from sqlalchemy import String, Integer, SmallInteger, Text
from sqlalchemy.orm import Mapped, mapped_column, relationship
from sqlalchemy import Enum, JSON
from .base import Base, TimestampMixin, MYSQL_TABLE_ARGS
from .enums import PermissionTypeEnum, StatusEnum


class Permission(Base, TimestampMixin):
    __tablename__ = "sys_permission"
    __table_args__ = MYSQL_TABLE_ARGS

    perm_id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    parent_id: Mapped[int | None] = mapped_column(Integer, nullable=True, index=True)
    name: Mapped[str] = mapped_column(String(100), nullable=False)
    code: Mapped[str] = mapped_column(String(100), unique=True, nullable=False)
    perm_type: Mapped[PermissionTypeEnum] = mapped_column(
        Enum(PermissionTypeEnum, native_enum=False, values_callable=lambda x: [e.value for e in x]),
        nullable=False,
    )
    level: Mapped[int] = mapped_column(Integer, nullable=False)
    path: Mapped[str | None] = mapped_column(String(255))
    icon: Mapped[str | None] = mapped_column(String(100))
    sort_order: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
    is_visible: Mapped[int] = mapped_column(SmallInteger, default=1, nullable=False)
    status: Mapped[int] = mapped_column(Integer, default=StatusEnum.ENABLED, nullable=False)
    description: Mapped[str | None] = mapped_column(Text)
    meta: Mapped[dict | None] = mapped_column(JSON)

    roles = relationship("RolePermission", back_populates="permission", cascade="all, delete-orphan")