feat: auth: add auth module

lrx_cli/enrichers/__init__.py

@@ -10,24 +10,33 @@ from .base import BaseEnricher
 from .audio_tag import AudioTagEnricher
 from .file_name import FileNameEnricher
 from .musixmatch import MusixmatchSpotifyEnricher
+from ..authenticators import BaseAuthenticator, MusixmatchAuthenticator
 from ..models import TrackMeta
 
 # Enrichers run in order; earlier ones have higher priority.
 # There are only a few of them, so we can just call them sequentially without worrying about async concurrency or batching.
-_ENRICHERS: list[BaseEnricher] = [
-    AudioTagEnricher(),
-    FileNameEnricher(),
-    MusixmatchSpotifyEnricher(),
-]
 
 
-async def enrich_track(track: TrackMeta) -> TrackMeta:
+def create_enrichers(
+    authenticators: dict[str, BaseAuthenticator],
+) -> list[BaseEnricher]:
+    """Instantiate all enrichers."""
+    mxm_auth = authenticators["musixmatch"]
+    assert isinstance(mxm_auth, MusixmatchAuthenticator)
+    return [
+        AudioTagEnricher(),
+        FileNameEnricher(),
+        MusixmatchSpotifyEnricher(mxm_auth),
+    ]
+
+
+async def enrich_track(track: TrackMeta, enrichers: list[BaseEnricher]) -> TrackMeta:
     """Run all enrichers and return a track with missing fields filled in.
 
     Each enricher sees the cumulative state (earlier enrichers' results
     are already applied).  A field is only set if it is currently None.
     """
-    for enricher in _ENRICHERS:
+    for enricher in enrichers:
         try:
             # Skip if all provided fields are already filled
             if all(