Files
FabledCurator/backend/app/api/gallery.py
T
bvandeusen c361032554 feat(gallery): sort/group/jump by COALESCE(post.post_date, image_record.created_at) — surface migrated content at its original publish date, not FC scan date
Operator hit this 2026-05-25 after the IR tag_apply landed: ~57k images
all scanned into FC in the same week share image_record.created_at, so
the gallery timeline collapses them into a single month bucket and
scroll orders them all together at the top. Their actual publish dates
(spread over years) were already available in Post.post_date but the
gallery never read it.

Backend wire-up:
- tag_apply phase 4 now sets ImageRecord.primary_post_id when creating
  ImageProvenance (only if currently NULL — preserves the canonical
  download-time linkage set by the importer for new FC ingests).
- gallery_service.py introduces _effective_date_col() =
  COALESCE(post.post_date, image_record.created_at), used in:
    * scroll() ORDER BY + cursor WHERE clauses
    * timeline() year/month group-by
    * jump_cursor() year/month filter
    * _neighbors() prev/next ordering
- Each method LEFT OUTER JOIN Post on primary_post_id so the COALESCE
  works for images without a post (NULL on the Post side, fall back
  to created_at).
- GalleryImage gains posted_at + effective_date fields; API /gallery
  /scroll exposes both alongside the existing created_at so the UI
  can render 'Posted on X (imported Y)' if desired.
- get_image_with_tags() returns posted_at for the modal.

Cursor format unchanged — the encoded datetime is now the effective_
date (whichever column won the COALESCE) and pagination remains
consistent.

To pick up new behavior for an already-migrated IR set: re-run
/api/migrate/tag_apply on the existing manifest (phase 4 is
idempotent; the new primary_post_id assignment backfills).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-25 12:30:18 -04:00

114 lines
4.0 KiB
Python

"""Gallery API: cursor scroll, timeline, jump, image detail."""
from quart import Blueprint, jsonify, request
from ..extensions import get_session
from ..services.gallery_service import GalleryService
gallery_bp = Blueprint("gallery", __name__, url_prefix="/api/gallery")
@gallery_bp.route("/scroll", methods=["GET"])
async def scroll():
cursor = request.args.get("cursor") or None
try:
limit = int(request.args.get("limit", "50"))
except ValueError:
return jsonify({"error": "limit must be an integer"}), 400
tag_id_raw = request.args.get("tag_id")
tag_id = int(tag_id_raw) if tag_id_raw else None
post_id_raw = request.args.get("post_id")
post_id = int(post_id_raw) if post_id_raw else None
artist_id_raw = request.args.get("artist_id")
artist_id = int(artist_id_raw) if artist_id_raw else None
async with get_session() as session:
svc = GalleryService(session)
try:
page = await svc.scroll(
cursor=cursor, limit=limit, tag_id=tag_id,
post_id=post_id, artist_id=artist_id,
)
except ValueError as exc:
return jsonify({"error": str(exc)}), 400
return jsonify(
{
"images": [
{
"id": i.id,
"sha256": i.sha256,
"mime": i.mime,
"width": i.width,
"height": i.height,
"created_at": i.created_at.isoformat(),
"posted_at": i.posted_at.isoformat() if i.posted_at else None,
"effective_date": i.effective_date.isoformat(),
"thumbnail_url": i.thumbnail_url,
"artist": i.artist,
}
for i in page.images
],
"next_cursor": page.next_cursor,
"date_groups": [
{"year": y, "month": m, "image_ids": ids} for y, m, ids in page.date_groups
],
}
)
@gallery_bp.route("/timeline", methods=["GET"])
async def timeline():
tag_id_raw = request.args.get("tag_id")
tag_id = int(tag_id_raw) if tag_id_raw else None
post_id_raw = request.args.get("post_id")
post_id = int(post_id_raw) if post_id_raw else None
artist_id_raw = request.args.get("artist_id")
artist_id = int(artist_id_raw) if artist_id_raw else None
async with get_session() as session:
svc = GalleryService(session)
try:
buckets = await svc.timeline(
tag_id=tag_id, post_id=post_id, artist_id=artist_id
)
except ValueError as exc:
return jsonify({"error": str(exc)}), 400
return jsonify(
[{"year": b.year, "month": b.month, "count": b.count} for b in buckets]
)
@gallery_bp.route("/jump", methods=["GET"])
async def jump():
try:
year = int(request.args["year"])
month = int(request.args["month"])
except (KeyError, ValueError):
return jsonify({"error": "year and month query params required"}), 400
tag_id_raw = request.args.get("tag_id")
tag_id = int(tag_id_raw) if tag_id_raw else None
post_id_raw = request.args.get("post_id")
post_id = int(post_id_raw) if post_id_raw else None
artist_id_raw = request.args.get("artist_id")
artist_id = int(artist_id_raw) if artist_id_raw else None
async with get_session() as session:
svc = GalleryService(session)
try:
cursor = await svc.jump_cursor(
year=year, month=month, tag_id=tag_id,
post_id=post_id, artist_id=artist_id,
)
except ValueError as exc:
return jsonify({"error": str(exc)}), 400
return jsonify({"cursor": cursor})
@gallery_bp.route("/image/<int:image_id>", methods=["GET"])
async def image_detail(image_id: int):
async with get_session() as session:
svc = GalleryService(session)
payload = await svc.get_image_with_tags(image_id)
if payload is None:
return jsonify({"error": "not found"}), 404
return jsonify(payload)