Files
mule-image/backend/app/routers/library.py
root 339e1be510 feat: hide-from-views flag on folders
Adds a per-folder "hide from views" toggle so noisy subtrees
(screenshots, WhatsApp dumps, work archives) can be excluded from
cross-cutting views without losing indexing. Photos under a hidden
folder are still scanned, thumbnailed, embedded, OCR'd, face-
extracted — they just stop appearing in All Photos, Rated, Colors,
Map, Tags, People, Search, Duplicates, and the sidebar counts.
Navigating directly into the folder still shows every photo.

Schema (migration 0007_folder_hidden):
- folders.is_hidden   user-set toggle, default false
- photos.is_hidden    denormalized effective flag (true iff any
                      ancestor folder is hidden), indexed so cross-
                      cutting queries stay on the existing planner
                      paths

The denorm is maintained by two paths:
- The scanner walks the ancestry chain on insert, with a per-scan
  memoized cache so each folder is resolved once per scan.
- POST /api/v1/folders/{id}/hide flips folders.is_hidden and runs a
  WITH RECURSIVE CTE to recompute every folder's effective state in
  one query, then bulk-updates photos WHERE IS DISTINCT FROM. Runs
  in ~10 ms on a 13k-photo library.

Filters added (cross-cutting queries):
- /library/stats — every sidebar badge via a shared `visible` filter
- /photos (list) — only when neither folder_id nor heap_id is set;
  folder browse and heap browse always show everything
- /photos/map
- /library/duplicates/groups
- /folders/tree photo_count subquery
- /tags count_subq (drives Tags + People sidebar counts)
- services/duplicates.regroup_duplicates (so hidden dupes never
  contaminate the Duplicates view)
- services/search.hybrid_search — both semantic (pgvector) and FTS
  legs join photos so rankings don't include hidden results

Intentionally NOT filtered:
- /photos?folder_id=X and /photos?heap_id=X (user-intentional browse)
- /library/maintenance/pipeline-stats (tracks real worker state)
- cleanup service (disk-level ops, not views)

Frontend:
- sourceFolders.setHidden(id, hidden) API client method
- FolderTreeNode.is_hidden carried through the tree into TreeItem
- LeftSidebar kebab menu: "Hide from views" / "Show in views" with a
  mutation that invalidates folders, photos, stats, and tags caches
- Hidden folder rows swap the Folder icon for EyeOff and render the
  label italic/muted so the state is visible at a glance

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-11 10:55:25 +02:00

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"""
Library API router for stats, scanning, and maintenance.
The /maintenance/* endpoints are surfaced through the frontend Settings
panel. They're intentionally idempotent and operate by re-queueing the
existing Celery tasks rather than doing any heavy lifting in the
request thread.
"""
import logging
import os
import shutil
from typing import List, Optional
from fastapi import APIRouter, Depends
from pydantic import BaseModel, Field
from sqlalchemy import select, func, update
from sqlalchemy.ext.asyncio import AsyncSession
from app.database import get_db
from app.models import Photo
logger = logging.getLogger(__name__)
router = APIRouter()
# Media types we accept in the regenerate-thumbnails request body. Mirrors
# the values produced by `app.tasks.scan.get_media_type`.
_VALID_MEDIA_TYPES = {'photo', 'raw', 'heic', 'video'}
@router.get("/stats")
async def get_library_stats(db: AsyncSession = Depends(get_db)):
"""Get library statistics + per-section counts. Each section count
matches the filter the sidebar applies when you click it, so the
sidebar badges and the timeline below them stay in sync.
- all_photos: non-discarded photos + videos (matches the All
Photos section's default filter)
- rated: non-discarded with rating >= 1
- colored: non-discarded with a color_label set (matches the
Colors grouped view's labeled buckets)
- duplicates: non-discarded with is_duplicate = true
- discarded: is_discarded = true
- total_size: raw bytes across every row, including discarded
"""
# Every sidebar badge runs against this filter. `not_visible` is the
# inverse: a photo is visible iff it's neither discarded nor hidden
# (marked hidden-from-views via a folder toggle). Kept as a single
# expression so every sub-count below applies it identically.
visible = (Photo.is_discarded.is_(False)) & (Photo.is_hidden.is_(False))
all_photos_count = (
await db.execute(select(func.count(Photo.id)).where(visible))
).scalar() or 0
rated_count = (
await db.execute(
select(func.count(Photo.id)).where(visible, Photo.rating >= 1)
)
).scalar() or 0
colored_count = (
await db.execute(
select(func.count(Photo.id)).where(
visible, Photo.color_label.is_not(None)
)
)
).scalar() or 0
with_gps_count = (
await db.execute(
select(func.count(Photo.id)).where(
visible, Photo.latitude.is_not(None)
)
)
).scalar() or 0
duplicates_count = (
await db.execute(
select(func.count(Photo.id)).where(
visible, Photo.is_duplicate.is_(True)
)
)
).scalar() or 0
discarded_count = (
await db.execute(
select(func.count(Photo.id)).where(Photo.is_discarded.is_(True))
)
).scalar() or 0
# Legacy split (kept for the existing /stats consumers).
photo_count = (
await db.execute(
select(func.count(Photo.id)).where(
Photo.media_type.in_(['photo', 'heic', 'raw'])
)
)
).scalar() or 0
video_count = (
await db.execute(
select(func.count(Photo.id)).where(Photo.media_type == 'video')
)
).scalar() or 0
size = (await db.execute(select(func.sum(Photo.file_size)))).scalar() or 0
return {
"all_photos": all_photos_count,
"rated": rated_count,
"colored": colored_count,
"with_gps": with_gps_count,
"duplicates": duplicates_count,
"discarded": discarded_count,
"total_photos": photo_count,
"total_videos": video_count,
"total_size": size,
"total_size_gb": round(size / (1024**3), 2) if size else 0,
}
@router.post("/scan")
async def trigger_scan():
"""Trigger full library re-scan"""
from app.tasks.scan import scan_all_source_roots
scan_all_source_roots.delay()
return {"status": "success", "message": "Library scan started"}
@router.post("/backfill-gps")
async def trigger_backfill_gps():
"""Re-run EXIF metadata extraction on every photo that's still missing
GPS coordinates. Useful after fixing the EXIF parser, or any time the
Map view looks emptier than expected. Returns immediately — work runs
on the Celery worker."""
from app.tasks.scan import backfill_gps
backfill_gps.delay()
return {"status": "success", "message": "GPS backfill queued"}
@router.get("/scan/status")
async def get_scan_status(db: AsyncSession = Depends(get_db)):
"""Get current scan status"""
import redis
from app.config import settings
# Connect to Redis to get scan status
r = redis.Redis.from_url(settings.redis_url)
# Get scan status from Redis (set by worker tasks)
is_scanning = r.get('scan:active') == b'true'
current_folder = r.get('scan:current_folder')
processed_files = int(r.get('scan:processed_files') or 0)
total_files = int(r.get('scan:total_files') or 0)
errors = r.lrange('scan:errors', 0, -1)
return {
"is_scanning": is_scanning,
"current_folder": current_folder.decode() if current_folder else None,
"processed_files": processed_files,
"total_files": total_files,
"errors": [e.decode() for e in errors] if errors else []
}
# ---------------------------------------------------------------------------
# Maintenance endpoints — surfaced via the Settings panel.
# ---------------------------------------------------------------------------
class RegenerateThumbnailsRequest(BaseModel):
"""Optional filters narrowing which photos get re-queued. With both
fields omitted the request resets every photo in the library."""
media_types: Optional[List[str]] = Field(
default=None,
description="Restrict to these media_type values (photo/raw/heic/video).",
)
only_failed: bool = Field(
default=False,
description="If true, only re-queue photos whose processing_status is 'failed'.",
)
only_pending: bool = Field(
default=False,
description="If true, only (re-)queue photos whose processing_status is 'pending'. "
"Useful for kicking rows that were created by a scan but never had "
"their thumbnail task picked up.",
)
@router.get("/maintenance/thumbnail-stats")
async def get_thumbnail_stats(db: AsyncSession = Depends(get_db)):
"""Counts of photos by processing_status, plus a media-type breakdown
so the Settings panel can show the user what's outstanding."""
status_rows = (
await db.execute(
select(Photo.processing_status, func.count(Photo.id)).group_by(
Photo.processing_status
)
)
).all()
media_rows = (
await db.execute(
select(Photo.media_type, func.count(Photo.id)).group_by(Photo.media_type)
)
).all()
by_status = {status or 'unknown': count for status, count in status_rows}
by_media_type = {media or 'unknown': count for media, count in media_rows}
total = sum(by_status.values())
return {
"total": total,
"pending": by_status.get('pending', 0),
"processing": by_status.get('processing', 0),
"completed": by_status.get('completed', 0),
"failed": by_status.get('failed', 0),
"by_media_type": by_media_type,
}
@router.post("/maintenance/regenerate-thumbnails")
async def regenerate_thumbnails(
body: RegenerateThumbnailsRequest,
db: AsyncSession = Depends(get_db),
):
"""Reset matching photos' on-disk thumbnail directories and re-queue
Celery thumbnail generation. Used by the Settings panel for the
'regenerate video thumbnails' / 'regenerate failed' buttons.
Files on disk are removed under /data/thumbs/<photo_id>/ so the next
request to /photos/{id}/thumb/{size} actually re-generates instead of
serving the stale placeholder.
"""
from app.tasks.thumbs import generate_thumbnails
# Validate media_types early so a typo can't silently match nothing.
media_types = body.media_types
if media_types is not None:
invalid = [m for m in media_types if m not in _VALID_MEDIA_TYPES]
if invalid:
return {
"status": "error",
"message": f"Invalid media_types: {invalid}. "
f"Allowed: {sorted(_VALID_MEDIA_TYPES)}",
}
query = select(Photo)
if media_types:
query = query.where(Photo.media_type.in_(media_types))
if body.only_failed:
query = query.where(Photo.processing_status == 'failed')
if body.only_pending:
query = query.where(Photo.processing_status == 'pending')
photos = (await db.execute(query)).scalars().all()
cleared_dirs = 0
file_errors = 0
for photo in photos:
thumb_dir = f"/data/thumbs/{photo.id}"
if os.path.isdir(thumb_dir):
try:
shutil.rmtree(thumb_dir)
cleared_dirs += 1
except OSError as e:
file_errors += 1
logger.warning(f"Could not clear thumb dir {thumb_dir}: {e}")
photo.processing_status = 'pending'
photo.processing_error = None
photo.thumb_small = None
photo.thumb_medium = None
photo.thumb_large = None
await db.commit()
# Queue celery tasks AFTER the commit so the worker sees the reset
# state when it picks the job up.
queued = 0
for photo in photos:
try:
generate_thumbnails.delay(photo.id)
queued += 1
except Exception as e:
logger.warning(f"Could not queue thumbnail job for {photo.id}: {e}")
return {
"status": "success",
"matched": len(photos),
"queued": queued,
"cleared_dirs": cleared_dirs,
"file_errors": file_errors,
"filters": {
"media_types": media_types,
"only_failed": body.only_failed,
},
}
@router.get("/maintenance/worker-status")
async def get_worker_status(db: AsyncSession = Depends(get_db)):
"""Diagnostics for the Celery worker fleet + recent task failures.
Surfaced in the Settings panel so the user can spot a stuck queue or
a worker that's gone away without tailing container logs. Returns:
- workers: list of {name, status, active, concurrency, queues}
derived from celery_app.control.inspect(). `status` is 'online'
when ping succeeds, 'unreachable' otherwise. Empty list means no
workers are responding at all (broker down, container crashed,
wrong queue routing, etc.).
- queues: per-queue depth read from Redis (LLEN of each queue key
used by celery.kombu). Mirrors what tasks are waiting to be
picked up.
- failures: aggregate count of photos with processing_status='failed'
plus the most recent N error messages so the user can see *why*
things failed without opening the DB.
- broker_ok: bool — could we even reach Redis?
"""
from app.tasks.celery import celery_app
from app.config import settings
import redis as _redis
# ----- Celery inspect (workers + active tasks) -------------------------
# Each inspect.* call is a separate broadcast-and-wait with its own
# timeout, so running them serially multiplies the wait. Fan them out
# to threads and gather, collapsing 6 × timeout into ~1 × timeout.
# Timeout dropped to 0.5s — a responsive worker answers within a few
# ms; anything past that is effectively "not responding" for the
# purposes of a settings dashboard.
import asyncio
workers: list[dict] = []
inspect_error: Optional[str] = None
try:
inspect = celery_app.control.inspect(timeout=0.5)
ping, active, reserved, scheduled, stats, active_queues = await asyncio.gather(
asyncio.to_thread(inspect.ping),
asyncio.to_thread(inspect.active),
asyncio.to_thread(inspect.reserved),
asyncio.to_thread(inspect.scheduled),
asyncio.to_thread(inspect.stats),
asyncio.to_thread(inspect.active_queues),
)
ping = ping or {}
active = active or {}
reserved = reserved or {}
scheduled = scheduled or {}
stats = stats or {}
active_queues = active_queues or {}
worker_names = set(ping) | set(active) | set(stats)
for name in sorted(worker_names):
wstats = stats.get(name) or {}
pool = wstats.get('pool') or {}
workers.append({
"name": name,
"status": "online" if name in ping else "unreachable",
"active": len(active.get(name, []) or []),
"reserved": len(reserved.get(name, []) or []),
"scheduled": len(scheduled.get(name, []) or []),
"concurrency": pool.get('max-concurrency'),
"processed": (wstats.get('total') or {}),
"queues": [q.get('name') for q in (active_queues.get(name) or [])],
"active_tasks": [
{
"id": t.get('id'),
"name": t.get('name'),
"args": t.get('args'),
"time_start": t.get('time_start'),
}
for t in (active.get(name) or [])[:10]
],
})
except Exception as e:
inspect_error = str(e)
logger.warning(f"Celery inspect failed: {e}")
# ----- Broker / queue depth --------------------------------------------
broker_ok = False
queue_depths: dict[str, int] = {}
broker_error: Optional[str] = None
try:
r = _redis.Redis.from_url(settings.redis_url, socket_timeout=1.0)
r.ping()
broker_ok = True
# `vision` is the big one — embed / classify / detect / ocr /
# extract_faces all land here, so it's where backlogs actually
# pile up. Leaving it off the dashboard made it look like the
# queue was always empty while the worker was clearly busy.
for q in ('default', 'high', 'low', 'vision'):
try:
queue_depths[q] = int(r.llen(q) or 0)
except Exception:
queue_depths[q] = 0
except Exception as e:
broker_error = str(e)
logger.warning(f"Redis broker unreachable: {e}")
# ----- Recent task failures from the photos table ----------------------
failed_total = (
await db.execute(
select(func.count(Photo.id)).where(Photo.processing_status == 'failed')
)
).scalar() or 0
recent_failed_rows = (
await db.execute(
select(
Photo.id,
Photo.filename,
Photo.media_type,
Photo.processing_error,
Photo.updated_at,
)
.where(Photo.processing_status == 'failed')
.order_by(Photo.updated_at.desc().nullslast())
.limit(20)
)
).all()
recent_failures = [
{
"photo_id": row[0],
"filename": row[1],
"media_type": row[2],
"error": (row[3] or '')[:500],
"updated_at": row[4].isoformat() if row[4] else None,
}
for row in recent_failed_rows
]
# ----- Most recent scan errors (Redis list) ----------------------------
scan_errors: list[str] = []
try:
if broker_ok:
r = _redis.Redis.from_url(settings.redis_url, socket_timeout=1.0)
raw = r.lrange('scan:errors', 0, 19) or []
scan_errors = [e.decode(errors='replace') for e in raw]
except Exception as e:
logger.debug(f"Could not read scan:errors: {e}")
return {
"broker_ok": broker_ok,
"broker_error": broker_error,
"inspect_error": inspect_error,
"workers": workers,
"worker_count": len(workers),
"queues": queue_depths,
"failures": {
"total": failed_total,
"recent": recent_failures,
},
"scan_errors": scan_errors,
}
@router.get("/maintenance/pipeline-stats")
async def get_pipeline_stats(db: AsyncSession = Depends(get_db)):
"""Per-stage progress across the ingestion pipeline.
Returns a `{stage_key: {done, total, label}}` map so the Settings
panel can render one progress bar per stage. `total` is the number
of non-discarded photos the stage is *expected* to run on — which is
every non-discarded photo for most stages, or a narrower subset when
a stage is image-only (e.g. embeddings don't run on videos).
Keep the shape flat + serialisable; the frontend turns it straight
into a list of rows without needing to know about the models.
"""
from app.config import settings as _settings
from app.models import Embedding, FaceEmbedding, OCRText
from app.models.tags import photo_tags # association Table, not a model
not_discarded = Photo.is_discarded.is_(False)
async def scalar_count(query):
return (await db.execute(query)).scalar() or 0
# Total non-discarded photos — the denominator for most stages.
total_photos = await scalar_count(
select(func.count(Photo.id)).where(not_discarded)
)
# Image-only denominator (embeddings, tags, faces, OCR, phash). We
# exclude videos because those stages either don't apply or run off
# the extracted video frame which is treated separately.
total_images = await scalar_count(
select(func.count(Photo.id)).where(
not_discarded, Photo.media_type != 'video'
)
)
completed = await scalar_count(
select(func.count(Photo.id)).where(
not_discarded, Photo.processing_status == 'completed'
)
)
with_exif = await scalar_count(
select(func.count(Photo.id)).where(
not_discarded, Photo.exif_json.is_not(None)
)
)
with_gps = await scalar_count(
select(func.count(Photo.id)).where(
not_discarded,
Photo.latitude.is_not(None),
Photo.longitude.is_not(None),
)
)
with_phash = await scalar_count(
select(func.count(Photo.id)).where(
not_discarded, Photo.phash.is_not(None)
)
)
# Embeddings: count distinct photos that have a row for the currently
# configured embedder model. A photo can have multiple model rows
# (historical re-embeds) so COUNT(DISTINCT) is the right thing here.
embedder_model = _settings.vision.embedder.name
embeddings_done = await scalar_count(
select(func.count(func.distinct(Embedding.photo_id)))
.select_from(Embedding)
.join(Photo, Photo.id == Embedding.photo_id)
.where(not_discarded, Embedding.model == embedder_model)
)
tagged_photos = await scalar_count(
select(func.count(func.distinct(photo_tags.c.photo_id)))
.select_from(photo_tags)
.join(Photo, Photo.id == photo_tags.c.photo_id)
.where(not_discarded)
)
ocr_done = await scalar_count(
select(func.count(func.distinct(OCRText.photo_id)))
.select_from(OCRText)
.join(Photo, Photo.id == OCRText.photo_id)
.where(not_discarded)
)
# Faces: photos that have at least one face_embeddings row. A photo
# with no faces legitimately finishes face extraction with zero rows,
# so this undercounts by exactly "images with no visible people". We
# surface the photo-with-faces count rather than "images scanned for
# faces" because the latter isn't tracked anywhere.
faces_photos = await scalar_count(
select(func.count(func.distinct(FaceEmbedding.photo_id)))
.select_from(FaceEmbedding)
.join(Photo, Photo.id == FaceEmbedding.photo_id)
.where(not_discarded)
)
face_rows = await scalar_count(select(func.count(FaceEmbedding.id)))
face_clusters = await scalar_count(
select(func.count(func.distinct(FaceEmbedding.cluster_id)))
.where(FaceEmbedding.cluster_id.is_not(None))
)
duplicate_groups = await scalar_count(
select(func.count(func.distinct(Photo.duplicate_group_id))).where(
not_discarded, Photo.duplicate_group_id.is_not(None)
)
)
duplicate_members = await scalar_count(
select(func.count(Photo.id)).where(
not_discarded, Photo.duplicate_group_id.is_not(None)
)
)
# Ordered list so the frontend renders stages in pipeline order
# without needing to know the sequence itself.
stages = [
{
"key": "thumbnails",
"label": "Thumbnails & pHash",
"done": completed,
"total": total_photos,
"hint": "Generated on scan. Unlocks every downstream stage.",
},
{
"key": "exif",
"label": "EXIF metadata",
"done": with_exif,
"total": total_photos,
"hint": "Camera, lens, capture time. Required for GPS + taken_at.",
},
{
"key": "gps",
"label": "GPS coordinates",
"done": with_gps,
"total": total_photos,
"hint": "Subset of EXIF. Drives the map view; many photos legitimately have none.",
"partial": True, # not every photo is expected to have GPS
},
{
"key": "phash",
"label": "Perceptual hashes",
"done": with_phash,
"total": total_images,
"hint": "Feeds duplicate detection.",
},
{
"key": "embeddings",
"label": f"Embeddings ({embedder_model})",
"done": embeddings_done,
"total": total_images,
"hint": "Semantic search + content classification.",
},
{
"key": "tags",
"label": "Object tags (YOLO)",
"done": tagged_photos,
"total": total_images,
"hint": "Auto-generated object labels. Not every photo has a detectable object.",
"partial": True,
},
{
"key": "ocr",
"label": "OCR text",
"done": ocr_done,
"total": total_images,
"hint": "Extracted text from screenshots / documents. Many photos have none.",
"partial": True,
},
{
"key": "faces",
"label": "Face detection",
"done": faces_photos,
"total": total_images,
"hint": f"{face_rows} face rows detected across {faces_photos} photos.",
"partial": True,
},
{
"key": "face_clusters",
"label": "Face clusters",
"done": face_clusters,
"total": face_clusters, # no meaningful "total" — it's just the current count
"hint": "Built by recluster_faces. Run it after backfill to populate the People view.",
"standalone": True,
},
{
"key": "duplicates",
"label": "Duplicate groups",
"done": duplicate_groups,
"total": duplicate_groups, # same — current count, not a progress ratio
"hint": f"{duplicate_members} photos in {duplicate_groups} groups. Run regroup_duplicates after new imports.",
"standalone": True,
},
]
return {
"total_photos": total_photos,
"total_images": total_images,
"embedder_model": embedder_model,
"stages": stages,
}
@router.get("/maintenance/missing-stats")
async def get_missing_stats():
"""Count photos whose files no longer exist on disk under a mounted
source root. Surfaced in Settings so the user can see a number before
pulling the trigger on prune-missing. Cheap enough to call freely."""
from app.services.cleanup import prune_missing_photos
return await prune_missing_photos(dry_run=True)
@router.post("/maintenance/prune-missing")
async def run_prune_missing():
"""Actually delete the orphaned photo rows reported by /missing-stats.
Common cause: PHOTO_DIRS in .env was repointed at a different library
leaving every old row dangling. Skips any photo whose source root
isn't currently mounted (almost always means an unmounted drive)."""
from app.services.cleanup import prune_missing_photos
try:
return {"status": "success", **(await prune_missing_photos(dry_run=False))}
except Exception as e:
logger.error(f"Prune missing failed: {e}")
return {"status": "error", "message": str(e)}
@router.post("/maintenance/cleanup")
async def run_data_integrity_cleanup():
"""Re-run the source-roots / folders / photos data-integrity cleanup
that normally only runs on backend startup. Idempotent."""
from app.services.cleanup import cleanup_data_integrity
try:
await cleanup_data_integrity()
return {"status": "success"}
except Exception as e:
logger.error(f"Manual cleanup failed: {e}")
return {"status": "error", "message": str(e)}
# ─────────────────────────────────────────────────────────────────────────
# Duplicate detection
# ─────────────────────────────────────────────────────────────────────────
@router.get("/duplicates/groups")
async def get_duplicate_groups(db: AsyncSession = Depends(get_db)):
"""Return every duplicate group with its members.
Drives the frontend grouped grid view in the Duplicates section. One
SQL query, bucketed in Python — no N+1, no per-member fetch. Groups
are sorted by member_count DESC then earliest taken_at DESC so the
biggest / most recent clusters bubble to the top.
Each group also carries a `reason` field:
* "exact" — every member shares the same SHA-256 (true byte
duplicates that the perceptual hash trivially caught)
* "similar" — members differ at the byte level but match perceptually
"""
rows = (
await db.execute(
select(
Photo.id,
Photo.filename,
Photo.taken_at,
Photo.file_size,
Photo.width,
Photo.height,
Photo.thumb_small,
Photo.file_hash,
Photo.folder_id,
Photo.media_type,
Photo.duplicate_group_id,
)
.where(Photo.duplicate_group_id.is_not(None))
.where(Photo.is_discarded.is_(False))
.where(Photo.is_hidden.is_(False))
.order_by(Photo.duplicate_group_id)
)
).all()
# Bucket members by group_id.
groups: dict[str, list[dict]] = {}
for row in rows:
member = {
"id": row[0],
"filename": row[1],
"taken_at": row[2].isoformat() if row[2] else None,
"file_size": row[3],
"width": row[4],
"height": row[5],
"thumb_small": row[6],
"file_hash": row[7],
"folder_id": row[8],
"media_type": row[9],
}
groups.setdefault(row[10], []).append(member)
def earliest(g: list[dict]) -> str:
# Used as a secondary sort key. Photos with no taken_at sort last
# by returning a far-future sentinel.
taken = [m["taken_at"] for m in g if m["taken_at"]]
return min(taken) if taken else "9999"
out = []
for group_id, members in groups.items():
if len(members) < 2:
# Defensive: a regroup race could leave a singleton briefly.
# Skip it so the UI never shows a "group of 1".
continue
# exact iff every member shares the same non-null file_hash
# (true byte-identical copies that pHash also caught). Anything
# else — different hashes, missing hashes — counts as "similar".
all_hashes = [m["file_hash"] for m in members]
reason = (
"exact"
if len(set(all_hashes)) == 1 and all_hashes[0] is not None
else "similar"
)
out.append({
"group_id": group_id,
"member_count": len(members),
"reason": reason,
"members": members,
})
out.sort(key=lambda g: (-g["member_count"], earliest(g["members"])))
return {
"groups": out,
"total_groups": len(out),
"total_members": sum(g["member_count"] for g in out),
}
@router.post("/maintenance/regroup-duplicates")
async def trigger_regroup_duplicates():
"""Recompute duplicate groups from current perceptual hashes.
Fires the celery `regroup_duplicates` task which walks every photo's
phash, clusters by Hamming distance, and rewrites duplicate_group_id /
is_duplicate columns. Idempotent."""
from app.tasks.thumbs import regroup_duplicates_task
try:
regroup_duplicates_task.delay()
return {"status": "queued"}
except Exception as e:
logger.error(f"Regroup queue failed: {e}")
return {"status": "error", "message": str(e)}
@router.post("/maintenance/backfill-phashes")
async def trigger_backfill_phashes():
"""Compute perceptual hashes for every photo currently missing one.
One-shot recovery path for libraries that existed before the phash
column was added — the thumbs worker computes phash for everything
new, but old rows need a backfill pass."""
from app.tasks.thumbs import backfill_phashes
try:
backfill_phashes.delay()
return {"status": "queued"}
except Exception as e:
logger.error(f"Backfill queue failed: {e}")
return {"status": "error", "message": str(e)}