live blog implemented

frontend/src/components/features/live-blog/LiveBlogUpdate.tsx

@@ -0,0 +1,145 @@
+import React from 'react';
+import type { LiveBlogUpdate as ApiLiveBlogUpdate } from '@/lib/api';
+import { Button } from '@/components/ui/button';
+import { cn } from '@/lib/utils';
+import { 
+  Pin, 
+  PinOff, 
+  Edit, 
+  Trash2, 
+  Clock,
+  User 
+} from 'lucide-react';
+
+interface LiveBlogUpdateProps {
+  update: ApiLiveBlogUpdate;
+  isEditing?: boolean;
+  onEdit?: (update: ApiLiveBlogUpdate) => void;
+  onDelete?: (update: ApiLiveBlogUpdate) => void;
+  onPinToggle?: (update: ApiLiveBlogUpdate) => void;
+  showAdminControls?: boolean;
+}
+
+export function LiveBlogUpdate({
+  update,
+  isEditing = false,
+  onEdit,
+  onDelete,
+  onPinToggle,
+  showAdminControls = false,
+}: LiveBlogUpdateProps) {
+  const isPinned = update.isPinned;
+  
+  return (
+    <div
+      className={cn(
+        'relative p-4 rounded-lg border transition-all duration-200',
+        isPinned && 'border-primary bg-primary/5 shadow-sm',
+        !isPinned && 'border-border hover:border-muted-foreground/20'
+      )}
+    >
+      {/* Pinned indicator */}
+      {isPinned && (
+        <div className="absolute -top-2 -left-2 bg-primary text-primary-foreground text-xs px-2 py-1 rounded-full flex items-center gap-1">
+          <Pin className="w-3 h-3" />
+          Pinned
+        </div>
+      )}
+
+      {/* Admin controls */}
+      {showAdminControls && (
+        <div className="absolute top-2 right-2 flex gap-1 opacity-0 group-hover:opacity-100 transition-opacity">
+          <Button
+            variant="ghost"
+            size="sm"
+            onClick={() => onPinToggle?.(update)}
+            className="h-8 w-8 p-0"
+          >
+            {isPinned ? <PinOff className="w-4 h-4" /> : <Pin className="w-4 h-4" />}
+          </Button>
+          <Button
+            variant="ghost"
+            size="sm"
+            onClick={() => onEdit?.(update)}
+            className="h-8 w-8 p-0"
+          >
+            <Edit className="w-4 h-4" />
+          </Button>
+          <Button
+            variant="ghost"
+            size="sm"
+            onClick={() => onDelete?.(update)}
+            className="h-8 w-8 p-0 text-destructive hover:text-destructive"
+          >
+            <Trash2 className="w-4 h-4" />
+          </Button>
+        </div>
+      )}
+
+      <div className="flex items-start justify-between mb-3">
+        <div className="flex items-center gap-3">
+          {update.author ? (
+            <>
+              {update.author.avatar ? (
+                <img
+                  src={update.author.avatar}
+                  alt={update.author.name}
+                  className="w-8 h-8 rounded-full object-cover"
+                />
+              ) : (
+                <div className="w-8 h-8 rounded-full bg-muted flex items-center justify-center">
+                  <User className="w-4 h-4 text-muted-foreground" />
+                </div>
+              )}
+              <div>
+                <div className="font-medium text-sm">{update.author.name}</div>
+                {update.author.slug && (
+                  <div className="text-xs text-muted-foreground">@{update.author.slug}</div>
+                )}
+              </div>
+            </>
+          ) : (
+            <div className="flex items-center gap-2 text-muted-foreground">
+              <User className="w-4 h-4" />
+              <span className="text-sm">Anonymous</span>
+            </div>
+          )}
+        </div>
+        
+        <div className="flex items-center gap-2 text-xs text-muted-foreground">
+          <Clock className="w-3 h-3" />
+          <span>{new Date(update.createdAt).toLocaleTimeString()}</span>
+        </div>
+      </div>
+
+      {/* Update content */}
+      <div className="prose prose-sm max-w-none">
+        {isEditing ? (
+          <textarea
+            defaultValue={update.content}
+            className="w-full p-2 border rounded-md resize-none focus:outline-none focus:ring-2 focus:ring-primary"
+            rows={3}
+            autoFocus
+          />
+        ) : (
+          <div className="text-sm leading-relaxed whitespace-pre-wrap">
+            {update.content}
+          </div>
+        )}
+      </div>
+
+      {/* Scheduled indicator */}
+      {update.scheduledAt && new Date(update.scheduledAt) > new Date() && (
+        <div className="mt-2 text-xs text-muted-foreground flex items-center gap-1">
+          <Clock className="w-3 h-3" />
+          Scheduled for: {new Date(update.scheduledAt).toLocaleString()}
+        </div>
+      )}
+
+      {/* Update metadata */}
+      <div className="mt-2 text-xs text-muted-foreground">
+        ID: {update.id.slice(0, 8)}
+      </div>
+    </div>
+  );
+}

frontend/src/components/features/live-blog/LiveBlogViewer.tsx

@@ -0,0 +1,301 @@
+import React, { useState, useEffect, useRef, useCallback } from 'react';
+import { useLiveBlogStream } from '@/hooks/useLiveBlogStream';
+import { useLiveBlog, useLiveBlogUpdates } from '@/queries/live-blogs';
+import type { LiveBlogUpdate as ApiLiveBlogUpdate } from '@/lib/api';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import { cn } from '@/lib/utils';
+
+interface LiveBlogViewerProps {
+  slug: string;
+  className?: string;
+}
+
+export function LiveBlogViewer({ slug, className }: LiveBlogViewerProps) {
+  const [autoScroll, setAutoScroll] = useState(true);
+  const [newUpdatesCount, setNewUpdatesCount] = useState(0);
+  const [isScrolledUp, setIsScrolledUp] = useState(false);
+  
+  const updatesContainerRef = useRef<HTMLDivElement>(null);
+  const lastUpdateCountRef = useRef(0);
+
+  const { data: liveBlog, isLoading: blogLoading, error: blogError } = useLiveBlog(slug);
+  const { 
+    data: updatesData, 
+    isLoading: updatesLoading, 
+    refetch: refetchUpdates 
+  } = useLiveBlogUpdates(liveBlog?.id || '', 1, 100);
+  
+  const { 
+    isConnected, 
+    lastEvent, 
+    connectionError,
+    reconnectAttempts,
+    connect 
+  } = useLiveBlogStream(liveBlog?.id || '');
+
+  const scrollToBottom = useCallback(() => {
+    if (updatesContainerRef.current && autoScroll) {
+      const container = updatesContainerRef.current;
+      container.scrollTo({
+        top: container.scrollHeight,
+        behavior: 'smooth'
+      });
+    }
+  }, [autoScroll]);
+
+  const handleScroll = useCallback(() => {
+    if (!updatesContainerRef.current) return;
+
+    const container = updatesContainerRef.current;
+    const isAtBottom = container.scrollHeight - container.scrollTop <= container.clientHeight + 50;
+    
+    setIsScrolledUp(!isAtBottom);
+    
+    if (isAtBottom) {
+      setNewUpdatesCount(0);
+    }
+  }, []);
+
+  const handleAutoScrollToggle = useCallback(() => {
+    setAutoScroll(!autoScroll);
+    if (!autoScroll) {
+      scrollToBottom();
+      setNewUpdatesCount(0);
+    }
+  }, [autoScroll, scrollToBottom]);
+
+  const showNewUpdates = useCallback(() => {
+    setNewUpdatesCount(0);
+    scrollToBottom();
+    setIsScrolledUp(false);
+  }, [scrollToBottom]);
+
+  // Handle new updates from SSE
+  useEffect(() => {
+    if (lastEvent?.type === 'update') {
+      const handleUpdate = () => {
+        refetchUpdates();
+        
+        if (autoScroll && !isScrolledUp) {
+          // Add a small delay to ensure the update is in the DOM
+          setTimeout(() => {
+            scrollToBottom();
+          }, 100);
+        } else if (!autoScroll || isScrolledUp) {
+          setNewUpdatesCount(prev => prev + 1);
+        }
+      };
+      
+      handleUpdate();
+    }
+  }, [lastEvent, autoScroll, isScrolledUp, refetchUpdates, scrollToBottom]);
+
+  // Initial scroll to bottom when data loads
+  useEffect(() => {
+    if (updatesData?.data && updatesData.data.length > 0) {
+      const currentUpdateCount = updatesData.data.length;
+      
+      // Only auto-scroll if this is the initial load or user is at bottom
+      if (currentUpdateCount > lastUpdateCountRef.current && !isScrolledUp) {
+        setTimeout(scrollToBottom, 100);
+      }
+      
+      lastUpdateCountRef.current = currentUpdateCount;
+    }
+  }, [updatesData, scrollToBottom, isScrolledUp]);
+
+  if (blogLoading) {
+    return (
+      <Card className={cn('w-full max-w-4xl mx-auto', className)}>
+        <CardContent className="p-6">
+          <div className="animate-pulse space-y-4">
+            <div className="h-8 bg-muted rounded w-3/4"></div>
+            <div className="h-4 bg-muted rounded w-1/2"></div>
+            <div className="space-y-2">
+              <div className="h-16 bg-muted rounded"></div>
+              <div className="h-16 bg-muted rounded"></div>
+              <div className="h-16 bg-muted rounded"></div>
+            </div>
+          </div>
+        </CardContent>
+      </Card>
+    );
+  }
+
+  if (blogError || !liveBlog) {
+    return (
+      <Card className={cn('w-full max-w-4xl mx-auto', className)}>
+        <CardContent className="p-6">
+          <div className="text-center text-destructive">
+            <h3 className="text-lg font-semibold mb-2">Failed to load live blog</h3>
+            <p className="text-sm">
+              {blogError instanceof Error ? blogError.message : 'Unknown error occurred'}
+            </p>
+          </div>
+        </CardContent>
+      </Card>
+    );
+  }
+
+  const updates = updatesData?.data || [];
+  const isLive = liveBlog.status === 'live';
+
+  return (
+    <Card className={cn('w-full max-w-4xl mx-auto', className)}>
+      <CardHeader>
+        <div className="flex items-center justify-between">
+          <div className="flex-1">
+            <CardTitle className="text-2xl mb-2">{liveBlog.title}</CardTitle>
+            {liveBlog.description && (
+              <p className="text-muted-foreground">{liveBlog.description}</p>
+            )}
+            <div className="flex items-center gap-4 mt-4 text-sm text-muted-foreground">
+              <div className="flex items-center gap-2">
+                <div className={cn(
+                  'w-2 h-2 rounded-full',
+                  isLive ? 'bg-green-500' : 'bg-gray-400'
+                )} />
+                <span>{isLive ? 'Live' : 'Ended'}</span>
+              </div>
+              {isLive && (
+                <div className="flex items-center gap-2">
+                  <div className={cn(
+                    'w-2 h-2 rounded-full',
+                    isConnected ? 'bg-green-500' : 'bg-red-500'
+                  )} />
+                  <span>
+                    {isConnected ? 'Connected' : `Reconnecting... (${reconnectAttempts})`}
+                  </span>
+                </div>
+              )}
+              <span>{liveBlog.viewCount} views</span>
+              <span>{updates.length} updates</span>
+            </div>
+          </div>
+          <div className="flex items-center gap-2">
+            <Button
+              variant={autoScroll ? 'default' : 'outline'}
+              size="sm"
+              onClick={handleAutoScrollToggle}
+            >
+              {autoScroll ? 'Auto-scroll ON' : 'Auto-scroll OFF'}
+            </Button>
+            {!isConnected && (
+              <Button
+                variant="outline"
+                size="sm"
+                onClick={connect}
+              >
+                Reconnect
+              </Button>
+            )}
+          </div>
+        </div>
+      </CardHeader>
+
+      <CardContent className="p-0">
+        {connectionError && (
+          <div className="m-6 p-4 bg-destructive/10 border border-destructive/20 rounded-lg">
+            <div className="flex items-center justify-between">
+              <p className="text-sm text-destructive">
+                {connectionError}
+              </p>
+              <Button
+                variant="outline"
+                size="sm"
+                onClick={connect}
+              >
+                Try Again
+              </Button>
+            </div>
+          </div>
+        )}
+
+        <div
+          ref={updatesContainerRef}
+          className="max-h-[600px] overflow-y-auto px-6 pb-6"
+          onScroll={handleScroll}
+        >
+          {updates.length === 0 && !updatesLoading ? (
+            <div className="text-center py-12 text-muted-foreground">
+              <p>No updates yet. Check back soon!</p>
+            </div>
+          ) : (
+            <div className="space-y-4">
+              {updates.map((update) => (
+                <LiveBlogUpdate key={update.id} update={update} />
+              ))}
+              {updatesLoading && (
+                <div className="animate-pulse">
+                  <div className="h-16 bg-muted rounded"></div>
+                </div>
+              )}
+            </div>
+          )}
+        </div>
+
+        {/* New updates indicator */}
+        {isScrolledUp && newUpdatesCount > 0 && (
+          <div className="sticky bottom-0 bg-background border-t p-4">
+            <div className="flex items-center justify-between">
+              <span className="text-sm text-muted-foreground">
+                {newUpdatesCount} new {newUpdatesCount === 1 ? 'update' : 'updates'}
+              </span>
+              <Button size="sm" onClick={showNewUpdates}>
+                Show Updates
+              </Button>
+            </div>
+          </div>
+        )}
+      </CardContent>
+    </Card>
+  );
+}
+
+interface LiveBlogUpdateProps {
+  update: ApiLiveBlogUpdate;
+}
+
+function LiveBlogUpdate({ update }: LiveBlogUpdateProps) {
+  const isPinned = update.isPinned;
+  
+  return (
+    <div
+      className={cn(
+        'relative p-4 rounded-lg border',
+        isPinned && 'border-primary bg-primary/5'
+      )}
+    >
+      {isPinned && (
+        <div className="absolute -top-2 -left-2 bg-primary text-primary-foreground text-xs px-2 py-1 rounded-full">
+          Pinned
+        </div>
+      )}
+      
+      <div className="flex items-start justify-between mb-2">
+        <div className="flex items-center gap-2">
+          {update.author && (
+            <>
+              {update.author.avatar && (
+                <img
+                  src={update.author.avatar}
+                  alt={update.author.name}
+                  className="w-6 h-6 rounded-full"
+                />
+              )}
+              <span className="text-sm font-medium">{update.author.name}</span>
+            </>
+          )}
+        </div>
+        <span className="text-xs text-muted-foreground">
+          {new Date(update.createdAt).toLocaleTimeString()}
+        </span>
+      </div>
+      
+      <div className="text-sm leading-relaxed whitespace-pre-wrap">
+        {update.content}
+      </div>
+    </div>
+  );
+}