from sqlalchemy import Column, Integer, String, Enum, TIMESTAMP, func
from sqlalchemy.orm import declarative_base
import enum

Base = declarative_base()

class UserRole(enum.Enum):
    user = "user"
    admin = "admin"
    superadmin = "superadmin"

class User(Base):
    __tablename__ = 'users'
    id = Column(Integer, primary_key=True, autoincrement=True)
    username = Column(String(50), unique=True, nullable=False)
    password_hash = Column(String(60), nullable=False)
    role = Column(Enum(UserRole), nullable=False, default=UserRole.user)
    created_at = Column(TIMESTAMP, server_default=func.current_timestamp())
    updated_at = Column(TIMESTAMP, server_default=func.current_timestamp(), onupdate=func.current_timestamp())

class Client(Base):
    __tablename__ = 'clients'
    uuid = Column(String(36), primary_key=True, nullable=False)
    hardware_hash = Column(String(64), nullable=False)
    location = Column(String(100), nullable=True)
    ip_address = Column(String(45), nullable=True)
    registration_time = Column(TIMESTAMP, server_default=func.current_timestamp(), nullable=False)
    last_alive = Column(TIMESTAMP, server_default=func.current_timestamp(), onupdate=func.current_timestamp(), nullable=False)