More Fixes

- Playlists can be saved (will be server specific in the future)
- Saved playlists can be played with ~play

bot.js

@@ -1,38 +1,72 @@
 const Discord = require("discord.js"),
+    fs = require('fs'),
     logger = require('./lib/logging').getLogger(),
-    music = require('./lib/music');
+    music = require('./lib/music'),
     cmd = require("./lib/cmd"),
     client = new Discord.Client(),
     args = require('args-parser')(process.argv),
-    authToken = args.token,
-    prefix = '~';
+    authToken = args.token;
+
+let savedplaylists = {};
 
 function main() {
     music.setLogger(logger);
     cmd.setLogger(logger);
     cmd.init();
+    if (fs.existsSync('./data/savedplaylists.json')) {
+        savedplaylists = JSON.parse(fs.readFileSync('./data/savedplaylists.json'))
+    }
     registerCommands();
     client.login(authToken).then(()=> {
         logger.debug("Logged in");
     });
 }
 
+function savePlaylist(url, name) {
+    savedplaylists[name] = url;
+    fs.writeFile('./data/savedplaylists.json',JSON.stringify(savedplaylists), (err) => {
+        if (err) logger.warn(JSON.stringify(err));
+    })
+}
+
 function registerCommands() {
     cmd.createCommand('~', 'play', (msg, argv) => {
-        let gid = msg.guild.id;
+        let vc = msg.member.voiceChannel;
         let url = argv['url'];
         if (!url) return 'No url given.';
+        if (!url.match(/http/g)) {
+            if (savedplaylists[url]) {
+                url = savedplaylists[url];
+            }
+        }
         try {
-            return music.play(gid, url);
+            return music.play(vc, url);
         } catch(err) {
             logger.error(err);
             msg.reply(`${JSON.stringify(err)}`);
         }
-    }, ['url']);
+    }, ['url'], "Adds the url to the YouTube video/playlist into the queue.");
+
+    cmd.createCommand('~', 'playnext', (msg, argv) => {
+        let vc = msg.member.voiceChannel;
+        let url = argv['url'];
+        if (!url) return 'No url given.';
+        if (!url.match(/http/g)) {
+            if (savedplaylists[url]) {
+                url = savedplaylists[url];
+            }
+        }
+        try {
+            return music.playnext(vc, url);
+        } catch(err) {
+            logger.error(err);
+            msg.reply(`${JSON.stringify(err)}`);
+        }
+    }, ['url'], "Plays the YouTube video after the currently playing song.");
 
     cmd.createCommand('~', 'ping', () => {
        return 'Pong!';
-    });
+    }, [], "Try it yourself.");
 
     cmd.createCommand('~', 'join', (msg) => {
         if (msg.member.voiceChannel) {
@@ -41,54 +75,66 @@ function registerCommands() {
         else {
             msg.reply("You are not connected to a voicechannel.");
         }
-    });
+    }, [], "Joins the VC you are in.");
 
     cmd.createCommand('~', 'stop', (msg) => {
         let gid = msg.guild.id;
         music.stop(gid);
-    });
+    }, [], "Stops playling music and leavs.");
 
     cmd.createCommand('~', 'pause', (msg) => {
         let gid = msg.guild.id;
         music.pause(gid);
-    });
+    }, [], "Pauses playing.");
 
     cmd.createCommand('~', 'resume', (msg) => {
         let gid = msg.guild.id;
         music.resume(gid);
-    });
+    }, [], "Resumes playing.");
 
     cmd.createCommand('~', 'skip', (msg) => {
         let gid = msg.guild.id;
         music.skip(gid);
-    });
+    }, [], "Skips the current song.");
 
-    cmd.createCommand('~', 'plist', (msg) => {
+    cmd.createCommand('~', 'clear', (msg) => {
+        let gid = msg.guild.id;
+        music.clearQueue(gid);
+        return "All songs have been deleted, commander :no_mouth:  "
+    }, [],"Clears the playlist.");
+
+    cmd.createCommand('~', 'playlist', (msg) => {
         let gid = msg.guild.id;
         let songs = music.getQueue(gid);
         logger.debug(`found ${songs.length} songs`);
-        let songlist = "**Songs**\n";
+        let songlist = `**${songs.length} Songs in playlist**\n`;
         for (let i = 0; i < songs.length; i++) {
             if (i > 10) break;
             songlist += songs[i] + '\n';
         }
         return songlist;
-    });
+    }, [], "Shows the next ten songs.");
 
     cmd.createCommand('~', 'shuffle', (msg) => {
         let gid = msg.guild.id;
         music.shuffle(gid);
-    });
+        return "The queue has successfully been shuffled :slight_smile:"
+    }, [], "Shuffles the playlist.");
 
     cmd.createCommand('~', 'current', (msg) => {
         let gid = msg.guild.id;
         let song = music.nowPlaying(gid);
         return `Playing: ${song.title}\n ${song.url}`;
-    });
+    }, [], "Shows the currently playing song.");
+
+    cmd.createCommand('~', 'repeatafterme', (msg, argv) => {
+        return argv['word'];
+    }, ['word'], "Repeats a single word you say.");
 
-    cmd.createCommand('_', 'repeat', (msg, argv) => {
-        return argv['repeattext'];
-    }, ['repeattext']);
+    cmd.createCommand('~', 'save', (msg, argv) => {
+        savePlaylist(argv['url'], argv['name']);
+        return `Saved song/playlist as ${argv['name']}`
+    }, ['url', 'name'], "Saves the YouTube song/playlist with a specific name. ~play [name] to play the playlist");
 }
 
 // defining the client's handlers

lib/cmd.js

@@ -14,13 +14,14 @@ exports.setLogger = function(newLogger) {
     logger = newLogger;
 };
 
-exports.createCommand = function(prefix, command, call, argv) {
+exports.createCommand = function(prefix, command, call, argv, description) {
     try {
         logger.debug(`Creating command ${command} with prefix ${prefix} and arguments ${argv}`);
         if (!commands[prefix]) commands[prefix] = {}; // create Object commands prefix
         commands[prefix][command] = { // assign the command
-            args: argv || [],    // with arguments
-            callback: call      // and function
+            args: argv || [],
+            callback: call,
+            description: description
         };
         logger.debug(`Created command ${prefix}${command}`);
     } catch (err) {
@@ -80,10 +81,13 @@ exports.init = function() {
         helpstr += "Commands\n---\n";
         Object.keys(commands).forEach((key) => {
            Object.keys(commands[key]).forEach((cmd) => {
-               helpstr += "\n" + key + cmd + " " + JSON.stringify(commands[key][cmd].args) + "\n";
+               helpstr += "\n" + key + cmd + " " + JSON.stringify(commands[key][cmd].args).replace(/"|\[\]/g, '');
+               if (commands[key][cmd].description) {
+                   helpstr += '\t' + commands[key][cmd].description + '\n';
+               }
            });
         });
         helpstr += "```";
         return helpstr;
-    });
+    }, [], "Shows this help.");
 };

lib/datahandler.js

@@ -4,7 +4,7 @@
 let logger = require('winston');
 
 /* Function Definition */
-
+// TODO: Class that handles file-data for a server, functions to get/set data for specific server id
 /**
  * Getting the logger
  * @param {Object} newLogger

lib/music.js

@@ -62,7 +62,7 @@ class DJ {
      * in the queue. For each song the title is saved in the queue too.
      * @param url
      */
-    playYouTube(url) {
+    playYouTube(url, playnext) {
         if (!this.conn) this.connect(this.voiceChannel).then(this.playYouTube(url));
         let plist = url.match(/(?<=\?list=)[\w\-]+/g);
         if (plist) {
@@ -73,7 +73,7 @@ class DJ {
                     this.queue.push({'url': vurl, 'title': null});
                     yttl(vurl.replace(/http(s)?:\/\/(www.)?youtube.com\/watch\?v=/g, ''), (err, title) => {
                         if (err) {
-                            logger.error(err);
+                            logger.debug(JSON.stringify(err));
                         } else {
                             try {
                                 logger.debug(`Found title: ${title} for ${vurl}`);
@@ -81,7 +81,7 @@ class DJ {
                                     return (el.url === vurl);
                                 }).title = title;
                             } catch (error) {
-                                logger.error(JSON.stringify(error));
+                                logger.verbose(JSON.stringify(error));
                             }
                         }
                     });
@@ -109,10 +109,14 @@ class DJ {
             this.playing = true;
         } else {
             logger.debug(`Added ${url} to the queue`);
-            this.queue.push({'url': url, 'title': null});
+            if (playnext) {
+                this.queue.unshift({'url': url, 'title': null});
+            } else {
+                this.queue.push({'url': url, 'title': null});
+            }
             yttl(url.replace(/http(s)?:\/\/(www.)?youtube.com\/watch\?v=/g, ''), (err, title) => {
                 if (err) {
-                    logger.error(err);
+                    logger.debug(JSON.stringify(err));
                 } else {
                     try {
                         logger.debug(`Found title: ${title} for ${url}`);
@@ -120,7 +124,7 @@ class DJ {
                             return (el.url === url);
                         }).title = title;
                     } catch (error) {
-                        console.error(JSON.stringify(error));
+                        console.verbose(JSON.stringify(error));
                     }
                 }
             });
@@ -198,7 +202,6 @@ class DJ {
      */
     get playlist() {
         let songs = [];
-        logger.debug(`Playlist: ${JSON.stringify(this.queue)}`);
         this.queue.forEach((entry) => {
             songs.push(entry.title);
         });
@@ -219,6 +222,13 @@ class DJ {
     shuffle() {
         this.queue = shuffleArray(this.queue);
     }
+
+    /**
+     * Clears the playlist
+     */
+    clear() {
+        this.queue = [];
+    }
 }
 
 /**
@@ -236,8 +246,8 @@ exports.setLogger = function (newLogger) {
 exports.connect = function(voiceChannel) {
     let gid = voiceChannel.guild.id;
     let voiceDJ =  new DJ(voiceChannel);
-    voiceDJ.connect();
     djs[gid] = voiceDJ;
+    return voiceDJ.connect();
 };
 
 /**
@@ -251,11 +261,34 @@ exports.playFile = function(guildId, filename) {
 
 /**
  * Plays a YT Url
- * @param guildId
+ * @param voiceChannel
+ * @param url
+ */
+exports.play = function(voiceChannel, url) {
+    let guildId = voiceChannel.guild.id;
+    if (!djs[guildId]) {
+        this.connect(voiceChannel).then(() => {
+            djs[guildId].playYouTube(url);
+        });
+    } else {
+        djs[guildId].playYouTube(url);
+    }
+};
+
+/**
+ * plays the given url as next song
+ * @param voiceChannel
  * @param url
  */
-exports.play = function(guildId, url) {
-    djs[guildId].playYouTube(url);
+exports.playnext = function(voiceChannel, url) {
+    let guildId = voiceChannel.guild.id;
+    if (!djs[guildId]) {
+        this.connect(voiceChannel).then(() => {
+            djs[guildId].playYouTube(url, true);
+        });
+    } else {
+        djs[guildId].playYouTube(url, true);
+    }
 };
 
 /**
@@ -299,6 +332,14 @@ exports.skip = function(guildId) {
     djs[guildId].skip();
 };
 
+/**
+ * Clears the playlist
+ * @param guildId
+ */
+exports.clearQueue = function(guildId) {
+    djs[guildId].clear();
+};
+
 /**
  * Returns the queue
  * @param guildId