"""drop access_token_expires_at

Revision ID: 0007_drop_access_expiry
Revises: 0006_channel_sub_id
Create Date: 2026-09-16

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa

revision: str = "0007_drop_access_expiry"
down_revision: Union[str, None] = "0006_channel_sub_id"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    # Dead column: access tokens are now cached in-process (google_oauth.py)
    # with their own expiry, so this was written but never read.
    op.drop_column("oauth_credentials", "access_token_expires_at")


def downgrade() -> None:
    op.add_column(
        "oauth_credentials",
        sa.Column("access_token_expires_at", sa.DateTime(timezone=True), nullable=True),
    )