpx 3rpx 4rpx;
          border-radius: 50rpx;
          margin-top: 5rpx;
        }
      }

      .item-active {
        .c-img {
          border: 2px solid #20b128;
        }

        .c-text {
          background-color: #20b128;
          color: #fff;
        }
      }
    }
  }

  .r-btn {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    width: 60rpx;
    font-size: 24rpx;
    background-color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: -10rpx 0 60rpx 1rpx rgba(0, 0, 0, 0.3);
  }

  .cateOne {
    background-color: #fff;

    .head-title {
      color: #666666;
      font-size: 30rpx;
      height: 80rpx;
      line-height: 80rpx;
      padding-left: 30rpx;
    }

    .list {
      padding: 20rpx 20rpx;
      font-size: 22rpx;
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      justify-content: center;
      grid-gap: 20rpx;

      .item {
        width: 120rpx;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        align-items: center;

        .c-img {
          height: 100rpx;
          width: 100rpx;
          flex-shrink: 0;
          border-radius: 50%;
          border: 2px solid transparent;
          overflow: hidden;
        }

        .c-text {
          width: 100%;
          text-align: center;
          box-sizing: border-box;
          padding: 2rpx 4rpx 3rpx 4rpx;
          border-radius: 50rpx;
          margin-top: 5rpx;
        }
      }

      .item-active {
        .c-img {
          border: 2px solid #20b128;
        }

        .c-text {
          background-color: #20b128;
          color: #fff;
        }
      }
    }

    .classify-list {
      padding: 20rpx 30rpx;
      font-size: 22rpx;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      justify-content: center;
      grid-gap: 20rpx;

      .classify-list-item {
        flex-shrink: 0;
        text-align: center;
        width: 150rpx;
        height: 42rpx;
        line-height: 42rpx;
        background: #F6F6F6;
        border-radius: 22rpx 22rpx 22rpx 22rpx;
        border: 1rpx solid transparent;
      }

      .item-active {
        border: 1rpx solid #20b128;
        color: #20b128;
        background-color: rgba(#20b128, 0.1);
      }
    }
  }

  .scroll-box {
    // background-color: red;
    display: flex;

    .left {
      height: calc(100vh - var(--window-top) - var(--window-bottom) - 500rpx);
      /* #ifdef H5 */
      height: calc(100vh - 44px - 300rpx);
      /* #endif */
      width: 170rpx;
      box-sizing: border-box;
      background-color: #f6f6f6;
      font-size: 24rpx;

      .item {
        height: 96rpx;
        line-height: 96rpx;
        text-align: center;
      }

      .item-active {
        background-color: #fff;
        position: relative;
        color: #20b128;

        &::before {
          content: '';
          background-color: #20b128;
          width: 6rpx;
          height: 48rpx;
          border-radius: 10rpx;
          position: absolute;
          left: 0;
          top: 50%;
          transform: translate(0, -50%);
        }
      }
    }

    .right {
      height: calc(100vh - var(--window-top) - 500rpx);
      /* #ifdef H5 */
      height: calc(100vh - 96px - 180rpx);
      /* #endif */
      width: 580rpx;
      box-sizing: border-box;
      position: relative;
      overflow: hidden;

      .classify {
        height: 150rpx;
        background-color: #fff;
        border-bottom: 1rpx solid #f6f6f6;
        position: relative;
        font-size: 24rpx;

        .classify-list {
          display: flex;
          padding: 20rpx;

          .classify-list-item {
            flex-shrink: 0;
            text-align: center;
            width: 108rpx;
            height: 42rpx;
            line-height: 42rpx;
            background: #F6F6F6;
            border-radius: 22rpx 22rpx 22rpx 22rpx;
            margin-right: 20rpx;
            border: 1rpx solid transparent;
          }

          .item-active {
            border: 1rpx solid #20b128;
            color: #20b128;
            background-color: rgba(#20b128, 0.1);
          }
        }

        .done {
          height: 90rpx;
          width: 60rpx;
          position: absolute;
          top: 0;
          right: 0;
          display: flex;
          justify-content: center;
          align-items: center;
          background-color: #fff;
        }

        .order-by {
          display: flex;
          justify-content: flex-end;
          align-items: center;

          .item {
            padding-right: 20rpx;
          }

          .order-active {
            color: #20b128;
          }
        }
      }

      .list {
        height: calc(100vh - var(--window-top) - 600rpx);
        /* #ifdef H5 */
        height: calc(100vh - 44px - 400rpx);

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

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

          .shop-content {
            width: 380rpx;
            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;
                }
              }
            }
          }
        }
      }
    }
  }

  .fiexd-btn-box {
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
    height: 140rpx;
    height: calc(constant(safe-area-inset-bottom) + 140rpx);
    /* 适用于iOS设备 */
    height: calc(env(safe-area-inset-bottom) + 140rpx);
    /* 适用于Android设备 */
    padding-top: 40rpx;

    .price-info {
      .row {
        display: flex;
        font-size: 26rpx;
        align-items: center;

        &>view {
          margin-right: 15rpx;
        }

        .price {
          color: #F55726;
        }
      }
    }

    .btn {
      width: 200rpx;
    }

    .cart {
      position: absolute;
      top: -40rpx;
      left: 40rpx;

      image {
        width: 80rpx;
        height: 80rpx;
      }

      .badge {
        position: absolute;
        top: 0;
        right: 0;
        background-color: #F55726;
        color: #fff;
        border-radius: 50%;
        width: 26rpx;
        height: 26rpx;
        text-align: center;
        line-height: 26rpx;
        font-size: 18rpx;
      }
    }
  }
</style>