fix: bố cục lại cách hiển thị thông tin ảnh

backend/src/main.ts

@@ -1723,6 +1723,52 @@ class PhotoController {
       }
     });
   }
+
+  @Post(':id/toggle-like')
+  @UseGuards(JwtAuthGuard)
+  async toggleLikePhoto(@Param('id', ParseUUIDPipe) id: string, @Req() req: any) {
+    const userId = req.user.id;
+    const photo = await this.prisma.photo.findUnique({
+      where: { id }
+    });
+
+    if (!photo) {
+      throw new NotFoundException('Không tìm thấy ảnh.');
+    }
+
+    const currentMetadata = (photo.metadata as any) || {};
+    const likedUserIds = Array.isArray(currentMetadata.likedUserIds)
+      ? currentMetadata.likedUserIds
+      : [];
+
+    const index = likedUserIds.indexOf(userId);
+    let updatedLikedUserIds = [...likedUserIds];
+
+    if (index > -1) {
+      // Unlike
+      updatedLikedUserIds.splice(index, 1);
+    } else {
+      // Like
+      updatedLikedUserIds.push(userId);
+    }
+
+    const updatedMetadata = {
+      ...currentMetadata,
+      likedUserIds: updatedLikedUserIds
+    };
+
+    return this.prisma.photo.update({
+      where: { id },
+      data: {
+        metadata: updatedMetadata
+      },
+      include: {
+        uploader: {
+          select: { id: true, name: true }
+        }
+      }
+    });
+  }
 }
 
 @UseGuards(JwtAuthGuard)