from __future__ import annotations

from datetime import datetime

from sqlalchemy import BigInteger, DateTime, ForeignKey, String
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.models.base import Base, TimestampMixin


class Role(Base, TimestampMixin):
    __tablename__ = "sys_role"

    id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
    code: Mapped[str] = mapped_column(String(50), unique=True, index=True, nullable=False)
    name: Mapped[str] = mapped_column(String(50), nullable=False)
    remark: Mapped[str | None] = mapped_column(String(255), nullable=True)

    admins: Mapped[list["Admin"]] = relationship("Admin", back_populates="role")


class Admin(Base, TimestampMixin):
    __tablename__ = "sys_admin"

    id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
    username: Mapped[str] = mapped_column(String(50), unique=True, index=True, nullable=False)
    password: Mapped[str] = mapped_column(String(255), nullable=False)
    name: Mapped[str] = mapped_column(String(50), nullable=False)
    role_id: Mapped[int | None] = mapped_column(ForeignKey("sys_role.id"), nullable=True)
    status: Mapped[int] = mapped_column(default=1, nullable=False)
    last_login_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)

    role: Mapped[Role | None] = relationship("Role", back_populates="admins")