from typing import Dict
from typing import List

from sanitize_filename import sanitize

from ytdl_subscribe.entries.entry import Entry


class SoundcloudTrack(Entry):
    """
    Entry object to represent a Soundcloud track yt-dlp that is a single, which implies
    it does not belong to an album.
    """

    @property
    def track_number(self) -> int:
        """Returns the entry's track number. Since this is a single, it will always be 1"""
        return 1

    @property
    def track_number_padded(self) -> str:
        """Returns the entry's padded track number, to the tens-place"""
        return f"{self.track_number:02d}"

    @property
    def album(self) -> str:
        """Returns the entry's album name. Since this is a single, set the album to the title"""
        return self.title

    @property
    def sanitized_album(self) -> str:
        """Returns the entry's sanitized album name"""
        return sanitize(self.album)

    @property
    def album_year(self) -> int:
        """Returns the entry's album year. Since this is a single, use the upload year"""
        return self.upload_year

    @property
    def is_premiere(self) -> bool:
        """
        Returns whether the entry is a premier track. Check this by seeing if the track's url is
        a preview.
        """
        return "/preview/" in self.kwargs("url")

    def to_dict(self) -> Dict:
        """Returns the entry's values as a dictionary."""
        return dict(
            super().to_dict(),
            **{
                "track_number": self.track_number,
                "track_number_padded": self.track_number_padded,
                "album": self.album,
                "sanitized_album": self.sanitized_album,
                "album_year": self.album_year,
                "is_premiere": self.is_premiere,
            },
        )


class SoundcloudAlbumTrack(SoundcloudTrack):
    """
    Entry object to represent a Soundcloud track yt-dlp that belongs to an album.
    """

    def __init__(self, album: str, track_number: int, album_year: int, **kwargs):
        """
        Initialize the album track using album metadata and ytdl metadata for the specific track.
        """
        super().__init__(**kwargs)
        self._album = album
        self._track_number = track_number
        self._album_year = album_year

    @property
    def track_number(self) -> int:
        """Returns the entry's track number"""
        return self._track_number

    @property
    def album(self) -> str:
        """Returns the entry's album name, fetched from its internal album"""
        return self._album

    @property
    def album_year(self) -> int:
        """Returns the entry's album year, fetched from its internal album"""
        return self._album_year


class SoundcloudAlbum(Entry):
    """
    Entry object to represent a Soundcloud album.
    """

    @property
    def _single_tracks(self) -> List[SoundcloudTrack]:
        """
        Returns all tracks in the album represented by singles. Use this to fetch any
        data needed from the tracks before representing it as an album track.
        """
        return [SoundcloudTrack(**entry) for entry in self.kwargs("entries")]

    def album_tracks(
        self, skip_premiere_tracks: bool = True
    ) -> List[SoundcloudAlbumTrack]:
        """
        Returns all tracks in the album represented as album-tracks. They will share the
        same album name, have ordered track numbers, and a shared album year.
        """
        album_tracks = [
            SoundcloudAlbumTrack(
                album=self.title,
                track_number=i + 1,
                album_year=self.album_year,
                **entry,
            )
            for i, entry in enumerate(self.kwargs("entries"))
        ]
        if skip_premiere_tracks:
            album_tracks = [t for t in album_tracks if not t.is_premiere]

        return album_tracks

    @property
    def album_year(self) -> int:
        """Returns the album's year, computed by the max upload year amongst all album tracks"""
        return max(track.upload_year for track in self._single_tracks)

    def contains(self, track: SoundcloudTrack) -> bool:
        """Returns whether the album contains a track"""
        return any(track.uid == t.uid for t in self._single_tracks)