music-kraken-core/src/music_kraken/objects/source.py

from collections import defaultdict
from enum import Enum
from typing import List, Dict, Set, Tuple, Optional
from urllib.parse import urlparse

from ..utils.enums.source import SourcePages, SourceTypes
from ..utils.shared import ALL_YOUTUBE_URLS
from .metadata import Mapping, Metadata
from .parents import DatabaseObject
from .collection import Collection


class Source(DatabaseObject):
    """
    create somehow like that
    ```python
    # url won't be a valid one due to it being just an example
    Source(src="youtube", url="https://youtu.be/dfnsdajlhkjhsd")
    ```
    """
    COLLECTION_ATTRIBUTES = tuple()
    SIMPLE_ATTRIBUTES = {
        "page_enum": None,
        "url": None,
        "referer_page": None,
        "audio_url": None
    }

    def __init__(
        self,
        page_enum: SourcePages,
        url: str = None,
        id_: str = None,
        referer_page: SourcePages = None,
        adio_url: str = None
    ) -> None:
        DatabaseObject.__init__(self, id_=id_)

        self.page_enum = page_enum
        self.referer_page = page_enum if referer_page is None else referer_page

        self.url = url
        self.audio_url = adio_url

    @classmethod
    def match_url(cls, url: str, referer_page: SourcePages) -> Optional["Source"]:
        """
        this shouldn't be used, unlesse you are not certain what the source is for
        the reason is that it is more inefficient
        """
        parsed = urlparse(url)
        url = parsed.geturl()
        
        if "musify" in parsed.netloc:
            return cls(SourcePages.MUSIFY, url, referer_page=referer_page)

        if parsed.netloc in [url.netloc for url in ALL_YOUTUBE_URLS]:
            return cls(SourcePages.YOUTUBE, url, referer_page=referer_page)

        if url.startswith("https://www.deezer"):
            return cls(SourcePages.DEEZER, url, referer_page=referer_page)
        
        if url.startswith("https://open.spotify.com"):
            return cls(SourcePages.SPOTIFY, url, referer_page=referer_page)

        if "bandcamp" in url:
            return cls(SourcePages.BANDCAMP, url, referer_page=referer_page)

        if "wikipedia" in parsed.netloc:
            return cls(SourcePages.WIKIPEDIA, url, referer_page=referer_page)

        if url.startswith("https://www.metal-archives.com/"):
            return cls(SourcePages.ENCYCLOPAEDIA_METALLUM, url, referer_page=referer_page)

        # the less important once
        if url.startswith("https://www.facebook"):
            return cls(SourcePages.FACEBOOK, url, referer_page=referer_page)

        if url.startswith("https://www.instagram"):
            return cls(SourcePages.INSTAGRAM, url, referer_page=referer_page)

        if url.startswith("https://twitter"):
            return cls(SourcePages.TWITTER, url, referer_page=referer_page)

        if url.startswith("https://myspace.com"):
            return cls(SourcePages.MYSPACE, url, referer_page=referer_page)

    def get_song_metadata(self) -> Metadata:
        return Metadata({
            Mapping.FILE_WEBPAGE_URL: [self.url],
            Mapping.SOURCE_WEBPAGE_URL: [self.homepage]
        })

    def get_artist_metadata(self) -> Metadata:
        return Metadata({
            Mapping.ARTIST_WEBPAGE_URL: [self.url]
        })

    @property
    def metadata(self) -> Metadata:
        return self.get_song_metadata()

    @property
    def indexing_values(self) -> List[Tuple[str, object]]:
        return [
            ('id', self.id),
            ('url', self.url),
            ('audio_url', self.audio_url),
        ]

    def __str__(self):
        return self.__repr__()

    def __repr__(self) -> str:
        return f"Src({self.page_enum.value}: {self.url}, {self.audio_url})"

    page_str = property(fget=lambda self: self.page_enum.value)
    type_str = property(fget=lambda self: self.type_enum.value)
    homepage = property(fget=lambda self: SourcePages.get_homepage(self.page_enum))


class SourceCollection(Collection):
    def __init__(self, source_list: List[Source]):
        self._page_to_source_list: Dict[SourcePages, List[Source]] = defaultdict(list)

        super().__init__(data=source_list, element_type=Source)

    def map_element(self, source: Source):
        super().map_element(source)

        self._page_to_source_list[source.page_enum].append(source)
        
    @property
    def source_pages(self) -> Set[SourcePages]:
        return set(source.page_enum for source in self._data)

    def get_sources_from_page(self, source_page: SourcePages) -> List[Source]:
        """
        getting the sources for a specific page like
        YouTube or musify
        """
        return self._page_to_source_list[source_page].copy()