"""add users.primary_account_id (linked investor logins)

Revision ID: e5f6a7b8c9d0
Revises: d4e5f6a7b8c9
Create Date: 2026-06-28 17:10:00.000000

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


revision: str = 'e5f6a7b8c9d0'
down_revision: Union[str, None] = 'd4e5f6a7b8c9'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    with op.batch_alter_table('users', schema=None) as batch_op:
        batch_op.add_column(
            sa.Column('primary_account_id', sa.Integer(), nullable=True)
        )
        batch_op.create_foreign_key(
            'fk_users_primary_account_id', 'users', ['primary_account_id'], ['id']
        )


def downgrade() -> None:
    with op.batch_alter_table('users', schema=None) as batch_op:
        batch_op.drop_constraint('fk_users_primary_account_id', type_='foreignkey')
        batch_op.drop_column('primary_account_id')