from sqlalchemy.orm import Mapped, mapped_column, relationship, declarative_base
from sqlalchemy import ForeignKey, Table, Column, String, UniqueConstraint

from .common import Base


def make_link_table(base: declarative_base, left: str, right: str, table_name="") -> Table:
    link_table = Table(
        table_name or f"{left}__{right}",
        base.metadata,
        Column(f"{left}_id", ForeignKey(f"{left}.id", ondelete='CASCADE', onupdate='CASCADE'), primary_key=True),
        Column(f"{right}_id", ForeignKey(f"{right}.id", ondelete='CASCADE', onupdate='CASCADE'), primary_key=True),
    )
    return link_table


user__department = make_link_table(Base, 'user', 'department')
user__manage_department = make_link_table(Base, 'user', 'department',"user__manage_department")
user__post = make_link_table(Base, 'user', 'post')
user__auth_rule = make_link_table(Base, 'user', 'auth_rule')
department__auth_rule = make_link_table(Base, 'department', 'auth_rule')
post__auth_rule = make_link_table(Base, 'post', 'auth_rule')