hjc-web/app/templates/template-05/pages/NewsList.vue

<template>
  <div class="min-h-screen py-16 bg-[#FFF8F0]">
    <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-[#FEF3DA] text-[#F2A900] text-sm font-semibold mb-4">品牌动态</span>
        <h1 class="text-3xl font-bold text-[#33291F] mb-4">{{ pageTitle }}</h1>
        <p class="text-[#8A7B6B] max-w-2xl mx-auto">了解品牌最新动态与行业资讯</p>
      </div>

      <div v-if="pending" class="flex justify-center py-12">
        <SiteLoading />
      </div>
      <div v-else-if="error" class="text-center py-12">
        <SiteError message="获取新闻列表失败" />
      </div>

      <template v-else>
        <div v-if="articles.length > 0" class="grid md:grid-cols-2 lg:grid-cols-3 gap-6">
          <article
            v-for="item in articles"
            :key="item.id || item.articleId"
            class="bg-white rounded-3xl overflow-hidden shadow-sm hover:shadow-md transition-shadow border border-[#F0E2D5]"
          >
            <NuxtLink :to="`/article/${item.id || item.articleId}`">
              <div class="aspect-video bg-[#FFF1E6] flex items-center justify-center overflow-hidden">
                <img
                  v-if="item.image || item.cover || item.photo"
                  :src="fileUrl(item.image || item.cover || item.photo || '')"
                  :alt="item.title"
                  class="w-full h-full object-contain"
                >
                <span v-else class="text-[#C9B7A3]">暂无图片</span>
              </div>
            </NuxtLink>
            <div class="p-5">
              <div class="text-xs text-[#8A7B6B] mb-2">
                {{ formatDate(item.publishTime || item.createTime) }}
                <span v-if="item.categoryName" class="ml-2 text-[#E5472E]">{{ item.categoryName }}</span>
              </div>
              <h2 class="text-lg font-semibold text-[#33291F] mb-2 line-clamp-2 hover:text-[#E5472E] transition-colors">
                <NuxtLink :to="`/article/${item.id || item.articleId}`">{{ item.title }}</NuxtLink>
              </h2>
              <p class="text-sm text-[#8A7B6B] line-clamp-2">{{ stripHtml(item.summary) }}</p>
            </div>
          </article>
        </div>

        <!-- 空状态 -->
        <div v-else class="text-center py-20">
          <svg class="w-16 h-16 mx-auto text-[#E9DAC9] mb-4" fill="none" viewBox="0 0 24 24" stroke="currentColor">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M19 20H5a2 2 0 01-2-2V6a2 2 0 012-2h10a2 2 0 012 2v1m2 13a2 2 0 01-2-2V7m2 13a2 2 0 002-2V9a2 2 0 00-2-2h-2m-4-3H9M7 16h6M7 8h6v4H7V8z" />
          </svg>
          <p class="text-[#8A7B6B]">暂无新闻内容</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="w-10 h-10 text-sm rounded-full transition-colors"
              :class="p === currentPage
                ? 'bg-[#E5472E] text-white'
                : 'bg-white text-[#33291F] border border-[#F0E2D5] hover:bg-[#FFF1E6]'"
              @click="currentPage = p"
            >
              {{ p }}
            </button>
          </nav>
        </div>
      </template>
    </div>
  </div>
</template>

<script setup lang="ts">
/**
 * 模板 5 - 新闻列表页（温暖自然食品风）
 */
import dayjs from 'dayjs'
import type { Article, PageResult, ApiEnvelope, CmsNavigation } from '~/types'
import { collectDescendantNavIds } from '~/utils/nav-tree'

const { allNavigations, fetchSiteInfo } = useSite()
const { fileUrl } = useFileUrl()
const route = useRoute()

await fetchSiteInfo()

/** 从路由参数、查询参数或导航中获取栏目 navigationId
 *
 * 优先级（2026-07-21 修正）：
 *   1. route.query.navId（查询参数 ?navId=xxx，优先——导航子分类下拉切换时通过此方式传入，
 *      必须高于 route.params.id，否则 /article/4277?navId=4278 会因 params.id=4277 先命中而忽略 navId）
 *   2. route.params.id（路由参数 /article/:navigationId）
 *   3. navigations 中 model=article 的第一个栏目（兜底）
 */
const navigationId = computed<number | undefined>(() => {
  // 1. 查询参数优先（导航子分类下拉切换时传入）
  const queryNavId = route.query.navId as string
  if (queryNavId) {
    const num = Number(queryNavId)
    if (!Number.isNaN(num)) return num
  }
  // 2. 路由参数
  const routeId = route.params.id as string
  if (routeId) {
    const num = Number(routeId)
    if (!Number.isNaN(num)) return num
  }
  // 3. 兜底：从 navigations 中查找 model=article 的导航
  const navs = allNavigations.value || []
  const nav = navs.find((n) => n.model === 'article' || (n.path || '').split('/').filter(Boolean)[0] === 'article')
  return nav?.navigationId
})

/** 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
})

/** 页面标题 */
const pageTitle = computed(() => {
  const navs = allNavigations.value || []
  const findNav = (items: CmsNavigation[]): CmsNavigation | undefined => {
    for (const item of items) {
      if (item.navigationId === navigationId.value) return item
      if (item.children?.length) {
        const found = findNav(item.children)
        if (found) return found
      }
    }
    return undefined
  }
  if (keywords.value) return `搜索："${keywords.value}"`
  return findNav(navs)?.title || '新闻资讯'
})

/** 搜索关键词（来自 Header 搜索框提交的 ?keywords=） */
const keywords = computed(() => ((route.query.keywords as string) || '').trim())

const currentPage = ref(1)
const limit = 12

// 响应式 query + watch 选项触发翻页/换栏目的重新请求；
// key 带页码，保证每一页独立缓存、翻页必然重新拉取（避免共用 key 被缓存返回第 1 页）。
// keywords 变化时同样触发重新请求，关键词搜索忽略栏目、全局检索。
const { data, pending, error } = await useFetch<
  ApiEnvelope<PageResult<Article>> | PageResult<Article>
>('/api/article/list', {
  key: `news-list-${keywords.value || 'all'}-${categoryIds.value ?? navigationId.value ?? 'default'}-p${currentPage.value}`,
  query: {
    categoryIds: keywords.value ? undefined : categoryIds.value,
    keywords: keywords.value || undefined,
    page: currentPage,
    limit
  },
  watch: [currentPage, navigationId, categoryIds, keywords]
})

const articles = computed<Article[]>(() => {
  const envelope = data.value as ApiEnvelope<PageResult<Article>>
  const direct = data.value as PageResult<Article>
  return envelope?.data?.list || direct?.list || []
})

const totalCount = computed(() => {
  const envelope = data.value as ApiEnvelope<PageResult<Article>>
  const direct = data.value as PageResult<Article>
  return envelope?.data?.count || envelope?.data?.total || direct?.count || direct?.total || 0
})

const totalPages = computed(() => {
  return Math.ceil(totalCount.value / limit)
})

// 栏目切换 / 关键词变化时回到第 1 页（watch 选项已负责重新请求）
watch([navigationId, keywords], () => {
  currentPage.value = 1
})

function formatDate(date?: string) {
  if (!date) return ''
  return dayjs(date).format('YYYY-MM-DD')
}
</script>