import spotipy
from spotipy.oauth2 import SpotifyOAuth
from spotipy.exceptions import SpotifyException
from spotify_settings import getSpotifySettings


class spotifyAbstract:
    sp = None
    previousVolume = 20

    @staticmethod
    def SpotifyControl():
        if spotifyAbstract.sp is None:
            spotifySettings = getSpotifySettings()
            spotifyAbstract.sp = spotipy.Spotify(auth_manager=SpotifyOAuth(
                client_id=spotifySettings["client_id"],
                client_secret=spotifySettings["client_secret"],
                redirect_uri=spotifySettings["redirect_uri"],
                scope="user-modify-playback-state user-read-playback-state"
            ))

        return spotifyAbstract.sp

    @staticmethod
    def currentPlayback():
        try:
            return spotifyAbstract.SpotifyControl().current_playback()
        except SpotifyException as error:
            print("Could not check Spotify playback.")
            print(error)
            return None

    @staticmethod
    def somethingPlaying():
        playback = spotifyAbstract.currentPlayback()

        if playback is None:
            return False

        return playback["is_playing"]

    @staticmethod
    def getCurrentVolume():
        playback = spotifyAbstract.currentPlayback()

        if playback is None:
            return None

        if playback["device"] is None:
            return None

        return playback["device"]["volume_percent"]

    @staticmethod
    def setVolume(volume):
        if volume < 0:
            volume = 0

        if volume > 100:
            volume = 100

        try:
            spotifyAbstract.SpotifyControl().volume(volume)
            print(f"Spotify volume set to {volume}%")
        except SpotifyException as error:
            print("Could not set Spotify volume.")
            print(error)

    @staticmethod
    def pause():
        if not spotifyAbstract.somethingPlaying():
            print("Spotify is not currently playing. Not sending pause command.")
            return

        try:
            spotifyAbstract.SpotifyControl().pause_playback()
            print("Spotify paused.")
        except SpotifyException as error:
            print("Could not pause Spotify.")
            print(error)

    @staticmethod
    def play():
        try:
            spotifyAbstract.SpotifyControl().start_playback()
            print("Spotify started.")
        except SpotifyException as error:
            print("Could not start Spotify.")
            print(error)

    @staticmethod
    def togglePlayPause():
        if spotifyAbstract.somethingPlaying():
            spotifyAbstract.pause()
        else:
            spotifyAbstract.play()

    @staticmethod
    def nextTrack():
        if not spotifyAbstract.somethingPlaying():
            print("Spotify is not currently playing. Not sending next-track command.")
            return

        try:
            spotifyAbstract.SpotifyControl().next_track()
            print("Skipped to next track.")
        except SpotifyException as error:
            print("Could not skip track.")
            print(error)

    @staticmethod
    def previousTrack():
        if not spotifyAbstract.somethingPlaying():
            print("Spotify is not currently playing. Not sending previous-track command.")
            return

        try:
            spotifyAbstract.SpotifyControl().previous_track()
            print("Went to previous track.")
        except SpotifyException as error:
            print("Could not go to previous track.")
            print(error)

    @staticmethod
    def volumeUp():
        spotifyAbstract.volumeUpBy(5)

    @staticmethod
    def volumeUpBy(increment):
        volume = spotifyAbstract.getCurrentVolume()

        if volume is None:
            print("Could not read current Spotify volume.")
            return

        spotifyAbstract.setVolume(volume + increment)

    @staticmethod
    def volumeDown():
        spotifyAbstract.volumeDownBy(5)

    @staticmethod
    def volumeDownBy(increment):
        volume = spotifyAbstract.getCurrentVolume()

        if volume is None:
            print("Could not read current Spotify volume.")
            return

        spotifyAbstract.setVolume(volume - increment)

    @staticmethod
    def muteToggle():
        volume = spotifyAbstract.getCurrentVolume()

        if volume is None:
            print("Could not read current Spotify volume.")
            return

        if volume > 0:
            spotifyAbstract.previousVolume = volume
            spotifyAbstract.setVolume(0)
            print("Spotify muted.")
        else:
            spotifyAbstract.setVolume(spotifyAbstract.previousVolume)
            print("Spotify unmuted.")