🐛 Fixed multiple accept/deny of friend request

app/main.py

@@ -243,12 +243,19 @@ async def delete_friend(id: str, current_user: User = Depends(get_current_user))
 )
 async def accept_friend(id: str, current_user: User = Depends(get_current_user)):
     try:
-        result = friends_collection.update_one({"_id": ObjectId(id)}, {"$set": {"status": "accepted"}})
+        check_friend = friends_collection.find_one({"_id": ObjectId(id)})
+        if check_friend is None: friend_not_found()
+        
+        if check_friend["status"] != "pending":
+            raise HTTPException(
+                status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
+                detail="Friend request already accepted"
+            )
+        
+        friends_collection.update_one({"_id": ObjectId(id)}, {"$set": {"status": "accepted"}})
     except bson.errors.InvalidId:
         objectid_misformatted()
     
-    if result.matched_count == 0: friend_not_found()
-    
     return {"message": "Friend request accepted"}
 
 @app.post(