"""add watch directory columns to documents

Revision ID: 0003
Revises: 0002
Create Date: 2026-04-18

"""
from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op

revision: str = "0003"
down_revision: Union[str, None] = "0002"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.add_column("documents", sa.Column("source", sa.String(16), nullable=False, server_default="upload"))
    op.add_column("documents", sa.Column("watch_path", sa.String(), nullable=True))
    op.add_column("documents", sa.Column("suggested_folder", sa.String(128), nullable=True))
    op.add_column("documents", sa.Column("suggested_filename", sa.String(500), nullable=True))


def downgrade() -> None:
    op.drop_column("documents", "suggested_filename")
    op.drop_column("documents", "suggested_folder")
    op.drop_column("documents", "watch_path")
    op.drop_column("documents", "source")