from enum import Enum
from typing import List, Dict

from .metadata import Mapping, MetadataAttribute
from .parents import (
    DatabaseObject,
    SongAttribute,
)


class SourceTypes(Enum):
    SONG = "song"
    ALBUM = "album"
    ARTIST = "artist"
    LYRICS = "lyrics"


class SourcePages(Enum):
    YOUTUBE = "youtube"
    MUSIFY = "musify"
    GENIUS = "genius"
    MUSICBRAINZ = "musicbrainz"
    ENCYCLOPAEDIA_METALLUM = "encyclopaedia metallum"

    @classmethod
    def get_homepage(cls, attribute) -> str:
        homepage_map = {
            cls.YOUTUBE: "https://www.youtube.com/",
            cls.MUSIFY: "https://musify.club/",
            cls.MUSICBRAINZ: "https://musicbrainz.org/",
            cls.ENCYCLOPAEDIA_METALLUM: "https://www.metal-archives.com/",
            cls.GENIUS: "https://genius.com/"
        }
        return homepage_map[attribute]


class Source(DatabaseObject, SongAttribute, MetadataAttribute):
    """
    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")
    ```
    """

    def __init__(self, page_enum, url: str, id_: str = None, type_enum=None) -> None:
        DatabaseObject.__init__(self, id_=id_)
        SongAttribute.__init__(self)

        self.type_enum = type_enum
        self.page_enum = page_enum

        self.url = url

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

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

    def get_metadata(self) -> MetadataAttribute.Metadata:
        if self.type_enum == SourceTypes.SONG:
            return self.get_song_metadata()

        if self.type_enum == SourceTypes.ARTIST:
            return self.get_artist_metadata()

        return super().get_metadata()

    def __str__(self):
        return f"{self.page_enum}: {self.url}"

    def __repr__(self) -> str:
        return f"Src({self.page_enum.value}: {self.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 SourceAttribute:
    """
    This is a class that is meant to be inherited from.
    it adds the source_list attribute to a class
    """
    _source_dict: Dict[object, List[Source]]

    def __new__(cls, **_):
        new = object.__new__(cls)
        new._source_dict = {page_enum: list() for page_enum in SourcePages}
        return new

    def add_source(self, source: Source):
        """
        adds a new Source to the sources
        """
        self._source_dict[source.page_enum].append(source)

    def get_sources_from_page(self, page_enum) -> List[Source]:
        """
        getting the sources for a specific page like
        youtube or musify
        """
        return self._source_dict[page_enum]

    def get_source_list(self) -> List[Source]:
        """
        gets all sources
        """
        return [item for _, page_list in self._source_dict.items() for item in page_list]

    def set_source_list(self, source_list: List[Source]):
        self._source_dict = {page_enum: list() for page_enum in SourcePages}

        for source in source_list:
            self.add_source(source)

    def get_source_dict(self) -> Dict[object, List[Source]]:
        """
        gets a dictionary of all Sources,
        where the key is a page enum, 
        and the value is a List with all sources of according page
        """
        return self._source_dict

    source_list: List[Source] = property(fget=get_source_list, fset=set_source_list)
    source_dict: Dict[object, List[Source]] = property(fget=get_source_dict)