//index.js
let client = {
    config: require("./config.json"),
    getYouTubeID: require('get-youtube-id'),
    fetchYoutubeInfo: require('youtube-info'),
    ytdl: require('ytdl-core'),
    queue: [],
    isPlaying: false,
    dispatcher: null,
    voiceChannel: null,
    skipReq: 0,
    skippers: {},
    playMusic: async function (id, message) {
        message.member.voiceChannel.join().then(function (connection) {
            stream = client.ytdl("https://www.youtube.com/watch?v=" + id, {
                filter: 'audioonly'
            });
            client.skipReq = 0;
            client.skippers = [];

            dispatcher = connection.playStream(stream);
        });
    },
    getID: async function (str, cb) {
        if (client.isYoutube(str)) {
            cb(client.getYouTubeID(str));
        } else {
            client.search_video(str, function (id) {
                cb(id);
            });
        }
    },
    add_to_queue: async function (strID) {
        if (client.isYoutube(strID)) {
            client.queue.push(client.getID(client.getYouTubeID(strID)));
        } else {
            client.queue.push(strID);
        }
    },
    search_video: async function (query, callback) {
        request("https://www.googleapis.com/youtube/v3/search?part=id&type=video&q=" + encodeURIComponent(query) + "&key=" + client.config.yt_api_key, function(error, response, body) {
            var json = JSON.parse(body);
                callback(jsonf.items[0].id.videoId);
        });
    },
    isYoutube: async function (str) {
        return str.toLowerCase().indexOf('youtube.com') > -1;
    }
}

//play commnd

if (client.queue.length > 0 || client.isPlaying) {
                client.getID(args, function (id) {
                    client.add_to_queue(id);
                    client.fetchYoutubeInfo(id, function (err, videoInfo) {
                        if (err) throw new Error(err);
                        message.channel.send(`**${videoInfo.title}** has been added to queue!`);
                    });
                });
            } else {
                client.isPlaying = true;
                client.getID(args, function (id) {
                    client.queue.push('placeholder');
                    client.playMusic(id, message);
                    client.fetchYoutubeInfo(id, function (err, videoInfo) {
                        if (err) throw new Error(err);
                        message.channel.send(`Now playing **${videoInfo.title}**`);
                    });
                });
            }