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from fastapi import APIRouter, Depends, HTTPException, BackgroundTasks
from sqlalchemy.orm import Session
from typing import List, Dict
import asyncio
from datetime import datetime
from api.auth import get_current_user
from models import db_models
from models.schemas import QuizGenerateRequest, QuizSetResponse
from core.database import get_db, SessionLocal
from api.websocket_routes import manager
from services.quiz_service import quiz_service
from core import constants
router = APIRouter(prefix="/api/quizzes", tags=["quizzes"])
logger = logging.getLogger(__name__)
async def run_quiz_generation(set_id: int, request: QuizGenerateRequest, user_id: int):
"""Background task for quiz generation"""
db = SessionLocal()
connection_id = f"user_{user_id}"
try:
db_set = db.query(db_models.QuizSet).filter(db_models.QuizSet.id == set_id).first()
if not db_set: return
# Call AI service
quizzes_data = await quiz_service.generate_quiz(
file_key=request.file_key,
text_input=request.text_input,
difficulty=request.difficulty,
topic=request.topic,
language=request.language,
count_mode=request.count,
progress_callback=lambda p, m: asyncio.create_task(
manager.send_progress(connection_id, p, "processing", m)
)
)
if not quizzes_data:
raise Exception("AI failed to generate quiz questions")
# Save individual questions
for item in quizzes_data:
db_question = db_models.QuizQuestion(
quiz_set_id=db_set.id,
question=item.get("question", ""),
hint=item.get("hint", ""),
choices=item.get("choices", {}),
answer=str(item.get("answer", "1")),
explanation=item.get("explanation", "")
)
db.add(db_question)
db_set.status = "completed"
db.commit()
# Notify via WebSocket
await manager.send_result(connection_id, {
"type": "quiz",
"id": db_set.id,
"status": "completed",
"title": db_set.title
})
except Exception as e:
logger.error(f"Background quiz generation failed: {e}")
db_set = db.query(db_models.QuizSet).filter(db_models.QuizSet.id == set_id).first()
if db_set:
db_set.status = "failed"
db_set.error_message = str(e)
db.commit()
await manager.send_error(connection_id, f"Quiz generation failed: {str(e)}")
finally:
db.close()
@router.get("/config")
async def get_quiz_config():
"""Returns available difficulties, count options, and languages for quizzes."""
return {
"difficulties": constants.DIFFICULTIES,
"counts": constants.QUIZ_COUNTS,
"languages": constants.LANGUAGES
}
@router.post("/generate", response_model=QuizSetResponse)
async def generate_quiz(
request: QuizGenerateRequest,
background_tasks: BackgroundTasks,
current_user: db_models.User = Depends(get_current_user),
db: Session = Depends(get_db)
):
"""
Initiates quiz generation in the background.
"""
source_id = None
if request.file_key:
source = db.query(db_models.Source).filter(
db_models.Source.s3_key == request.file_key,
db_models.Source.user_id == current_user.id
).first()
if not source:
raise HTTPException(status_code=403, detail="Not authorized to access this file")
source_id = source.id
# Create initial processing record
file_base = request.file_key.split('/')[-1].rsplit('.', 1)[0] if request.file_key else None
# Priority: 1. File-based name, 2. User Topic (if not default 'string'), 3. Default timestamp
if file_base:
title = f"Quiz-{file_base}"
elif request.topic and request.topic != "string":
title = request.topic
else:
title = f"Quiz {datetime.utcnow().strftime('%Y-%m-%d %H:%M')}"
db_set = db_models.QuizSet(
title=title,
difficulty=request.difficulty,
user_id=current_user.id,
source_id=source_id,
status="processing"
)
db.add(db_set)
db.commit()
db.refresh(db_set)
# Offload to background task
background_tasks.add_task(run_quiz_generation, db_set.id, request, current_user.id)
return db_set
@router.get("/sets", response_model=List[QuizSetResponse])
async def list_quiz_sets(
current_user: db_models.User = Depends(get_current_user),
db: Session = Depends(get_db)
):
"""
Lists all quiz sets for the current user.
"""
try:
sets = db.query(db_models.QuizSet).filter(
db_models.QuizSet.user_id == current_user.id
).order_by(db_models.QuizSet.created_at.desc()).all()
return [QuizSetResponse.model_validate(s) for s in sets]
except Exception as e:
raise HTTPException(status_code=500, detail=str(e))
@router.get("/set/{set_id}", response_model=QuizSetResponse)
async def get_quiz_set(
set_id: int,
current_user: db_models.User = Depends(get_current_user),
db: Session = Depends(get_db)
):
"""
Retrieves a specific quiz set.
"""
db_set = db.query(db_models.QuizSet).filter(
db_models.QuizSet.id == set_id,
db_models.QuizSet.user_id == current_user.id
).first()
if not db_set:
raise HTTPException(status_code=404, detail="Quiz set not found")
return QuizSetResponse.model_validate(db_set)
@router.delete("/set/{set_id}")
async def delete_quiz_set(
set_id: int,
current_user: db_models.User = Depends(get_current_user),
db: Session = Depends(get_db)):
"""
Deletes a specific quiz set and all its questions.
"""
db_set = db.query(db_models.QuizSet).filter(
db_models.QuizSet.id == set_id,
db_models.QuizSet.user_id == current_user.id
).first()
if not db_set:
raise HTTPException(status_code=404, detail="Quiz set not found")
db.delete(db_set)
db.commit()
return {"message": "Quiz set and all associated questions deleted successfully"}
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