music-kraken-core/music_kraken/download/page_attributes.py

266 lines
9.9 KiB
Python

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