"""The alert each queued email carries, as it was when it fired (#5507), so
an email written when its 2-minute window closes says what the alert said.

Revision ID: 0043_outbox_alert_words
Revises: 0042_email_outbox
Create Date: 2026-10-09
"""
from typing import Sequence, Union
from alembic import op
import sqlalchemy as sa

revision: str = "0043_outbox_alert_words"
down_revision: Union[str, None] = "0042_email_outbox"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    # No row links an alert yet (#5506 shipped the table unused), so the
    # empty default is only for the ALTER.
    op.add_column("email_outbox_events",
                  sa.Column("alert_json", sa.Text, nullable=False, server_default="{}"))


def downgrade() -> None:
    op.drop_column("email_outbox_events", "alert_json")