"""Add backup config columns to system_settings table.

Follow-up to 0130: the backup feature (10b1f83) added backup_interval,
backup_retention_days and backup_destination to schema/service/frontend
but missed model columns and this migration.

Revision ID: 0142
Revises: 0141
"""

import sqlalchemy as sa

from alembic import op

revision = "0142"
down_revision = "0141"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.add_column(
        "system_settings",
        sa.Column("backup_interval", sa.String(20), nullable=False, server_default="daily"),
    )
    op.add_column(
        "system_settings",
        sa.Column("backup_retention_days", sa.Integer(), nullable=False, server_default="7"),
    )
    op.add_column(
        "system_settings",
        sa.Column("backup_destination", sa.String(20), nullable=False, server_default="local"),
    )


def downgrade() -> None:
    op.drop_column("system_settings", "backup_destination")
    op.drop_column("system_settings", "backup_retention_days")
    op.drop_column("system_settings", "backup_interval")