campusIdleItemTradingPlatformUI/src/view/Home.vue

<template>
  <div class="home">
    <div class="search-bar">
      <el-input
        v-model="keyword"
        placeholder="搜索闲置物品"
        :prefix-icon="Search"
        size="large"
        clearable
        @keyup.enter="onSearch"
      />
    </div>

    <el-tabs v-model="activeCategory" class="category-tabs" @tab-change="onCategoryChange">
      <el-tab-pane label="全部" name="" />
      <el-tab-pane v-for="cat in categories" :key="cat.id" :label="cat.name" :name="String(cat.id)" />
    </el-tabs>

    <el-row :gutter="12" class="item-grid">
      <el-col
        v-for="item in itemList"
        :key="item.id"
        :xs="24"
        :sm="12"
        :md="8"
        :lg="6"
        class="item-col"
      >
        <el-card :body-style="{ padding: '0px' }" shadow="hover" class="item-card" @click="goDetail(item.id)">
          <el-image
            :src="item.images?.[0]"
            fit="cover"
            class="item-image"
          >
            <template #error>
              <div class="image-placeholder">
                <el-icon :size="32"><Picture /></el-icon>
              </div>
            </template>
          </el-image>
          <div class="item-info">
            <h4 class="item-title">{{ item.title }}</h4>
            <div class="item-meta">
              <span class="price">¥{{ item.price }}</span>
              <span class="seller">{{ item.sellerNickname }}</span>
            </div>
          </div>
        </el-card>
      </el-col>
    </el-row>

    <div v-if="loading" class="loading-skeleton">
      <el-skeleton :rows="3" animated />
    </div>

    <div v-if="!loading && itemList.length === 0" class="empty-state">
      <el-empty description="暂无物品" />
    </div>

    <el-pagination
      v-if="total > pageSize"
      v-model:current-page="pageNum"
      :total="total"
      :page-size="pageSize"
      layout="prev, pager, next"
      class="pagination"
      @current-change="loadItems"
    />
  </div>
</template>

<script setup lang="ts">
import { ref, onMounted } from 'vue'
import { useRouter } from 'vue-router'
import { Search, Picture } from '@element-plus/icons-vue'
import { getItems } from '../api/endpoints/items'
import { getCategories } from '../api/endpoints/categories'
import type { ItemVO, Category } from '../api/models'

const router = useRouter()
const keyword = ref('')
const activeCategory = ref('')
const itemList = ref<ItemVO[]>([])
const categories = ref<Category[]>([])
const total = ref(0)
const pageNum = ref(1)
const pageSize = 10
const loading = ref(false)

const loadItems = async () => {
  loading.value = true
  try {
    const categoryId = activeCategory.value ? Number(activeCategory.value) : undefined
    const api = getItems()
    const params = { pageNum: pageNum.value, pageSize }
    const res = categoryId
      ? await api.byCategory(categoryId, params)
      : await api.list(params)
    if (res.code === 200) {
      itemList.value = res.data?.list ?? []
      total.value = res.data?.total ?? 0
    }
  } finally {
    loading.value = false
  }
}

const onSearch = () => {
  if (keyword.value.trim()) {
    router.push({ path: '/search', query: { keyword: keyword.value.trim() } })
  }
}

const onCategoryChange = () => {
  pageNum.value = 1
  loadItems()
}

const goDetail = (id?: number) => {
  if (id) router.push(`/item/${id}`)
}

onMounted(async () => {
  await loadItems()
  try {
    const res = await getCategories().list1()
    if (res.code === 200) {
      categories.value = res.data ?? []
    }
  } catch {
    // categories optional
  }
})
</script>

<style scoped>
.home {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}
.search-bar {
  margin-bottom: 20px;
}
.category-tabs {
  margin-bottom: 20px;
}
.item-grid {
  margin-bottom: 20px;
}
.item-col {
  margin-bottom: 12px;
}
.item-card {
  cursor: pointer;
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.2s;
}
.item-card:hover {
  transform: translateY(-2px);
}
.item-image {
  width: 100%;
  height: 180px;
  display: block;
}
.image-placeholder {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f5f7fa;
  color: #c0c4cc;
}
.item-info {
  padding: 12px;
}
.item-title {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.item-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.price {
  color: #f56c6c;
  font-size: 16px;
  font-weight: 600;
}
.seller {
  font-size: 12px;
  color: #909399;
}
.loading-skeleton {
  padding: 20px;
}
.empty-state {
  padding: 40px 0;
}
.pagination {
  display: flex;
  justify-content: center;
  padding: 20px 0;
}
</style>