432 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			Vue
		
	
	
			
		
		
	
	
			432 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			Vue
		
	
	
<!-- 秒杀商品的 SKU 选择,和 s-select-sku.vue 类似 -->
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<template>
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  <!-- 规格弹窗 -->
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  <su-popup :show="show" round="10" @close="emits('close')">
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    <!-- SKU 信息 -->
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    <view class="ss-modal-box bg-white ss-flex-col">
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      <view class="modal-header ss-flex ss-col-center">
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        <!-- 规格图片 -->
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        <view class="header-left ss-m-r-30">
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          <image
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            class="sku-image"
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            :src="sheep.$url.cdn(state.selectedSku.picUrl || state.goodsInfo.picUrl)"
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            mode="aspectFill"
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          >
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          </image>
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        </view>
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        <view class="header-right ss-flex-col ss-row-between ss-flex-1">
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          <!-- 名称 -->
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          <view class="goods-title ss-line-2">{{ state.goodsInfo.name }}</view>
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          <view class="header-right-bottom ss-flex ss-col-center ss-row-between">
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            <!-- 价格 -->
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            <view class="price-text">
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              {{ fen2yuan(state.selectedSku.price || state.goodsInfo.price) }}
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            </view>
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            <!-- 秒杀价格标签 -->
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            <view class="tig ss-flex ss-col-center">
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              <view class="tig-icon ss-flex ss-col-center ss-row-center">
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                <text class="cicon-alarm"></text>
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              </view>
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              <view class="tig-title">秒杀价</view>
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            </view>
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            <!-- 库存 -->
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            <view class="stock-text ss-m-l-20">
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              库存{{ state.selectedSku.stock || state.goodsInfo.stock }}件
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            </view>
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          </view>
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        </view>
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      </view>
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      <view class="modal-content ss-flex-1">
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        <scroll-view scroll-y="true" class="modal-content-scroll">
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          <view class="sku-item ss-m-b-20" v-for="property in propertyList" :key="property.id">
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            <view class="label-text ss-m-b-20">{{ property.name }}</view>
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            <view class="ss-flex ss-col-center ss-flex-wrap">
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              <button
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                class="ss-reset-button spec-btn"
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                v-for="value in property.values"
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                :class="[
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                  {
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                    'checked-btn': state.currentPropertyArray[property.id] === value.id,
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                  },
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                  {
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                    'disabled-btn': value.disabled === true,
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                  },
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                ]"
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                :key="value.id"
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                :disabled="value.disabled === true"
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                @tap="onSelectSku(property.id, value.id)"
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              >
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                {{ value.name }}
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              </button>
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            </view>
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          </view>
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          <view class="buy-num-box ss-flex ss-col-center ss-row-between">
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            <view class="label-text">购买数量</view>
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            <su-number-box
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              :min="1"
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              :max="min([singleLimitCount, state.selectedSku.stock])"
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              :step="1"
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              v-model="state.selectedSku.count"
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              @change="onBuyCountChange($event)"
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              activity="seckill"
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            ></su-number-box>
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          </view>
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        </scroll-view>
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      </view>
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      <view class="modal-footer">
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        <view class="buy-box ss-flex ss-col-center ss-flex ss-col-center ss-row-center">
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          <button class="ss-reset-button buy-btn" @tap="onBuy">确认</button>
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        </view>
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      </view>
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    </view>
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  </su-popup>
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</template>
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<script setup>
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  /**
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   * 秒杀活动SKU选择,
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   * 与s-select-sku的区别:多一个秒杀价的标签、没有加入购物车按钮、立即购买按钮叫确认、秒杀有最大购买数量限制
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   * 差别不大,可以考虑合并 todo @芋艿
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   */
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  // 按钮状态: active,nostock
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  import { computed, reactive, watch } from 'vue';
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  import sheep from '@/sheep';
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  import { convertProductPropertyList, fen2yuan } from '@/sheep/hooks/useGoods';
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  import { min } from 'lodash-es';
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  const emits = defineEmits(['change', 'addCart', 'buy', 'close']);
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  const props = defineProps({
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    modelValue: {
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      type: Object,
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      default() {},
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    },
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    show: {
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      type: Boolean,
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      default: false,
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    },
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    // 单次限购数量
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    singleLimitCount: {
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      type: Number,
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      default: 1,
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    },
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  });
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  const state = reactive({
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    goodsInfo: computed(() => props.modelValue),
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    selectedSku: {},
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    currentPropertyArray: [],
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  });
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  const propertyList = convertProductPropertyList(state.goodsInfo.skus);
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  // SKU 列表
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  const skuList = computed(() => {
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    let skuPrices = state.goodsInfo.skus;
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    for (let price of skuPrices) {
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      price.value_id_array = price.properties.map((item) => item.valueId);
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    }
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    return skuPrices;
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  });
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  watch(
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    () => state.selectedSku,
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    (newVal) => {
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      emits('change', newVal);
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    },
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    {
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      immediate: true, // 立即执行
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      deep: true, // 深度监听
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    },
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  );
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  const onBuy = () => {
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    if (state.selectedSku.id) {
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      if (state.selectedSku.stock <= 0) {
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        sheep.$helper.toast('库存不足');
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      } else {
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        emits('buy', state.selectedSku);
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      }
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    } else {
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      sheep.$helper.toast('请选择规格');
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    }
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  };
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  // 购买数量改变
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  function onBuyCountChange(buyCount) {
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    if (buyCount > 0 && state.selectedSku.count !== buyCount) {
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      state.selectedSku.count = buyCount;
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    }
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  }
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  // 改变禁用状态
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  const changeDisabled = (isChecked = false, propertyId = 0, valueId = 0) => {
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    let newSkus = []; // 所有可以选择的 sku 数组
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    if (isChecked) {
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      // 情况一:选中 property
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      // 获得当前点击选中 property 的、所有可用 SKU
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      for (let price of skuList.value) {
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        if (price.stock <= 0) {
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          continue;
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        }
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        if (price.value_id_array.indexOf(valueId) >= 0) {
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          newSkus.push(price);
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        }
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      }
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    } else {
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      // 情况二:取消选中 property
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      // 当前所选 property 下,所有可以选择的 SKU
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      newSkus = getCanUseSkuList();
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    }
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    // 所有存在并且有库存未选择的 SKU 的 value 属性值 id
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    let noChooseValueIds = [];
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    for (let price of newSkus) {
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      noChooseValueIds = noChooseValueIds.concat(price.value_id_array);
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    }
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    noChooseValueIds = Array.from(new Set(noChooseValueIds)); // 去重
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    if (isChecked) {
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      // 去除当前选中的 value 属性值 id
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      let index = noChooseValueIds.indexOf(valueId);
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      noChooseValueIds.splice(index, 1);
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    } else {
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      // 循环去除当前已选择的 value 属性值 id
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      state.currentPropertyArray.forEach((currentPropertyId) => {
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        if (currentPropertyId.toString() !== '') {
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          return;
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        }
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        // currentPropertyId 为空是反选 填充的
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        let index = noChooseValueIds.indexOf(currentPropertyId);
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        if (index >= 0) {
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          // currentPropertyId 存在于 noChooseValueIds
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          noChooseValueIds.splice(index, 1);
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        }
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      });
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    }
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    // 当前已选择的 property 数组
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    let choosePropertyIds = [];
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    if (!isChecked) {
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      // 当前已选择的 property
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      state.currentPropertyArray.forEach((currentPropertyId, currentValueId) => {
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        if (currentPropertyId !== '') {
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          // currentPropertyId 为空是反选 填充的
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          choosePropertyIds.push(currentValueId);
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        }
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      });
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    } else {
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      // 当前点击选择的 property
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      choosePropertyIds = [propertyId];
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    }
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    for (let propertyIndex in propertyList) {
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      // 当前点击的 property、或者取消选择时候,已选中的 property 不进行处理
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      if (choosePropertyIds.indexOf(propertyList[propertyIndex]['id']) >= 0) {
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        continue;
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      }
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      // 如果当前 property id 不存在于有库存的 SKU 中,则禁用
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      for (let valueIndex in propertyList[propertyIndex]['values']) {
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        propertyList[propertyIndex]['values'][valueIndex]['disabled'] =
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          noChooseValueIds.indexOf(propertyList[propertyIndex]['values'][valueIndex]['id']) < 0; // true 禁用 or false 不禁用
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      }
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    }
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  };
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  // 获取可用的(有库存的)SKU 列表
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  const getCanUseSkuList = () => {
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    let newSkus = [];
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    for (let sku of skuList.value) {
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      if (sku.stock <= 0) {
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        continue;
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      }
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      let isOk = true;
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      state.currentPropertyArray.forEach((propertyId) => {
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        // propertyId 不为空,并且,这个 条 sku 没有被选中,则排除
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        if (propertyId.toString() !== '' && sku.value_id_array.indexOf(propertyId) < 0) {
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          isOk = false;
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        }
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      });
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      if (isOk) {
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        newSkus.push(sku);
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      }
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    }
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    return newSkus;
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  };
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  // 选择规格
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  const onSelectSku = (propertyId, valueId) => {
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    // 清空已选择
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    let isChecked = true; // 选中 or 取消选中
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    if (
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      state.currentPropertyArray[propertyId] !== undefined &&
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      state.currentPropertyArray[propertyId] === valueId
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    ) {
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      // 点击已被选中的,删除并填充 ''
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      isChecked = false;
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      state.currentPropertyArray.splice(propertyId, 1, '');
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    } else {
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      // 选中
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      state.currentPropertyArray[propertyId] = valueId;
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    }
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    // 选中的 property 大类
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    let choosePropertyId = [];
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    state.currentPropertyArray.forEach((currentPropertyId) => {
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      if (currentPropertyId !== '') {
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        // currentPropertyId 为空是反选 填充的
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        choosePropertyId.push(currentPropertyId);
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      }
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    });
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    // 当前所选 property 下,所有可以选择的 SKU 们
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    let newSkuList = getCanUseSkuList();
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    // 判断所有 property 大类是否选择完成
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    if (choosePropertyId.length === propertyList.length && newSkuList.length) {
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      newSkuList[0].count = state.selectedSku.count || 1;
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      state.selectedSku = newSkuList[0];
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    } else {
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      state.selectedSku = {};
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    }
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    // 改变 property 禁用状态
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    changeDisabled(isChecked, propertyId, valueId);
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  };
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  changeDisabled(false);
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</script>
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<style lang="scss" scoped>
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  // 购买
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  .buy-box {
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    padding: 10rpx 20rpx;
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    .buy-btn {
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      width: 100%;
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      height: 80rpx;
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      border-radius: 40rpx;
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      background: linear-gradient(90deg, #ff5854, #ff2621);
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      color: #fff;
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    }
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  }
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  .ss-modal-box {
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    border-radius: 30rpx 30rpx 0 0;
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    max-height: 1000rpx;
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    .modal-header {
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      position: relative;
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      padding: 80rpx 20rpx 40rpx;
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      .sku-image {
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        width: 160rpx;
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        height: 160rpx;
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        border-radius: 10rpx;
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      }
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      .header-right {
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        height: 160rpx;
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      }
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      .close-icon {
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        position: absolute;
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        top: 10rpx;
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        right: 20rpx;
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        font-size: 46rpx;
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        opacity: 0.2;
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      }
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      .goods-title {
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        font-size: 28rpx;
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        font-weight: 500;
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        line-height: 42rpx;
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      }
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      .price-text {
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        font-size: 30rpx;
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        font-weight: 500;
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        color: $red;
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        font-family: OPPOSANS;
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        &::before {
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          content: '¥';
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          font-size: 24rpx;
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        }
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      }
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      .stock-text {
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        font-size: 26rpx;
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        color: #999999;
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      }
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    }
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    .modal-content {
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      padding: 0 20rpx;
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      .modal-content-scroll {
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        max-height: 600rpx;
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        .label-text {
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          font-size: 26rpx;
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          font-weight: 500;
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        }
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        .buy-num-box {
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          height: 100rpx;
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        }
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        .spec-btn {
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          height: 60rpx;
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          min-width: 100rpx;
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          padding: 0 30rpx;
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          background: #f4f4f4;
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          border-radius: 30rpx;
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          color: #434343;
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          font-size: 26rpx;
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          margin-right: 10rpx;
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          margin-bottom: 10rpx;
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        }
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        .checked-btn {
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          background: linear-gradient(90deg, #ff5854, #ff2621);
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          font-weight: 500;
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          color: #ffffff;
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        }
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        .disabled-btn {
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          font-weight: 400;
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          color: #c6c6c6;
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          background: #f8f8f8;
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        }
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      }
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    }
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  }
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  .tig {
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    border: 2rpx solid #ff5854;
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    border-radius: 4rpx;
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    width: 126rpx;
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    height: 38rpx;
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    .tig-icon {
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      width: 40rpx;
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      height: 40rpx;
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      background: #ff5854;
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      border-radius: 4rpx 0 0 4rpx;
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      .cicon-alarm {
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        font-size: 32rpx;
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        color: #fff;
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      }
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    }
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    .tig-title {
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      font-size: 24rpx;
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      font-weight: 500;
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      line-height: normal;
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      color: #ff6000;
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      width: 86rpx;
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      display: flex;
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      justify-content: center;
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      align-items: center;
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    }
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  }
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</style>
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