"""a link preview's insert, update or delete bumps its note's sync revision

Revision ID: 0031
Revises: 0030
Create Date: 2026-10-07

0015 made every child table bump its parent note's `sync_revision`, so a note syncs
as a whole. `note_link_previews` arrived later (0020) and was never added, and two
things have been missing on every linked device since:

- A preview fetched in the background after a save (`unfurl_queue.py`) never reached
  a device that had already pulled the note. The note's revision was assigned when
  the TEXT was saved, before the preview existed, and nothing moved it afterwards.
- A preview dismissed on the web stayed on every other device, for the same reason.

The trigger is the same function 0015 installs on the other child tables.

## Downgrade

Drops the trigger. Previews go back to not propagating; nothing is lost.
"""
from alembic import op

revision = "0031"
down_revision = "0030"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.execute(
        "CREATE TRIGGER trg_note_link_previews_bump_note AFTER INSERT OR UPDATE OR DELETE "
        "ON note_link_previews FOR EACH ROW EXECUTE PROCEDURE ts_bump_parent_note_revision()"
    )


def downgrade() -> None:
    op.execute("DROP TRIGGER IF EXISTS trg_note_link_previews_bump_note ON note_link_previews")