Allow stable bot build

cogs/music/musicCog.py

@@ -0,0 +1,128 @@
+import asyncio
+import discord
+from discord.ext import commands
+import youtube_dl
+import os
+
+ffmpeg_options = {
+    'options': '-vn'
+}
+
+ytdl_format_options = {
+    'format': 'bestaudio/best',
+    'outtmpl': '%(extractor)s-%(id)s-%(title)s.%(ext)s',
+    'restrictfilenames': True,
+    'noplaylist': True,
+    'nocheckcertificate': True,
+    'ignoreerrors': False,
+    'logtostderr': False,
+    'quiet': True,
+    'no_warnings': True,
+    'default_search': 'auto',
+    'source_address': '0.0.0.0' # bind to ipv4 since ipv6 addresses cause issues sometimes
+}
+
+ytdl = youtube_dl.YoutubeDL(ytdl_format_options)
+
+class YTDLSource(discord.PCMVolumeTransformer):
+    def __init__(self, source, *, data, volume=0.5):
+        super().__init__(source, volume)
+
+        self.data = data
+
+        self.title = data.get('title')
+        self.url = data.get('url')
+
+    @classmethod
+    async def from_url(cls, url, *, loop=None, stream=False):
+        loop = loop or asyncio.get_event_loop()
+        data = await loop.run_in_executor(None, lambda: ytdl.extract_info(url, download=not stream))
+
+        if 'entries' in data:
+            # take first item from a playlist
+            data = data['entries'][0]
+
+        filename = data['url'] if stream else ytdl.prepare_filename(data)
+        return cls(discord.FFmpegPCMAudio(filename, **ffmpeg_options), data=data)
+
+class MusicCog(commands.Cog):
+
+    def __init__(self, client):
+        self.client = client
+
+    # Commands
+
+    @commands.command()
+    async def play(self, ctx, *, url):
+        """Streams from a url (same as yt, but doesn't predownload)"""
+        try:
+            voiceChannel = discord.utils.get(ctx.guild.voice_channels, guild=ctx.guild)
+            await voiceChannel.connect()
+        except:
+            pass
+        async with ctx.typing():
+            player = await YTDLSource.from_url(url, loop=self.client.loop, stream=True)
+            ctx.voice_client.play(player, after=lambda e: print(f'Player error: {e}') if e else None)
+
+        await ctx.send(f'Now playing: {player.title}')
+
+    @commands.command()
+    async def leave(self, ctx):
+        voice = ctx.voice_client
+        if voice.is_connected():
+            await voice.disconnect()
+        else:
+            await ctx.send("The bot is not connected to a voice channel.")
+
+    @commands.command()
+    async def volume(self, ctx, volume: int):
+        """Changes the player's volume"""
+
+        if ctx.voice_client is None:
+            return await ctx.send("Not connected to a voice channel.")
+
+        ctx.voice_client.source.volume = volume / 100
+        await ctx.send(f"Changed volume to {volume}%")
+
+    @commands.command()
+    async def pause(self, ctx):
+        voice = ctx.voice_client
+        if voice.is_playing():
+            voice.pause()
+        else:
+            await ctx.send("Currently no audio is playing.")
+
+    @commands.command()
+    async def resume(self, ctx):
+        voice = ctx.voice_client
+        if voice.is_paused():
+            voice.resume()
+        else:
+            await ctx.send("The audio is not paused.")
+
+    @commands.command()
+    async def stop(self, ctx):
+        """Stops and disconnects the bot from voice"""
+
+        voice = ctx.voice_client
+        voice.stop()
+
+    @commands.command(aliases=['join'])
+    async def connect(self, ctx):
+        channel = ctx.author.voice.channel
+        try:
+            await channel.connect()
+        except:
+            voice = ctx.voice_client
+            if voice.is_connected():
+                await voice.disconnect()
+                await channel.connect()
+        else:
+            await channel.connect()
+
+    '''@commands.command(aliases=['dc','leave'])
+    async def disconnect(self, ctx):
+        await ctx.voice_client.disconnect()'''
+
+def setup(client):
+    client.add_cog(MusicCog(client))