Merge pull request #7 from strNophix/lavalink-redis

Lavalink redis

cogs/information.py

@@ -43,7 +43,9 @@ class InformationCog(commands.Cog, name="Information"):
     @commands.cooldown(rate=1, per=5, type=commands.BucketType.user)
     async def invite(self, ctx: Context):
         """Gets the invite link!"""
-        await EmbedGenerator.Message(ctx, "Add our bot to your server:", self.bot.invite_link)
+        await EmbedGenerator.Message(
+            ctx, "Add our bot to your server:", self.bot.invite_link
+        )
 
     @commands.command(
         name="wlinfo",
@@ -77,7 +79,7 @@ class InformationCog(commands.Cog, name="Information"):
     @commands.command(name="help", aliases=["about", "info"], slash_command=True)
     @commands.cooldown(1, 1, commands.BucketType.user)
     async def about(self, ctx: Context):
-        """Exobot command list"""
+        """ChristmasBot command list"""
         if None:
             entity = self.bot.get_cog(command) or self.bot.get_command(command)
 

cogs/music.py

@@ -1,13 +1,18 @@
+import asyncio
 import re
+from aioredis.client import Redis
 
 import discord
+from discord.channel import TextChannel
 from discord.ext.commands.context import Context
 import lavalink
 from discord.ext import commands
-from lavalink.models import DefaultPlayer
+from lavalink.models import AudioTrack, DefaultPlayer
 
 from bot import ChristmasBot
 from utils.EmbedGenerator import EmbedGenerator
+from context import CustomContext
+from discord import Embed
 
 url_rx = re.compile(r"https?://(?:www\.)?.+")
 
@@ -16,15 +21,7 @@ class LavalinkVoiceClient(discord.VoiceClient):
     def __init__(self, client: discord.Client, channel: discord.abc.Connectable):
         self.client = client
         self.channel = channel
-        # ensure there exists a client already
-        if hasattr(self.client, "lavalink"):
-            self.lavalink = self.client.lavalink
-        else:
-            self.client.lavalink = lavalink.Client(client.user.id)
-            self.client.lavalink.add_node(
-                "localhost", 2333, "youshallnotpass", "us", "default-node"
-            )
-            self.lavalink = self.client.lavalink
+        self.lavalink = self.client.lavalink
 
     async def on_voice_server_update(self, data):
         # the data needs to be transformed before being handed down to
@@ -94,9 +91,13 @@ class Music(commands.Cog):
     async def cog_before_invoke(self, ctx):
         """Command before-invoke handler."""
         guild_check = ctx.guild is not None
+
         #  This is essentially the same as `@commands.guild_only()`
         #  except it saves us repeating ourselves (and also a few lines).
 
+        if not hasattr(self.bot, "lavalink"):
+            await ctx.send("Still starting please wait a moment.")
+
         if guild_check:
             await self.ensure_voice(ctx)
             #  Ensure that the bot and command author share a mutual voicechannel.
@@ -124,7 +125,7 @@ class Music(commands.Cog):
 
         # These are commands that require the bot to join a voicechannel (i.e. initiating playback).
         # Commands such as volume/skip etc don't require the bot to be in a voicechannel so don't need listing here.
-        should_connect = ctx.command.name in ("play",)
+        should_connect = ctx.command.name in ("connect",)
 
         if not ctx.author.voice or not ctx.author.voice.channel:
             # Our cog_command_error handler catches this and sends it to the voicechannel.
@@ -159,39 +160,73 @@ class Music(commands.Cog):
             guild_id = int(event.player.guild_id)
             guild = self.bot.get_guild(guild_id)
             await guild.voice_client.disconnect(force=True)
+        elif isinstance(event, lavalink.events.TrackStartEvent):
+            channel_id = int(event.player.fetch("channel"))
+            channel: TextChannel = self.bot.get_channel(channel_id)
 
-    @commands.command(name="play", aliases=["p", "connect", "join"])
-    @commands.guild_only()
-    async def play(self, ctx: Context):
-        """Searches and plays a song from a given query."""
+            color = self.bot.colors["embed"]
+            current_track: AudioTrack = event.player.current
+            embed = Embed(
+                title="Now playing:",
+                description=f"[{current_track.title}]({current_track.uri})",
+                color=color,
+            )
+            await channel.send(embed=embed)
+        elif isinstance(event, lavalink.events.TrackEndEvent):
+            query = await self.bot._redis_client.randomkey()
+            result = await event.player.node.get_tracks(query)
+            if not result or not result["tracks"]:
+                return
+
+            track = lavalink.models.AudioTrack(
+                result["tracks"][0], self.bot.user.id, recommended=False
+            )
+            event.player.add(requester=self.bot.user.id, track=track)
+
+    @commands.command(name="connect", aliases=["p", "play", "join"])
+    async def play(self, ctx: CustomContext):
+        """Starts playing Christmas bangers"""
         # Get the player for this guild from cache.
         player: DefaultPlayer = self.bot.lavalink.player_manager.get(ctx.guild.id)
-        query = "https://youtu.be/VcIt_AcOPjs"
+        redis_client: Redis = ctx.get_redis()
+        pipeline = redis_client.pipeline()
+        for _ in range(self.bot.config["queue_buffer_size"]):
+            pipeline.randomkey()
+
+        queries = await pipeline.execute()
 
         # Get the results for the query from Lavalink.
-        results = await player.node.get_tracks(query)
+        for query in queries:
+            result = await player.node.get_tracks(query)
+            if not result or not result["tracks"]:
+                continue
 
-        # Results could be None if Lavalink returns an invalid response (non-JSON/non-200 (OK)).
-        # ALternatively, resullts['tracks'] could be an empty array if the query yielded no tracks.
-        if not results or not results["tracks"]:
-            return await EmbedGenerator.Title(ctx, "Nothing found!")
-
-        # Theoretically songs will always be TRACK_LOADED
-        track = results["tracks"][0]
-        await EmbedGenerator.Message(
-            ctx, "Track Enqueued", f'[{track["info"]["title"]}]({track["info"]["uri"]})'
-        )
-
-        track = lavalink.models.AudioTrack(track, ctx.author.id, recommended=True)
-        player.add(requester=ctx.author.id, track=track)
+            track = lavalink.models.AudioTrack(
+                result["tracks"][0], ctx.author.id, recommended=False
+            )
+            player.add(requester=ctx.author.id, track=track)
 
         if not player.is_playing:
             await player.play()
 
+        await ctx.send("Started playing")
+
+    @commands.command(name="skip", aliases=["next"])
+    async def skip(self, ctx: Context):
+        """I heard this song way too often"""
+        player: DefaultPlayer = self.bot.lavalink.player_manager.get(ctx.guild.id)
+        await player.skip()
+        await ctx.send("Skipped current song")
+
+    @commands.command(name="queue")
+    async def queue(self, ctx: Context):
+        """Ghetto queue"""
+        player: DefaultPlayer = self.bot.lavalink.player_manager.get(ctx.guild.id)
+        await EmbedGenerator.Message(ctx, "Queue:", player.queue)
+
     @commands.command(name="disconnect", aliases=["dc", "stop"])
-    @commands.guild_only()
     async def disconnect(self, ctx: Context):
-        """Disconnects the player from the voice channel and clears its queue."""
+        """Disconnects ChristmasBot"""
         player: DefaultPlayer = self.bot.lavalink.player_manager.get(ctx.guild.id)
 
         if not player.is_connected:

config.json.sample

@@ -18,5 +18,6 @@
         "description": "A sample bot description"
     },
     "cogs": ["cogs.owner", "cogs.settings", "cogs.information", "cogs.music"],
-    "slash_command_guilds": []
+    "slash_command_guilds": [],
+    "queue_buffer_size": 5
 }