links infinite scroll

app/links/page.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useState, useEffect } from 'react';
+import { useState, useEffect, useCallback, useRef } from 'react';
 import CreateLinkModal from '../components/ui/CreateLinkModal';
 import { Link, StatsOverview, Tag } from '../api/types';
 
@@ -48,6 +48,13 @@ export default function LinksPage() {
   const [isLoading, setIsLoading] = useState(true);
   const [error, setError] = useState<string | null>(null);
   
+  // 无限加载相关状态
+  const [page, setPage] = useState(1);
+  const [hasMore, setHasMore] = useState(true);
+  const [isLoadingMore, setIsLoadingMore] = useState(false);
+  const observer = useRef<IntersectionObserver | null>(null);
+  const lastLinkElementRef = useRef<HTMLTableRowElement | null>(null);
+  
   // 映射API数据到UI所需格式的函数
   const mapApiLinkToUiLink = (apiLink: Link): UILink => {
     // 生成短URL显示 - 因为数据库中没有short_url字段
@@ -91,49 +98,116 @@ export default function LinksPage() {
   };
   
   // 获取链接数据
-  useEffect(() => {
-    const fetchLinks = async () => {
-      try {
+  const fetchLinks = useCallback(async (pageNum: number, isInitialLoad: boolean = false) => {
+    try {
+      if (isInitialLoad) {
         setIsLoading(true);
-        setError(null);
+      } else {
+        setIsLoadingMore(true);
+      }
+      setError(null);
       
-        // 获取链接列表
-        const linksResponse = await fetch('/api/links');
-        if (!linksResponse.ok) {
-          throw new Error(`Failed to fetch links: ${linksResponse.statusText}`);
-        }
-        const linksData = await linksResponse.json();
+      // 获取链接列表
+      const linksResponse = await fetch(`/api/links?page=${pageNum}&limit=20${searchQuery ? `&search=${encodeURIComponent(searchQuery)}` : ''}`);
+      if (!linksResponse.ok) {
+        throw new Error(`Failed to fetch links: ${linksResponse.statusText}`);
+      }
+      const linksData = await linksResponse.json();
       
-        // 获取标签列表
+      const uiLinks = linksData.data.map(mapApiLinkToUiLink);
+      
+      if (isInitialLoad) {
+        setLinks(uiLinks);
+      } else {
+        setLinks(prevLinks => [...prevLinks, ...uiLinks]);
+      }
+      
+      // 检查是否还有更多数据可加载
+      const { pagination } = linksData;
+      setHasMore(pagination.page < pagination.totalPages);
+      
+      if (isInitialLoad) {
+        // 只在初始加载时获取标签和统计数据
         const tagsResponse = await fetch('/api/tags');
         if (!tagsResponse.ok) {
           throw new Error(`Failed to fetch tags: ${tagsResponse.statusText}`);
         }
         const tagsData = await tagsResponse.json();
         
-        // 获取统计数据
         const statsResponse = await fetch('/api/stats');
         if (!statsResponse.ok) {
           throw new Error(`Failed to fetch stats: ${statsResponse.statusText}`);
         }
         const statsData = await statsResponse.json();
         
-        // 处理并设置数据
-        const uiLinks = linksData.data.map(mapApiLinkToUiLink);
-        setLinks(uiLinks);
         setAllTags(tagsData);
         setStats(statsData);
+      }
       
-      } catch (err) {
-        console.error('Data loading failed:', err);
-        setError(err instanceof Error ? err.message : 'Unknown error');
-      } finally {
+    } catch (err) {
+      console.error('Data loading failed:', err);
+      setError(err instanceof Error ? err.message : 'Unknown error');
+    } finally {
+      if (isInitialLoad) {
         setIsLoading(false);
+      } else {
+        setIsLoadingMore(false);
+      }
+    }
+  }, [searchQuery]);
+  
+  // 初始加载
+  useEffect(() => {
+    setPage(1);
+    fetchLinks(1, true);
+  }, [fetchLinks]);
+  
+  // 搜索过滤变化时重新加载数据
+  useEffect(() => {
+    // 当搜索关键词变化时，重置页码和链接列表，然后重新获取数据
+    setLinks([]);
+    setPage(1);
+    fetchLinks(1, true);
+  }, [searchQuery, fetchLinks]);
+  
+  // 设置Intersection Observer来检测滚动并加载更多数据
+  useEffect(() => {
+    // 如果正在加载或没有更多数据，则不设置observer
+    if (isLoading || isLoadingMore || !hasMore) return;
+    
+    // 断开之前的observer连接
+    if (observer.current) {
+      observer.current.disconnect();
+    }
+    
+    observer.current = new IntersectionObserver(entries => {
+      if (entries[0].isIntersecting && hasMore) {
+        // 当最后一个元素可见且有更多数据时，加载下一页
+        setPage(prevPage => prevPage + 1);
+      }
+    }, {
+      root: null,
+      rootMargin: '0px',
+      threshold: 0.5
+    });
+    
+    if (lastLinkElementRef.current) {
+      observer.current.observe(lastLinkElementRef.current);
+    }
+    
+    return () => {
+      if (observer.current) {
+        observer.current.disconnect();
       }
     };
+  }, [isLoading, isLoadingMore, hasMore, links]);
   
-    fetchLinks();
-  }, []);
+  // 当页码变化时加载更多数据
+  useEffect(() => {
+    if (page > 1) {
+      fetchLinks(page, false);
+    }
+  }, [page, fetchLinks]);
   
   const filteredLinks = links.filter(link => 
     link.name.toLowerCase().includes(searchQuery.toLowerCase()) ||
@@ -152,14 +226,8 @@ export default function LinksPage() {
       console.log('创建链接:', linkData);
       
       // 刷新链接列表
-      const response = await fetch('/api/links');
-      if (!response.ok) {
-        throw new Error(`刷新链接列表失败: ${response.statusText}`);
-      }
-      
-      const newData = await response.json();
-      const uiLinks = newData.data.map(mapApiLinkToUiLink);
-      setLinks(uiLinks);
+      setPage(1);
+      fetchLinks(1, true);
       
       setShowCreateModal(false);
     } catch (err) {
@@ -309,8 +377,8 @@ export default function LinksPage() {
         {/* Links Table */}
         <div className="overflow-hidden border rounded-lg shadow bg-card-bg border-card-border">
           <div className="overflow-x-auto">
-            <table className="w-full text-sm text-left text-text-secondary">
-              <thead className="text-xs uppercase border-b bg-card-bg/60 text-text-secondary border-card-border">
+            <table className="min-w-full divide-y divide-card-border">
+              <thead className="bg-card-bg-secondary">
                 <tr>
                   <th scope="col" className="px-6 py-3">Link Info</th>
                   <th scope="col" className="px-6 py-3">Visits</th>
@@ -323,28 +391,20 @@ export default function LinksPage() {
                   </th>
                 </tr>
               </thead>
-              <tbody>
-                {isLoading && links.length === 0 ? (
-                  <tr className="border-b bg-card-bg border-card-border">
-                    <td colSpan={7} className="px-6 py-4 text-center text-text-secondary">
-                      <div className="flex items-center justify-center">
-                        <div className="w-6 h-6 border-2 rounded-full border-accent-blue border-t-transparent animate-spin"></div>
-                        <span className="ml-2">Loading...</span>
-                      </div>
-                    </td>
-                  </tr>
-                ) : filteredLinks.length === 0 ? (
-                  <tr className="border-b bg-card-bg border-card-border">
-                    <td colSpan={7} className="px-6 py-4 text-center text-text-secondary">
-                      No links found matching your search criteria
+              <tbody className="divide-y divide-card-border">
+                {filteredLinks.length === 0 ? (
+                  <tr>
+                    <td colSpan={7} className="px-6 py-12 text-center text-text-secondary">
+                      No links found. Create one to get started.
                     </td>
                   </tr>
                 ) : (
-                  filteredLinks.map((link) => (
+                  filteredLinks.map((link, index) => (
                     <tr 
                       key={link.id} 
-                      className="border-b cursor-pointer bg-card-bg border-card-border hover:bg-card-bg/80"
                       onClick={() => handleOpenLinkDetails(link.id)}
+                      className="transition-colors cursor-pointer hover:bg-card-bg-secondary"
+                      ref={index === filteredLinks.length - 1 ? lastLinkElementRef : null}
                     >
                       <td className="px-6 py-4">
                         <div className="font-medium text-foreground">{link.name}</div>
@@ -436,6 +496,21 @@ export default function LinksPage() {
               </tbody>
             </table>
           </div>
+          
+          {/* Loading more indicator */}
+          {isLoadingMore && (
+            <div className="p-4 text-center">
+              <div className="inline-block w-6 h-6 border-2 rounded-full border-accent-blue border-t-transparent animate-spin"></div>
+              <p className="mt-2 text-sm text-text-secondary">Loading more links...</p>
+            </div>
+          )}
+          
+          {/* End of results message */}
+          {!hasMore && links.length > 0 && (
+            <div className="p-4 text-center text-sm text-text-secondary">
+              No more links to load.
+            </div>
+          )}
         </div>
         
         {/* Tags Section */}