Add custom variables to custom message feature

commands/custom.js

@@ -10,7 +10,8 @@ module.exports = {
 	moreHelp: ["<prefix>custom add - Add new custom commands",
 			   "<prefix>custom remove - Delete your custom commands.",
 			   "<prefix>custom owner - check owner of custom command",
-			   "<prefix>custom list - list all custom commands"				
+			   "<prefix>custom list - list all custom commands",
+			   "<prefix>custom variables - list all variables you can use"				
 ],
 	execute({message, args, client}) {
 		const customPath = './data/customCommands.json';
@@ -53,6 +54,9 @@ module.exports = {
 				sendText = embed
 				}else sendText = "NO CUSTOM COMMANDS"
 				break;
+			case "variables":
+				sendText = "The variables you can use are:\n<prefix>\n<globalPrefix>\n<username>\n<nickname>\n<user_id>\n<discriminator>\n<guild_name>\n<guild_id>"
+				break;
 			default:
 				sendText = "Argument not recognized."
 				break;

server/message.js

@@ -27,7 +27,8 @@ module.exports = function(client, owners, message, globalPrefix){
 			let customCommands = JSON.parse(json)
 			customCommands.forEach(function (customCommand) {
 				if (customCommand.customName === commandName) {
-					message.channel.send(customCommand.customMessage)
+					let customMessage = customReplaceWithVariables(customCommand.customMessage, message, prefix, globalPrefix)
+					message.channel.send(customMessage)
 				}
 			});
 		}

util/customReplaceWithVariables.js

@@ -0,0 +1,23 @@
+const getNickname = require('./getNickname')
+
+module.exports = function(customMessage, message, prefix, globalPrefix){
+
+	let user = message.guild.members.cache.get(message.author.id);
+	let nickname = getNickname(user, message.guild)
+	let username = user.user.username
+	let userID = user.user.id
+	let discriminator =  user.user.discriminator
+	let guildName = message.guild.name
+	let guildID = message.guild.id
+
+	let variables = ["<prefix>", "<globalPrefix>", "<username>", "<nickname>", "<user_id>", "<discriminator>", "<guild_name>", "<guild_id>"]
+	let replacer = [prefix, globalPrefix, username, nickname, userID, discriminator, guildName, guildID]
+
+
+	for (let i = 0; i < variables.length; i++){
+		const regex = new RegExp(variables[i], 'g')
+		customMessage = customMessage.replace(regex, replacer[i])
+	}
+
+	return customMessage
+}