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FabledCurator/tests/test_artist_service.py
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bvandeusen 2f66de2928
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feat(model): nullable Post.source_id + denormalized Post.artist_id; retire sidecar synthetics
Operator-asked 2026-06-01 after the Dymkens orphan investigation
(Scribe plan #540). The pre-2030 sidecar-synthetic Source pattern
(`sidecar:<platform>:<slug>` enabled=false rows) existed solely to
satisfy `Post.source_id NOT NULL`, and leaked into the Subscriptions
UI as phantom subscriptions. Now the data model says what's true:
filesystem-imported content with no live subscription has NULL
source_id, full stop.

## Schema (alembic 0030)

- `post.artist_id` — NEW NOT NULL FK to artist (CASCADE). Backfilled
  from source.artist_id in the migration. Indexed for the artist-filter
  queries.
- `post.source_id` — NOT NULL → nullable; FK ondelete CASCADE → SET
  NULL. Deleting a Source detaches its Posts instead of destroying
  archived content (subscription ends, archive stays).
- `image_provenance.source_id` — same nullable + SET NULL.
- Partial unique index `uq_post_artist_external_id_null_source` on
  (artist_id, external_post_id) WHERE source_id IS NULL — guards
  filesystem-import dedup since the existing source-bound unique
  ignores NULLs (Postgres treats NULL != NULL).
- Sidecar synthetic Sources deleted: NULL out FKs in post,
  image_provenance first, then DELETE FROM source WHERE url LIKE
  'sidecar:%'. The Dymkens cleanup.

## Model + service changes

- `Post.source_id` → `Mapped[int | None]`; new `Post.artist_id`
  denormalized.
- `ImageProvenance.source_id` → `Mapped[int | None]`.
- Importer: `_source_for_sidecar` (synthetic-creating) →
  `_lookup_source_for_sidecar` (returns None when no subscription).
  `_find_or_create_post` takes required `artist_id`; matches on
  (source_id, external_post_id) for source-bound posts or
  (artist_id, external_post_id) for NULL-source posts.
- Service queries switched off the Source detour to use Post.artist_id
  directly: post_feed_service.scroll/around/get_post (LEFT JOIN to
  Source so NULL-source posts surface); artist_service date_row/
  activity/post_count; provenance_service.for_image/for_post (LEFT
  JOIN); gallery_service._provenance_exists_where_artist via
  Post.artist_id instead of ImageProvenance.source_id → Source.
- `_to_dict` and provenance dict-builders emit `"source": null` for
  NULL-source rows.

## Frontend

- `ProvenancePanel.vue` + `PostCard.vue`: render `e.source?.platform
  ?? 'filesystem import'` so NULL-source posts get a clear
  "filesystem import" affordance instead of a NaN crash.

## Tests

- `test_importer_upsert_helpers`: removed the four synthetic-anchor
  tests; added `_find_or_create_post_idempotent_with_null_source`
  (dedup via the partial unique index) and
  `_lookup_source_for_sidecar_returns_*` (existing-subscription +
  none cases). The existing `_find_or_create_post_idempotent` now
  also passes `artist_id` and asserts it.
- 8 other test files updated: every direct `Post(...)` construction
  gains `artist_id=<artist>.id`. The `_seed_post` helper in
  `test_post_feed_service` looks up artist_id from the source row so
  callsites stay one-arg.

## Verification on deploy

After alembic 0030 runs:
- `SELECT COUNT(*) FROM source WHERE url LIKE 'sidecar:%'` → 0.
- `SELECT COUNT(*) FROM post WHERE source_id IS NULL` → count of
  filesystem-imported posts (Dymkens + any other historical).
- Every `post.artist_id` non-null; consistent with source.artist_id
  for source-bound rows.
- Subscriptions tab: no Dymkens phantom row.
- Artist detail → Posts/Gallery: Dymkens's content still reachable
  via Post.artist_id.
- Provenance panel renders "filesystem import" chip for NULL-source
  posts; PostCard same.

## Out of scope

- UI to manage/delete orphan NULL-source Posts. Data model is right;
  UI follows if operator wants it.
2026-06-01 14:17:52 -04:00

110 lines
3.3 KiB
Python

from datetime import UTC, datetime
import pytest
from backend.app.models import (
Artist,
ImageProvenance,
ImageRecord,
Post,
Source,
Tag,
TagKind,
)
from backend.app.models.tag import image_tag
from backend.app.services.artist_service import ArtistService
pytestmark = pytest.mark.integration
async def _fixture(db):
artist = Artist(name="Nadia", slug="nadia")
db.add(artist)
await db.flush()
src = Source(artist_id=artist.id, platform="web", url="http://x")
db.add(src)
await db.flush()
post = Post(
source_id=src.id, artist_id=artist.id, external_post_id="p1",
post_date=datetime(2026, 3, 1, tzinfo=UTC),
)
db.add(post)
await db.flush()
img = ImageRecord(
path="/images/a/1.jpg", sha256="a" + "0" * 63,
size_bytes=1, mime="image/jpeg", width=4, height=8,
origin="downloaded", integrity_status="unknown",
# FC-2d-vii-c: provenance images also carry the canonical
# artist_id (set by importer/migration); ArtistService reads it.
artist_id=artist.id,
)
db.add(img)
await db.flush()
db.add(ImageProvenance(
image_record_id=img.id, post_id=post.id, source_id=src.id))
tag = Tag(name="forest", kind=TagKind.general)
db.add(tag)
await db.flush()
await db.execute(image_tag.insert().values(
image_record_id=img.id, tag_id=tag.id, source="manual"))
await db.flush()
return artist, src, img
@pytest.mark.asyncio
async def test_overview_aggregates(db):
artist, src, img = await _fixture(db)
svc = ArtistService(db)
ov = await svc.overview("nadia")
assert ov["name"] == "Nadia"
assert ov["image_count"] == 1
assert ov["date_range"]["min"].startswith("2026-03-01")
assert ov["date_range"]["max"].startswith("2026-03-01")
assert any(t["name"] == "forest" for t in ov["cooccurring_tags"])
assert ov["sources"][0]["image_count"] == 1
assert ov["activity"][0]["count"] == 1
@pytest.mark.asyncio
async def test_overview_unknown_slug_returns_none(db):
svc = ArtistService(db)
assert await svc.overview("ghost") is None
@pytest.mark.asyncio
async def test_paged_images(db):
artist, src, img = await _fixture(db)
svc = ArtistService(db)
page = await svc.images("nadia", cursor=None, limit=10)
assert page is not None
assert len(page.images) == 1
assert page.images[0]["thumbnail_url"].startswith("/images/thumbs/")
@pytest.mark.asyncio
async def test_paged_images_unknown_slug_none(db):
svc = ArtistService(db)
assert await svc.images("ghost", cursor=None, limit=10) is None
@pytest.mark.asyncio
async def test_overview_and_images_include_artist_id_only(db):
# FC-2d-vii-c: a folder-style image has artist_id but no provenance.
a = Artist(name="Solo", slug="solo")
db.add(a)
await db.flush()
rec = ImageRecord(
path="/images/s/1.jpg", sha256="s" + "0" * 63,
size_bytes=1, mime="image/jpeg", width=1, height=1,
origin="imported_filesystem", integrity_status="unknown",
artist_id=a.id,
)
db.add(rec)
await db.flush()
svc = ArtistService(db)
ov = await svc.overview("solo")
assert ov["image_count"] == 1
page = await svc.images("solo", cursor=None, limit=10)
assert [i["id"] for i in page.images] == [rec.id]