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FabledCurator/tests/test_reextract_archives.py
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feat(maintenance): re-extract archive attachments + link to post — #713 part 2
Existing PostAttachments that are actually archives (filed opaquely before the
magic-byte gate) need extracting retroactively. cleanup_service.
reextract_archive_attachments scans PostAttachments, magic-detects the archives,
and for each reconstructs the post's sidecar from the DB + re-runs attach_in_place
in a temp dir — so the members extract and re-link to the SAME post via
find_or_create_post (source_id + external_post_id). Idempotent (members dedupe by
sha256). Enqueues thumbnail+ML for new members.

Wired as a maintenance-queue Celery task (tasks/admin) + POST
/api/admin/maintenance/reextract-archives (202) + a "Re-extract archive
attachments" card in Settings → Maintenance.

Test: a zip stored under a mangled extension-less name extracts + links its
member to the post via ImageProvenance, and a second run is a no-op (idempotent).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-06 14:43:26 -04:00

92 lines
2.9 KiB
Python

"""#713 part 2: re-extract archive PostAttachments that were filed opaquely
(magic-byte gate missed them) and link their members to the post."""
import hashlib
import io
import zipfile
import pytest
from PIL import Image
from sqlalchemy import select
from backend.app.models import (
Artist,
ImageProvenance,
ImageRecord,
Post,
PostAttachment,
Source,
)
from backend.app.services import cleanup_service
pytestmark = pytest.mark.integration
def _jpeg(color, size=256):
buf = io.BytesIO()
Image.new("RGB", (size, size), color).save(buf, "JPEG")
return buf.getvalue()
def test_reextract_links_archive_members_to_post(db_sync, tmp_path, monkeypatch):
from backend.app.tasks import ml as ml_mod
from backend.app.tasks import thumbnail as thumb_mod
# No broker in this path — the post-import enqueue is best-effort anyway.
monkeypatch.setattr(thumb_mod.generate_thumbnail, "delay", lambda *a, **k: None)
monkeypatch.setattr(ml_mod.tag_and_embed, "delay", lambda *a, **k: None)
images_root = tmp_path / "images"
images_root.mkdir()
artist = Artist(name="Bob", slug="bob")
db_sync.add(artist)
db_sync.flush()
source = Source(
artist_id=artist.id, platform="patreon",
url="https://patreon.com/bob", enabled=True, config_overrides={},
)
db_sync.add(source)
db_sync.flush()
post = Post(
source_id=source.id, artist_id=artist.id, external_post_id="59102952",
post_url="https://www.patreon.com/posts/59102952",
)
db_sync.add(post)
db_sync.flush()
# A real zip stored under a mangled / extension-less name (the failure case).
store_dir = images_root / "attachments" / "abc"
store_dir.mkdir(parents=True)
arc = store_dir / "01_https___www.patreon.com_media-u_v3_59102952"
with zipfile.ZipFile(arc, "w") as zf:
zf.writestr("inside.jpg", _jpeg("red"))
sha = hashlib.sha256(arc.read_bytes()).hexdigest()
db_sync.add(PostAttachment(
post_id=post.id, artist_id=artist.id, sha256=sha, path=str(arc),
original_filename=arc.name, ext="", size_bytes=arc.stat().st_size,
))
db_sync.commit()
summary = cleanup_service.reextract_archive_attachments(
db_sync, images_root=images_root,
)
assert summary["archives"] == 1
assert summary["members_imported"] == 1
assert summary["posts_touched"] == 1
images = db_sync.execute(select(ImageRecord)).scalars().all()
assert len(images) == 1
prov = db_sync.execute(
select(ImageProvenance).where(ImageProvenance.post_id == post.id)
).scalars().all()
assert len(prov) == 1
assert prov[0].image_record_id == images[0].id
# Idempotent — a second run imports nothing new (member dedups by sha256).
again = cleanup_service.reextract_archive_attachments(
db_sync, images_root=images_root,
)
assert again["members_imported"] == 0
assert db_sync.execute(select(ImageRecord)).scalars().all() == images