Harvey
642 lines
23 KiB
Python
642 lines
23 KiB
Python
import asyncio
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import logging
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import os
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import shutil
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from collections.abc import AsyncGenerator
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from pathlib import Path
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from typing import Any
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import aiofiles
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from api.v1.schemas.local_files import (
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FormatInfo,
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LocalAlbumMatch,
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LocalAlbumSummary,
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LocalPaginatedResponse,
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LocalStorageStats,
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LocalTrackInfo,
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)
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from api.v1.schemas.settings import LocalFilesVerifyResponse
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from core.exceptions import ExternalServiceError, ResourceNotFoundError
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from infrastructure.cache.cache_keys import LOCAL_FILES_PREFIX
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from infrastructure.cache.memory_cache import CacheInterface
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from infrastructure.cover_urls import prefer_release_group_cover_url
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from infrastructure.constants import STREAM_CHUNK_SIZE
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from infrastructure.resilience.retry import CircuitOpenError
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from infrastructure.serialization import to_jsonable
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from repositories.protocols import LidarrRepositoryProtocol
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from services.preferences_service import PreferencesService
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logger = logging.getLogger(__name__)
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AUDIO_EXTENSIONS: set[str] = {
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".flac", ".mp3", ".ogg", ".m4a", ".aac", ".wav", ".wma", ".opus",
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}
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CONTENT_TYPE_MAP: dict[str, str] = {
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".flac": "audio/flac",
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".mp3": "audio/mpeg",
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".ogg": "audio/ogg",
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".m4a": "audio/mp4",
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".aac": "audio/aac",
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".wav": "audio/wav",
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".wma": "audio/x-ms-wma",
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".opus": "audio/opus",
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}
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class LocalFilesService:
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_DEFAULT_STORAGE_STATS_TTL = 300
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_ALBUM_LIST_TTL = 120
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_DEFAULT_RECENTLY_ADDED_TTL = 120
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def __init__(
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self,
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lidarr_repo: LidarrRepositoryProtocol,
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preferences_service: PreferencesService,
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cache: CacheInterface,
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):
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self._lidarr = lidarr_repo
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self._preferences = preferences_service
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self._cache = cache
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def _get_config(self) -> tuple[str, str]:
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settings = self._preferences.get_local_files_connection()
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return settings.music_path, settings.lidarr_root_path
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def _get_recently_added_ttl(self) -> int:
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try:
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return self._preferences.get_advanced_settings().cache_ttl_local_files_recently_added
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except Exception: # noqa: BLE001
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return self._DEFAULT_RECENTLY_ADDED_TTL
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def _get_storage_stats_ttl(self) -> int:
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try:
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return self._preferences.get_advanced_settings().cache_ttl_local_files_storage_stats
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except Exception: # noqa: BLE001
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return self._DEFAULT_STORAGE_STATS_TTL
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def _remap_path(self, lidarr_path: str) -> Path:
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music_path, lidarr_root = self._get_config()
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lidarr_root = lidarr_root.rstrip("/")
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lidarr_root_parts = Path(lidarr_root).parts
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lidarr_path_obj = Path(lidarr_path)
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lidarr_path_parts = lidarr_path_obj.parts
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if (
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len(lidarr_path_parts) >= len(lidarr_root_parts)
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and lidarr_path_parts[: len(lidarr_root_parts)] == lidarr_root_parts
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):
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relative = Path(*lidarr_path_parts[len(lidarr_root_parts):])
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else:
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relative = Path(lidarr_path.lstrip("/"))
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return Path(music_path) / relative
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async def _fetch_all_albums(self) -> list[dict[str, Any]]:
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cache_key = "local_files_all_albums"
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cached = await self._cache.get(cache_key)
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if cached is not None:
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return cached
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try:
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data = await self._lidarr.get_all_albums()
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except (ExternalServiceError, CircuitOpenError, ConnectionError, OSError):
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# Stale-while-error: serve last-known data if Lidarr is down
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try:
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stale = await self._cache.get(f"{cache_key}:stale")
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except Exception: # noqa: BLE001
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stale = None
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if stale is not None:
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logger.warning("Lidarr unavailable — serving stale local album data")
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return stale
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raise
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result = data or []
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if result:
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await self._cache.set(cache_key, result, ttl_seconds=self._ALBUM_LIST_TTL)
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# Keep a long-lived stale copy for fallback (24h)
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await self._cache.set(f"{cache_key}:stale", result, ttl_seconds=86400)
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return result
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def _resolve_and_validate_path(self, lidarr_path: str) -> Path:
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music_path, _ = self._get_config()
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resolved = self._remap_path(lidarr_path)
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canonical = resolved.resolve()
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music_root = Path(music_path).resolve()
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if not canonical.is_relative_to(music_root):
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raise PermissionError("Path outside music directory")
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if not canonical.exists():
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raise ResourceNotFoundError(f"File not found: {canonical.name}")
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return canonical
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async def get_track_file_path(self, track_file_id: int) -> str:
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try:
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data = await self._lidarr.get_track_file(track_file_id)
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if not data:
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raise ResourceNotFoundError(f"Track file {track_file_id} not found in Lidarr")
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path = data.get("path", "")
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return path
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except ResourceNotFoundError:
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raise
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except Exception as e: # noqa: BLE001
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raise ExternalServiceError(f"Failed to get track file from Lidarr: {e}")
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async def head_track(self, track_file_id: int) -> dict[str, str]:
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lidarr_path = await self.get_track_file_path(track_file_id)
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file_path = self._resolve_and_validate_path(lidarr_path)
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suffix = file_path.suffix.lower()
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if suffix not in AUDIO_EXTENSIONS:
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raise ExternalServiceError(
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f"Unsupported audio format: {suffix or 'unknown'}"
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)
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try:
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stat_result = await asyncio.to_thread(file_path.stat)
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except OSError as exc:
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raise ResourceNotFoundError(
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f"Cannot access file: {file_path.name} ({exc})"
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)
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content_type = CONTENT_TYPE_MAP.get(suffix, "application/octet-stream")
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return {
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"Content-Type": content_type,
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"Content-Length": str(stat_result.st_size),
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"Accept-Ranges": "bytes",
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}
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async def stream_track(
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self,
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track_file_id: int,
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range_header: str | None = None,
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) -> tuple[AsyncGenerator[bytes, None], dict[str, str], int]:
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lidarr_path = await self.get_track_file_path(track_file_id)
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file_path = self._resolve_and_validate_path(lidarr_path)
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suffix = file_path.suffix.lower()
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if suffix not in AUDIO_EXTENSIONS:
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raise ExternalServiceError(
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f"Unsupported audio format: {suffix or 'unknown'}"
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)
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try:
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stat_result = await asyncio.to_thread(file_path.stat)
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except OSError as exc:
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raise ResourceNotFoundError(
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f"Cannot access file: {file_path.name} ({exc})"
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)
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file_size = stat_result.st_size
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content_type = CONTENT_TYPE_MAP.get(suffix, "application/octet-stream")
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if range_header and range_header.startswith("bytes="):
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range_spec = range_header[6:]
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start_str, _, end_str = range_spec.partition("-")
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try:
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if not start_str and end_str:
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suffix_len = int(end_str)
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start = max(0, file_size - suffix_len)
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end = file_size - 1
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elif start_str and not end_str:
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start = int(start_str)
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end = file_size - 1
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elif start_str and end_str:
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start = int(start_str)
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end = int(end_str)
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else:
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raise ValueError("Empty range")
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except ValueError:
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return self._iter_file(file_path, 0, file_size), {
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"Content-Type": content_type,
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"Content-Length": str(file_size),
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"Accept-Ranges": "bytes",
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}, 200
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end = min(end, file_size - 1)
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if start < 0 or start > end or start >= file_size:
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raise ExternalServiceError(
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f"Range not satisfiable: {range_header} (file size: {file_size})"
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)
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length = end - start + 1
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headers = {
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"Content-Type": content_type,
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"Content-Length": str(length),
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"Content-Range": f"bytes {start}-{end}/{file_size}",
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"Accept-Ranges": "bytes",
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}
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return self._iter_file(file_path, start, length), headers, 206
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headers = {
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"Content-Type": content_type,
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"Content-Length": str(file_size),
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"Accept-Ranges": "bytes",
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}
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return self._iter_file(file_path, 0, file_size), headers, 200
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async def _iter_file(
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self, path: Path, offset: int, length: int
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) -> AsyncGenerator[bytes, None]:
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remaining = length
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try:
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async with aiofiles.open(path, "rb") as f:
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await f.seek(offset)
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while remaining > 0:
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chunk_size = min(STREAM_CHUNK_SIZE, remaining)
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data = await f.read(chunk_size)
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if not data:
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break
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remaining -= len(data)
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yield data
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except OSError as exc:
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logger.warning(
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"Local file read error mid-stream",
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extra={"path": str(path), "error": str(exc)},
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)
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async def get_album_track_files(
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self, lidarr_album_id: int
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) -> list[dict[str, Any]]:
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data = await self._lidarr.get_track_files_by_album(lidarr_album_id)
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if not data:
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return []
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track_files = []
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for tf in data:
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path_str: str = tf.get("path", "")
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suffix = Path(path_str).suffix.lower().lstrip(".")
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quality = tf.get("quality", {})
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quality_detail = quality.get("quality", {})
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track_files.append({
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"track_file_id": tf.get("id"),
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"path": path_str,
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"size_bytes": tf.get("size", 0),
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"format": suffix if suffix else "unknown",
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"bitrate": quality_detail.get("bitrate"),
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"date_added": tf.get("dateAdded"),
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})
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return track_files
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async def _build_track_list(
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self, album_id: int
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) -> tuple[list[LocalTrackInfo], int, dict[str, int]]:
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tracks = await self._lidarr.get_album_tracks(album_id)
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track_files = await self.get_album_track_files(album_id)
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file_map: dict[int, dict[str, Any]] = {
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tf["track_file_id"]: tf for tf in track_files if tf.get("track_file_id")
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}
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result: list[LocalTrackInfo] = []
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total_size = 0
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format_counts: dict[str, int] = {}
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for track in tracks:
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tf_id = track.get("track_file_id")
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has_file = track.get("has_file", False)
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if not has_file or not tf_id:
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continue
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tf = file_map.get(tf_id, {})
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fmt = tf.get("format", "unknown")
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size = tf.get("size_bytes", 0)
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total_size += size
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format_counts[fmt] = format_counts.get(fmt, 0) + 1
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raw_track_num = track.get("track_number") or track.get("position") or 0
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raw_disc_num = track.get("disc_number", 1) or 1
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try:
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track_num = int(raw_track_num)
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except (TypeError, ValueError):
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track_num = 0
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try:
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disc_num = int(raw_disc_num)
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except (TypeError, ValueError):
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disc_num = 1
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result.append(LocalTrackInfo(
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track_file_id=tf_id,
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title=track.get("title", "Unknown"),
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track_number=track_num,
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disc_number=disc_num,
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duration_seconds=(track.get("duration_ms", 0) or 0) / 1000.0,
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size_bytes=size,
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format=fmt,
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bitrate=tf.get("bitrate"),
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date_added=tf.get("date_added"),
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))
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return result, total_size, format_counts
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async def match_album_by_mbid(
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self, musicbrainz_id: str
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) -> LocalAlbumMatch:
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album_data = await self._lidarr.get_album_details(musicbrainz_id)
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if not album_data:
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return LocalAlbumMatch(found=False)
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album_id: int = album_data.get("id", 0)
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if not album_id:
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return LocalAlbumMatch(found=False)
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result_tracks, total_size, format_counts = await self._build_track_list(album_id)
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primary_format = max(format_counts, key=lambda k: format_counts[k]) if format_counts else None
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return LocalAlbumMatch(
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found=bool(result_tracks),
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tracks=result_tracks,
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total_size_bytes=total_size,
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primary_format=primary_format,
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)
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def _library_album_to_summary(
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self, item: Any, album_id: int, track_file_count: int
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) -> LocalAlbumSummary:
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artist_data = item.get("artist", {})
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year = None
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if date := item.get("releaseDate"):
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try:
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year = int(date.split("-")[0])
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except ValueError:
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pass
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mbid = item.get("foreignAlbumId", "")
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cover_url = None
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images = item.get("images", [])
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for img in images:
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if img.get("coverType") == "cover":
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cover_url = img.get("remoteUrl") or img.get("url")
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break
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if not cover_url and images:
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cover_url = images[0].get("remoteUrl") or images[0].get("url")
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cover_url = prefer_release_group_cover_url(mbid, cover_url, size=500)
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total_size = item.get("statistics", {}).get("sizeOnDisk", 0)
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return LocalAlbumSummary(
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lidarr_album_id=album_id,
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musicbrainz_id=mbid,
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name=item.get("title", "Unknown"),
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artist_name=artist_data.get("artistName", "Unknown"),
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artist_mbid=artist_data.get("foreignArtistId"),
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year=year,
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track_count=track_file_count,
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total_size_bytes=total_size,
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cover_url=cover_url,
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date_added=item.get("added"),
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)
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async def get_albums(
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self,
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limit: int = 50,
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offset: int = 0,
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sort_by: str = "name",
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sort_order: str = "asc",
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search_query: str | None = None,
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) -> LocalPaginatedResponse:
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all_albums = await self._fetch_all_albums()
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albums_with_files: list[dict[str, Any]] = []
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for item in all_albums:
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stats = item.get("statistics", {})
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track_file_count = stats.get("trackFileCount", 0)
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if track_file_count > 0:
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albums_with_files.append(item)
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if search_query:
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q = search_query.lower()
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albums_with_files = [
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a for a in albums_with_files
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if q in a.get("title", "").lower()
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or q in a.get("artist", {}).get("artistName", "").lower()
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]
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descending = sort_order == "desc"
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if sort_by == "date_added":
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albums_with_files.sort(
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key=lambda a: a.get("added", "") or "",
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reverse=descending,
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)
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elif sort_by == "year":
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albums_with_files.sort(
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key=lambda a: a.get("releaseDate", "") or "",
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reverse=descending,
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)
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else:
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albums_with_files.sort(
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key=lambda a: a.get("title", "").lower(),
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reverse=descending,
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)
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total = len(albums_with_files)
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page_items = albums_with_files[offset : offset + limit]
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summaries = [
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self._library_album_to_summary(
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item,
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item.get("id", 0),
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item.get("statistics", {}).get("trackFileCount", 0),
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)
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for item in page_items
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]
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return LocalPaginatedResponse(
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items=summaries, total=total, offset=offset, limit=limit
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)
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async def get_album_tracks_by_id(
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self, lidarr_album_id: int
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) -> list[LocalTrackInfo]:
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result, _, _ = await self._build_track_list(lidarr_album_id)
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return result
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async def search(self, query: str) -> list[LocalAlbumSummary]:
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result = await self.get_albums(
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limit=50, offset=0, search_query=query
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)
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return result.items
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async def get_recently_added(
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self, limit: int = 20
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) -> list[LocalAlbumSummary]:
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ttl_seconds = self._get_recently_added_ttl()
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cache_key = f"{LOCAL_FILES_PREFIX}recently_added:{limit}"
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cached = await self._cache.get(cache_key)
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if isinstance(cached, list):
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try:
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return [
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LocalAlbumSummary(**item)
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for item in cached
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if isinstance(item, dict)
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]
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except (TypeError, ValueError):
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logger.debug("Ignoring invalid cached recently-added payload")
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recently_imported = await self._lidarr.get_recently_imported(limit=limit)
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if not recently_imported:
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await self._cache.set(
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cache_key, [], ttl_seconds=ttl_seconds
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)
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return []
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all_albums = await self._fetch_all_albums()
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album_lookup: dict[str, dict[str, Any]] = {}
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for album in all_albums:
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mbid = album.get("foreignAlbumId")
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if mbid:
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album_lookup[mbid] = album
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summaries: list[LocalAlbumSummary] = []
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for lib_album in recently_imported:
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mbid = lib_album.musicbrainz_id
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full = album_lookup.get(mbid) if mbid else None
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if full:
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stats = full.get("statistics", {})
|
|
if stats.get("trackFileCount", 0) == 0:
|
|
continue
|
|
summaries.append(
|
|
self._library_album_to_summary(
|
|
full,
|
|
full.get("id", 0),
|
|
stats.get("trackFileCount", 0),
|
|
)
|
|
)
|
|
else:
|
|
summaries.append(
|
|
LocalAlbumSummary(
|
|
lidarr_album_id=0,
|
|
musicbrainz_id=mbid or "",
|
|
name=lib_album.album or "Unknown",
|
|
artist_name=lib_album.artist,
|
|
artist_mbid=lib_album.artist_mbid,
|
|
year=lib_album.year,
|
|
cover_url=lib_album.cover_url,
|
|
date_added=str(lib_album.date_added) if lib_album.date_added else None,
|
|
)
|
|
)
|
|
|
|
await self._cache.set(
|
|
cache_key,
|
|
[to_jsonable(summary) for summary in summaries],
|
|
ttl_seconds=ttl_seconds,
|
|
)
|
|
return summaries
|
|
|
|
async def get_storage_stats(self) -> LocalStorageStats:
|
|
ttl_seconds = self._get_storage_stats_ttl()
|
|
cache_key = "local_files_storage_stats"
|
|
cached = await self._cache.get(cache_key)
|
|
if cached and isinstance(cached, dict):
|
|
try:
|
|
return LocalStorageStats(**cached)
|
|
except (TypeError, ValueError):
|
|
logger.debug("Ignoring invalid cached local storage stats payload")
|
|
|
|
music_path, _ = self._get_config()
|
|
root = Path(music_path)
|
|
if not root.exists():
|
|
return LocalStorageStats()
|
|
stats = await asyncio.to_thread(self._scan_storage_sync, root)
|
|
|
|
await self._cache.set(
|
|
cache_key, to_jsonable(stats), ttl_seconds=ttl_seconds
|
|
)
|
|
return stats
|
|
|
|
def _scan_storage_sync(self, root: Path) -> LocalStorageStats:
|
|
total_tracks = 0
|
|
total_size = 0
|
|
format_breakdown: dict[str, dict[str, int]] = {}
|
|
album_dirs: set[str] = set()
|
|
artist_dirs: set[str] = set()
|
|
|
|
try:
|
|
for dirpath, _dirs, files in os.walk(root):
|
|
rel = Path(dirpath).relative_to(root)
|
|
parts = rel.parts
|
|
if len(parts) >= 1:
|
|
artist_dirs.add(parts[0])
|
|
if len(parts) >= 2:
|
|
album_dirs.add(f"{parts[0]}/{parts[1]}")
|
|
|
|
for fname in files:
|
|
ext = Path(fname).suffix.lower()
|
|
if ext not in AUDIO_EXTENSIONS:
|
|
continue
|
|
total_tracks += 1
|
|
fp = Path(dirpath) / fname
|
|
try:
|
|
sz = fp.stat().st_size
|
|
except OSError:
|
|
sz = 0
|
|
total_size += sz
|
|
|
|
fmt = ext.lstrip(".")
|
|
if fmt not in format_breakdown:
|
|
format_breakdown[fmt] = {"count": 0, "size_bytes": 0}
|
|
format_breakdown[fmt]["count"] += 1
|
|
format_breakdown[fmt]["size_bytes"] += sz
|
|
|
|
except PermissionError:
|
|
logger.warning("Permission denied scanning music directory")
|
|
|
|
disk = shutil.disk_usage(root)
|
|
|
|
typed_breakdown: dict[str, FormatInfo] = {}
|
|
for fmt_name, fmt_data in format_breakdown.items():
|
|
typed_breakdown[fmt_name] = FormatInfo(
|
|
count=fmt_data["count"],
|
|
size_bytes=fmt_data["size_bytes"],
|
|
size_human=self._human_size(fmt_data["size_bytes"]),
|
|
)
|
|
|
|
return LocalStorageStats(
|
|
total_tracks=total_tracks,
|
|
total_albums=len(album_dirs),
|
|
total_artists=len(artist_dirs),
|
|
total_size_bytes=total_size,
|
|
total_size_human=self._human_size(total_size),
|
|
disk_free_bytes=disk.free,
|
|
disk_free_human=self._human_size(disk.free),
|
|
format_breakdown=typed_breakdown,
|
|
)
|
|
|
|
@staticmethod
|
|
def _human_size(size_bytes: int) -> str:
|
|
size = float(size_bytes)
|
|
for unit in ("B", "KB", "MB", "GB", "TB"):
|
|
if abs(size) < 1024.0:
|
|
return f"{size:.1f} {unit}"
|
|
size /= 1024.0
|
|
return f"{size:.1f} PB"
|
|
|
|
async def verify_path(self, music_path_str: str) -> LocalFilesVerifyResponse:
|
|
return await asyncio.to_thread(self._verify_path_sync, music_path_str)
|
|
|
|
def _verify_path_sync(self, music_path_str: str) -> LocalFilesVerifyResponse:
|
|
music_path = Path(music_path_str)
|
|
if not music_path.exists():
|
|
return LocalFilesVerifyResponse(success=False, message=f"Path does not exist: {music_path_str}")
|
|
if not music_path.is_dir():
|
|
return LocalFilesVerifyResponse(success=False, message=f"Path is not a directory: {music_path_str}")
|
|
if not os.access(music_path, os.R_OK):
|
|
return LocalFilesVerifyResponse(success=False, message=f"Path is not readable: {music_path_str}")
|
|
|
|
track_count = 0
|
|
try:
|
|
for _root, _dirs, files in os.walk(music_path):
|
|
track_count += sum(1 for f in files if Path(f).suffix.lower() in AUDIO_EXTENSIONS)
|
|
if track_count > 50000:
|
|
break
|
|
except PermissionError:
|
|
return LocalFilesVerifyResponse(success=False, message="Permission denied while scanning directory")
|
|
|
|
return LocalFilesVerifyResponse(
|
|
success=True,
|
|
message=f"Connected — {track_count:,} audio files found",
|
|
track_count=track_count,
|
|
)
|