const ytdl = require('ytdl-core');

async function play(bot, ops, data){

  bot.channels.get(data.queue[0].message_channel).send(`Now Playing ${data.queue[0].songTitle} requested by ${data.queue[0].requester}}`)

  data.dispatcher = await data.connection.playStream(ytdl(data.queue[0].song, { filter: 'audioonly' }));

  data.dispatcher.guildID = data.guildID;

  data.dispatcher.once('end', function(){

    finish(bot, ops, this);

  })
}
function finish(bot, ops, dispatcher){

  let fetched = ops.queue.get(dispatcher.guildID);

  fetched.queue.shift();

  if(fetched.queue.length > 0){

    ops.queue.set(dispatcher.guildID, fetched)

    play(bot, ops, fetched)

  }
  else {

    ops.queue.delete(dispatcher.guildID);

    let vc = bot.guilds.get(dispatcher.guildID).me.voiceChannel;

    if (vc) {vc.leave()}


  }

}

module.exports.run = async (bot, message, args, ops) => {

  try {

    if(!message.member.voiceChannel){return(message.channel.send('ERROR: You need to be connected to a voice channel!'));}

    if(!args[0]){return(message.channel.send('ERROR Please Enter a song/video you want to play.'));}

    let validate = await ytdl.validateURL(args[0]);

    if(!validate){

      let commandFile = require('./search.js')
      return(commandFile.run(bot,message,args,ops))

    }

    let info = await ytdl.getInfo(args[0])

    let data = ops.queue.get(message.guild.id) || {};

    if(!data.connection){data.connection = await message.member.voiceChannel.join();}

    if(!data.queue){data.queue = []}

    data.guildID = message.guild.id;

    data.queue.push({

      songTitle: info.title,
      requester: message.author.tag,
      song: args[0],
      message_channel: message.channel.id

    });

    if(!data.dispatcher){

      play(bot, ops, data)

      message.guild.me.setMute(false).catch(() => {});
      message.guild.me.setDeaf(true).catch(() => {});
    }
    else{

      message.channel.send(`Added to queue: ${info.title}`)

    }

    ops.queue.set(message.guild.id, data)

  }
  catch (err) {

    console.log(err);
    return(message.channel.send('ERROR: AN unexpected error has occured please contact a developer'))

  }

}

module.exports.help = {

  name: "play",
  description: "Usage: Plays Music. Command: <prefix>play <URL or Search Query>"

}