修复每个用户只能看到自己的点赞

@@ -61,6 +61,7 @@ class GalleryImage(BaseModel):
     likes: int = 0
     is_mock: bool = Field(default=False, alias="isMock")
     negative_prompt: Optional[str] = None
+    liked_by: List[str] = Field(default_factory=list, alias="likedBy")
 
 
 ImageGenerationResponse.model_rebuild()
@@ -129,6 +130,31 @@ class GalleryStore:
             self._write(data)
         return payload
 
+    def toggle_like(self, image_id: str, user_id: str) -> Optional[dict]:
+        with self.lock:
+            data = self._read()
+            images = data.get("images", [])
+            target_image = next((img for img in images if img.get("id") == image_id), None)
+            
+            if not target_image:
+                return None
+                
+            liked_by = target_image.get("likedBy", [])
+            # Handle legacy data where likedBy might be missing
+            if not isinstance(liked_by, list):
+                liked_by = []
+                
+            if user_id in liked_by:
+                liked_by.remove(user_id)
+                target_image["likes"] = max(0, target_image.get("likes", 0) - 1)
+            else:
+                liked_by.append(user_id)
+                target_image["likes"] = target_image.get("likes", 0) + 1
+            
+            target_image["likedBy"] = liked_by
+            self._write(data)
+            return target_image
+
 
 gallery_store = GalleryStore(GALLERY_DATA_PATH, GALLERY_MAX_ITEMS)
 
@@ -160,6 +186,18 @@ async def health() -> dict:
     return {"status": "ok"}
 
 
+@app.post("/likes/{image_id}")
+async def toggle_like(
+    image_id: str,
+    user_id: str = Query(..., alias="userId")
+) -> dict:
+    """Toggle like status for an image by a user."""
+    updated_image = gallery_store.toggle_like(image_id, user_id)
+    if not updated_image:
+        raise HTTPException(status_code=404, detail="Image not found")
+    return updated_image
+
+
 @app.get("/gallery")
 async def gallery(
     limit: int = Query(200, ge=1, le=1000),

@@ -2,7 +2,7 @@ import React, { useState, useEffect, useMemo, useCallback } from 'react';
 import { ImageItem, ImageGenerationParams, UserProfile } from './types';
 import { SHOWCASE_IMAGES, ADMIN_ID } from './constants';
 import { generateImage } from './services/imageService';
-import { fetchGallery } from './services/galleryService';
+import { fetchGallery, toggleLike } from './services/galleryService';
 import MasonryGrid from './components/MasonryGrid';
 import InputBar from './components/InputBar';
 import HistoryBar from './components/HistoryBar';
@@ -83,18 +83,17 @@ const App: React.FC = () => {
     try {
       const remoteImages = await fetchGallery();
       setImages(prev => {
-        const localState = new Map(
-          prev.map(img => [
-            img.id,
-            { likes: img.likes, isLikedByCurrentUser: !!img.isLikedByCurrentUser },
-          ])
-        );
-
-        const normalized = remoteImages.map(img => ({
-          ...img,
-          likes: localState.get(img.id)?.likes ?? img.likes ?? 0,
-          isLikedByCurrentUser: localState.get(img.id)?.isLikedByCurrentUser ?? false,
-        }));
+        // Map server images, calculating isLikedByCurrentUser
+        const normalized = remoteImages.map(img => {
+          const isLiked = img.likedBy && currentUser 
+             ? img.likedBy.includes(currentUser.employeeId)
+             : false;
+          return {
+            ...img,
+            likes: img.likes, // Trust server
+            isLikedByCurrentUser: isLiked,
+          };
+        });
 
         if (normalized.length >= MIN_GALLERY_ITEMS) {
           return normalized;
@@ -110,17 +109,9 @@ const App: React.FC = () => {
       });
     } catch (err) {
       console.error("Failed to sync gallery", err);
-      setImages(prev => {
-        if (prev.length >= MIN_GALLERY_ITEMS) return prev;
-        const existingIds = new Set(prev.map(img => img.id));
-        const filler = SHOWCASE_IMAGES.filter(img => !existingIds.has(img.id)).slice(
-          0,
-          Math.max(0, MIN_GALLERY_ITEMS - prev.length)
-        );
-        return [...prev, ...filler];
-      });
+      // Keep previous state if sync fails
     }
-  }, []);
+  }, [currentUser]);
 
   useEffect(() => {
     syncGallery();
@@ -170,11 +161,14 @@ const App: React.FC = () => {
     }
   };
 
-  const handleLike = (image: ImageItem) => {
+  const handleLike = async (image: ImageItem) => {
     if (!currentUser) {
       setIsAuthModalOpen(true);
       return;
     }
+    
+    // Optimistic update
+    const previousImages = [...images];
     setImages(prev => prev.map(img => {
       if (img.id === image.id) {
         const isLiked = !!img.isLikedByCurrentUser;
@@ -186,6 +180,14 @@ const App: React.FC = () => {
       }
       return img;
     }));
+
+    try {
+        await toggleLike(image.id, currentUser.employeeId);
+    } catch (e) {
+        console.error("Like failed", e);
+        setImages(previousImages); // Revert
+        alert("操作失败");
+    }
   };
 
   const handleGenerateSimilar = (params: ImageGenerationParams) => {

@@ -20,3 +20,19 @@ export const fetchGallery = async (authorId?: string): Promise<ImageItem[]> => {
   const data: GalleryResponse = await response.json();
   return data.images ?? [];
 };
+
+export const toggleLike = async (imageId: string, userId: string): Promise<ImageItem> => {
+  if (API_BASE_URL === Z_IMAGE_DIRECT_BASE_URL) {
+      throw new Error("Cannot like images in direct mode");
+  }
+  const response = await fetch(`${API_BASE_URL}/likes/${imageId}?userId=${userId}`, {
+      method: 'POST',
+  });
+
+  if (!response.ok) {
+      const errorText = await response.text();
+      throw new Error(`Like failed (${response.status}): ${errorText}`);
+  }
+
+  return await response.json();
+};

@@ -17,6 +17,7 @@ export interface ImageItem extends ImageGenerationParams {
   // New fields for community features
   authorId?: string; // The 8-digit employee ID
   likes: number;
+  likedBy?: string[]; // List of user IDs who liked this image
   isLikedByCurrentUser?: boolean; // UI state
   
   isMock?: boolean; // True if it's a static showcase image