import enum
from datetime import datetime

from sqlalchemy import Boolean, DateTime, Enum, Integer, String, Text, BigInteger, func
from sqlalchemy.orm import Mapped, mapped_column

from app.database import Base


class AdminRole(str, enum.Enum):
    SUPERADMIN = "superadmin"
    MODERATOR = "moderator"


class Admin(Base):
    __tablename__ = "admins"

    id: Mapped[int] = mapped_column(Integer, primary_key=True)
    telegram_id: Mapped[int] = mapped_column(BigInteger, unique=True, nullable=False)
    username: Mapped[str | None] = mapped_column(String(64), nullable=True)
    role: Mapped[AdminRole] = mapped_column(
        Enum(AdminRole, name="admin_role"), default=AdminRole.MODERATOR
    )
    permissions: Mapped[str | None] = mapped_column(Text, nullable=True)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True)
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now()
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), onupdate=func.now()
    )

    def __repr__(self) -> str:
        return f"<Admin id={self.id} tg={self.telegram_id} role={self.role.value}>"