104 lines
3.5 KiB
Python
104 lines
3.5 KiB
Python
"""
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Author: Uyanide pywang0608@foxmail.com
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Date: 2026-03-25 05:23:38
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Description: LRCLIB fetcher — queries lrclib.net for synced/plain lyrics
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"""
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"""
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Requires complete track metadata (artist, title, album, duration).
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"""
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from typing import Optional
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import httpx
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from loguru import logger
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from urllib.parse import urlencode
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from .base import BaseFetcher
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from ..models import TrackMeta, LyricResult, CacheStatus
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from ..config import (
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HTTP_TIMEOUT,
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TTL_UNSYNCED,
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TTL_NOT_FOUND,
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TTL_NETWORK_ERROR,
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LRCLIB_API_URL,
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UA_LRCFETCH,
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)
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class LrclibFetcher(BaseFetcher):
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@property
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def source_name(self) -> str:
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return "lrclib"
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def fetch(self, track: TrackMeta) -> Optional[LyricResult]:
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"""Fetch lyrics from LRCLIB. Requires complete metadata."""
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if not track.is_complete:
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logger.debug("LRCLIB: skipped — incomplete metadata")
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return None
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params = {
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"track_name": track.title,
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"artist_name": track.artist,
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"album_name": track.album,
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"duration": track.length / 1000.0 if track.length else 0,
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}
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url = f"{LRCLIB_API_URL}?{urlencode(params)}"
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logger.info(f"LRCLIB: fetching lyrics for {track.display_name()}")
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try:
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with httpx.Client(timeout=HTTP_TIMEOUT) as client:
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resp = client.get(url, headers={"User-Agent": UA_LRCFETCH})
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if resp.status_code == 404:
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logger.debug(f"LRCLIB: not found for {track.display_name()}")
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return LyricResult(status=CacheStatus.NOT_FOUND, ttl=TTL_NOT_FOUND)
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if resp.status_code != 200:
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logger.error(f"LRCLIB: API returned {resp.status_code}")
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return LyricResult(
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status=CacheStatus.NETWORK_ERROR, ttl=TTL_NETWORK_ERROR
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)
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data = resp.json()
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# Validate response
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if not isinstance(data, dict):
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logger.error(f"LRCLIB: unexpected response type: {type(data).__name__}")
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return LyricResult(
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status=CacheStatus.NETWORK_ERROR, ttl=TTL_NETWORK_ERROR
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)
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synced = data.get("syncedLyrics")
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unsynced = data.get("plainLyrics")
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if isinstance(synced, str) and synced.strip():
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logger.info(
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f"LRCLIB: got synced lyrics ({len(synced.splitlines())} lines)"
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)
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return LyricResult(
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status=CacheStatus.SUCCESS_SYNCED,
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lyrics=synced.strip(),
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source=self.source_name,
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)
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elif isinstance(unsynced, str) and unsynced.strip():
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logger.info(
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f"LRCLIB: got unsynced lyrics ({len(unsynced.splitlines())} lines)"
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)
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return LyricResult(
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status=CacheStatus.SUCCESS_UNSYNCED,
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lyrics=unsynced.strip(),
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source=self.source_name,
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ttl=TTL_UNSYNCED,
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)
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else:
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logger.debug(f"LRCLIB: empty response for {track.display_name()}")
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return LyricResult(status=CacheStatus.NOT_FOUND, ttl=TTL_NOT_FOUND)
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except httpx.HTTPError as e:
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logger.error(f"LRCLIB: HTTP error: {e}")
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return LyricResult(status=CacheStatus.NETWORK_ERROR, ttl=TTL_NETWORK_ERROR)
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except Exception as e:
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logger.error(f"LRCLIB: unexpected error: {e}")
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return None
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