<template>
  <div class="shop-page">
    <!-- 导航栏 -->
    <nav class="navbar">
      <!-- 移除 nav-left 部分 -->
      <div class="nav-center">
        <h1 class="nav-title">积分商城</h1>
      </div>
      <div class="nav-right">
        <el-button 
          type="text" 
          @click="$router.push('#')"
          class="points-btn"
        >
          <el-icon><Coin /></el-icon>
          {{ userPoints }}
        </el-button>
      </div>
    </nav>

    <!-- 搜索栏 -->
    <div class="search-section">
      <el-input
        v-model="searchKeyword"
        placeholder="搜索商品"
        class="search-input"
        @input="handleSearch"
      >
        <template #prefix>
          <el-icon><Search /></el-icon>
        </template>
      </el-input>
    </div>

    <!-- 分类筛选 -->
    <div class="category-section">
      <el-scrollbar>
        <div class="category-list">
          <div 
            v-for="category in categories" 
            :key="category.id"
            :class="['category-item', { active: selectedCategory === category.id }]"
            @click="selectCategory(category.id)"
          >
            <el-icon>{{ category.icon }}</el-icon>
            <div class="category-name">{{ category.name }}</div>
          </div>
        </div>
      </el-scrollbar>
    </div>

    <!-- 推荐 -->
    <div class="recommend">
      <!-- 热销推荐 -->
      <div class="recommend-grid">
        <div class="recommend-title">热销推荐</div>
        <div v-for="(product, index) in hotProducts" :key="index" class="recommend-product" @click="goToProduct(product.id)">
          <div class="recommend-image">
            <img :src="product.image" :alt="product.name" />
            <div v-if="product.discount" class="recommend-discount">
              {{ product.discount }}折
            </div>
          </div>
          <div class="recommend-content">
            <h4 class="recommend-name">{{ product.name }}</h4>
            <div class="recommend-price-container">
              <div class="main-price">
                <img :src="getImageUrl('/imgs/profile/融豆.png')" alt="融豆" class="rongdou-icon" />
                <span class="rongdou-price">{{ product.rongdou_price }}</span>
              </div>
              <div class="sub-price">
                <el-icon class="points-icon"><Coin /></el-icon>
                <span class="points-price">{{ product.points_price }}</span>
              </div>
            </div>
          </div>
        </div>
      </div>
      
      <!-- 秒杀推荐 -->
      <div class="recommend-grid">
        <div class="recommend-title">秒杀推荐</div>
        <div v-for="(product, index) in cheapProducts" :key="index" class="recommend-product" @click="goToProduct(product.id)">
          <div class="recommend-image">
            <img :src="product.image" :alt="product.name" />
            <div v-if="product.discount" class="recommend-discount">
              {{ product.discount }}折
            </div>
          </div>
          <div class="recommend-content">
            <h4 class="recommend-name">{{ product.name }}</h4>
            <div class="recommend-price-container">
              <div class="main-price">
                <img :src="getImageUrl('/imgs/profile/融豆.png')" alt="融豆" class="rongdou-icon" />
                <span class="rongdou-price">{{ product.rongdou_price }}</span>
              </div>
              <div class="sub-price">
                <el-icon class="points-icon"><Coin /></el-icon>
                <span class="points-price">{{ product.points_price }}</span>
              </div>
            </div>
          </div>
        </div>
      </div>
    </div>

    <!-- 商品列表 -->
    <div class="products-section">
      <div class="section-header">
        <h3>热门商品</h3>
        <el-dropdown @command="handleSort">
          <span class="sort-btn">
            {{ sortText }}
            <el-icon><ArrowDown /></el-icon>
          </span>
          <template #dropdown>
            <el-dropdown-menu>
              <el-dropdown-item command="default">默认排序</el-dropdown-item>
              <el-dropdown-item command="price_asc">价格从低到高</el-dropdown-item>
              <el-dropdown-item command="price_desc">价格从高到低</el-dropdown-item>
              <el-dropdown-item command="sales">销量优先</el-dropdown-item>
            </el-dropdown-menu>
          </template>
        </el-dropdown>
      </div>

      <div v-loading="loading" class="products-grid">
        <div 
          v-for="product in filteredProducts" 
          :key="product.id"
          class="product-card"
          @click="goToProduct(product.id)"
        >
          <div class="product-image">
            <img :src="product.image" :alt="product.name" />
            <div v-if="product.discount" class="discount-badge">
              {{ product.discount }}折
            </div>
          </div>
          <h4 class="product-name">{{ product.name }}</h4>
          <div class="product-price">
            <div class="main-price">
              <img :src="getImageUrl('/imgs/profile/融豆.png')" alt="融豆" class="rongdou-icon" />
              <span class="rongdou-price">{{ product.rongdou_price }}</span>
            </div>
            <div class="sub-price">
              <el-icon class="points-icon"><Coin /></el-icon>
              <span class="points-price">{{ product.points_price }}</span>
            </div>
          </div>
        </div>
      </div>

      <!-- 空状态 -->
      <div v-if="!loading && filteredProducts.length === 0" class="empty-state">
        <el-icon size="60"><Box /></el-icon>
        <p>暂无商品</p>
      </div>

      <!-- 加载更多 -->
      <div v-if="hasMore" class="load-more">
        <el-button @click="loadMore" :loading="loadingMore">
          加载更多
        </el-button>
      </div>
    </div>


  </div>
</template>

<script setup>
import { ref, reactive, computed, onMounted } from 'vue'
import { useRouter, useRoute } from 'vue-router'
import { useUserStore } from '@/stores/user'
import { ElMessage, ElMessageBox } from 'element-plus'
import { 
  ArrowLeft,
  Coin,
  Search,
  ArrowDown,
  Box
} from '@element-plus/icons-vue'
import api from '@/utils/api'
import { debounce } from 'lodash-es'
import { getImageUrl } from '@/config'

const router = useRouter()
const route = useRoute()
const userStore = useUserStore()

// 响应式数据
const loading = ref(false)
const loadingMore = ref(false)
const searchKeyword = ref('')
const selectedCategory = ref('all')
const sortBy = ref('default')
const products = ref([])
const page = ref(1)
const hasMore = ref(true)


// 用户积分
const userPoints = ref(0)

// 分类数据
const categories = ref([
  { id: 'all', name: '全部', icon: '🛍️' },
  { id: '数码产品', name: '电子数码', icon: '📱' },
  { id: '图书文具', name: '图书文具', icon: '📚' },
  { id: '生活用品', name: '日用百货', icon: '🏠' },
  { id: '食品饮料', name: '食品饮料', icon: '🍔' },
  { id: '服装配饰', name: '精美服饰', icon: '👕' },
  { id: '其他', name: '其他', icon: '📦' }
])

//热销商品数据
const hotProducts = ref([
  { id: '6', name: '1', discount: '100', points: '9999', originalPoints:'999999' },
  { id: '6', name: '2', discount: '100', points: '9999', originalPoints:'999999' }
])

//秒杀推荐数据
const cheapProducts = ref([
  { id: '6', name: '1', discount: '100', points: '9999', originalPoints:'999999' },
  { id: '6', name: '2', discount: '100', points: '9999', originalPoints:'999999' }
])

// 计算属性
const filteredProducts = computed(() => {
  let result = products.value
  
  // 分类筛选
  if (selectedCategory.value !== 'all') {
    result = result.filter(p => p.category === selectedCategory.value)
  }
  
  // 搜索筛选
  if (searchKeyword.value) {
    result = result.filter(p => 
      p.name.toLowerCase().includes(searchKeyword.value.toLowerCase()) ||
      p.description.toLowerCase().includes(searchKeyword.value.toLowerCase())
    )
  }
  
  // 排序
  switch (sortBy.value) {
    case 'price_asc':
      result.sort((a, b) => a.points - b.points)
      break
    case 'price_desc':
      result.sort((a, b) => b.points - a.points)
      break
    case 'sales':
      result.sort((a, b) => b.sales - a.sales)
      break
  }
  
  return result
})

const sortText = computed(() => {
  const sortMap = {
    default: '默认排序',
    price_asc: '价格从低到高',
    price_desc: '价格从高到低',
    sales: '销量优先'
  }
  return sortMap[sortBy.value]
})



// 方法
const selectCategory = (categoryId) => {
  selectedCategory.value = categoryId
}

const handleSort = (command) => {
  sortBy.value = command
}

const handleSearch = debounce(() => {
  // 搜索逻辑已在计算属性中处理
}, 300)

const goToProduct = (productId) => {
  router.push(`/productsummary/${productId}`)
}

const getProducts = async (isLoadMore = false) => {
  try {
    if (!isLoadMore) {
      loading.value = true
      page.value = 1
    } else {
      loadingMore.value = true
    }
    
    const {data} = await api.get('/products', {
      params: {
        page: page.value,
        limit: 20,
        category: selectedCategory.value === 'all' ? '' : selectedCategory.value,
        keyword: searchKeyword.value,
        sort: sortBy.value
      }
    })
    console.log(data,'response');
    
    if (isLoadMore) {
      const newProducts = data.data.products
      // 处理新加载商品图片路径
      newProducts.forEach(product => {
        if (product.image) {
          product.image = getImageUrl(product.image)
        }
      })
      products.value.push(...newProducts)
    } else {
      products.value = data.data.products
      // 处理商品图片路径
      products.value.forEach(product => {
        if (product.image) {
          product.image = getImageUrl(product.image)
        }
      })
    }
    
    hasMore.value = data.data.hasMore
    page.value++
  } catch (error) {
    ElMessage.error('获取商品列表失败')
  } finally {
    loading.value = false
    loadingMore.value = false
  }
}

const loadMore = () => {
  getProducts(true)
}

const getUserPoints = async () => {
  try {
    const {data} = await api.get('/user/points')
    console.log(data,'points');
    
    userPoints.value = data.points
  } catch (error) {
    console.error('获取用户积分失败:', error)
  }
}

const truncateText = (text, maxLength) => {
  if (text.length <= maxLength) return text
  return text.substring(0, maxLength) + '...'
}

//获取热销推荐商品
const getHotProducts = async () => {
  try {
    const {data} = await api.get('/products/hot')
    hotProducts.value = data.data.products
    // 处理热销商品图片路径
    hotProducts.value.forEach(product => {
      if (product.image) {
        product.image = getImageUrl(product.image)
      }
    })
  } catch (error) {
    console.log(error)
  } finally {
    console.log('热销：',hotProducts)
  }
}

//获取秒杀推荐商品
const getCheapProducts = async () => {
  try {
    const {data} = await api.get('/products/cheap')
    cheapProducts.value = data.data.products
    // 处理秒杀商品图片路径
    cheapProducts.value.forEach(product => {
      if (product.image) {
        product.image = getImageUrl(product.image)
      }
    })
  } catch (error) {
    console.log(error)
  } finally {
    console.log('秒杀：',cheapProducts)
  }
}

// 生命周期
onMounted(() => {
  // 检查URL参数中是否有分类
  const categoryFromQuery = route.query.category
  if (categoryFromQuery && categories.value.some(cat => cat.id === categoryFromQuery)) {
    selectedCategory.value = categoryFromQuery
  }
  
  getProducts()
  getUserPoints()
  getHotProducts()
  getCheapProducts()
})
</script>

<style scoped>
.shop-page {
  min-height: 100vh;
  background: linear-gradient(to bottom, #ffae00, #f3f3f3);
}

/* 导航栏保持白色背景 */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  height: 56px;
  background: white;
  border-bottom: 1px solid #eee;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-center {
  position: absolute;
  left: 0;
  right: 0;
  text-align: center;
  pointer-events: none; /* 允许点击穿透到下方元素 */
}

.nav-title {
  margin: 0 auto;
  font-size: 18px;
  font-weight: 500;
  color: #333;
  display: inline-block; /* 使文本能够真正居中 */
}

.nav-right {
  margin-left: auto; /* 将积分按钮推到最右侧 */
}

.back-btn,
.points-btn {
  color: #409eff;
  font-size: 14px;
}

/* 搜索栏参与渐变 */
.search-section {
  padding: 16px;
  background: transparent;
  border-bottom: none;
}

.search-input {
  width: 100%;
}

.search-input :deep(.el-input__wrapper) {
  border-radius: 1000px;
  background-color: rgba(255,255,255,0.8);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* 分类筛选参与渐变 */
.category-section {
  background: transparent;
  padding: 16px 0;
  border-bottom: none;
}

.category-list {
  display: flex;
  gap: 16px;
  padding: 0 16px;
  white-space: nowrap;
}

.category-item {
  display: flex;
  flex-direction: column;
  align-items: center; /* 使子元素水平居中 */
  justify-content: center; /* 使子元素垂直居中 */
  gap: 4px;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
  min-width: 60px;
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.category-name {
  font-size: 12px;
  /* 移除以下三个属性，取消文本省略效果 */
  /* white-space: nowrap; */
  /* overflow: hidden; */
  /* text-overflow: ellipsis; */
  max-width: 100%;
  text-align: center;
  width: 100%;
  display: block;
}

.category-item:hover {
  background: rgba(240,249,255,0.9);
}

.category-item.active {
  background: rgba(64,158,255,0.9);
  color: white;
}

.category-item span {
  font-size: 12px;
}

/* 商品列表参与渐变 */
.products-section {
  padding: 16px;
  background: transparent;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.section-header h3 {
  margin: 0;
  font-size: 16px;
  color: #333;
  text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.sort-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  color: #666;
  font-size: 14px;
  cursor: pointer;
  text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.product-card {
  width: 163px;
  height: 217px;
  background: rgba(255,255,255,0.9);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(2px);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.15);
}

.product-image {
  position: relative;
  width: 100%;
  height: 163px;
  overflow: hidden;
  flex-shrink: 0;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.discount-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  background: #ff4757;
  color: white;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
}

.product-name {
  margin: 8px 8px 4px;
  font-size: 14px;
  font-weight: 500;
  color: #333;
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.product-price {
  margin: 0 8px;
  padding-bottom: 8px;
  position: relative;
}

.main-price {
  display: flex;
  align-items: center;
  gap: 4px;
}

.rongdou-icon {
  width: 16px;
  height: 16px;
  object-fit: contain;
}

.rongdou-price {
  color: #ff6b35;
  font-weight: bold;
  font-size: 16px;
}

.sub-price {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-top: 4px;
}

.points-icon {
  font-size: 10px;
  width: 10px;
  height: 10px;
}

.points-price {
  color: #999;
  font-size: 10px;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: #999;
}

.load-more {
  text-align: center;
  padding: 20px;
}



/* 响应式设计 */
@media (max-width: 480px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    justify-items: center;
  }
  
  .product-card {
    width: calc(50vw - 24px);
    max-width: 163px;
  }
}

/* 推荐 */
.recommend {
  display: flex;
  justify-content: space-between;
  padding: 16px;
  margin: 16px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

.recommend-grid {
  flex: 1;
  margin: 0 8px;
}

.recommend-product {
  display: flex;
  align-items: center;
  width: 144px;
  height: 54px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 8px;
  padding: 6px;
  margin-bottom: 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.recommend-product:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
}

.recommend-image {
  position: relative;
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  margin-right: 8px;
  border-radius: 6px;
  overflow: hidden;
}

.recommend-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.recommend-discount {
  position: absolute;
  top: 2px;
  right: 2px;
  background: #ff4757;
  color: white;
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 10px;
  line-height: 1;
}

.recommend-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

.recommend-name {
  margin: 0;
  font-size: 12px;
  font-weight: 500;
  color: #333;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 3px;
}

.recommend-price-container {
  position: relative;
}

.recommend-price-container .main-price {
  display: flex;
  align-items: center;
  gap: 2px;
}

.recommend-price-container .rongdou-icon {
  width: 12px;
  height: 12px;
  object-fit: contain;
}

.recommend-price-container .rongdou-price {
  color: #ff6b35;
  font-weight: 600;
  font-size: 12px;
  line-height: 1;
}

.recommend-price-container .sub-price {
  display: flex;
  align-items: center;
  gap: 1px;
  margin-top: 2px;
}

.recommend-price-container .points-icon {
  font-size: 8px;
  width: 8px;
  height: 8px;
}

.recommend-price-container .points-price {
  color: #999;
  font-size: 8px;
  line-height: 1;
}

</style>