"""Associate documents with the knowledge space they were ingested into.

No production row exists yet (ingestion was never wired to a worker handler
until this change), so this adds the column as NOT NULL directly rather than
nullable-then-backfill-then-constrain: there is nothing to backfill.

Deliberately no FK to control.spaces: content.documents.workspace_id already
has no FK to control.workspaces (control and content are separate bounded
contexts in this schema, and cross-schema FKs have no other precedent in
this codebase), so space_id follows the same established convention --
indexed, not foreign-key-enforced.
"""

from __future__ import annotations

import sqlalchemy as sa
from alembic import op

revision = "0014_document_space"
down_revision = "0013_generation_profiles"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.add_column(
        "documents",
        sa.Column("space_id", sa.Uuid(), nullable=False),
        schema="content",
    )
    op.create_index(
        "ix_content_documents_space",
        "documents",
        ["space_id"],
        schema="content",
    )


def downgrade() -> None:
    op.drop_index("ix_content_documents_space", table_name="documents", schema="content")
    op.drop_column("documents", "space_id", schema="content")