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

module.exports = {

    name: 'music',
    description: 'Command fpr music related stuffs.',
    gulidOnly: true,

    execute(client, message, args) {
      const queue = new Map();
      const serverQueue = queue.get(message.guild.id);

      const type = args[0];


      if(type == 'play'){
        const voiceChannel = message.member.voiceChannel;
          if (!voiceChannel) return message.channel.send('You need to be in a voice channel to play music!');
        const permissions = voiceChannel.permissionsFor(message.client.user);
            if (!permissions.has('CONNECT') || !permissions.has('SPEAK')) {
                  return message.channel.send('I am not allwd to do dat hooman :( (Insuffect Permissions)');
            }
            const songInfo = ytdl.getInfo(args[1]);
              const song = {
                  title: songInfo.title,
                  url: songInfo.video_url,
                };

             if (!serverQueue) {
                  // Creating the contract for our queue
                      const queueContruct = {
                          textChannel: message.channel,
                          voiceChannel: voiceChannel,
                          connection: null,
                          songs: [],
                          volume: 5,
                          playing: true,
                        };
                        // Setting the queue using our contract
                          queue.set(message.guild.id, queueContruct);
                        // Pushing the song to our songs array
                          queueContruct.songs.push(song);

                      try {
                        // Here we try to join the voicechat and save our connection into our object.
                          var connection = voiceChannel.join();
                          queueContruct.connection = connection;
                        // Calling the play function to start a song
                            play(message.guild, queueContruct.songs[0]);
                          } catch (err) {
                        // Printing the error message if the bot fails to join the voicechat
                          console.log(err);
                          queue.delete(message.guild.id);
                          return message.channel.send(err);
                          }
                } else {
                 serverQueue.songs.push(song);
                 console.log(serverQueue.songs);
                 return message.channel.send(`${song.title} has been added to the queue!`);
                }
      } else if (type == 'skip') {
        if (!message.member.voiceChannel) return message.channel.send('You have to be in a voice channel to stop the music!');
	      if (!serverQueue) return message.channel.send('There is no song that I could skip!');
      	  serverQueue.connection.dispatcher.end();
      } else if (type == 'stop') {
        if (!message.member.voiceChannel) return message.channel.send('You have to be in a voice channel to stop the music!');
	        serverQueue.songs = [];
	        serverQueue.connection.dispatcher.end();
      }



      function play(guild, song) {
        const serverQueue = queue.get(guild.id);

        if (!song) {
          serverQueue.voiceChannel.leave();
          queue.delete(guild.id);
          return;
        }

        const dispatcher = serverQueue.connection.playStream(ytdl(song.url))
          .on('end', () => {
            console.log('Music ended!');
            serverQueue.songs.shift();
            play(guild, serverQueue.songs[0]);
          })
          .on('error', error => {
            console.error(error);
          });
        dispatcher.setVolumeLogarithmic(serverQueue.volume / 5);
      }

  }
}