backend/models.py

from sqlalchemy import Column, Integer, String, Boolean, ForeignKey, JSON
from sqlalchemy.orm import relationship
from backend.database import Base

class User(Base):
    __tablename__ = "users"

    id = Column(Integer, primary_key=True, index=True)
    username = Column(String, unique=True, index=True)
    email = Column(String, unique=True, index=True)
    hashed_password = Column(String)
    is_admin = Column(Boolean, default=False)

class Test(Base):
    __tablename__ = "tests"

    id = Column(Integer, primary_key=True, index=True)
    title = Column(String, index=True)
    description = Column(String)
    created_by = Column(Integer, ForeignKey("users.id"))

    questions = relationship("Question", back_populates="test")

class Question(Base):
    __tablename__ = "questions"

    id = Column(Integer, primary_key=True, index=True)
    test_id = Column(Integer, ForeignKey("tests.id"))
    question_text = Column(String)
    options = Column(JSON)  # List of strings
    correct_answer = Column(String)

    test = relationship("Test", back_populates="questions")

class UserTestResult(Base):
    __tablename__ = "user_test_results"

    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"))
    test_id = Column(Integer, ForeignKey("tests.id"))
    score = Column(Integer)
    answers = Column(JSON)  # Map of question_id to selected_option