from sqlalchemy import Column, Integer, String, DateTime, Enum
from sqlalchemy.sql import func
from app.db.session import Base
import enum

class UserRole(enum.Enum):
    admin = "admin"
    designer = "designer"
    operator = "operator"

class User(Base):
    __tablename__ = "users"
    id = Column(Integer, primary_key=True, index=True)
    username = Column(String(100), unique=True, nullable=False)
    email = Column(String(255), nullable=True)
    password_hash = Column(String(255), nullable=False)
    role = Column(Enum(UserRole), nullable=False)
    full_name = Column(String(255), nullable=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now())