import discord
import ffmpeg
import youtube_dl
import _asyncio

from discord.ext import commands

TOKEN = ''

client = commands.Bot(command_prefix='!')

players = {}

@client.event
async def on_ready():
    print('Bot ist Online!')


@client.command(pass_context=True)
async def join(ctx):
    channel = ctx.message.author.voice.channel
    await channel.connect()


@client.command(pass_context=True)
async def leave(ctx):
    await ctx.voice_client.disconnect()

@client.command(pass_context=True)
async def play(ctx, url):
    guild = ctx.message.guild

    source = discord.PCMVolumeTransformer(discord.FFmpegPCMAudio(url))
    ctx.voice_client.play(source, after=lambda e: print('Player error: %s' % e) if e else None)



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
}

ffmpeg_options = {
    'options': '-vn'
}

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)


client.run(TOKEN)