-- Normalize `rel_path` columns to forward slashes. Windows ingest
-- historically produced a mix of `\` and `/`, which broke lookups and
-- caused spurious UNIQUE-constraint violations on re-registration.
--
-- SQLite enforces UNIQUE per-row during UPDATE, so we have to drop
-- losing duplicates BEFORE normalizing. For each table that has a
-- UNIQUE on rel_path, we delete rows whose normalized form already
-- exists in canonical (forward-slash) form — keeping the existing
-- forward-slash row as the survivor. Then a flat UPDATE finishes the
-- job for remaining backslash rows.

-- image_exif: UNIQUE(library_id, rel_path)
DELETE FROM image_exif
 WHERE rel_path LIKE '%\%'
   AND EXISTS (
       SELECT 1 FROM image_exif AS other
        WHERE other.library_id = image_exif.library_id
          AND other.rel_path = REPLACE(image_exif.rel_path, '\', '/')
          AND other.id != image_exif.id
   );
UPDATE image_exif
   SET rel_path = REPLACE(rel_path, '\', '/')
 WHERE rel_path LIKE '%\%';

-- favorites: UNIQUE(userid, rel_path)
DELETE FROM favorites
 WHERE rel_path LIKE '%\%'
   AND EXISTS (
       SELECT 1 FROM favorites AS other
        WHERE other.userid = favorites.userid
          AND other.rel_path = REPLACE(favorites.rel_path, '\', '/')
          AND other.id != favorites.id
   );
UPDATE favorites
   SET rel_path = REPLACE(rel_path, '\', '/')
 WHERE rel_path LIKE '%\%';

-- tagged_photo: UNIQUE(rel_path, tag_id)
DELETE FROM tagged_photo
 WHERE rel_path LIKE '%\%'
   AND EXISTS (
       SELECT 1 FROM tagged_photo AS other
        WHERE other.tag_id = tagged_photo.tag_id
          AND other.rel_path = REPLACE(tagged_photo.rel_path, '\', '/')
          AND other.id != tagged_photo.id
   );
UPDATE tagged_photo
   SET rel_path = REPLACE(rel_path, '\', '/')
 WHERE rel_path LIKE '%\%';

-- entity_photo_links: UNIQUE(entity_id, library_id, rel_path, role)
DELETE FROM entity_photo_links
 WHERE rel_path LIKE '%\%'
   AND EXISTS (
       SELECT 1 FROM entity_photo_links AS other
        WHERE other.entity_id = entity_photo_links.entity_id
          AND other.library_id = entity_photo_links.library_id
          AND other.role = entity_photo_links.role
          AND other.rel_path = REPLACE(entity_photo_links.rel_path, '\', '/')
          AND other.id != entity_photo_links.id
   );
UPDATE entity_photo_links
   SET rel_path = REPLACE(rel_path, '\', '/')
 WHERE rel_path LIKE '%\%';

-- video_preview_clips: UNIQUE(library_id, rel_path)
DELETE FROM video_preview_clips
 WHERE rel_path LIKE '%\%'
   AND EXISTS (
       SELECT 1 FROM video_preview_clips AS other
        WHERE other.library_id = video_preview_clips.library_id
          AND other.rel_path = REPLACE(video_preview_clips.rel_path, '\', '/')
          AND other.id != video_preview_clips.id
   );
UPDATE video_preview_clips
   SET rel_path = REPLACE(rel_path, '\', '/')
 WHERE rel_path LIKE '%\%';

-- photo_insights has no UNIQUE on rel_path (history table), so a plain
-- normalize is safe.
UPDATE photo_insights
   SET rel_path = REPLACE(rel_path, '\', '/')
 WHERE rel_path LIKE '%\%';

ANALYZE;