"""add entities.linked_user_id (link a GP entity to its investor account)

Revision ID: c9d0e1f2a3b4
Revises: b8c9d0e1f2a3
Create Date: 2026-07-01 10:45:00.000000

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


revision: str = 'c9d0e1f2a3b4'
down_revision: Union[str, None] = 'b8c9d0e1f2a3'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    with op.batch_alter_table('entities', schema=None) as batch_op:
        batch_op.add_column(sa.Column('linked_user_id', sa.Integer(), nullable=True))
    op.create_index('ix_entities_linked_user_id', 'entities', ['linked_user_id'])


def downgrade() -> None:
    op.drop_index('ix_entities_linked_user_id', table_name='entities')
    with op.batch_alter_table('entities', schema=None) as batch_op:
        batch_op.drop_column('linked_user_id')