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from lavalink import LoadResult, LoadType, Source, DeferredAudioTrack, PlaylistInfo
class LoadError(Exception): # We'll raise this if we have trouble loading our track.
pass
"""
Retrieve the playback URL for a custom track
"""
class CustomAudioTrack(DeferredAudioTrack):
# A DeferredAudioTrack allows us to load metadata now, and a playback URL later.
# This makes the DeferredAudioTrack highly efficient, particularly in cases
# where large playlists are loaded.
async def load(
self, client
): # Load our 'actual' playback track using the metadata from this one.
ytsearch = f"ytsearch:{self.title} {self.author} audio"
results = await client.get_tracks(ytsearch)
if not results.tracks or results.load_type in (
LoadType.EMPTY,
LoadType.ERROR,
):
dzsearch = f"dzsearch:{self.title} {self.author}"
results = await client.get_tracks(dzsearch)
if not results.tracks or results.load_type in (
LoadType.EMPTY,
LoadType.ERROR,
):
raise LoadError
first_track = results.tracks[0] # Grab the first track from the results.
base64 = first_track.track # Extract the base64 string from the track.
self.track = base64 # We'll store this for later, as it allows us to save making network requests
# if this track is re-used (e.g. repeat).
return base64
"""
Custom Source for Spotify links
"""
class SpotifySource(Source):
def __init__(self):
super().__init__(
name="custom"
) # Initialising our custom source with the name 'custom'.
async def load_item(self, user, metadata):
track = CustomAudioTrack(
{ # Create an instance of our CustomAudioTrack.
"identifier": metadata[
"id"
], # Fill it with metadata that we've obtained from our source's provider.
"isSeekable": True,
"author": metadata["artists"][0]["name"],
"length": metadata["duration_ms"],
"isStream": False,
"title": metadata["name"],
"uri": metadata["external_urls"]["spotify"],
"duration": metadata["duration_ms"],
"artworkUrl": metadata["album"]["images"][0]["url"],
},
requester=user,
)
return LoadResult(LoadType.TRACK, [track], playlist_info=PlaylistInfo.none())
async def load_album(self, user, metadata):
tracks = []
for track in metadata["tracks"][
"items"
]: # Loop through each track in the album.
tracks.append(
CustomAudioTrack(
{ # Create an instance of our CustomAudioTrack.
"identifier": track[
"id"
], # Fill it with metadata that we've obtained from our source's provider.
"isSeekable": True,
"author": track["artists"][0]["name"],
"length": track["duration_ms"],
"isStream": False,
"title": track["name"],
"uri": track["external_urls"]["spotify"],
"duration": track["duration_ms"],
"artworkUrl": metadata["images"][0]["url"],
},
requester=user,
)
)
return LoadResult(LoadType.PLAYLIST, tracks, playlist_info=PlaylistInfo.none())
async def load_playlist(self, user, metadata):
tracks = []
for track in metadata["tracks"][
"items"
]: # Loop through each track in the playlist.
tracks.append(
CustomAudioTrack(
{ # Create an instance of our CustomAudioTrack.
"identifier": track["track"][
"id"
], # Fill it with metadata that we've obtained from our source's provider.
"isSeekable": True,
"author": track["track"]["artists"][0]["name"],
"length": track["track"]["duration_ms"],
"isStream": False,
"title": track["track"]["name"],
"uri": track["track"]["external_urls"]["spotify"],
"duration": track["track"]["duration_ms"],
"artworkUrl": track["track"]["album"]["images"][0]["url"],
},
requster=user,
)
)
return LoadResult(LoadType.PLAYLIST, tracks, playlist_info=PlaylistInfo.none())
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