menduner-mall-uniapp/sheep/components/s-groupon-block/s-groupon-block.vue

<!-- 装修商品组件：商品卡片 -->
<!-- 商品卡片 -->
<view>
	<!-- 布局1. 单列大图（上图，下内容）-->
	<view v-if="layoutType === LayoutTypeEnum.ONE_COL_BIG_IMG && state.spuList.length" class="goods-sl-box">
		<view
			class="goods-box"
			v-for="item in state.spuList"
			:key="item.id"
			:style="[{ marginBottom: data.space * 2 + 'rpx' }]"
		>
			<s-goods-column
				class=""
				size="sl"
				:goodsFields="data.fields"
				:tagStyle="data.badge"
				:data="item"
				:titleColor="data.fields.name?.color"
				:subTitleColor="data.fields.introduction.color"
				:topRadius="data.borderRadiusTop"
				:bottomRadius="data.borderRadiusBottom"
				@click="sheep.$router.go('/pages/goods/index', { id: item.id })"
			>
				<!-- 购买按钮 -->
				<template v-slot:cart>
					<button class="ss-reset-button cart-btn" :style="[buyStyle]">
						{{ btnBuy.type === 'text' ? btnBuy.text : '' }}
					</button>
				</template>
			</s-goods-column>
		</view>
	</view>

	<!-- 布局2. 双列（每一列：上图，下内容）-->
	<view
		v-if="layoutType === LayoutTypeEnum.TWO_COL && state.spuList.length"
		class="goods-md-wrap ss-flex ss-flex-wrap ss-col-top"
	>
		<view class="goods-list-box">
			<view
				class="left-list"
				:style="[{ paddingRight: data.space + 'rpx', marginBottom: data.space + 'px' }]"
				v-for="item in state.leftSpuList"
				:key="item.id"
			>
				<s-goods-column
					class="goods-md-box"
					size="md"
					:goodsFields="data.fields"
					:tagStyle="data.badge"
					:data="item"
					:titleColor="data.fields.name?.color"
					:subTitleColor="data.fields.introduction.color"
					:topRadius="data.borderRadiusTop"
					:bottomRadius="data.borderRadiusBottom"
					:titleWidth="330 - marginLeft - marginRight"
					@click="sheep.$router.go('/pages/goods/index', { id: item.id })"
					@getHeight="calculateGoodsColumn($event, 'left')"
				>
					<!-- 购买按钮 -->
					<template v-slot:cart>
						<button class="ss-reset-button cart-btn" :style="[buyStyle]">
							{{ btnBuy.type === 'text' ? btnBuy.text : '' }}
						</button>
					</template>
				</s-goods-column>
			</view>
		</view>
		<view class="goods-list-box">
			<view
				class="right-list"
				:style="[{ paddingLeft: data.space + 'rpx', marginBottom: data.space + 'px' }]"
				v-for="item in state.rightSpuList"
				:key="item.id"
			>
				<s-goods-column
					class="goods-md-box"
					size="md"
					:goodsFields="data.fields"
					:tagStyle="data.badge"
					:data="item"
					:titleColor="data.fields.name?.color"
					:subTitleColor="data.fields.introduction.color"
					:topRadius="data.borderRadiusTop"
					:bottomRadius="data.borderRadiusBottom"
					:titleWidth="330 - marginLeft - marginRight"
					@click="sheep.$router.go('/pages/goods/index', { id: item.id })"
					@getHeight="calculateGoodsColumn($event, 'right')"
				>
					<!-- 购买按钮 -->
					<template v-slot:cart>
						<button class="ss-reset-button cart-btn" :style="[buyStyle]">
							{{ btnBuy.type === 'text' ? btnBuy.text : '' }}
						</button>
					</template>
				</s-goods-column>
			</view>
		</view>
	</view>

	<!-- 布局3. 单列小图（左图，右内容） -->
	<view v-if="layoutType === LayoutTypeEnum.ONE_COL_SMALL_IMG && state.spuList.length" class="goods-lg-box">
		<view
			class="goods-box"
			:style="[{ marginBottom: data.space + 'px' }]"
			v-for="item in state.spuList"
			:key="item.id"
		>
			<s-goods-column
				class="goods-card"
				size="lg"
				:goodsFields="data.fields"
				:data="item"
				:tagStyle="data.badge"
				:titleColor="data.fields.name?.color"
				:subTitleColor="data.fields.introduction.color"
				:topRadius="data.borderRadiusTop"
				:bottomRadius="data.borderRadiusBottom"
				@tap="sheep.$router.go('/pages/goods/index', { id: item.id })"
			>
				<!-- 购买按钮 -->
				<template v-slot:cart>
					<button class="ss-reset-button cart-btn" :style="[buyStyle]">
						{{ btnBuy.type === 'text' ? btnBuy.text : '' }}
					</button>
				</template>
			</s-goods-column>
		</view>
	</view>
</view>
</template>

<script setup>
	/**
   * 商品卡片
   */
	 import {
    computed,
    onMounted,
    reactive,
    ref,
  } from 'vue';
  import sheep from '@/sheep';
  import CombinationApi from '@/sheep/api/promotion/combination';
  import SpuApi from '@/sheep/api/product/spu';
  import spu from '@/sheep/api/product/spu';

  // 布局类型
  const LayoutTypeEnum = {
    // 单列大图
    ONE_COL_BIG_IMG: 'oneColBigImg',
    // 双列
    TWO_COL: 'twoCol',
    // 单列小图
    ONE_COL_SMALL_IMG: 'oneColSmallImg',
  };

  const state = reactive({
    spuList: [],
    leftSpuList: [],
    rightSpuList: [],
  });
  const props = defineProps({
    data: {
      type: Object,
      default() {
      },
    },
    styles: {
      type: Object,
      default() {
      },
    },
  });

  const { layoutType, btnBuy, activityIds } = props.data || {};
  const { marginLeft, marginRight } = props.styles || {};

  // 购买按钮样式
  const buyStyle = computed(() => {
    if (btnBuy.type === 'text') {
      // 文字按钮：线性渐变背景颜色
      return {
        background: `linear-gradient(to right, ${btnBuy.bgBeginColor}, ${btnBuy.bgEndColor})`,
      };
    }
    if (btnBuy.type === 'img') {
      // 图片按钮
      return {
        width: '54rpx',
        height: '54rpx',
        background: `url(${sheep.$url.cdn(btnBuy.imgUrl)}) no-repeat`,
        backgroundSize: '100% 100%',
      };
    }
  });

  //region 商品瀑布流布局
  // 下一个要处理的商品索引
  let count = 0;
  // 左列的高度
  let leftHeight = 0;
  // 右列的高度
  let rightHeight = 0;

  /**
   * 计算商品在左列还是右列
   * @param height 商品的高度
   * @param where 添加到哪一列
   */
  function calculateGoodsColumn(height = 0, where = 'left') {
    // 处理完
    if (!state.spuList[count]) return;
    // 增加列的高度
    if (where === 'left') leftHeight += height;
    if (where === 'right') rightHeight += height;
    // 添加到矮的一列
    if (leftHeight <= rightHeight) {
      state.leftSpuList.push(state.spuList[count]);
    } else {
      state.rightSpuList.push(state.spuList[count]);
    }
    // 计数
    count++;
  }

  //endregion

  /**
   * 根据商品编号列表，获取商品列表
   * @param ids 商品编号列表
   * @return {Promise<undefined>} 商品列表
   */
  async function getCombinationActivityDetailList(ids) {
    const { data } = await CombinationApi.getCombinationActivityDetailList(ids);
    return data;
  }

  /**
   * 根据商品编号，获取商品详情
   * @param ids 商品编号列表
   * @return {Promise<undefined>} 商品列表
   */
   async function getSpuDetail(ids) {
    const { data: spu } = await SpuApi.getSpuDetail(ids);
    return spu;
  }


  // 初始化
  onMounted(async () => {
    // 加载活动列表
    const activityList = await getCombinationActivityDetailList(activityIds.join(','));
    // 循环获取活动商品SPU详情并添加到spuList
    for (const activity of activityList) {
      state.spuList.push(await getSpuDetail(activity.spuId));
    }


    // 循环活动列表
    activityList.forEach(activity => {
      // 获取活动商品的最低价格
      activity.products.forEach(product => {
        const combinationPrice = product.combinationPrice || Infinity;

        // 找到对应的 spu 并更新价格
        const spu = state.spuList.find(spu => activity.spuId === spu.id);
        if (spu) {
          spu.price = Math.min(combinationPrice, spu.price || Infinity);
        }
      });
    });

    // 只有双列布局时需要
    if (layoutType === LayoutTypeEnum.TWO_COL) {
      // 分列
      calculateGoodsColumn();
    }
  });
</script>

<style lang="scss" scoped>
	.goods-md-wrap {
    width: 100%;
  }

  .goods-list-box {
    width: 50%;
    box-sizing: border-box;
    .left-list {
      &:nth-last-child(1) {
        margin-bottom: 0 !important;
      }
    }
    .right-list {
      &:nth-last-child(1) {
        margin-bottom: 0 !important;
      }
    }
  }

  .goods-box {
    &:nth-last-of-type(1) {
      margin-bottom: 0 !important;
    }
  }

  .goods-md-box,
  .goods-sl-box,
  .goods-lg-box {
    position: relative;

    .cart-btn {
      position: absolute;
      bottom: 18rpx;
      right: 20rpx;
      z-index: 11;
      height: 50rpx;
      line-height: 50rpx;
      padding: 0 20rpx;
      border-radius: 25rpx;
      font-size: 24rpx;
      color: #fff;
    }
  }
</style>