Same as welcome but for people who leave

commands/admin/bye.js

@@ -0,0 +1,39 @@
+const { Command } = require('discord-akairo');
+const fs = require('fs');
+
+class byeCommand extends Command {
+	constructor() {
+		super('bye', {
+			aliases: ['bye'],
+			category: 'admin',
+			channelRestriction: 'guild',
+			userPermissions: ['MANAGE_CHANNELS'],
+			args: [
+				{
+					id: 'message',
+					type: 'string',
+					match: 'rest'
+				}
+			],
+			description: {
+				content: 'Set bye message when user leave/get kicked, can use [member] to get the name of the user joining and [server] to get the name of the server',
+				usage: '[bye message]',
+				examples: ['everyone bye [adjectives] [member] and bye on [server]']
+			}
+		});
+	}
+
+	async exec(message, args) {
+		let byeChannel = message.channel.id;
+
+		fs.writeFile(`./bye/${message.guild.id}.json`, `{"channel": "${byeChannel}", "message": "${args.message}"}`, function (err) {
+			if (err) {
+				console.log(err);
+			}
+		});
+		
+		return message.channel.send(`This channel will now be used to send message when user leave with the following message: ${args.message}`);
+	}
+}
+
+module.exports = byeCommand;

commands/admin/unbye.js

@@ -0,0 +1,31 @@
+const { Command } = require('discord-akairo');
+const fs = require('fs');
+
+class unbyeCommand extends Command {
+	constructor() {
+		super('unbye', {
+			aliases: ['unbye'],
+			category: 'admin',
+			channelRestriction: 'guild',
+			userPermissions: ['MANAGE_CHANNELS'],
+			description: {
+				content: 'Delete leaving message',
+				usage: '[]',
+				examples: ['']
+			}
+		});
+	}
+
+	async exec(message) {
+		fs.unlink(`./bye/${message.guild.id}.json`, (err) => {
+			if (err) {
+				console.error(err);
+				return message.channel.send('An error has occured, there is most likely no bye/leave message set!');
+			} else {
+				return message.channel.send('Disabled bye/leave message');
+			}
+		});
+	}
+}
+
+module.exports = unbyeCommand;

event/listeners/guildMemberRemove.js

@@ -0,0 +1,45 @@
+const { Listener } = require('discord-akairo');
+const reload = require('auto-reload');
+const rand = require('../../rand.js');
+
+class guildMemberRemoveListener extends Listener {
+	constructor() {
+		super('guildMemberRemove', {
+			emitter: 'client',
+			event: 'guildMemberRemove'
+		});
+	}
+
+	async exec(guild) {
+		let bye = reload(`../../bye/${guild.guild.id}.json`);
+
+		const channel = this.client.channels.get(bye['channel']);
+
+		let byeMessage = bye['message'];
+
+		byeMessage = byeMessage.replace(/\[member\]/, guild.user.username);
+		byeMessage = byeMessage.replace(/\[server\]/, guild.guild.name);
+
+		let attach;
+		if (byeMessage.includes('[attach:')) {
+			attach = byeMessage.split(/(\[attach:.*?])/);
+			for (let i = 0, l = attach.length; i < l; i++) {
+				if (attach[i].includes('[attach:')) {
+					attach = attach[i].replace('[attach:', '').slice(0, -1);
+					i = attach.length;
+				}
+			}
+			byeMessage = byeMessage.replace(/(\[attach:.*?])/, '');
+		}
+
+		byeMessage = rand.random(byeMessage);	
+
+
+		if (attach) {
+			return channel.send(byeMessage, {files: [attach]});
+		} else {
+			return channel.send(byeMessage);
+		}
+	}
+}
+module.exports = guildMemberRemoveListener;