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"""
add timetable_type to dag table for filtering.

Revision ID: e79fc784f145
Revises: 0b112f49112d
Create Date: 2026-01-04 14:36:04.648869

"""

from __future__ import annotations

import sqlalchemy as sa
from alembic import op

# revision identifiers, used by Alembic.
revision = "e79fc784f145"
down_revision = "0b112f49112d"
branch_labels = None
depends_on = None
airflow_version = "3.2.0"


def upgrade():
    """Apply add timetable_type to dag table for filtering."""
    from airflow.migrations.utils import disable_sqlite_fkeys

    with disable_sqlite_fkeys(op):
        with op.batch_alter_table("dag", schema=None) as batch_op:
            batch_op.add_column(sa.Column("timetable_type", sa.String(length=255)))

        op.execute("UPDATE dag SET timetable_type = '' WHERE timetable_type IS NULL")

        with op.batch_alter_table("dag", schema=None) as batch_op:
            batch_op.alter_column("timetable_type", existing_type=sa.String(length=255), nullable=False)


def downgrade():
    """Unapply add timetable_type to dag table for filtering."""
    from airflow.migrations.utils import disable_sqlite_fkeys

    with disable_sqlite_fkeys(op):
        with op.batch_alter_table("dag", schema=None) as batch_op:
            batch_op.drop_column("timetable_type")
