Kur01234
265c9f462f
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329 lines
12 KiB
Python
329 lines
12 KiB
Python
from typing import Tuple, Type, Dict, Set, Optional, List
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from collections import defaultdict
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from pathlib import Path
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import re
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import logging
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from . import FetchOptions, DownloadOptions
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from .results import SearchResults
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from ..objects import (
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DatabaseObject as DataObject,
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Collection,
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Target,
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Source,
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Options,
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Song,
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Album,
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Artist,
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Label,
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)
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from ..audio import write_metadata_to_target, correct_codec
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from ..utils import output, BColors
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from ..utils.string_processing import fit_to_file_system
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from ..utils.config import youtube_settings, main_settings
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from ..utils.path_manager import LOCATIONS
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from ..utils.enums import SourceType, ALL_SOURCE_TYPES
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from ..utils.support_classes.download_result import DownloadResult
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from ..utils.support_classes.query import Query
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from ..utils.support_classes.download_result import DownloadResult
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from ..utils.exception import MKMissingNameException
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from ..utils.exception.download import UrlNotFoundException
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from ..utils.shared import DEBUG_PAGES
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from ..pages import Page, EncyclopaediaMetallum, Musify, YouTube, YoutubeMusic, Bandcamp, Musicbrainz, Genius, INDEPENDENT_DB_OBJECTS
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ALL_PAGES: Set[Type[Page]] = {
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# EncyclopaediaMetallum,
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Genius,
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Musify,
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YoutubeMusic,
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Bandcamp,
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Musicbrainz
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}
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if youtube_settings["use_youtube_alongside_youtube_music"]:
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ALL_PAGES.add(YouTube)
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AUDIO_PAGES: Set[Type[Page]] = {
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Musify,
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YouTube,
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YoutubeMusic,
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Bandcamp
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}
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SHADY_PAGES: Set[Type[Page]] = {
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Musify,
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}
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fetch_map = {
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Song: "fetch_song",
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Album: "fetch_album",
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Artist: "fetch_artist",
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Label: "fetch_label",
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}
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if DEBUG_PAGES:
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DEBUGGING_PAGE = Bandcamp
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print(f"Only downloading from page {DEBUGGING_PAGE}.")
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ALL_PAGES = {DEBUGGING_PAGE}
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AUDIO_PAGES = ALL_PAGES.union(AUDIO_PAGES)
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class Pages:
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def __init__(self, exclude_pages: Set[Type[Page]] = None, exclude_shady: bool = False, download_options: DownloadOptions = None, fetch_options: FetchOptions = None):
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self.LOGGER = logging.getLogger("download")
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self.download_options: DownloadOptions = download_options or DownloadOptions()
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self.fetch_options: FetchOptions = fetch_options or FetchOptions()
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# initialize all page instances
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self._page_instances: Dict[Type[Page], Page] = dict()
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self._source_to_page: Dict[SourceType, Type[Page]] = dict()
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exclude_pages = exclude_pages if exclude_pages is not None else set()
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if exclude_shady:
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exclude_pages = exclude_pages.union(SHADY_PAGES)
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if not exclude_pages.issubset(ALL_PAGES):
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raise ValueError(f"The excluded pages have to be a subset of all pages: {exclude_pages} | {ALL_PAGES}")
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def _set_to_tuple(page_set: Set[Type[Page]]) -> Tuple[Type[Page], ...]:
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return tuple(sorted(page_set, key=lambda page: page.__name__))
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self._pages_set: Set[Type[Page]] = ALL_PAGES.difference(exclude_pages)
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self.pages: Tuple[Type[Page], ...] = _set_to_tuple(self._pages_set)
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self._audio_pages_set: Set[Type[Page]] = self._pages_set.intersection(AUDIO_PAGES)
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self.audio_pages: Tuple[Type[Page], ...] = _set_to_tuple(self._audio_pages_set)
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for page_type in self.pages:
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self._page_instances[page_type] = page_type(fetch_options=self.fetch_options, download_options=self.download_options)
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self._source_to_page[page_type.SOURCE_TYPE] = page_type
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def _get_page_from_enum(self, source_page: SourceType) -> Page:
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if source_page not in self._source_to_page:
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return None
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return self._page_instances[self._source_to_page[source_page]]
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def search(self, query: Query) -> SearchResults:
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result = SearchResults()
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for page_type in self.pages:
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result.add(
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page=page_type,
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search_result=self._page_instances[page_type].search(query=query)
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)
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return result
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def fetch_details(self, data_object: DataObject, stop_at_level: int = 1, **kwargs) -> DataObject:
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if not isinstance(data_object, INDEPENDENT_DB_OBJECTS):
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return data_object
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source: Source
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for source in data_object.source_collection.get_sources(source_type_sorting={
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"only_with_page": True,
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}):
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new_data_object = self.fetch_from_source(source=source, stop_at_level=stop_at_level)
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if new_data_object is not None:
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data_object.merge(new_data_object)
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return data_object
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def fetch_from_source(self, source: Source, **kwargs) -> Optional[DataObject]:
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if not source.has_page:
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return None
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source_type = source.page.get_source_type(source=source)
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if source_type is None:
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self.LOGGER.debug(f"Could not determine source type for {source}.")
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return None
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func = getattr(source.page, fetch_map[source_type])
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# fetching the data object and marking it as fetched
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data_object: DataObject = func(source=source, **kwargs)
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data_object.mark_as_fetched(source.hash_url)
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return data_object
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def fetch_from_url(self, url: str) -> Optional[DataObject]:
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source = Source.match_url(url, ALL_SOURCE_TYPES.MANUAL)
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if source is None:
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return None
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return self.fetch_from_source(source=source)
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def _skip_object(self, data_object: DataObject) -> bool:
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if isinstance(data_object, Album):
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if not self.download_options.download_all and data_object.album_type in self.download_options.album_type_blacklist:
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return True
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return False
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def download(self, data_object: DataObject, genre: str, **kwargs) -> DownloadResult:
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# fetch the given object
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self.fetch_details(data_object)
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output(f"\nDownloading {data_object.option_string}...", color=BColors.BOLD)
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# fetching all parent objects (e.g. if you only download a song)
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if not kwargs.get("fetched_upwards", False):
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to_fetch: List[DataObject] = [data_object]
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while len(to_fetch) > 0:
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new_to_fetch = []
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for d in to_fetch:
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if self._skip_object(d):
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continue
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self.fetch_details(d)
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for c in d.get_parent_collections():
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new_to_fetch.extend(c)
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to_fetch = new_to_fetch
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kwargs["fetched_upwards"] = True
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# download all children
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download_result: DownloadResult = DownloadResult()
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for c in data_object.get_child_collections():
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for d in c:
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if self._skip_object(d):
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continue
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download_result.merge(self.download(d, genre, **kwargs))
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# actually download if the object is a song
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if isinstance(data_object, Song):
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"""
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TODO
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add the traced artist and album to the naming.
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I am able to do that, because duplicate values are removed later on.
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"""
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self._download_song(data_object, naming={
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"genre": [genre],
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"audio_format": [main_settings["audio_format"]],
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})
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return download_result
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def _extract_fields_from_template(self, path_template: str) -> Set[str]:
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return set(re.findall(r"{([^}]+)}", path_template))
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def _parse_path_template(self, path_template: str, naming: Dict[str, List[str]]) -> str:
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field_names: Set[str] = self._extract_fields_from_template(path_template)
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for field in field_names:
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if len(naming[field]) == 0:
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raise MKMissingNameException(f"Missing field for {field}.")
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path_template = path_template.replace(f"{{{field}}}", naming[field][0])
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return path_template
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def _download_song(self, song: Song, naming: dict) -> DownloadOptions:
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"""
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TODO
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Search the song in the file system.
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"""
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r = DownloadResult(total=1)
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# pre process the data recursively
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song.compile()
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# manage the naming
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naming: Dict[str, List[str]] = defaultdict(list, naming)
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naming["song"].append(song.title_value)
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naming["isrc"].append(song.isrc)
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naming["album"].extend(a.title_value for a in song.album_collection)
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naming["album_type"].extend(a.album_type.value for a in song.album_collection)
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naming["artist"].extend(a.name for a in song.artist_collection)
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naming["artist"].extend(a.name for a in song.feature_artist_collection)
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for a in song.album_collection:
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naming["label"].extend([l.title_value for l in a.label_collection])
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# removing duplicates from the naming, and process the strings
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for key, value in naming.items():
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# https://stackoverflow.com/a/17016257
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naming[key] = list(dict.fromkeys(value))
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song.genre = naming["genre"][0]
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# manage the targets
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tmp: Target = Target.temp(file_extension=main_settings["audio_format"])
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song.target_collection.append(Target(
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relative_to_music_dir=True,
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file_path=Path(
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self._parse_path_template(main_settings["download_path"], naming=naming),
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self._parse_path_template(main_settings["download_file"], naming=naming),
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)
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))
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for target in song.target_collection:
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if target.exists:
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output(f'{target.file_path} {BColors.OKGREEN.value}[already exists]', color=BColors.GREY)
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r.found_on_disk += 1
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if not self.download_options.download_again_if_found:
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target.copy_content(tmp)
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else:
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target.create_path()
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output(f'{target.file_path}', color=BColors.GREY)
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# this streams from every available source until something succeeds, setting the skip intervals to the values of the according source
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used_source: Optional[Source] = None
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skip_intervals: List[Tuple[float, float]] = []
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for source in song.source_collection.get_sources(source_type_sorting={
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"only_with_page": True,
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"sort_key": lambda page: page.download_priority,
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"reverse": True,
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}):
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if tmp.exists:
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break
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used_source = source
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streaming_results = source.page.download_song_to_target(source=source, target=tmp, desc="download")
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skip_intervals = source.page.get_skip_intervals(song=song, source=source)
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# if something has been downloaded but it somehow failed, delete the file
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if streaming_results.is_fatal_error and tmp.exists:
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tmp.delete()
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# if everything went right, the file should exist now
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if not tmp.exists:
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if used_source is None:
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r.error_message = f"No source found for {song.option_string}."
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else:
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r.error_message = f"Something went wrong downloading {song.option_string}."
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return r
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# post process the audio
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found_on_disk = used_source is None
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if not found_on_disk or self.download_options.process_audio_if_found:
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correct_codec(target=tmp, skip_intervals=skip_intervals)
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r.sponsor_segments = len(skip_intervals)
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if used_source is not None:
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used_source.page.post_process_hook(song=song, temp_target=tmp)
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if not found_on_disk or self.download_options.process_metadata_if_found:
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write_metadata_to_target(metadata=song.metadata, target=tmp, song=song)
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# copy the tmp target to the final locations
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for target in song.target_collection:
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tmp.copy_content(target)
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tmp.delete()
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return r
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def fetch_url(self, url: str, stop_at_level: int = 2) -> Tuple[Type[Page], DataObject]:
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source = Source.match_url(url, ALL_SOURCE_TYPES.MANUAL)
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if source is None:
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raise UrlNotFoundException(url=url)
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_actual_page = self._source_to_page[source.source_type]
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return _actual_page, self._page_instances[_actual_page].fetch_object_from_source(source=source, stop_at_level=stop_at_level) |