"""revoked_at -> nullable, NULL by default

Revision ID: 086c8d206446
Revises: 40c196465541
Create Date: 2026-07-24 11:04:35.693439

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import postgresql

# revision identifiers, used by Alembic.
revision: str = '086c8d206446'
down_revision: Union[str, Sequence[str], None] = '40c196465541'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    """Upgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.alter_column('sessions', 'revoked_at',
               existing_type=postgresql.TIMESTAMP(),
               nullable=True)
    # ### end Alembic commands ###


def downgrade() -> None:
    """Downgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.alter_column('sessions', 'revoked_at',
               existing_type=postgresql.TIMESTAMP(),
               nullable=False)
    # ### end Alembic commands ###