hjc-web/app/templates/template-03/pages/CaseList.vue

<template>
  <div class="min-h-screen py-16 bg-[#faf6ef]">
    <div class="container mx-auto px-4 sm:px-6 lg:px-8">
      <div class="text-center mb-12">
        <span class="inline-block px-3 py-1 rounded-full bg-[#f0e6d8] text-[#8b6f47] text-sm font-semibold mb-4">{{ pageTitle }}</span>
        <h1 class="text-3xl font-bold text-[#4a3f35] mb-4">{{ pageTitle }}</h1>
        <p class="text-[#8a7d6b] max-w-2xl mx-auto">展示我们的成功案例与行业经验</p>
      </div>

      <div v-if="pending" class="flex justify-center py-12">
        <SiteLoading />
      </div>
      <SiteError v-else-if="error" message="获取案例列表失败" />

      <div v-else class="grid sm:grid-cols-2 lg:grid-cols-3 gap-6">
        <article
          v-for="item in cases"
          :key="item.id"
          class="group bg-white rounded-3xl overflow-hidden shadow-sm hover:shadow-md transition-shadow border border-[#e8e0d4]"
        >
          <NuxtLink :to="`/case/${item.id}`" class="block">
            <div class="aspect-[4/3] bg-[#f3ebde] overflow-hidden">
              <img
                v-if="item.cover"
                :src="fileUrl(item.cover)"
                :alt="item.title"
                class="w-full h-full object-cover group-hover:scale-105 transition-transform duration-500"
              >
              <span v-else class="flex items-center justify-center h-full text-[#b9a892]">暂无图片</span>
            </div>
            <div class="p-5">
              <h2 class="text-lg font-semibold text-[#4a3f35] mb-2 group-hover:text-[#8b6f47] transition-colors">
                {{ item.title }}
              </h2>
              <p class="text-sm text-[#8a7d6b] line-clamp-2">{{ stripHtml(item.summary) }}</p>
              <div v-if="item.clientName" class="mt-3 text-xs text-[#8a7d6b]">
                客户：{{ item.clientName }}
              </div>
            </div>
          </NuxtLink>
        </article>
      </div>

      <!-- 空状态 -->
      <div v-if="!pending && !error && cases.length === 0" class="text-center py-20">
        <svg class="w-16 h-16 mx-auto text-[#e2d6c4] mb-4" fill="none" viewBox="0 0 24 24" stroke="currentColor">
          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10" />
        </svg>
        <p class="text-[#8a7d6b]">暂无案例内容</p>
      </div>

      <!-- 分页 -->
      <div v-if="totalPages > 1" class="flex justify-center mt-12">
        <nav class="flex items-center gap-2">
          <button
            v-for="p in totalPages"
            :key="p"
            class="px-4 py-2 text-sm rounded-lg transition-colors"
            :class="p === currentPage ? 'bg-[#8b6f47] text-white' : 'bg-white text-[#4a3f35] hover:bg-[#f0e6d8]'"
            @click="currentPage = p"
          >
            {{ p }}
          </button>
        </nav>
      </div>
    </div>
  </div>
</template>

<script setup lang="ts">
import type { CaseItem, PageResult } from '~/types'
import { collectDescendantNavIds } from '~/utils/nav-tree'

/**
 * 模板 3 - 案例列表页（暖米轻商风）
 */
const { fileUrl } = useFileUrl()
const route = useRoute()
const { allNavigations, fetchSiteInfo } = useSite()

// 确保导航数据已加载（用于栏目标题与分类判定）
await fetchSiteInfo()

// 列表（栏目）入口 /case/{navigationId} 时按分类过滤；/case 根目录展示全部案例
const navigationId = computed<number | undefined>(() => {
  const id = route.params.id
  return id ? Number(id) : undefined
})

// 聚合：父栏目访问时递归收集自身 + 所有后代栏目 navigationId，交给后端 IN 查询
const categoryIds = computed<string | undefined>(() => {
  const ids = collectDescendantNavIds(navigationId.value, allNavigations.value || [])
  return ids.length ? ids.join(',') : undefined
})

const currentPage = ref(1)
const limit = 12

const { data, pending, error } = await useFetch<PageResult<CaseItem>>('/api/case/list', {
  key: `case-list-${categoryIds.value ?? navigationId.value ?? 'all'}-p${currentPage.value}`,
  query: {
    page: currentPage,
    limit,
    ...(categoryIds.value
      ? { categoryIds: categoryIds.value }
      : (navigationId.value ? { navigationId: navigationId.value } : {}))
  },
  watch: [currentPage, categoryIds, navigationId]
})

const cases = computed(() => data.value?.list || [])

const totalCount = computed(() => data.value?.count ?? 0)
const totalPages = computed(() => Math.max(1, Math.ceil(totalCount.value / limit)))

// 切换栏目时回到第 1 页
watch([categoryIds, navigationId], () => {
  currentPage.value = 1
})

// 栏目标题：命中导航取导航标题，否则用模块默认名
const pageTitle = computed(() => {
  const id = navigationId.value
  if (id == null) return '案例展示'
  const navs = (allNavigations.value || []) as any[]
  const find = (items: any[]): any => {
    for (const it of items) {
      if (it.navigationId === id) return it
      if (it.children?.length) {
        const f = find(it.children)
        if (f) return f
      }
    }
    return undefined
  }
  return find(navs)?.title || '案例展示'
})

</script>