"""Add PPR paper strip acknowledgement fields

Revision ID: 008_ppr_strip_acknowledgement
Revises: 007_ppr_activated_status
Create Date: 2026-06-15 12:00:00.000000

"""
from alembic import op
import sqlalchemy as sa

revision = '008_ppr_strip_acknowledgement'
down_revision = '007_ppr_activated_status'
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.add_column('submitted', sa.Column('acknowledged_dt', sa.DateTime(), nullable=True))
    op.add_column('submitted', sa.Column('acknowledged_by', sa.String(length=50), nullable=True))
    op.alter_column('local_flights', 'pob', existing_type=sa.Integer(), nullable=True)


def downgrade() -> None:
    op.execute("UPDATE local_flights SET pob = 1 WHERE pob IS NULL")
    op.alter_column('local_flights', 'pob', existing_type=sa.Integer(), nullable=False)
    op.drop_column('submitted', 'acknowledged_by')
    op.drop_column('submitted', 'acknowledged_dt')