"""chk003 - Add default_tip_allow_custom to checkout_settings

Adds the default_tip_allow_custom boolean column to checkout_settings,
allowing merchants to control whether payers can enter a custom tip amount.

Revision ID: chk003_tip_allow_custom
Revises: chk002_adjustment_config
Create Date: 2026-04-01
"""
from typing import Union, Sequence

import sqlalchemy as sa
from alembic import op

revision: str = 'chk003_tip_allow_custom'
down_revision: Union[str, Sequence[str], None] = 'chk002_adjustment_config'
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.add_column(
        'checkout_settings',
        sa.Column('default_tip_allow_custom', sa.Boolean(), nullable=False, server_default='false'),
    )


def downgrade() -> None:
    op.drop_column('checkout_settings', 'default_tip_allow_custom')