const Discord = require("discord.js");
const client = new Discord.Client();

const hexId = '198106489917931520';

client.on("ready", () => {
  console.log("I am ready!");
});

client.on("message", (message) => {
    /* Don't reply if the sender is a bot. */
    if (message.author.bot) {
        return;
    }

    /* Get whether or not the message mentions Hex. null if false, hex's id if true. */
    const foundHexKey = message.mentions.members.findKey((value) => {
        return (value.id === hexId);
    });
    const mentionsHex = (foundHexKey  === hexId);

    /* Check if the message mentions hex. */
    if (mentionsHex) {
        message.channel.send('You cannot just ping the admin!');
    }
});