<template>
  <Header
      :scroll-top="scrollTop"
      system-bar-area-bg="#fff"
      header-area-bg="#fff"
      bg-change-by-scroll
  >
    购物车
  </Header>
  <!-- have data  -->
  <view v-if="!showEmpty">
    <!-- manage row -->
    <view class="cart-manage">
      <view @click="manage=!manage">
        {{ manageStr }}
      </view>
    </view>
    <!-- cart body box-->
    <uv-checkbox-group
        v-model="shoppingSelect"
        shape="circle"
        activeColor="#ee6d46"
        @change="handleSingleSelect"
    >

      <card class="shopping-checkbox">
        <!-- 购物车信息 -->
        <view
            v-for="(item) in cartList"
            :key="item.id"
            class="shopping-item"
        >
          <uv-checkbox
              :name="item.id"
          />
          <view class="good">
            <Goods
                row
                imgWidth="200rpx"
                info-padding="0 0 0 40rpx"
                :goods="item.productInfo"
            >
              <template #options>
                <view class="goods-options">
                  <!-- sku select -->
                  <view class="sku-row flex">
                    <view
                        class="sku-info flex flex-jc__sb flex-ai__center"
                        @click.stop="handleOpenSkuSelect(item,goodsAttrSelectRef)"
                    >
                      <view class="info">
                        {{ item.productInfo && item.productInfo.attrInfo && item.productInfo.attrInfo.sku }}
                      </view>
                      <uv-icon
                          class="icon"
                          name="arrow-down"
                          color="#ccc"
                          size="12"
                      />
                    </view>
                  </view>
                  <!-- bottom -->
                  <view class="price-row flex flex-ai__center flex-jc__sb">
                    <!-- price -->
                    <view class="price-box flex flex-ai__end">
                      ￥{{ item.truePrice }}
                      <view class="old-price">
                        ￥{{ item.productInfo.otPrice }}
                      </view>
                    </view>
                    <!-- cart number -->
                    <view
                        class="cart-num flex flex-ai__center flex-jc__sb"
                        @click.stop=""
                    >
                      <view
                          class="button"
                          @click="handleCartNumberChange(item,'minus')"
                      >
                        <uv-icon
                            name="minus"
                            color="#333"
                            size="12"
                        ></uv-icon>
                      </view>
                      <view class="input">
                        <input
                            type="number"
                            inputmode="numeric"
                            v-model="item.cartNum"
                            @blur="(e)=>handleCartNumberInputChange(e,item)"
                        >
                      </view>
                      <view
                          class="button"
                          @click="handleCartNumberChange(item,'plus')"
                      >
                        <uv-icon
                            name="plus"
                            color="#333"
                            size="12"
                        ></uv-icon>
                      </view>
                    </view>
                  </view>
                </view>
              </template>
            </Goods>
          </view>
        </view>
        <!-- 选中了的结算统计信息 -->
        <view :class="{'select-product-settle-info':true,show:shoppingSelect.length>0}">
          <view
              class="row flex flex-ai__center flex-jc__sb"
              v-for="(item,index) in settleFields"
              :key="index"
          >
            <view class="label">
              {{ item.label }}
            </view>
            <view v-if="statisticsInfo">
              {{ item.prefix }} {{ statisticsInfo[item.field].toFixed(2) }}
            </view>
          </view>
        </view>
      </card>
    </uv-checkbox-group>
    <!-- bottom action row -->
    <view class="screen action-bar ">
      <view class="action-info">
        <view class="action-checkbox">
          <uv-checkbox-group
              shape="circle"
              activeColor="#ee6d46"
          >
            <uv-checkbox
                name="all"
                :checked="shoppingSelectAll"
                @change="handleSelectAll"
            >
              全选
            </uv-checkbox>
          </uv-checkbox-group>
        </view>
      </view>
      <view class="action-btns">
        <view
            class="action-total"
            v-show="!manage"
        >
          总计：￥{{ statisticsInfo ? statisticsInfo.totalPrice.toFixed(2) : "0.00" }}
        </view>
        <view
            class="button"
            v-if="!manage"
            @click="submitOrder"
        >结算
        </view>
        <view
            v-else
            class="button"
            @click="openDelModal(modalRef)"
        >
          删除
        </view>
      </view>
    </view>

  </view>
  <!-- null data -->
  <CartEmpty v-else />
  <!-- 商品推荐 -->
  <Recommend  />
  <view class="action-height"></view>
  <view class="h5-tabbar-height"></view>
  <!-- sku select -->
  <GoodAttrSelect
      style="z-index: 999"
      :id="openSkuProductId"
      ref="goodsAttrSelectRef"
      @close="handleCloseSkuSelect"
      @submit="(e)=>handleSubmitSkuSelect(e, goodsAttrSelectRef,cartList,handleCartNumberInputChange,doGetCartList)
"
  />
  <!-- delete modal -->
  <Modal
      ref="modalRef"
      content="确认要删除这些购物车数据吗？"
      @confirm="doDelete"
  />
  <ReturnTop :scroll-top="scrollTop" />
</template>

<script setup>
import { ref } from 'vue'
import Goods from "@/components/goodsComponents/Goods.vue";
import GoodAttrSelect from "@/components/good-attr-select/good-attr-select.vue";
import Modal from "@/components/Modal/index.vue"
import { settleFields } from "@/pages/shoppingCart/index.data";
import { useCartData, useCartNumber, useCartOption, useSku } from "@/pages/shoppingCart/index.utils";
import CartEmpty from "@/pages/shoppingCart/components/CartEmpty.vue";
import Header from "@/components/Header/index.vue"
import { onHide, onPageScroll, onReachBottom } from "@dcloudio/uni-app";
import Recommend from "@/components/Recommend/index.vue";
import { useScroll } from "@/hooks/useScroll";
import ReturnTop from "@/components/ReturnTop/index.vue"


const modalRef = ref() // 删除弹窗
const goodsAttrSelectRef = ref() // 更改sku

const {
  showEmpty,
  cartList,
  doGetCartList
} = useCartData();

const {
  manage,
  manageStr,
  shoppingSelect,
  shoppingSelectAll,
  handleSingleSelect,
  handleSelectAll,
  statisticsInfo,
  computeSelectInfoByShoppingSelect,
  openDelModal,
  doDelete,
  submitOrder,
} = useCartOption({cartList, doGetCartList})

const {
  openSkuProductId,
  handleOpenSkuSelect,
  handleCloseSkuSelect,
  handleSubmitSkuSelect
} = useSku()


const {
  handleCartNumberInputChange,
  handleCartNumberChange
} = useCartNumber({afterChange: computeSelectInfoByShoppingSelect})




onHide(() => {
  modalRef.value?.close()
  goodsAttrSelectRef.value?.close()
})

const {scrollTop} = useScroll()
</script>

<style lang="scss">
.cart-manage {
  padding: 20rpx 34rpx;
  font-size: 28rpx;
  color: #333333;
  background-color: #fff;
  display: flex;
  justify-content: flex-end;
  border-bottom: 1rpx solid #f9f9f9;
}

// 商品SKU 数量等操作条
.goods-options {
  width: 100%;

  .sku-row {
    margin-bottom: 30rpx;

    .sku-info {
      @include usePadding(10, 4);
      border: 1rpx solid #ccc;
      border-radius: 5rpx;
      font-size: 24rpx;
      transition: all .3s;
      max-width: 100%;


      .info {
        width: 100%;
        white-space: nowrap;
        text-overflow: ellipsis;
        overflow: hidden;
      }

      &:active {
        scale: 1.1;
      }

      .icon {
        margin-left: 15rpx;
      }
    }
  }

  .price-row {
    width: 100%;

    .price-box {
      font-size: 30rpx;

      .old-price {
        font-size: 20rpx;
        color: $tips-color;
        text-decoration: line-through;
        margin-left: 10rpx;
      }
    }

    .cart-num {
      font-size: 24rpx;

      .input {
        width: 120rpx;


        input {
          width: 100%;
          text-align: center;
          color: #333;
        }
      }

      .button {
        font-size: 32rpx;
        width: 34rpx;
        aspect-ratio: 1/1;
        border-radius: 5rpx;
        border: 2rpx solid #cccccc;
        box-sizing: border-box;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all .3s;

        &:active {
          scale: 1.2;
        }
      }
    }
  }
}

// 统计信息
.select-product-settle-info {
  @include usePadding(40, 0);
  font-size: 28rpx;
  transition: height .3s;
  height: 0;
  overflow: hidden;

  .row {
    margin: 20rpx 0;
  }

  &.show {
    @include usePadding(40, 10);
    border-top: 1rpx solid #E6E6E6;
    height: 260rpx;
  }
}

.action-bar {
  z-index: 89;
  height: 100rpx;


  .action-btns {
    height: 100%;
    padding: 0 0;

    .action-total {
      padding-right: 30rpx;
      font-size: 34rpx;
    }

    .button {
      margin: 0 0;
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 0 50rpx;
      background: $primary-color;
      color: $white-color;
    }
  }
}

// #ifndef H5
.action-height {
  width: 100%;
  height: 100rpx;
  background: #fff;
}

// #endif

.shopping-checkbox {
  width: 100%;

  .shopping-item {
    display: flex;
    align-items: center;
    padding: 0 20rpx;
    box-sizing: border-box;
    margin-bottom: 50rpx;

    .good {
      width: 93%;
      position: relative;
    }
  }
}
</style>
