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mcma-backend/app/domain/sources.py
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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

40 lines
1.3 KiB
Python

"""Source-backend value objects — framework-free.
A *source* is a place tracks come from (a mounted folder, YouTube, an upload).
Backends are driven adapters (``app.infrastructure.sources``); these are the
shapes they speak in, and the ports they satisfy live in ``app.domain.ports``.
The first backend, ``local``, is *indexable*: it enumerates files already on
disk. Concrete metadata (artist/album/tags) is intentionally **not** resolved
here — a source yields a file plus a minimal title; enrichment (plan §6.2) fills
the rest later, so this stays a thin discovery layer (CLAUDE.md: no duplicated
business logic)."""
from dataclasses import dataclass
from pathlib import Path
@dataclass(frozen=True, slots=True)
class SourceInfo:
"""Describes a registered source for enumeration / health (UI, admin)."""
name: str
label: str
kind: str # "indexable" (more kinds — search/download — arrive with youtube)
available: bool
@dataclass(frozen=True, slots=True)
class SourceFile:
"""A single importable file discovered by an indexable source.
``source_id`` is stable per source (the local backend uses the path relative
to its root) so re-scans are idempotent — already-imported files are skipped.
"""
source_id: str
path: Path
suggested_title: str
file_format: str
file_size: int