from datetime import datetime
from enum import Enum as PyEnum
from uuid import uuid4

from sqlalchemy import Boolean, Column, DateTime, Enum, String
from sqlalchemy.dialects.postgresql import UUID

from app.database import Base


class AdminRole(str, PyEnum):
    ADMIN = "admin"
    SUPER_ADMIN = "super_admin"
    VIEWER = "viewer"


class AdminUser(Base):
    __tablename__ = "admin_users"

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid4, index=True)
    username = Column(String(100), unique=True, nullable=False, index=True)
    email = Column(String(255), unique=True, nullable=False, index=True)
    password_hash = Column(String(255), nullable=False)
    role = Column(Enum(AdminRole), default=AdminRole.ADMIN, nullable=False)
    is_active = Column(Boolean, default=True, nullable=False)
    last_login = Column(DateTime, nullable=True)
    created_at = Column(DateTime, default=datetime.utcnow, nullable=False)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False)

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