Phase 3 (fat refactor). extract_metadata now tries Memories'
HTTP API GET /index.php/apps/memories/api/image/info/{fileid}
before spawning ExifTool. Replaces ~80–100 ms of subprocess work
with a ~1–2 ms HTTP call for ongoing imports.
What we kept from the ExifTool path:
- Mule's date-fallback chain (SubSec → DateTimeOriginal → CreateDate
→ MediaCreateDate → TrackCreateDate → filename/folder guess → mtime).
Memories' single `datetaken` field falls back to mtime, which would
silently mis-date the 6k+ photos in our library that depend on
filename-encoded dates. _apply_memories_metadata re-applies the
same chain against Memories' `exif` dict.
- taken_at_source='manual' is still sacred — never overwritten.
- has_date_warning recomputed against the resolved taken_at.
Format compat: Memories' `exif` dict uses plain key names (Make,
Model, ISO, FNumber, DateTimeOriginal, GPSLatitude, ...) while the
old ExifTool path stored `EXIF:Make` etc. PhotoInfoPanel only reads
the four keys above and Memories has them in plain form, so the info
panel keeps working without an adapter. Full-text search (ILIKE on
exif_json) still hits camera names, lens names, dates etc. — value
content is identical, only the keys differ.
Fallback paths preserved:
- 404 from Memories (file not yet indexed by NC's scan, brand-new
upload): falls through to ExifTool.
- non-NC photos (no nextcloud_fileid or no app password): ExifTool.
- NC HTTP error or parse failure: ExifTool.
CSRF: Memories' /api/image/info/{id} is CSRF-checked. We send
`OCS-APIRequest: true` to bypass it, the same way the OCS clients
do. Auth is the user's existing Fernet-encrypted app password.
Verified end-to-end against:
- IMG_4954.DNG (real DNG with GPS): width/height/lat/lon/taken_at
match the previous ExifTool output exactly; exif_json switched
to Memories format (Make/Model/ISO/FNumber preserved).
- 20210817_000000_4A6737B6.jpg (path-dated archive photo): taken_at
remained 2021-08-17 from the filename heuristic, source='path'.
The `enabled` state of the Memories app is now required for new
imports to skip ExifTool — left enabled in commit 0a4c8d... (NC
admin action; not in this commit).
2a5759cc8d