423 lines
15 KiB
Python
423 lines
15 KiB
Python
import logging
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import random
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from copy import copy
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from typing import Optional, Union, Type, Dict, Set, List, Tuple
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from string import Formatter
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import requests
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from bs4 import BeautifulSoup
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from ..connection import Connection
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from ..objects import (
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Song,
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Source,
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Album,
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Artist,
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Target,
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DatabaseObject,
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Options,
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Collection,
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Label,
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)
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from ..utils.enums.source import SourcePages
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from ..utils.enums.album import AlbumType
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from ..audio import write_metadata_to_target, correct_codec
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from ..utils import shared
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from ..utils.shared import DEFAULT_VALUES, DOWNLOAD_PATH, DOWNLOAD_FILE, THREADED, AUDIO_FORMAT
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from ..utils.support_classes import Query, DownloadResult, DefaultTarget, EndThread, FinishedSearch
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INDEPENDENT_DB_OBJECTS = Union[Label, Album, Artist, Song]
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INDEPENDENT_DB_TYPES = Union[Type[Song], Type[Album], Type[Artist], Type[Label]]
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class NamingDict(dict):
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CUSTOM_KEYS: Dict[str, str] = {
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"label": "label.name",
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"artist": "artist.name",
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"song": "song.title",
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"isrc": "song.isrc",
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"album": "album.title",
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"album_type": "album.album_type_string"
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}
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def __init__(self, values: dict, object_mappings: Dict[str, DatabaseObject] = None):
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self.object_mappings: Dict[str, DatabaseObject] = object_mappings or dict()
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super().__init__(values)
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self["audio_format"] = AUDIO_FORMAT
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def add_object(self, music_object: DatabaseObject):
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self.object_mappings[type(music_object).__name__.lower()] = music_object
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def copy(self) -> dict:
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return type(self)(super().copy(), self.object_mappings.copy())
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def __getitem__(self, key: str) -> str:
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return super().__getitem__(key)
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def default_value_for_name(self, name: str) -> str:
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return f'Various {name.replace("_", " ").title()}'
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def __missing__(self, key: str) -> str:
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"""
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TODO
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add proper logging
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"""
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if "." not in key:
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if key not in self.CUSTOM_KEYS:
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return self.default_value_for_name(key)
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key = self.CUSTOM_KEYS[key]
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frag_list = key.split(".")
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object_name = frag_list[0].strip().lower()
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attribute_name = frag_list[-1].strip().lower()
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if object_name not in self.object_mappings:
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return self.default_value_for_name(attribute_name)
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music_object = self.object_mappings[object_name]
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try:
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value = getattr(music_object, attribute_name)
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if value is None:
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return self.default_value_for_name(attribute_name)
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return str(value)
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except AttributeError:
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return self.default_value_for_name(attribute_name)
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def _clean_music_object(music_object: INDEPENDENT_DB_OBJECTS, collections: Dict[INDEPENDENT_DB_TYPES, Collection]):
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if type(music_object) == Label:
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return _clean_label(label=music_object, collections=collections)
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if type(music_object) == Artist:
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return _clean_artist(artist=music_object, collections=collections)
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if type(music_object) == Album:
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return _clean_album(album=music_object, collections=collections)
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if type(music_object) == Song:
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return _clean_song(song=music_object, collections=collections)
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def _clean_collection(collection: Collection, collection_dict: Dict[INDEPENDENT_DB_TYPES, Collection]):
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if collection.element_type not in collection_dict:
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return
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for i, element in enumerate(collection):
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r = collection_dict[collection.element_type].append(element, merge_into_existing=True)
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collection[i] = r.current_element
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if not r.was_the_same:
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_clean_music_object(r.current_element, collection_dict)
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def _clean_label(label: Label, collections: Dict[INDEPENDENT_DB_TYPES, Collection]):
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_clean_collection(label.current_artist_collection, collections)
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_clean_collection(label.album_collection, collections)
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def _clean_artist(artist: Artist, collections: Dict[INDEPENDENT_DB_TYPES, Collection]):
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_clean_collection(artist.main_album_collection, collections)
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_clean_collection(artist.feature_song_collection, collections)
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_clean_collection(artist.label_collection, collections)
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def _clean_album(album: Album, collections: Dict[INDEPENDENT_DB_TYPES, Collection]):
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_clean_collection(album.label_collection, collections)
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_clean_collection(album.song_collection, collections)
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_clean_collection(album.artist_collection, collections)
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def _clean_song(song: Song, collections: Dict[INDEPENDENT_DB_TYPES, Collection]):
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_clean_collection(song.album_collection, collections)
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_clean_collection(song.feature_artist_collection, collections)
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_clean_collection(song.main_artist_collection, collections)
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def clean_object(dirty_object: DatabaseObject) -> DatabaseObject:
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if isinstance(dirty_object, INDEPENDENT_DB_OBJECTS):
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collections = {
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Label: Collection(element_type=Label),
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Artist: Collection(element_type=Artist),
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Album: Collection(element_type=Album),
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Song: Collection(element_type=Song)
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}
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_clean_music_object(dirty_object, collections)
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return dirty_object
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def build_new_object(new_object: DatabaseObject) -> DatabaseObject:
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new_object = clean_object(new_object)
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new_object.compile(merge_into=False)
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return new_object
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def merge_together(old_object: DatabaseObject, new_object: DatabaseObject) -> DatabaseObject:
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new_object = clean_object(new_object)
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old_object.merge(new_object)
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old_object.compile(merge_into=False)
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return old_object
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class Page:
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"""
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This is an abstract class, laying out the
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functionality for every other class fetching something
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"""
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SOURCE_TYPE: SourcePages
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LOGGER = logging.getLogger("this shouldn't be used")
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def __init__(self):
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super().__init__()
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"""
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CODE I NEED WHEN I START WITH MULTITHREADING
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def __init__(self, end_event: EndThread, search_queue: Queue, search_result_queue: Queue):
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self.end_event = end_event
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self.search_queue = search_queue
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self.search_result_queue = search_result_queue
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super().__init__()
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@property
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def _empty_working_queues(self):
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return self.search_queue.empty()
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def run(self) -> None:
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while bool(self.end_event) and self._empty_working_queues:
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if not self.search_queue.empty():
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self.search(self.search_queue.get())
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self.search_result_queue.put(FinishedSearch())
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continue
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"""
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def get_source_type(self, source: Source) -> Optional[Type[DatabaseObject]]:
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return None
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def get_soup_from_response(self, r: requests.Response) -> BeautifulSoup:
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return BeautifulSoup(r.content, "html.parser")
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# to search stuff
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def search(self, query: Query) -> List[DatabaseObject]:
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music_object = query.music_object
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search_functions = {
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Song: self.song_search,
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Album: self.album_search,
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Artist: self.artist_search,
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Label: self.label_search
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}
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if type(music_object) in search_functions:
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r = search_functions[type(music_object)](music_object)
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if len(r) > 0:
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return r
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r = []
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for default_query in query.default_search:
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for single_option in self.general_search(default_query):
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r.append(single_option)
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return r
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def general_search(self, search_query: str) -> List[DatabaseObject]:
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return []
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def label_search(self, label: Label) -> List[Label]:
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return []
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def artist_search(self, artist: Artist) -> List[Artist]:
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return []
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def album_search(self, album: Album) -> List[Album]:
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return []
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def song_search(self, song: Song) -> List[Song]:
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return []
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def fetch_details(self, music_object: DatabaseObject, stop_at_level: int = 1) -> DatabaseObject:
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"""
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when a music object with lacking data is passed in, it returns
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the SAME object **(no copy)** with more detailed data.
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If you for example put in, an album, it fetches the tracklist
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:param music_object:
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:param stop_at_level:
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This says the depth of the level the scraper will recurse to.
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If this is for example set to 2, then the levels could be:
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1. Level: the album
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2. Level: every song of the album + every artist of the album
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If no additional requests are needed to get the data one level below the supposed stop level
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this gets ignored
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:return detailed_music_object: IT MODIFIES THE INPUT OBJ
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"""
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# creating a new object, of the same type
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new_music_object: DatabaseObject = type(music_object)()
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# only certain database objects, have a source list
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if isinstance(music_object, INDEPENDENT_DB_OBJECTS):
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source: Source
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for source in music_object.source_collection.get_sources_from_page(self.SOURCE_TYPE):
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new_music_object.merge(
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self.fetch_object_from_source(
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source=source,
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enforce_type=type(music_object),
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stop_at_level=stop_at_level,
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post_process=False
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)
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)
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return merge_together(music_object, new_music_object)
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def fetch_object_from_source(self, source: Source, stop_at_level: int = 2, enforce_type: Type[DatabaseObject] = None, post_process: bool = True) -> Optional[DatabaseObject]:
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obj_type = self.get_source_type(source)
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if obj_type is None:
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return None
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if enforce_type != obj_type and enforce_type is not None:
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self.LOGGER.warning(f"Object type isn't type to enforce: {enforce_type}, {obj_type}")
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return None
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music_object: DatabaseObject = None
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fetch_map = {
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Song: self.fetch_song,
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Album: self.fetch_album,
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Artist: self.fetch_artist,
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Label: self.fetch_label
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}
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if obj_type in fetch_map:
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music_object = fetch_map[obj_type](source, stop_at_level)
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else:
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self.LOGGER.warning(f"Can't fetch details of type: {obj_type}")
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return None
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if post_process and music_object:
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return build_new_object(music_object)
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return music_object
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def fetch_song(self, source: Source, stop_at_level: int = 1) -> Song:
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return Song()
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def fetch_album(self, source: Source, stop_at_level: int = 1) -> Album:
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return Album()
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def fetch_artist(self, source: Source, stop_at_level: int = 1) -> Artist:
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return Artist()
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def fetch_label(self, source: Source, stop_at_level: int = 1) -> Label:
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return Label()
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def download(self, music_object: DatabaseObject, genre: str, download_all: bool = False) -> DownloadResult:
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naming_dict: NamingDict = NamingDict({"genre": genre})
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def fill_naming_objects(naming_music_object: DatabaseObject):
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nonlocal naming_dict
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for collection_name in naming_music_object.UPWARDS_COLLECTION_ATTRIBUTES:
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collection: Collection = getattr(naming_music_object, collection_name)
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if collection.empty:
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continue
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dom_ordered_music_object: DatabaseObject = collection[0]
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naming_dict.add_object(dom_ordered_music_object)
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return fill_naming_objects(dom_ordered_music_object)
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fill_naming_objects(music_object)
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return self._download(music_object, naming_dict, download_all)
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def _download(self, music_object: DatabaseObject, naming_dict: NamingDict, download_all: bool = False) -> DownloadResult:
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# Skips all releases, that are defined in shared.ALBUM_TYPE_BLACKLIST, if download_all is False
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if isinstance(music_object, Album):
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if not download_all and music_object.album_type in shared.ALBUM_TYPE_BLACKLIST:
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return DownloadResult()
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self.fetch_details(music_object=music_object, stop_at_level=2)
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naming_dict.add_object(music_object)
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if isinstance(music_object, Song):
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return self._download_song(music_object, naming_dict)
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download_result: DownloadResult = DownloadResult()
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for collection_name in music_object.DOWNWARDS_COLLECTION_ATTRIBUTES:
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collection: Collection = getattr(music_object, collection_name)
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sub_ordered_music_object: DatabaseObject
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for sub_ordered_music_object in collection:
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download_result.merge(self._download(sub_ordered_music_object, naming_dict.copy(), download_all))
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return download_result
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def _download_song(self, song: Song, naming_dict: NamingDict):
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path_parts = Formatter().parse(DOWNLOAD_PATH)
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file_parts = Formatter().parse(DOWNLOAD_FILE)
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new_target = Target(
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relative_to_music_dir=True,
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path=DOWNLOAD_PATH.format(**{part[1]: naming_dict[part[1]] for part in path_parts}),
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file=DOWNLOAD_FILE.format(**{part[1]: naming_dict[part[1]] for part in file_parts})
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)
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if song.target_collection.empty:
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song.target_collection.append(new_target)
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sources = song.source_collection.get_sources_from_page(self.SOURCE_TYPE)
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if len(sources) == 0:
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return DownloadResult(error_message=f"No source found for {song.title} as {self.__class__.__name__}.")
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temp_target: Target = Target(
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path=shared.TEMP_DIR,
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file=str(random.randint(0, 999999))
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)
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source = sources[0]
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r = self.download_song_to_target(source=source, target=temp_target, desc=song.title)
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if not r.is_fatal_error:
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r.merge(self._post_process_targets(song, temp_target, source))
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return r
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def _post_process_targets(self, song: Song, temp_target: Target, source: Source) -> DownloadResult:
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correct_codec(temp_target, interval_list=self.get_skip_intervals(song, source))
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self.post_process_hook(song, temp_target)
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write_metadata_to_target(song.metadata, temp_target)
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r = DownloadResult()
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target: Target
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for target in song.target_collection:
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if temp_target is not target:
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temp_target.copy_content(target)
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r.add_target(target)
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temp_target.delete()
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return r
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def get_skip_intervals(self, song: Song, source: Source) -> List[Tuple[float, float]]:
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return []
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def post_process_hook(self, song: Song, temp_target: Target, **kwargs):
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pass
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def download_song_to_target(self, source: Source, target: Target, desc: str = None) -> DownloadResult:
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return DownloadResult()
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