feat: Implement comprehensive change display

src/components/moderation/FieldComparison.tsx

@@ -75,35 +75,45 @@ export function ImageDiff({ change, compact = false }: ImageDiffProps) {
     );
   }
 
+  // Determine scenario
+  const isAddition = !oldUrl && newUrl;
+  const isRemoval = oldUrl && !newUrl;
+  const isReplacement = oldUrl && newUrl;
+
   return (
-    <div className="flex flex-col gap-2 p-2 rounded-md bg-muted/50">
+    <div className="flex flex-col gap-2 p-3 rounded-md bg-muted/50">
       <div className="text-sm font-medium">
         {type === 'banner' ? 'Banner' : 'Card'} Image
+        {isAddition && <span className="text-green-600 dark:text-green-400 ml-2">(New)</span>}
+        {isRemoval && <span className="text-red-600 dark:text-red-400 ml-2">(Removed)</span>}
+        {isReplacement && <span className="text-amber-600 dark:text-amber-400 ml-2">(Changed)</span>}
       </div>
       
-      <div className="flex items-center gap-2">
+      <div className="flex items-center gap-3">
         {oldUrl && (
           <div className="flex-1">
             <div className="text-xs text-muted-foreground mb-1">Before</div>
             <img 
               src={oldUrl} 
               alt="Previous" 
-              className="w-full h-20 object-cover rounded border-2 border-red-500/50"
+              className="w-full h-32 object-cover rounded border-2 border-red-500/50"
+              loading="lazy"
             />
           </div>
         )}
         
         {oldUrl && newUrl && (
-          <ArrowRight className="h-4 w-4 text-muted-foreground flex-shrink-0" />
+          <ArrowRight className="h-5 w-5 text-muted-foreground flex-shrink-0" />
         )}
         
         {newUrl && (
           <div className="flex-1">
-            <div className="text-xs text-muted-foreground mb-1">After</div>
+            <div className="text-xs text-muted-foreground mb-1">{isAddition ? 'New Image' : 'After'}</div>
             <img 
               src={newUrl} 
               alt="New" 
-              className="w-full h-20 object-cover rounded border-2 border-green-500/50"
+              className="w-full h-32 object-cover rounded border-2 border-green-500/50"
+              loading="lazy"
             />
           </div>
         )}

src/components/moderation/ModerationQueue.tsx

@@ -17,6 +17,7 @@ import { SubmissionReviewManager } from './SubmissionReviewManager';
 import { useRealtimeSubmissions } from '@/hooks/useRealtimeSubmissions';
 import { useIsMobile } from '@/hooks/use-mobile';
 import { SubmissionChangesDisplay } from './SubmissionChangesDisplay';
+import { SubmissionItemsList } from './SubmissionItemsList';
 import { RealtimeConnectionStatus } from './RealtimeConnectionStatus';
 import { MeasurementDisplay } from '@/components/ui/measurement-display';
 
@@ -1436,9 +1437,11 @@ export const ModerationQueue = forwardRef<ModerationQueueRef>((props, ref) => {
                            item.submission_type === 'property_owner' ||
                            item.submission_type === 'park' ||
                            item.submission_type === 'ride') ? (
-                      <div className="text-sm text-muted-foreground">
+                      <SubmissionItemsList 
-                        Standard entity submission - open review manager to see details
+                        submissionId={item.id}
-                      </div>
+                        view="summary"
+                        showImages={true}
+                      />
                     ) : (
                       <div>
                         <div className="text-sm text-muted-foreground mb-2">

src/components/moderation/PhotoComparison.tsx

@@ -0,0 +1,159 @@
+import { Badge } from '@/components/ui/badge';
+import { ImageIcon, Trash2, Edit } from 'lucide-react';
+
+interface PhotoAdditionPreviewProps {
+  photos: Array<{
+    url: string;
+    title?: string;
+    caption?: string;
+  }>;
+  compact?: boolean;
+}
+
+export function PhotoAdditionPreview({ photos, compact = false }: PhotoAdditionPreviewProps) {
+  if (compact) {
+    return (
+      <Badge variant="outline" className="text-green-600 dark:text-green-400">
+        <ImageIcon className="h-3 w-3 mr-1" />
+        +{photos.length} Photo{photos.length > 1 ? 's' : ''}
+      </Badge>
+    );
+  }
+
+  return (
+    <div className="flex flex-col gap-2 p-3 rounded-md bg-muted/50">
+      <div className="text-sm font-medium text-green-600 dark:text-green-400">
+        <ImageIcon className="h-4 w-4 inline mr-1" />
+        Adding {photos.length} Photo{photos.length > 1 ? 's' : ''}
+      </div>
+      
+      <div className="grid grid-cols-2 sm:grid-cols-3 gap-2">
+        {photos.slice(0, 6).map((photo, idx) => (
+          <div key={idx} className="flex flex-col gap-1">
+            <img 
+              src={photo.url}
+              alt={photo.title || photo.caption || `Photo ${idx + 1}`}
+              className="w-full h-24 object-cover rounded border-2 border-green-500/50"
+              loading="lazy"
+            />
+            {(photo.title || photo.caption) && (
+              <div className="text-xs text-muted-foreground truncate">
+                {photo.title || photo.caption}
+              </div>
+            )}
+          </div>
+        ))}
+        {photos.length > 6 && (
+          <div className="flex items-center justify-center h-24 bg-muted rounded border-2 border-dashed">
+            <span className="text-sm text-muted-foreground">
+              +{photos.length - 6} more
+            </span>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}
+
+interface PhotoEditPreviewProps {
+  photo: {
+    url: string;
+    oldCaption?: string;
+    newCaption?: string;
+    oldTitle?: string;
+    newTitle?: string;
+  };
+  compact?: boolean;
+}
+
+export function PhotoEditPreview({ photo, compact = false }: PhotoEditPreviewProps) {
+  if (compact) {
+    return (
+      <Badge variant="outline" className="text-amber-600 dark:text-amber-400">
+        <Edit className="h-3 w-3 mr-1" />
+        Photo Edit
+      </Badge>
+    );
+  }
+
+  return (
+    <div className="flex flex-col gap-2 p-3 rounded-md bg-muted/50">
+      <div className="text-sm font-medium text-amber-600 dark:text-amber-400">
+        <Edit className="h-4 w-4 inline mr-1" />
+        Photo Metadata Edit
+      </div>
+      
+      <div className="flex gap-3">
+        <img 
+          src={photo.url}
+          alt="Photo being edited"
+          className="w-32 h-32 object-cover rounded"
+          loading="lazy"
+        />
+        
+        <div className="flex-1 flex flex-col gap-2 text-sm">
+          {photo.oldTitle !== photo.newTitle && (
+            <div>
+              <div className="font-medium mb-1">Title:</div>
+              <div className="text-red-600 dark:text-red-400 line-through">{photo.oldTitle || 'None'}</div>
+              <div className="text-green-600 dark:text-green-400">{photo.newTitle || 'None'}</div>
+            </div>
+          )}
+          
+          {photo.oldCaption !== photo.newCaption && (
+            <div>
+              <div className="font-medium mb-1">Caption:</div>
+              <div className="text-red-600 dark:text-red-400 line-through">{photo.oldCaption || 'None'}</div>
+              <div className="text-green-600 dark:text-green-400">{photo.newCaption || 'None'}</div>
+            </div>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}
+
+interface PhotoDeletionPreviewProps {
+  photo: {
+    url: string;
+    title?: string;
+    caption?: string;
+  };
+  compact?: boolean;
+}
+
+export function PhotoDeletionPreview({ photo, compact = false }: PhotoDeletionPreviewProps) {
+  if (compact) {
+    return (
+      <Badge variant="outline" className="text-red-600 dark:text-red-400">
+        <Trash2 className="h-3 w-3 mr-1" />
+        Delete Photo
+      </Badge>
+    );
+  }
+
+  return (
+    <div className="flex flex-col gap-2 p-3 rounded-md bg-destructive/10">
+      <div className="text-sm font-medium text-red-600 dark:text-red-400">
+        <Trash2 className="h-4 w-4 inline mr-1" />
+        Deleting Photo
+      </div>
+      
+      <div className="flex gap-3">
+        <img 
+          src={photo.url}
+          alt={photo.title || photo.caption || 'Photo to be deleted'}
+          className="w-32 h-32 object-cover rounded opacity-75"
+          loading="lazy"
+        />
+        
+        {(photo.title || photo.caption) && (
+          <div className="flex-1 text-sm">
+            {photo.title && <div className="font-medium">{photo.title}</div>}
+            {photo.caption && <div className="text-muted-foreground">{photo.caption}</div>}
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}

src/components/moderation/SubmissionChangesDisplay.tsx

@@ -3,7 +3,7 @@ import { FieldDiff, ImageDiff, LocationDiff } from './FieldComparison';
 import { detectChanges } from '@/lib/submissionChangeDetection';
 import type { SubmissionItemData } from '@/types/submissions';
 import type { SubmissionItemWithDeps } from '@/lib/submissionItemsService';
-import { Building2, Train, MapPin, Building, User, ImageIcon, Trash2, Edit, Plus } from 'lucide-react';
+import { Building2, Train, MapPin, Building, User, ImageIcon, Trash2, Edit, Plus, AlertTriangle } from 'lucide-react';
 
 interface SubmissionChangesDisplayProps {
   item: SubmissionItemData | SubmissionItemWithDeps;
@@ -11,6 +11,16 @@ interface SubmissionChangesDisplayProps {
   showImages?: boolean;
 }
 
+// Helper to determine change magnitude
+function getChangeMagnitude(totalChanges: number, hasImages: boolean, action: string) {
+  if (action === 'delete') return { label: 'Deletion', variant: 'destructive' as const, icon: AlertTriangle };
+  if (action === 'create') return { label: 'New', variant: 'default' as const, icon: Plus };
+  if (hasImages) return { label: 'Major', variant: 'default' as const, icon: Edit };
+  if (totalChanges >= 5) return { label: 'Major', variant: 'default' as const, icon: Edit };
+  if (totalChanges >= 3) return { label: 'Moderate', variant: 'secondary' as const, icon: Edit };
+  return { label: 'Minor', variant: 'outline' as const, icon: Edit };
+}
+
 export function SubmissionChangesDisplay({ 
   item, 
   view = 'summary',
@@ -45,13 +55,24 @@ export function SubmissionChangesDisplay({
     }
   };
 
+  const magnitude = getChangeMagnitude(
+    changes.totalChanges, 
+    changes.imageChanges.length > 0,
+    changes.action
+  );
+
   if (view === 'summary') {
     return (
       <div className="flex flex-col gap-2">
-        <div className="flex items-center gap-2">
+        <div className="flex items-center gap-2 flex-wrap">
           {getEntityIcon()}
           <span className="font-medium">{changes.entityName}</span>
           {getActionBadge()}
+          {changes.action === 'edit' && (
+            <Badge variant={magnitude.variant} className="text-xs">
+              {magnitude.label} Change
+            </Badge>
+          )}
         </div>
         
         {changes.action === 'edit' && changes.totalChanges > 0 && (
@@ -75,9 +96,9 @@ export function SubmissionChangesDisplay({
           </div>
         )}
         
-        {changes.action === 'create' && (
+        {changes.action === 'create' && item.item_data?.description && (
-          <div className="text-sm text-muted-foreground">
+          <div className="text-sm text-muted-foreground line-clamp-2">
-            New {item.item_type}
+            {item.item_data.description}
           </div>
         )}
         

src/components/moderation/SubmissionItemsList.tsx

@@ -0,0 +1,112 @@
+import { useState, useEffect } from 'react';
+import { supabase } from '@/integrations/supabase/client';
+import { SubmissionChangesDisplay } from './SubmissionChangesDisplay';
+import { PhotoSubmissionDisplay } from './PhotoSubmissionDisplay';
+import { Skeleton } from '@/components/ui/skeleton';
+import { Alert, AlertDescription } from '@/components/ui/alert';
+import { AlertCircle } from 'lucide-react';
+import type { SubmissionItemData } from '@/types/submissions';
+
+interface SubmissionItemsListProps {
+  submissionId: string;
+  view?: 'summary' | 'detailed';
+  showImages?: boolean;
+}
+
+export function SubmissionItemsList({ 
+  submissionId, 
+  view = 'summary',
+  showImages = true 
+}: SubmissionItemsListProps) {
+  const [items, setItems] = useState<SubmissionItemData[]>([]);
+  const [hasPhotos, setHasPhotos] = useState(false);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    fetchSubmissionItems();
+  }, [submissionId]);
+
+  const fetchSubmissionItems = async () => {
+    try {
+      setLoading(true);
+      setError(null);
+
+      // Fetch submission items
+      const { data: itemsData, error: itemsError } = await supabase
+        .from('submission_items')
+        .select('*')
+        .eq('submission_id', submissionId)
+        .order('order_index');
+
+      if (itemsError) throw itemsError;
+
+      // Check for photo submissions
+      const { data: photoData, error: photoError } = await supabase
+        .from('photo_submissions')
+        .select('id')
+        .eq('submission_id', submissionId)
+        .single();
+
+      if (photoError && photoError.code !== 'PGRST116') {
+        console.warn('Error checking photo submissions:', photoError);
+      }
+
+      setItems((itemsData || []) as SubmissionItemData[]);
+      setHasPhotos(!!photoData);
+    } catch (err) {
+      console.error('Error fetching submission items:', err);
+      setError('Failed to load submission details');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  if (loading) {
+    return (
+      <div className="flex flex-col gap-2">
+        <Skeleton className="h-16 w-full" />
+        {view === 'detailed' && <Skeleton className="h-32 w-full" />}
+      </div>
+    );
+  }
+
+  if (error) {
+    return (
+      <Alert variant="destructive">
+        <AlertCircle className="h-4 w-4" />
+        <AlertDescription>{error}</AlertDescription>
+      </Alert>
+    );
+  }
+
+  if (items.length === 0 && !hasPhotos) {
+    return (
+      <div className="text-sm text-muted-foreground">
+        No items found for this submission
+      </div>
+    );
+  }
+
+  return (
+    <div className="flex flex-col gap-3">
+      {/* Show regular submission items */}
+      {items.map((item) => (
+        <div key={item.id} className={view === 'summary' ? 'border-l-2 border-primary/20 pl-3' : ''}>
+          <SubmissionChangesDisplay 
+            item={item}
+            view={view}
+            showImages={showImages}
+          />
+        </div>
+      ))}
+
+      {/* Show photo submission if exists */}
+      {hasPhotos && (
+        <div className={view === 'summary' ? 'border-l-2 border-primary/20 pl-3' : ''}>
+          <PhotoSubmissionDisplay submissionId={submissionId} />
+        </div>
+      )}
+    </div>
+  );
+}

src/lib/submissionChangeDetection.ts

@@ -15,12 +15,22 @@ export interface ImageChange {
   newId?: string;
 }
 
+export interface PhotoChange {
+  type: 'added' | 'edited' | 'deleted';
+  photoUrl: string;
+  title?: string;
+  caption?: string;
+  oldCaption?: string;
+  newCaption?: string;
+}
+
 export interface ChangesSummary {
   action: 'create' | 'edit' | 'delete';
   entityType: string;
   entityName?: string;
   fieldChanges: FieldChange[];
   imageChanges: ImageChange[];
+  photoChanges: PhotoChange[];
   hasLocationChange: boolean;
   totalChanges: number;
 }
@@ -120,8 +130,9 @@ export function detectChanges(item: { item_data?: any; original_data?: any; item
     entityName,
     fieldChanges,
     imageChanges,
+    photoChanges: [], // Will be populated by component with submissionId
     hasLocationChange,
-    totalChanges: fieldChanges.length + imageChanges.length,
+    totalChanges: fieldChanges.length + imageChanges.length + (hasLocationChange ? 1 : 0)
   };
 }
 
@@ -217,10 +228,48 @@ export function formatFieldName(field: string): string {
 export function formatFieldValue(value: any): string {
   if (value === null || value === undefined) return 'None';
   if (typeof value === 'boolean') return value ? 'Yes' : 'No';
-  if (typeof value === 'object') {
+  
-    if (Array.isArray(value)) return `${value.length} items`;
+  // Handle dates
-    return JSON.stringify(value, null, 2);
+  if (value instanceof Date || (typeof value === 'string' && /^\d{4}-\d{2}-\d{2}/.test(value))) {
+    try {
+      const date = new Date(value);
+      return date.toLocaleDateString('en-US', { year: 'numeric', month: 'long', day: 'numeric' });
+    } catch {
+      return String(value);
     }
+  }
+  
+  // Handle arrays - show actual items
+  if (Array.isArray(value)) {
+    if (value.length === 0) return 'None';
+    if (value.length <= 3) return value.map(v => String(v)).join(', ');
+    return `${value.slice(0, 3).map(v => String(v)).join(', ')}... +${value.length - 3} more`;
+  }
+  
+  // Handle objects - create readable summary
+  if (typeof value === 'object') {
+    // Location object
+    if (value.city || value.state_province || value.country) {
+      const parts = [value.city, value.state_province, value.country].filter(Boolean);
+      return parts.join(', ');
+    }
+    
+    // Generic object - show key-value pairs
+    const entries = Object.entries(value).slice(0, 3);
+    if (entries.length === 0) return 'Empty';
+    return entries.map(([k, v]) => `${k}: ${v}`).join(', ');
+  }
+  
+  // Handle URLs
+  if (typeof value === 'string' && value.startsWith('http')) {
+    try {
+      const url = new URL(value);
+      return url.hostname + (url.pathname !== '/' ? url.pathname.slice(0, 30) : '');
+    } catch {
+      return value;
+    }
+  }
+  
   if (typeof value === 'number') return value.toLocaleString();
   return String(value);
 }