fa73c41ef6
Follows the exact same standard as Tidal, Qobuz, HiFi, and Deezer. registry.py — import + register AmazonDownloadClient as 'amazon'. amazon_download_client.py — read amazon_download.quality / allow_fallback from config on init; pass quality as preferred_codec to AmazonClient; _download_sync codec waterfall respects allow_fallback flag. download_orchestrator.py — reload_settings() updates preferred_codec + allow_fallback on the live client after a settings save. 'amazon' added to _streaming_sources so search_and_download_best routes it correctly. api_call_tracker.py — 'amazon' registered in RATE_LIMITS (120/min), SERVICE_LABELS, and SERVICE_ORDER so API call monitoring shows Amazon. web_server.py — 'amazon_download' added to the settings service loop. 'amazon' added to serverless_sources (no slskd probe needed). Streaming file-finder extended to handle amazon username + ||asin||title encoding (extension-less fuzzy match, same as Tidal/Qobuz/HiFi). New endpoint: GET /api/amazon/test-connection → checks T2Tunes proxy status. webui/index.html — amazon-download-settings-container: quality dropdown (flac/opus/eac3), allow-fallback checkbox, test-connection button. webui/static/settings.js — 'Amazon Music' added to HYBRID_SOURCES, _hybridSourceEnabled, allSources mode list, loadSettings(), saveSettings() payload, updateDownloadSourceUI() show/hide + auto-test. New testAmazonConnection() function.
436 lines
16 KiB
Python
436 lines
16 KiB
Python
"""Amazon Music download source plugin backed by a T2Tunes proxy.
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NOT yet wired into the app registry — validated in isolation only.
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See tests/tools/test_amazon_download_client.py.
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Filename encoding (the DownloadSourcePlugin dispatch contract):
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"{asin}||{display_name}"
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e.g. "B09XYZ1234||Kendrick Lamar - Not Like Us"
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Codec preference order: FLAC → Opus → EAC3.
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Download flow (from Tubifarry reference implementation):
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1. GET stream_url → encrypted bytes on disk
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2. FFmpeg -decryption_key <hex> to decrypt in place
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3. Embed metadata tags (handled by the app's standard post-processing)
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"""
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from __future__ import annotations
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import os
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import shutil
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import subprocess
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import threading
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import time
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import uuid
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from pathlib import Path
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from typing import Any, Dict, List, Optional, Tuple
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import requests as http_requests
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from config.settings import config_manager
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from core.amazon_client import AmazonClient, AmazonClientError
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from core.download_plugins.base import DownloadSourcePlugin
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from core.download_plugins.types import AlbumResult, DownloadStatus, TrackResult
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from utils.logging_config import get_logger
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logger = get_logger("amazon_download_client")
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# Quality / codec helpers
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CODEC_PREFERENCE = ["flac", "opus", "eac3"]
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_CODEC_EXTENSIONS: Dict[str, str] = {
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"flac": "flac",
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"ogg_vorbis": "ogg",
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"opus": "opus",
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"eac3": "eac3",
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"mp4": "m4a",
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"aac": "m4a",
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"mp3": "mp3",
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}
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MIN_AUDIO_BYTES = 512 * 1024 # 512 KB — anything smaller is a broken stream
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def _codec_key(codec: str) -> str:
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return codec.lower().replace("-", "_").replace(" ", "_")
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def _file_extension(codec: str) -> str:
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return _CODEC_EXTENSIONS.get(_codec_key(codec), "bin")
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def _quality_label(codec: str, sample_rate: Optional[int] = None) -> str:
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ck = _codec_key(codec)
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if ck == "flac":
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if sample_rate and sample_rate > 48000:
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return "Hi-Res"
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return "Lossless"
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return "Lossy"
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class AmazonDownloadClient(DownloadSourcePlugin):
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"""DownloadSourcePlugin — Amazon Music via T2Tunes proxy."""
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def __init__(self, download_path: Optional[str] = None) -> None:
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if download_path is None:
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download_path = config_manager.get("soulseek.download_path", "./downloads")
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self.download_path = Path(download_path)
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self.download_path.mkdir(parents=True, exist_ok=True)
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self._quality = config_manager.get("amazon_download.quality", "flac")
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self._allow_fallback = config_manager.get("amazon_download.allow_fallback", True)
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self._client = AmazonClient(preferred_codec=self._quality)
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self.session = http_requests.Session()
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self.session.headers.update({
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"User-Agent": "SoulSync/1.0",
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"Accept": "*/*",
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})
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self._engine: Any = None
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self.shutdown_check: Any = None
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# ------------------------------------------------------------------
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# DownloadSourcePlugin — lifecycle
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# ------------------------------------------------------------------
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def is_configured(self) -> bool:
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# T2Tunes has a public default instance; no credentials required.
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# Return True unconditionally so the source shows as available.
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return True
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async def check_connection(self) -> bool:
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try:
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return self._client.is_authenticated()
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except Exception:
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return False
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# ------------------------------------------------------------------
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# DownloadSourcePlugin — search
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# ------------------------------------------------------------------
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async def search(
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self,
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query: str,
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timeout: Optional[int] = None,
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progress_callback: Any = None,
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) -> Tuple[List[TrackResult], List[AlbumResult]]:
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try:
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items = self._client.search_raw(query, types="track,album")
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except AmazonClientError as exc:
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logger.warning(f"Amazon search failed for {query!r}: {exc}")
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return [], []
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track_results: List[TrackResult] = []
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album_map: Dict[str, AlbumResult] = {}
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album_order: List[str] = []
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preferred = self._client.preferred_codec
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for item in items:
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quality = _quality_label(preferred)
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if item.is_track:
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track_results.append(TrackResult(
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username="amazon",
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filename=f"{item.asin}||{item.artist_name} - {item.title}",
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size=0,
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bitrate=None,
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duration=item.duration_seconds * 1000 if item.duration_seconds else None,
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quality=quality,
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free_upload_slots=999,
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upload_speed=999_999,
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queue_length=0,
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artist=item.artist_name,
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title=item.title,
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album=item.album_name,
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_source_metadata={
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"asin": item.asin,
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"album_asin": item.album_asin,
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"isrc": item.isrc,
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},
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))
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elif item.is_album:
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album_asin = item.album_asin or item.asin
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if album_asin not in album_map:
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placeholder = TrackResult(
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username="amazon",
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filename=f"{item.asin}||{item.artist_name} - {item.title}",
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size=0,
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bitrate=None,
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duration=None,
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quality=quality,
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free_upload_slots=999,
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upload_speed=999_999,
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queue_length=0,
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artist=item.artist_name,
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title=item.title,
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album=item.album_name,
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)
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album_map[album_asin] = AlbumResult(
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username="amazon",
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album_path=album_asin,
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album_title=item.album_name or item.title,
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artist=item.artist_name,
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track_count=0,
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total_size=0,
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tracks=[placeholder],
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dominant_quality=quality,
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)
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album_order.append(album_asin)
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return track_results, [album_map[k] for k in album_order]
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# ------------------------------------------------------------------
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# DownloadSourcePlugin — download dispatch
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# ------------------------------------------------------------------
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async def download(
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self,
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username: str,
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filename: str,
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file_size: int = 0,
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) -> Optional[str]:
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if "||" not in filename:
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logger.error(f"Invalid Amazon filename format (no '||'): {filename!r}")
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return None
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if self._engine is None:
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raise RuntimeError(
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"AmazonDownloadClient._engine is not set — "
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"client not connected to download infrastructure"
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)
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asin, display_name = filename.split("||", 1)
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asin = asin.strip()
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display_name = display_name.strip()
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return self._engine.worker.dispatch(
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source_name="amazon",
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target_id=asin,
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display_name=display_name,
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original_filename=filename,
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impl_callable=self._download_sync,
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)
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def _download_sync(
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self,
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download_id: str,
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target_id: str,
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display_name: str,
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) -> Optional[str]:
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asin = str(target_id)
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codecs = CODEC_PREFERENCE if self._allow_fallback else [self._quality]
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for codec in codecs:
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try:
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streams = self._client.media_from_asin(asin, codec=codec)
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except AmazonClientError as exc:
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logger.warning(f"media_from_asin({asin!r}, {codec}) failed: {exc}")
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continue
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stream = next(
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(s for s in streams if s.streamable and s.stream_url),
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None,
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)
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if not stream:
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logger.debug(f"No streamable result for {asin} at codec={codec}")
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continue
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ext = _file_extension(stream.codec or codec)
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safe = "".join(
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ch if ch.isalnum() or ch in " -_." else "_"
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for ch in display_name
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)[:80]
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# T2Tunes always serves audio in an encrypted MP4 container.
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# The codec extension (.flac, .opus, .eac3) is only for the
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# final decrypted output.
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enc_ext = "mp4" if stream.decryption_key else ext
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enc_path = self._unique_path(self.download_path / f"{safe}.enc.{enc_ext}")
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out_path = self._unique_path(self.download_path / f"{safe}.{ext}")
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if self._engine is not None:
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self._engine.update_record(
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"amazon", download_id, {"state": "downloading", "progress": 0.0}
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)
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try:
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downloaded = self._stream_to_file(stream.stream_url, enc_path, download_id)
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except Exception as exc:
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logger.warning(f"Stream download failed for {asin} ({codec}): {exc}")
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enc_path.unlink(missing_ok=True)
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continue
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if downloaded < MIN_AUDIO_BYTES:
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logger.warning(
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f"File too small ({downloaded} B) for {asin} at {codec} — trying next"
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)
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enc_path.unlink(missing_ok=True)
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continue
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if stream.decryption_key:
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if self._engine is not None:
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self._engine.update_record(
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"amazon", download_id, {"state": "decrypting", "progress": 1.0}
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)
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try:
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self._decrypt_with_ffmpeg(enc_path, out_path, stream.decryption_key)
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enc_path.unlink(missing_ok=True)
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except Exception as exc:
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logger.error(f"Decryption failed for {asin} ({codec}): {exc}")
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enc_path.unlink(missing_ok=True)
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out_path.unlink(missing_ok=True)
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continue
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else:
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enc_path.rename(out_path)
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logger.info(
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f"Amazon download complete ({codec}): {out_path} "
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f"({out_path.stat().st_size / (1024 * 1024):.1f} MB)"
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)
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return str(out_path)
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logger.error(f"All codec tiers exhausted for '{display_name}' ({asin})")
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return None
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def _decrypt_with_ffmpeg(
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self, enc_path: Path, out_path: Path, hex_key: str
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) -> None:
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"""Decrypt a T2Tunes encrypted audio file using FFmpeg -decryption_key.
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T2Tunes uses CENC (Common Encryption) for DRM-protected tracks.
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FFmpeg supports decryption via the -decryption_key flag when the
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key is provided in hex.
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"""
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ffmpeg = shutil.which("ffmpeg")
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if not ffmpeg:
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tools_dir = Path(__file__).parent.parent / "tools"
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candidate = tools_dir / ("ffmpeg.exe" if os.name == "nt" else "ffmpeg")
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if candidate.exists():
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ffmpeg = str(candidate)
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else:
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raise RuntimeError(
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"ffmpeg is required for Amazon Music decryption. "
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"Install ffmpeg and ensure it is on your PATH."
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)
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cmd = [
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ffmpeg,
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"-y",
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"-hide_banner",
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"-loglevel", "error",
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"-decryption_key", hex_key,
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"-i", str(enc_path),
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"-map", "0:a:0", # extract first audio stream (FLAC/Opus/EAC3 inside MP4)
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"-c", "copy",
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str(out_path),
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]
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logger.debug(f"Decrypting {enc_path.name} → {out_path.name}")
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result = subprocess.run(cmd, capture_output=True)
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if result.returncode != 0:
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stderr = result.stderr.decode("utf-8", errors="replace").strip()
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raise RuntimeError(f"FFmpeg decryption failed (exit {result.returncode}): {stderr}")
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def _stream_to_file(self, url: str, out_path: Path, download_id: str) -> int:
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resp = self.session.get(url, stream=True, timeout=60)
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resp.raise_for_status()
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total = int(resp.headers.get("content-length", 0))
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downloaded = 0
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last_report = time.monotonic()
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shutdown_triggered = False
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with out_path.open("wb") as fh:
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for chunk in resp.iter_content(chunk_size=64 * 1024):
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if not chunk:
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continue
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if self.shutdown_check and self.shutdown_check():
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shutdown_triggered = True
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break
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fh.write(chunk)
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downloaded += len(chunk)
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now = time.monotonic()
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if self._engine and now - last_report >= 0.5:
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self._engine.update_record(
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"amazon",
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download_id,
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{
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"transferred": downloaded,
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"size": total,
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"progress": downloaded / total if total else 0.0,
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},
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)
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last_report = now
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if shutdown_triggered:
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out_path.unlink(missing_ok=True)
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raise RuntimeError("Shutdown requested mid-download")
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return downloaded
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# ------------------------------------------------------------------
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# DownloadSourcePlugin — status interface
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# ------------------------------------------------------------------
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async def get_all_downloads(self) -> List[DownloadStatus]:
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if self._engine is None:
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return []
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try:
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records = self._engine.get_all_records("amazon")
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return [self._record_to_status(dl_id, rec) for dl_id, rec in records.items()]
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except Exception:
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return []
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async def get_download_status(self, download_id: str) -> Optional[DownloadStatus]:
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if self._engine is None:
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return None
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try:
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rec = self._engine.get_record("amazon", download_id)
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return self._record_to_status(download_id, rec) if rec is not None else None
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except Exception:
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return None
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async def cancel_download(
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self,
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download_id: str,
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username: Optional[str] = None,
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remove: bool = False,
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) -> bool:
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if self._engine is None:
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return False
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try:
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return self._engine.cancel_record("amazon", download_id, remove=remove)
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except Exception:
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return False
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async def clear_all_completed_downloads(self) -> bool:
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if self._engine is None:
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return False
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try:
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self._engine.clear_completed("amazon")
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return True
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except Exception:
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return False
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# ------------------------------------------------------------------
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# Private helpers
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# ------------------------------------------------------------------
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@staticmethod
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def _unique_path(path: Path) -> Path:
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if not path.exists():
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return path
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stem, suffix = path.stem, path.suffix
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for i in range(1, 100):
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candidate = path.with_name(f"{stem} ({i}){suffix}")
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if not candidate.exists():
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return candidate
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return path.with_name(f"{stem}_{uuid.uuid4().hex[:8]}{suffix}")
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@staticmethod
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def _record_to_status(download_id: str, rec: Dict[str, Any]) -> DownloadStatus:
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return DownloadStatus(
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id=download_id,
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filename=str(rec.get("original_filename", "")),
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username="amazon",
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state=str(rec.get("state", "queued")),
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progress=float(rec.get("progress", 0.0)),
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size=int(rec.get("size", 0)),
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transferred=int(rec.get("transferred", 0)),
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speed=int(rec.get("speed", 0)),
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time_remaining=rec.get("time_remaining"),
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file_path=rec.get("file_path"),
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)
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