from datetime import datetime

from sqlalchemy import Boolean, Column, DateTime, Integer, String
from sqlalchemy.orm import relationship

from app.db.base import Base


class User(Base):
    __tablename__ = "users"

    id = Column(Integer, primary_key=True, index=True)
    email = Column(String, unique=True, index=True, nullable=False)
    username = Column(String, unique=True, index=True, nullable=False)
    hashed_password = Column(String, nullable=False)
    full_name = Column(String, nullable=True)
    is_active = Column(Boolean, default=True)
    is_superuser = Column(Boolean, default=False)
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)

    # Relationships
    tasks = relationship("Task", back_populates="owner")
    assigned_tasks = relationship("Task",
                                secondary="task_assignments",
                                back_populates="assignees")

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