Ban command

const args = message.content.split(' ').slice(1); // All arguments behind the command name with the prefix
​
const Discord = require('discord.js')

const user = message.mentions.users.first(); // returns the user object if an user mention exists
const banReason = args.slice(1).join(' '); // Reason of the ban (Everything behind the mention)
​
// Check if an user mention exists in this message
if (!user) {
try {
// Check if a valid userID has been entered instead of a Discord user mention
if (!message.guild.members.get(args.slice(0, 1).join(' '))) throw new Error('Couldn\' get a Discord user with this userID!');
// If the client (bot) can get a user with this userID, it overwrites the current user variable to the user object that the client fetched
user = message.guild.members.get(args.slice(0, 1).join(' '));
user = user.user;
} catch (error) {
return message.reply('Couldn\' get a Discord user with this userID!');
}
}
if (user === message.author) return message.channel.send('You can\'t ban yourself'); // Check if the user mention or the entered userID is the message author himsmelf
if (!reason) return message.reply('You forgot to enter a reason for this ban!'); // Check if a reason has been given by the message author
if (!message.guild.member(user).bannable) return message.reply('You can\'t ban this user because you the bot has not sufficient permissions!'); // Check if the user is bannable with the bot's permissions
​
await message.guild.ban(user) // Bans the user
​
const banConfirmationEmbed = new Discord.RichEmbed()
.setColor('RED')
.setDescription(`✅ ${user.tag} has been successfully banned!`);
message.channel.send({
embed: banConfirmationEmbed
}); // Sends a confirmation embed that the user has been successfully banned