<!-- 基础按钮组件 -->
<template>
  <view 
    class="base-button"
    :class="[type, size, { disabled }]"
    :style="customStyle"
    @click="handleClick"
  >
    <slot></slot>
  </view>
</template>

<script>
export default {
  name: 'BaseButton',
  props: {
    type: {
      type: String,
      default: 'default'
    },
    size: {
      type: String,
      default: 'medium'
    },
    disabled: {
      type: Boolean,
      default: false
    },
    customStyle: {
      type: Object,
      default: () => ({})
    }
  },
  methods: {
    handleClick() {
      if (!this.disabled) {
        this.$emit('click');
      }
    }
  }
}
</script>

<style lang="scss" scoped>
.base-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  height: 40px;
  border-radius: 4px;
  font-size: 14px;
  
  &.primary {
    background-color: #007AFF;
    color: #FFFFFF;
  }
  
  &.disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }
}
</style>

<!-- 商品卡片组件 -->
<template>
  <view class="product-card">
    <image 
      class="product-image"
      :src="product.image"
      mode="aspectFill"
      @load="handleImageLoad"
    />
    <view class="product-info">
      <text class="product-name">{{ product.name }}</text>
      <text class="product-price">¥{{ product.price }}</text>
      <view class="product-actions">
        <base-button 
          type="primary"
          size="small"
          @click="handleAddToCart"
        >
          加入购物车
        </base-button>
      </view>
    </view>
  </view>
</template>

<script>
import BaseButton from './base-button.vue'

export default {
  name: 'ProductCard',
  components: {
    BaseButton
  },
  props: {
    product: {
      type: Object,
      required: true
    }
  },
  methods: {
    handleImageLoad() {
      this.$emit('image-load');
    },
    handleAddToCart() {
      this.$emit('add-to-cart', this.product);
    }
  }
}
</script>

<style lang="scss" scoped>
.product-card {
  background: #FFFFFF;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  
  .product-image {
    width: 100%;
    height: 200px;
  }
  
  .product-info {
    padding: 12px;
    
    .product-name {
      font-size: 16px;
      color: #333333;
      margin-bottom: 8px;
    }
    
    .product-price {
      font-size: 18px;
      color: #FF4D4F;
      font-weight: bold;
    }
    
    .product-actions {
      margin-top: 12px;
    }
  }
}
</style>

<!-- 列表加载组件 -->
<template>
  <view class="list-container">
    <scroll-view 
      class="list-scroll"
      :scroll-y="true"
      @scrolltolower="handleLoadMore"
      :refresher-enabled="true"
      @refresherrefresh="handleRefresh"
    >
      <slot></slot>
      <view v-if="loading" class="loading">
        <text>加载中...</text>
      </view>
      <view v-if="noMore" class="no-more">
        <text>没有更多了</text>
      </view>
    </scroll-view>
  </view>
</template>

<script>
export default {
  name: 'ListLoader',
  props: {
    loading: {
      type: Boolean,
      default: false
    },
    noMore: {
      type: Boolean,
      default: false
    }
  },
  methods: {
    handleLoadMore() {
      if (!this.loading && !this.noMore) {
        this.$emit('load-more');
      }
    },
    handleRefresh() {
      this.$emit('refresh');
    }
  }
}
</script>

<style lang="scss" scoped>
.list-container {
  height: 100%;
  
  .list-scroll {
    height: 100%;
  }
  
  .loading, .no-more {
    padding: 12px;
    text-align: center;
    color: #999999;
  }
}
</style>