from pydantic import BaseModel
from typing import List, Optional
from datetime import datetime

class QuestionItem(BaseModel):
    question: str
    expected_answer: str
    hint: str
    difficulty: Optional[str] = "Medium"
    category: Optional[str] = "Technical"

class QuestionSetIn(BaseModel):
    resume_id: str
    requirement_id: str

class QuestionSetOut(BaseModel):
    id: str
    user_id: str
    resume_id: str
    requirement_id: str
    questions: List[QuestionItem]
    created_at: datetime