Bug fixes (double submission, escaping of ><! in answers, further redis docs

classquiz/socket_server/__init__.py

@@ -25,7 +25,11 @@ from classquiz.db.models import (
 from pydantic import BaseModel, ValidationError
 from datetime import datetime
 
-from classquiz.socket_server.helpers import check_answer, check_captcha
+from classquiz.socket_server.helpers import (
+    check_answer,
+    check_captcha,
+    has_already_answered,
+)
 from .models import (
     RejoinGameData,
     JoinGameData,
@@ -286,7 +290,12 @@ async def submit_answer(sid: str, data: dict):
         return
     data.answer = str(data.answer)
     session = await get_session(sid, sio)
+    question_index = int(float(data.question_index))
     game_data = await PlayGame.get_from_redis(session["game_pin"])
+    already_answered = await has_already_answered(session["game_pin"], question_index, session["username"])
+    if already_answered:
+        await sio.emit("already_replied", room=sid)
+        return
     (answer_right, answer) = check_answer(game_data, data)
     latency = int(float(session["ping"]))
     time_q_started = datetime.fromisoformat(await redis.get(f"game:{session['game_pin']}:current_time"))
@@ -295,7 +304,7 @@ async def submit_answer(sid: str, data: dict):
     if answer_right:
         score = calculate_score(
             abs(diff) - latency,
-            int(float(game_data.questions[int(float(data.question_index))].time)),
+            int(float(game_data.questions[question_index].time)),
         )
         if score > 1000:
             score = 1000

classquiz/socket_server/helpers.py

@@ -10,6 +10,7 @@ from classquiz.db.models import (
     ABCDQuizAnswer,
     VotingQuizAnswer,
     RangeQuizAnswer,
+    AnswerDataList,
 )
 from classquiz.socket_server.models import SubmitAnswerData
 from .models import SubmitAnswerDataOrderType
@@ -131,3 +132,12 @@ def check_check_question(answer: str, answers: list[ABCDQuizAnswer]) -> bool:
         if a.right:
             correct_string += str(i)
     return bool(correct_string == answer)
+
+
+async def has_already_answered(game_pin: str, q_index: int, username: str) -> bool:
+    answers = await AnswerDataList.get_redis_or_empty(game_pin, q_index)
+    if answers is None:
+        return False
+    else:
+        answers = list(filter(lambda a: a.username == username, answers.root))
+        return len(answers) > 0