Jonathan
56 lines
1.9 KiB
Python
56 lines
1.9 KiB
Python
from typing import Callable, Protocol
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from lyra_worker.types import Candidate, DownloadResult, MBTarget, Quality
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_YT_QUALITY = Quality(fmt="OPUS", lossless=False, bitrate_kbps=160)
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class YtClient(Protocol):
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def search_album(self, artist: str, album: str) -> list[dict]:
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"""Return album matches: dicts with keys source_ref, title, artist, track_count."""
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...
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def download(self, source_ref: str, dest: str, on_progress: Callable[[float], None]) -> dict:
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"""Download into dest; return {track_count, path}. Raise on failure."""
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...
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class YouTubeAdapter:
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name = "youtube"
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tier = 2
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def __init__(self, client: YtClient):
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self._client = client
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def health(self) -> bool:
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return True
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def search(self, target: MBTarget) -> list[Candidate]:
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candidates: list[Candidate] = []
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for r in self._client.search_album(target.artist, target.album):
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candidates.append(
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Candidate(
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source="youtube",
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source_ref=r["source_ref"],
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matched_artist=r.get("artist", ""),
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matched_album=r.get("title", ""),
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quality=_YT_QUALITY,
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track_count=r.get("track_count", 1) or 1,
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source_tier=self.tier,
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)
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)
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return candidates
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def download(
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self, candidate: Candidate, dest: str, on_progress: Callable[[float], None]
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) -> DownloadResult:
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try:
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info = self._client.download(candidate.source_ref, dest, on_progress)
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except Exception as e: # network/extraction failures -> fall-through in the pipeline
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return DownloadResult(ok=False, error=str(e))
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return DownloadResult(
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ok=True,
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path=info.get("path", dest),
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track_count=info.get("track_count", candidate.track_count),
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)
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