"""media storage_key index for content lookup

Revision ID: b7d2e9f4a1c6
Revises: f1c4a8e2d6b3
Create Date: 2026-10-28 01:00:00.000000

"""

from collections.abc import Sequence

from alembic import op

revision: str = "b7d2e9f4a1c6"
down_revision: str | None = "f1c4a8e2d6b3"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    op.execute(
        "CREATE INDEX ix_media_storage_key ON media (storage_key) "
        "WHERE storage_key IS NOT NULL"
    )


def downgrade() -> None:
    op.execute("DROP INDEX IF EXISTS ix_media_storage_key")