from __future__ import annotations
from sqlalchemy import String, Boolean, Integer, ForeignKey, UniqueConstraint
from sqlalchemy.orm import Mapped, mapped_column
from app.core.db.common import CommonBase

class Role(CommonBase):
    __tablename__ = "roles"
    __table_args__ = (UniqueConstraint("name", name="uq_role_name"),)
    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    name: Mapped[str] = mapped_column(String(100), index=True)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True)

class Permission(CommonBase):
    __tablename__ = "permissions"
    __table_args__ = (UniqueConstraint("code", name="uq_permission_code"),)
    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    code: Mapped[str] = mapped_column(String(150), index=True)
    name: Mapped[str] = mapped_column(String(255), default="")
    is_active: Mapped[bool] = mapped_column(Boolean, default=True)

class RolePermission(CommonBase):
    __tablename__ = "role_permissions"
    __table_args__ = (UniqueConstraint("role_id","permission_id", name="uq_role_perm"),)
    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    role_id: Mapped[int] = mapped_column(ForeignKey("roles.id", ondelete="CASCADE"), index=True)
    permission_id: Mapped[int] = mapped_column(ForeignKey("permissions.id", ondelete="CASCADE"), index=True)

class UserRole(CommonBase):
    __tablename__ = "user_roles"
    __table_args__ = (UniqueConstraint("user_id","role_id", name="uq_user_role"),)
    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    user_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), index=True)
    role_id: Mapped[int] = mapped_column(ForeignKey("roles.id", ondelete="CASCADE"), index=True)