1.5

backend/app/routers/messages.py

@@ -7,6 +7,7 @@ from app.dependencies import get_db, get_current_user
 from app.models.user import User
 from app.schemas.message import MessageSend, MessagePage, MarkReadRequest
 from app.services.message_service import MessageService
+from app.services.conversation_service import ConversationService
 
 router = APIRouter()
 
@@ -27,6 +28,30 @@ async def get_messages(
         raise HTTPException(status_code=403, detail=str(e))
 
 
+@router.get("/{conversation_id}/messages/search")
+async def search_messages(
+    conversation_id: str,
+    q: str = Query(..., min_length=1, max_length=200),
+    limit: int = Query(20, ge=1, le=50),
+    user: User = Depends(get_current_user),
+    db: AsyncSession = Depends(get_db),
+):
+    """在会话内搜索消息（用户级）"""
+    # 验证成员身份
+    conv_service = ConversationService(db)
+    detail = await conv_service.get_conversation_detail(conversation_id, user.id)
+    if not detail:
+        raise HTTPException(status_code=403, detail="无权访问该会话")
+
+    service = MessageService(db)
+    results = await service.search_messages(
+        conversation_id=conversation_id,
+        keyword=q,
+        limit=limit,
+    )
+    return {"results": results}
+
+
 @router.put("/{conversation_id}/messages/{message_id}/read")
 async def mark_as_read(
     conversation_id: str,