video func implemented

frontend/src/components/routes/ArticleDetailComponent.tsx

@@ -3,6 +3,8 @@ import { Link } from '@tanstack/react-router'
 import * as api from '@/lib/api'
 import ReactMarkdown from 'react-markdown'
 import remarkGfm from 'remark-gfm'
+import { YouTubeEmbed } from '@/components/ui/youtube-embed'
+import { extractYouTubeVideoId, getVideoPositionClasses } from '@/lib/video-utils'
 
 export function ArticleDetailComponent({ id }: { id: string }) {
   const { data, isLoading, error } = useQuery({
@@ -110,6 +112,21 @@ export function ArticleDetailComponent({ id }: { id: string }) {
         </div>
       )}
 
+      {/* Video rendering */}
+      {data.videoUrl && data.videoPosition !== 'none' && (
+        <div className={getVideoPositionClasses(data.videoPosition)}>
+          <YouTubeEmbed
+            url={data.videoUrl}
+            title={data.title}
+            caption={data.videoCaption}
+            autoplay={false}
+            controls={true}
+            modestbranding={true}
+            showRelated={false}
+          />
+        </div>
+      )}
+
       <div className="prose prose-slate max-w-none">
         <div className="text-lg leading-relaxed mb-6">
           <ReactMarkdown 
@@ -121,7 +138,27 @@ export function ArticleDetailComponent({ id }: { id: string }) {
                   className="max-w-full h-auto rounded-lg my-4"
                   alt={props.alt || 'Article image'}
                 />
-              )
+              ),
+              a: (props) => {
+                // Check if the link is a YouTube URL
+                const videoId = extractYouTubeVideoId(props.href || '');
+                if (videoId) {
+                  return (
+                    <div className="my-6">
+                      <YouTubeEmbed
+                        url={props.href || ''}
+                        title={props.title || 'YouTube video'}
+                        autoplay={false}
+                        controls={true}
+                        modestbranding={true}
+                        showRelated={false}
+                      />
+                    </div>
+                  );
+                }
+                // Regular link
+                return <a {...props} className="text-blue-600 hover:text-blue-800 underline" />;
+              }
             }}
           >
             {data.content}

frontend/src/components/ui/youtube-embed.tsx

@@ -0,0 +1,134 @@
+import { useState } from 'react';
+import { cn } from '@/lib/utils';
+import { extractYouTubeVideoId, generateYouTubeEmbedUrl } from '@/lib/video-utils';
+
+interface YouTubeEmbedProps {
+  /** YouTube video URL or video ID */
+  url: string;
+  /** Video title for accessibility */
+  title?: string;
+  /** Optional caption below the video */
+  caption?: string;
+  /** Additional CSS classes */
+  className?: string;
+  /** Autoplay the video (muted on mobile) */
+  autoplay?: boolean;
+  /** Show video controls */
+  controls?: boolean;
+  /** Reduce YouTube branding */
+  modestbranding?: boolean;
+  /** Show related videos at the end */
+  showRelated?: boolean;
+  /** Start time in seconds */
+  startTime?: number;
+  /** End time in seconds */
+  endTime?: number;
+  /** Show loading state */
+  showLoading?: boolean;
+}
+
+export function YouTubeEmbed({
+  url,
+  title = 'YouTube video',
+  caption,
+  className,
+  autoplay = false,
+  controls = true,
+  modestbranding = true,
+  showRelated = false,
+  startTime,
+  endTime,
+  showLoading = true,
+}: YouTubeEmbedProps) {
+  const [isLoaded, setIsLoaded] = useState(false);
+  const [hasError, setHasError] = useState(false);
+  
+  // Extract video ID from URL
+  const videoId = extractYouTubeVideoId(url);
+  
+  if (!videoId) {
+    return (
+      <div className={cn('p-4 bg-destructive/10 border border-destructive/20 rounded-lg', className)}>
+        <p className="text-destructive text-sm">
+          Invalid YouTube URL: {url}
+        </p>
+      </div>
+    );
+  }
+  
+  // Generate embed URL with options
+  const embedUrl = generateYouTubeEmbedUrl(videoId, {
+    autoplay,
+    controls,
+    modestbranding,
+    rel: showRelated,
+    playsinline: true,
+    start: startTime,
+    end: endTime,
+  });
+  
+  return (
+    <div className={cn('w-full', className)}>
+      {/* Video container with aspect ratio */}
+      <div className="relative pt-[56.25%] bg-muted rounded-lg overflow-hidden">
+        {/* Loading state */}
+        {showLoading && !isLoaded && !hasError && (
+          <div className="absolute inset-0 flex items-center justify-center">
+            <div className="w-12 h-12 border-4 border-primary/30 border-t-primary rounded-full animate-spin" />
+          </div>
+        )}
+        
+        {/* Error state */}
+        {hasError && (
+          <div className="absolute inset-0 flex flex-col items-center justify-center p-4 text-center">
+            <div className="text-destructive mb-2">
+              <svg
+                className="w-12 h-12 mx-auto"
+                fill="none"
+                stroke="currentColor"
+                viewBox="0 0 24 24"
+                xmlns="http://www.w3.org/2000/svg"
+              >
+                <path
+                  strokeLinecap="round"
+                  strokeLinejoin="round"
+                  strokeWidth={2}
+                  d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"
+                />
+              </svg>
+            </div>
+            <p className="text-destructive font-medium">Video failed to load</p>
+            <p className="text-muted-foreground text-sm mt-1">
+              The YouTube video could not be loaded. Please check the URL or try again later.
+            </p>
+          </div>
+        )}
+        
+        {/* YouTube iframe */}
+        {!hasError && (
+          <iframe
+            className={cn(
+              'absolute top-0 left-0 w-full h-full border-0 rounded-lg',
+              !isLoaded && 'opacity-0'
+            )}
+            src={embedUrl}
+            title={title}
+            allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
+            allowFullScreen
+            loading="lazy"
+            referrerPolicy="strict-origin-when-cross-origin"
+            onLoad={() => setIsLoaded(true)}
+            onError={() => setHasError(true)}
+          />
+        )}
+      </div>
+      
+      {/* Caption */}
+      {caption && (
+        <div className="mt-2 text-sm text-muted-foreground text-center">
+          {caption}
+        </div>
+      )}
+    </div>
+  );
+}