Added `build_track to node/client.

`build_track` takes in a tracks unique base64 encoded identifier and builds and returns a `Track` object.

wavelink/__init__.py

@@ -2,7 +2,7 @@
 __author__ = 'EvieePy'
 __license__ = 'MIT'
 __copyright__ = 'Copyright 2019-2020 (c) PythonistaGuild'
-__version__ = '0.5.03'
+__version__ = '0.6.0'
 
 from .client import Client
 from .errors import *

wavelink/client.py

@@ -108,6 +108,35 @@ async def get_tracks(self, query: str) -> Optional[list]:
 
         return await node.get_tracks(query)
 
+    async def build_track(self, identifier: str):
+        """|coro|
+
+        Build a track object with a valid track identifier.
+
+        Parameters
+        ------------
+        identifier: str
+            The tracks unique Base64 encoded identifier. This is usually retrieved from various lavalink events.
+
+        Returns
+        ---------
+        :class:`wavelink.player.Track`
+            The track built from a Base64 identifier.
+
+        Raises
+        --------
+        ZeroConnectedNodes
+            There are no :class:`wavelink.node.Node`s currently connected.
+        BuildTrackError
+            Decoding and building the track failed.
+        """
+        node = self.get_best_node()
+
+        if node is None:
+            raise ZeroConnectedNodes
+
+        return await node.build_track(identifier)
+
     def _get_players(self) -> dict:
         players = []
 

wavelink/errors.py

@@ -40,3 +40,7 @@ class ZeroConnectedNodes(WavelinkException):
 
 class AuthorizationFailure(WavelinkException):
     """Exception raised when an invalid password is provided toa node."""
+
+
+class BuildTrackError(WavelinkException):
+    """Exception raised when a track is failed to be decoded and re-built."""

wavelink/node.py

@@ -146,6 +146,37 @@ async def get_tracks(self, query: str) -> Union[list, TrackPlaylist, None]:
 
             return tracks
 
+    async def build_track(self, identifier: str) -> Track:
+        """|coro|
+
+        Build a track object with a valid track identifier.
+
+        Parameters
+        ------------
+        identifier: str
+            The tracks unique Base64 encoded identifier. This is usually retrieved from various lavalink events.
+
+        Returns
+        ---------
+        :class:`wavelink.player.Track`
+            The track built from a Base64 identifier.
+
+        Raises
+        --------
+        BuildTrackError
+            Decoding and building the track failed.
+        """
+        async with self.session.get(f'{self.rest_uri}/decodetrack?track={identifier}',
+                                    headers={'Authorization': self.password}) as resp:
+            data = await resp.json()
+
+            if not resp.status == 200:
+                raise BuildTrackError(f'Failed to build track. Status: {data["status"]}, Error: {data["error"]}.'
+                                      f'Check the identfier is correct and try again.')
+
+            track = Track(id_=identifier, info=data)
+            return track
+
     def get_player(self, guild_id: int) -> Optional[Player]:
         """Retrieve a player object associated with the Node.