const Discord = require('discord.js');
const client = new Discord.Client();

const fs = require('fs');
const ytdl = require('ytdl-core');
var Player;
var playlist = [];
var playing = false;
var channel;
var chatchannel;
var PlaylistMax = 50;
var request = require("request");
var guild;


function JsonRequest(url,callback){
    console.log(url);
    var data = request({url: url,json: true}, function (error, response, body) {
        //console.log(body);
        callback(body);
    });
}

function AddPlaylistSongs(url,message){
    json = JsonRequest(url,function(body){
        if(body['items'] != undefined || body['items'] != null){
            var NextPageToken = body['nextPageToken'];
            var count = 0;
            body['items'].forEach(function(item,index){
                var videourl = 'https://www.youtube.com/watch?v='+item['snippet']['resourceId']['videoId'];
                ytdl.getInfo(videourl, 'info',function(err,info){
                    //console.log(info);
                    AddSong(videourl,info['title'],info['author']['name'],info['length_seconds']);

                });


            });
            message.channel.sendMessage(body['items'].length +' songs has been added to the queue.');
        }


    });

}



var prefix = '!'; var commands = [];
var VC;


client.on('ready', () => {
  console.log('I am ready!');

  AddCommand('ping',function(message){
      msgArray = message.content.split(' ');
      message.channel.sendMessage("pong "+ client.ping + ' ms' +" "+ msgArray.slice(1).join(' '));
  });
  AddCommand('skip',function(message){
      Skip();
  });
  AddCommand('help',function(message){
      message.channel.sendMessage("`");
  });
  AddCommand('join',function(message){
      var author = message.author;
      message.guild.channels.findAll('type','voice').forEach(function(item,index){
          item['members'].array().forEach(function(gmember,index){
              if(gmember['user'] === author){
                  VC = item.join();
                  message.channel.sendMessage("Joining "+item['name']+"...");

              }
          });

      });

  });
  AddCommand('play',function(message){
        msgArray = message.content.split(' ');
        console.log(msgArray.length);
        if(msgArray.length >= 2){
            var author = message.author;
              message.guild.channels.findAll('type','voice').forEach(function(item,index){
                  item['members'].array().forEach(function(gmember,index){
                      if(gmember['user'] === author){
                                chatchannel = message.channel;
                                channel = item;
                                guild = message.guild;

                                ytdl.getInfo(msgArray[1], 'info',function(err,info){
                                    if(info == null){//Im a playlist!!
                                        var playlistId = msgArray[1].split('=')[1];
                                        AddPlaylistSongs('https://www.googleapis.com/youtube/v3/playlistItems?part=snippet%2CcontentDetails&maxResults='+PlaylistMax+'&pageToken=&playlistId='+playlistId+'&key=',message);
                                    }else{
                                        console.log(info['length_seconds']+" Time");
                                        AddSong(msgArray[1],info['title'],info['author']['name'],info['length_seconds']);
                                    }

                                });


                      }
                  });

             });
        }else{
            message.channel.sendMessage("Please provide a url.");
        }
  });

});

function AddSong(url,title,name,length){
    playlist.push(new Song(url,title,name,length));
    console.log(playlist);
    if(!playing){

        Player = Play();
    }
}

function Skip(){
    console.log("Skipped")
    dispatcher.end();


}
function End(){
    console.log("Ended")
    playing = false;
    playlist = playlist.splice(1);
    Play();
}

 function Play(){
    if(!playing && playlist.length > 0){
           var voiceConnection = guild.voiceConnection;
           if(voiceConnection){
               const stream = ytdl(playlist[0].url, { filter : 'audioonly' });
               playing = true;

               dispatcher = voiceConnection.playStream(stream);
               dispatcher.on('end', (reason) => {
                  console.log('reason: '+ reason);
                  End();
                });

               chatchannel.send("Playing " + playlist[0].name + " | " + playlist[0].author);
               console.log("Playing " + playlist[0].name + " | " + playlist[0].author + " Length: " + playlist[0].length);
           }else{
               channel.join().then(Play);
           }
    }
}

client.on('message', message => {
    content = message.content + ' ';
    msgArray = message.content.split(' ');
    commands.forEach(function(item,index){
        if (message.content.startsWith(item.command)) {
            item.method(message);
        }

    });


});
function AddCommand(command,method){
    commands.push(new Command(prefix + command,method));
}
function Command(command,method){
    this.method = method;
    this.command = command;
}

function Song(url,name,author,length){
    this.url = url;
    this.name = name;
    this.author = author;
    this.length = length;
}


client.login('tokenID');