"""User model for authentication and profiles."""

from datetime import datetime
from enum import Enum as PyEnum
from sqlalchemy import Column, String, Boolean, DateTime, Enum, Text
from sqlalchemy.orm import relationship
from uuid import uuid4
from app.database import Base


class UserRole(str, PyEnum):
    STUDENT = "student"
    INSTRUCTOR = "instructor"
    ADMIN = "admin"


class User(Base):
    __tablename__ = "users"

    id = Column(String(36), primary_key=True, default=lambda: str(uuid4()))
    email = Column(String(255), unique=True, nullable=False, index=True)
    hashed_password = Column(String(255), nullable=False)
    full_name = Column(String(255), nullable=False)
    avatar_url = Column(String(500), nullable=True)
    role = Column(Enum(UserRole), default=UserRole.STUDENT, nullable=False)
    is_active = Column(Boolean, default=True)
    is_verified = Column(Boolean, default=False)
    bio = Column(Text, nullable=True)

    # Timestamps
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
    last_login = Column(DateTime, nullable=True)

    # Relationships
    enrollments = relationship("Enrollment", back_populates="student", cascade="all, delete-orphan")
    progress_records = relationship("Progress", back_populates="student", cascade="all, delete-orphan")
    quiz_attempts = relationship("QuizAttempt", back_populates="student", cascade="all, delete-orphan")
    forum_posts = relationship("ForumPost", back_populates="author", cascade="all, delete-orphan")
    forum_comments = relationship("ForumComment", back_populates="author", cascade="all, delete-orphan")

    def __repr__(self):
        return f"<User {self.email}>"