Add removal of data when bot kicked from guild

Along with join/leave console messages

discord-bot-core/Client.js

@@ -28,6 +28,8 @@ module.exports = class Client extends Discord.Client {
 		this.on("ready", this.onReady);
 		this.on("message", this.onMessage);
 		this.on("debug", this.onDebug);
+		this.on("guildCreate", this.onGuildCreate);
+		this.on("guildDelete", this.onGuildDelete);
 		process.on("uncaughtException", err => this.onUnhandledException(this, err));
 	}
 
@@ -48,7 +50,7 @@ module.exports = class Client extends Discord.Client {
 
 	onMessage(message) {
 		if (message.channel.type === "text" && message.member) {
-			if(!this.guildsData[message.guild.id])
+			if (!this.guildsData[message.guild.id])
 				this.guildsData[message.guild.id] = new this.guildDataModel({ id: message.guild.id });
 			HandleMessage(this, message, this.commands, this.guildsData[message.guild.id]);
 		}
@@ -59,6 +61,16 @@ module.exports = class Client extends Discord.Client {
 			CoreUtil.dateDebug(info);
 	}
 
+	onGuildCreate(guild) {
+		CoreUtil.dateLog(`Added to guild ${guild.name}`);
+	}
+
+	onGuildDelete(guild) {
+		CoreUtil.dateLog(`Removed from guild ${guild.name}, removing data for this guild`);
+		delete this.guildsData[guild.id];
+		this.writeFile();
+	}
+
 	onUnhandledException(client, err) {
 		CoreUtil.dateError(err.message || err);
 		CoreUtil.dateLog("Destroying existing client...");

discord-bot-core/Util.js

@@ -28,19 +28,19 @@ function ask(client, textChannel, member, question) {
 }
 
 function dateLog(...args) {
-	doDateLog(Console.log, logWriter, args);
+	doDateLog(Console.log, logWriter, args, "INFO");
 }
 
 function dateError(...args) {
-	doDateLog(Console.error, logWriter, args);
+	doDateLog(Console.error, logWriter, args, "ERROR");
 }
 
 function dateDebug(...args) {
-	doDateLog(null, null, args);
+	doDateLog(null, null, args, "DEBUG");
 }
 
-function doDateLog(consoleMethod, fileWriter, args) {
-	args = formatArgs(args);
+function doDateLog(consoleMethod, fileWriter, args, prefix = "") {
+	args = formatArgs([`[${prefix}]`].concat(args));
 
 	if (consoleMethod !== null)
 		consoleMethod.apply(this, args);
@@ -52,7 +52,7 @@ function doDateLog(consoleMethod, fileWriter, args) {
 }
 
 function formatArgs(args) {
-	return ["[", new Date().toUTCString(), "] "].concat(args);
+	return [`[${new Date().toUTCString()}]`].concat(args);
 }
 
 function formatArgsForFile(args) {