"""
User model for the PostgreSQL database
"""
from sqlalchemy import Column, String, Boolean, DateTime, func, UUID
from sqlalchemy.orm import relationship
import uuid
from app import Base

class User(Base):
    """User model representing a user in the system"""
    __tablename__ = 'users'
    
    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    username = Column(String(50), unique=True, nullable=False, index=True)
    email = Column(String(100), unique=True, nullable=False, index=True)
    password_hash = Column(String(100), nullable=False)
    first_name = Column(String(50))
    last_name = Column(String(50))
    is_active = Column(Boolean, default=True)
    created_at = Column(DateTime, default=func.now())
    updated_at = Column(DateTime, default=func.now(), onupdate=func.now())
    
    # Relationships
    posts = relationship("Post", back_populates="user", cascade="all, delete-orphan")
    
    def __repr__(self):
        return f"<User(username='{self.username}', email='{self.email}')>"