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Senko-san 48e3418c7f
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feat(sources): local_folder source backend + import pipeline
First ingest path beyond manual upload (plan §1C). Source abstraction +
the first concrete backend, so a homelab can index an existing library.

- domain: SourceBackend/IndexableSource ports + SourceInfo/SourceFile shapes
- infrastructure/sources: LocalFolderSource (walks a mounted dir, idempotent
  source_id = relative path) + registry built from settings
- application: LibraryImportService — batch sibling of UploadService; dedup on
  (source, source_id), copy into storage, minimal track (metadata_status=pending,
  enrichment fills the rest in 1D), per-file failures isolated
- workers: scan_local_folder arq task (registered) + enqueue helper (503 if
  Redis down)
- api: GET /sources, POST /sources/{source}/scan (admin, enqueues), /health
- config: LOCAL_MEDIA_IMPORT_PATH; README + .env.example documented
- tests: scanner, registry, import service (fakes) + DB-gated sources API path

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-08 20:02:09 +03:00

61 lines
2.0 KiB
Python

"""``local`` source — indexes audio files from a mounted folder.
Walks a configured root directory and yields each audio file as a
:class:`SourceFile`. It does **not** parse tags or resolve artist/album — that's
enrichment's job (plan §6.2); this stays a thin discovery layer. ``source_id``
is the path relative to the root, so re-scans are idempotent.
"""
import os
from collections.abc import Iterator
from pathlib import Path
from app.domain.sources import SourceFile, SourceInfo
from app.infrastructure.db.models.enums import TrackSource
# Extensions we treat as audio. Mirrors the formats StreamingService serves.
_AUDIO_EXTENSIONS = frozenset(
{"mp3", "flac", "m4a", "aac", "ogg", "opus", "wav", "wma", "aiff", "aif", "alac"}
)
class LocalFolderSource:
"""Implements :class:`app.domain.ports.IndexableSource`."""
name = TrackSource.LOCAL.value
def __init__(self, root: Path) -> None:
self._root = root
def info(self) -> SourceInfo:
return SourceInfo(
name=self.name,
label="Local folder",
kind="indexable",
available=self.is_available(),
)
def is_available(self) -> bool:
return self._root.is_dir()
def scan(self) -> Iterator[SourceFile]:
if not self.is_available():
return
for dirpath, _dirnames, filenames in os.walk(self._root):
for filename in sorted(filenames):
ext = Path(filename).suffix.lower().lstrip(".")
if ext not in _AUDIO_EXTENSIONS:
continue
path = Path(dirpath) / filename
try:
size = path.stat().st_size
except OSError:
continue # vanished/unreadable between walk and stat → skip
yield SourceFile(
source_id=path.relative_to(self._root).as_posix(),
path=path,
suggested_title=path.stem or "Unknown",
file_format=ext,
file_size=size,
)