<template>
  <view>
    <view class="product-window" :class="attr.cartAttr === true ? 'on' : ''">
      <view class="textpic acea-row row-between-wrapper">
        <view class="pictrue">
          <image @tap="previewImage" :src="attr.productSelect.image" class="image" />
        </view>
        <view class="text">
          <view class="line1">{{ attr.productSelect.store_name }}</view>
          <view class="money font-color-red">
            ￥
            <text class="num">{{ attr.productSelect.price }}</text>
            <text class="stock">库存: {{ attr.productSelect.stock }}</text>
          </view>
        </view>
        <view class="iconfont icon-guanbi" @click="closeAttr"></view>
      </view>
      <view class="productWinList">
        <view
          class="item"
          v-for="(item, indexw) in attr.productAttr"
          :key="indexw"
        >
          <view class="title">{{ item.attrName }}</view>
          <view class="listn acea-row row-middle">
            <view
              class="itemn"
              :class="item.index == indexn ? 'on' : ''"
              v-for="(itemn, indexn) in item.attrValue"
              @click="tapAttr(indexw, indexn)"
              :key="indexn"
              >{{ itemn.attr }}</view
            >
          </view>
        </view>
      </view>
      <view class="cart">
        <view class="title">数量</view>
        <view class="carnum acea-row row-left">
          <view
            class="item reduce"
            :class="cartNum <= 1 ? 'on' : ''"
            @click="CartNumDes"
            >-</view
          >
          <view class="item num">{{ cartNum }}</view>
          <view
            class="item plus"
            :class="cartNum >= attr.productSelect.stock ? 'on' : ''"
            @click="CartNumAdd"
            >+</view
          >
        </view>
      </view>
    </view>
    <view
      class="mask"
      @touchmove.prevent
      :hidden="attr.cartAttr === false"
      @click="closeAttr"
    ></view>
  </view>
</template>
<script>
export default {
  name: "ProductWindow",
  props: {
    attr: {
      type: Object,
      default: () => {},
    },
    cartNum: {
      type: Number,
      default: () => 1,
    },
  },
  data: function () {
    return {};
  },
  mounted: function () {
    console.log(this);
  },
  watch: {
    attr(nextAttr) {
    },
  },
  methods: {
    closeAttr: function () {
      this.$emit("changeFun", { action: "changeattr", value: false });
    },
    CartNumDes: function () {
      this.$emit("changeFun", { action: "ChangeCartNum", value: false });
    },
    CartNumAdd: function () {
      this.$emit("changeFun", { action: "ChangeCartNum", value: 1 });
    },
    tapAttr: function (indexw, indexn) {
      // 修改商品规格不生效的原因：
      // H5端下面写法，attr更新，但是除H5外其他端不支持，
      // 尽量避免下面的骚写法，不要在子组件内更新props
      // 这里修改是为了能获取到被选中的属性
      this.attr.productAttr[indexw].index = indexn;
      let that = this;
      let value = that.getCheckedValue().sort().join(",");
      that.$emit("changeFun", {
        action: "ChangeAttr",
        value: {
          value,
          indexw,
          indexn,
        },
      });
    },
    //获取被选中属性；
    getCheckedValue: function () {
      let productAttr = this.attr.productAttr;
      let value = [];
      for (let i = 0; i < productAttr.length; i++) {
        for (let j = 0; j < productAttr[i].attrValueArr.length; j++) {
          if (productAttr[i].index === j) {
            value.push(productAttr[i].attrValueArr[j]);
          }
        }
      }
      return value;
    },
    previewImage() {
      uni.previewImage({
        current: 0,
        urls: [this.attr.productSelect.image],
      });
    },
  },
};
</script>
