增加搜索推荐
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<template>
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<div class="artwork-recommendations">
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<div class="recommendations-header">
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<h3 class="recommendations-title">相关推荐</h3>
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<div class="recommendations-info" v-if="totalCount > 0">
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<span>共 {{ totalCount }} 个推荐作品</span>
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</div>
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</div>
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<div v-if="loading && artworks.length === 0" class="loading-section">
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<LoadingSpinner text="加载推荐中..." />
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</div>
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<div v-else-if="error && artworks.length === 0" class="error-section">
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<ErrorMessage :error="error" @dismiss="clearError" />
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</div>
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<div v-else-if="artworks.length > 0" class="recommendations-content">
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<div class="artworks-grid">
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<ArtworkCard v-for="artwork in artworks" :key="artwork.id" :artwork="artwork"
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@click="handleArtworkClick" />
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</div>
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<!-- 加载更多按钮 -->
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<div v-if="hasMore" class="load-more-section">
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<button @click="loadMore" class="load-more-btn" :disabled="loadingMore">
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{{ loadingMore ? '加载中...' : '加载更多' }}
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</button>
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</div>
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<!-- 没有更多内容提示 -->
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<div v-else-if="artworks.length > 0" class="no-more-section">
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<p>已加载全部推荐作品</p>
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</div>
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</div>
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<div v-else class="empty-section">
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<p>暂无相关推荐</p>
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</div>
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</div>
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</template>
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<script setup lang="ts">
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import { ref, computed, onMounted, watch } from 'vue';
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import { useRouter } from 'vue-router';
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import artworkService from '@/services/artwork';
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import type { Artwork } from '@/types';
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import ArtworkCard from '@/components/artwork/ArtworkCard.vue';
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import LoadingSpinner from '@/components/common/LoadingSpinner.vue';
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import ErrorMessage from '@/components/common/ErrorMessage.vue';
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interface Props {
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artworkId: number;
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}
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const props = defineProps<Props>();
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const router = useRouter();
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// 状态
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const artworks = ref<Artwork[]>([]);
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const loading = ref(false);
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const loadingMore = ref(false);
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const error = ref<string | null>(null);
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const nextUrl = ref<string | null>(null);
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const hasMore = ref(false);
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const totalCount = ref(0);
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// 缓存相关
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const cache = ref<Map<string, any>>(new Map());
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const cacheTimeout = ref<Map<string, number>>(new Map());
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const CACHE_DURATION = 5 * 60 * 1000; // 5分钟缓存
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// 缓存键生成
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const getCacheKey = (artworkId: number, isFirstPage: boolean = true) => {
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return `recommendations_${artworkId}_${isFirstPage ? 'first' : 'more'}`;
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};
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// 获取缓存
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const getCache = (key: string) => {
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const cached = cache.value.get(key);
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const timeout = cacheTimeout.value.get(key);
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if (cached && timeout && Date.now() < timeout) {
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return cached;
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}
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// 清除过期缓存
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if (cached) {
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cache.value.delete(key);
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cacheTimeout.value.delete(key);
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}
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return null;
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};
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// 设置缓存
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const setCache = (key: string, data: any) => {
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cache.value.set(key, data);
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cacheTimeout.value.set(key, Date.now() + CACHE_DURATION);
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};
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// 清除缓存
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const clearCache = () => {
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cache.value.clear();
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cacheTimeout.value.clear();
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};
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// 获取推荐作品
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const fetchRecommendations = async (isLoadMore = false) => {
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if (!props.artworkId) return;
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// 检查缓存（仅第一页）
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if (!isLoadMore) {
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const cacheKey = getCacheKey(props.artworkId, true);
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const cached = getCache(cacheKey);
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if (cached) {
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artworks.value = cached.artworks;
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nextUrl.value = cached.nextUrl;
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hasMore.value = cached.hasMore;
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totalCount.value = cached.totalCount;
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return;
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}
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}
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try {
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if (isLoadMore) {
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loadingMore.value = true;
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} else {
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loading.value = true;
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error.value = null;
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}
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const response = await artworkService.getRelatedArtworks(props.artworkId, {
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offset: isLoadMore ? artworks.value.length : 0,
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limit: 30
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});
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if (response.success && response.data) {
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if (isLoadMore) {
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// 追加到现有列表
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artworks.value.push(...response.data.artworks);
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} else {
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// 替换列表
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artworks.value = response.data.artworks;
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totalCount.value = response.data.total || response.data.artworks.length;
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}
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nextUrl.value = response.data.next_url || null;
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hasMore.value = !!response.data.next_url && response.data.artworks.length > 0;
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// 缓存第一页结果
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if (!isLoadMore) {
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const cacheKey = getCacheKey(props.artworkId, true);
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setCache(cacheKey, {
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artworks: response.data.artworks,
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nextUrl: nextUrl.value,
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hasMore: hasMore.value,
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totalCount: totalCount.value
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});
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}
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} else {
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throw new Error(response.error || '获取推荐作品失败');
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}
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} catch (err) {
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error.value = err instanceof Error ? err.message : '获取推荐作品失败';
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console.error('获取推荐作品失败:', err);
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} finally {
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if (isLoadMore) {
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loadingMore.value = false;
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} else {
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loading.value = false;
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}
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}
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};
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// 加载更多
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const loadMore = async () => {
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if (!hasMore.value || loadingMore.value) return;
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await fetchRecommendations(true);
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};
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// 处理作品点击
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const handleArtworkClick = (artwork: Artwork) => {
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// 在新标签页中打开
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const url = router.resolve({
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path: `/artwork/${artwork.id}`
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});
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window.open(url.href, '_blank');
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};
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// 清除错误
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const clearError = () => {
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error.value = null;
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};
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// 监听作品ID变化
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watch(() => props.artworkId, (newId, oldId) => {
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if (newId !== oldId) {
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// 清除状态
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artworks.value = [];
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nextUrl.value = null;
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hasMore.value = false;
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totalCount.value = 0;
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error.value = null;
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// 获取新的推荐
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if (newId) {
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fetchRecommendations();
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}
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}
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});
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onMounted(() => {
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if (props.artworkId) {
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fetchRecommendations();
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}
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});
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</script>
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<style scoped>
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.artwork-recommendations {
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background: white;
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border-radius: 1rem;
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padding: 2rem;
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box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
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}
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.recommendations-header {
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display: flex;
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justify-content: space-between;
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align-items: center;
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margin-bottom: 2rem;
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}
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.recommendations-title {
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font-size: 1.5rem;
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font-weight: 600;
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color: #1f2937;
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margin: 0;
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}
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.recommendations-info {
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color: #6b7280;
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font-size: 0.875rem;
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}
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.loading-section,
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.error-section,
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.empty-section {
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display: flex;
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justify-content: center;
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align-items: center;
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min-height: 200px;
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color: #6b7280;
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}
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.artworks-grid {
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display: grid;
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grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
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gap: 2rem;
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margin-bottom: 2rem;
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}
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.load-more-section {
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display: flex;
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justify-content: center;
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margin-bottom: 1rem;
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}
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.load-more-btn {
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padding: 0.75rem 2rem;
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border: 1px solid #d1d5db;
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border-radius: 0.5rem;
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background: white;
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color: #374151;
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font-weight: 500;
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cursor: pointer;
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transition: all 0.2s;
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font-size: 1rem;
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}
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.load-more-btn:hover:not(:disabled) {
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background: #f3f4f6;
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border-color: #9ca3af;
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transform: translateY(-1px);
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}
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.load-more-btn:disabled {
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opacity: 0.6;
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cursor: not-allowed;
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transform: none;
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}
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.no-more-section {
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text-align: center;
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padding: 2rem 0;
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color: #6b7280;
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font-size: 0.875rem;
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}
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@media (max-width: 768px) {
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.artwork-recommendations {
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padding: 1.5rem;
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}
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.recommendations-header {
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flex-direction: column;
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gap: 0.5rem;
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align-items: flex-start;
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}
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.artworks-grid {
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grid-template-columns: 1fr;
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gap: 1.5rem;
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}
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}
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</style>
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