音楽botの改良について

前提・実現したいこと

pythonの音楽Botテンプレを改良してもらいたいです

該当のソースコード

python
1import asyncio
2
3import discord
4import youtube_dl
5
6from discord.ext import commands
7
8# Suppress noise about console usage from errors
9youtube_dl.utils.bug_reports_message = lambda: ''
10
11
12ytdl_format_options = {
13    'format': 'bestaudio/best',
14    'outtmpl': '%(extractor)s-%(id)s-%(title)s.%(ext)s',
15    'restrictfilenames': True,
16    'noplaylist': True,
17    'nocheckcertificate': True,
18    'ignoreerrors': False,
19    'logtostderr': False,
20    'quiet': True,
21    'no_warnings': True,
22    'default_search': 'auto',
23    'source_address': '0.0.0.0' # bind to ipv4 since ipv6 addresses cause issues sometimes
24}
25
26ffmpeg_options = {
27    'options': '-vn'
28}
29
30ytdl = youtube_dl.YoutubeDL(ytdl_format_options)
31
32
33class YTDLSource(discord.PCMVolumeTransformer):
34    def __init__(self, source, *, data, volume=0.5):
35        super().__init__(source, volume)
36
37        self.data = data
38
39        self.title = data.get('title')
40        self.url = data.get('url')
41
42    @classmethod
43    async def from_url(cls, url, *, loop=None, stream=False):
44        loop = loop or asyncio.get_event_loop()
45        data = await loop.run_in_executor(None, lambda: ytdl.extract_info(url, download=not stream))
46
47        if 'entries' in data:
48            # take first item from a playlist
49            data = data['entries'][0]
50
51        filename = data['url'] if stream else ytdl.prepare_filename(data)
52        return cls(discord.FFmpegPCMAudio(filename, **ffmpeg_options), data=data)
53
54
55class Music(commands.Cog):
56    def __init__(self, bot):
57        self.bot = bot
58
59    @commands.command()
60    async def join(self, ctx, *, channel: discord.VoiceChannel):
61        """Joins a voice channel"""
62
63        if ctx.voice_client is not None:
64            return await ctx.voice_client.move_to(channel)
65
66        await channel.connect()
67
68    @commands.command()
69    async def play(self, ctx, *, query):
70        """Plays a file from the local filesystem"""
71
72        source = discord.PCMVolumeTransformer(discord.FFmpegPCMAudio(query))
73        ctx.voice_client.play(source, after=lambda e: print(f'Player error: {e}') if e else None)
74
75        await ctx.send(f'Now playing: {query}')
76
77    @commands.command()
78    async def yt(self, ctx, *, url):
79        """Plays from a url (almost anything youtube_dl supports)"""
80
81        async with ctx.typing():
82            player = await YTDLSource.from_url(url, loop=self.bot.loop)
83            ctx.voice_client.play(player, after=lambda e: print(f'Player error: {e}') if e else None)
84
85        await ctx.send(f'Now playing: {player.title}')
86
87    @commands.command()
88    async def stream(self, ctx, *, url):
89        """Streams from a url (same as yt, but doesn't predownload)"""
90
91        async with ctx.typing():
92            player = await YTDLSource.from_url(url, loop=self.bot.loop, stream=True)
93            ctx.voice_client.play(player, after=lambda e: print(f'Player error: {e}') if e else None)
94
95        await ctx.send(f'Now playing: {player.title}')
96
97    @commands.command()
98    async def volume(self, ctx, volume: int):
99        """Changes the player's volume"""
100
101        if ctx.voice_client is None:
102            return await ctx.send("Not connected to a voice channel.")
103
104        ctx.voice_client.source.volume = volume / 100
105        await ctx.send(f"Changed volume to {volume}%")
106
107    @commands.command()
108    async def stop(self, ctx):
109        """Stops and disconnects the bot from voice"""
110
111        await ctx.voice_client.disconnect()
112
113    @play.before_invoke
114    @yt.before_invoke
115    @stream.before_invoke
116    async def ensure_voice(self, ctx):
117        if ctx.voice_client is None:
118            if ctx.author.voice:
119                await ctx.author.voice.channel.connect()
120            else:
121                await ctx.send("You are not connected to a voice channel.")
122                raise commands.CommandError("Author not connected to a voice channel.")
123        elif ctx.voice_client.is_playing():
124            ctx.voice_client.stop()
125
126bot = commands.Bot(command_prefix=commands.when_mentioned_or("!"),
127                   description='Relatively simple music bot example')
128
129@bot.event
130async def on_ready():
131    print(f'Logged in as {bot.user} (ID: {bot.user.id})')
132    print('------')
133
134bot.add_cog(Music(bot))