Discord.js - User-info Command

let user;
if (message.mentions.users.first()) {
    user = message.mentions.users.first();
} else {
    user = message.author;
}

const member = message.guild.member(user);

const embed = new Discord.RichEmbed()
    .setColor("RANDOM")
    .setThumbnail(message.author.avatarURL)
    .addField(`${user.tag}`, `${user}`, true)
    .addField("ID:", `${user.id}`, true)
    .addField("Nickname:", `${member.nickname !== null ? `${member.nickname}` : 'None'}`, true)
    .addField("Status:", `${user.presence.status}`, true)
    .addField("In Server", message.guild.name, true)
    .addField("Game:", `${user.presence.game ? user.presence.game.name : 'None'}`, true)
    .addField("Bot:", `${user.bot}`, true)
    .addField("Joined The Server On:", `${moment.utc(member.joinedAt).format("dddd, MMMM Do YYYY")}`, true)
    .addField("Account Created On:", `${moment.utc(user.createdAt).format("dddd, MMMM Do YYYY")}`, true)
    .addField("Roles:", member.roles.map(roles => `${roles}`).join(', '), true)
    .setFooter(`Replying to ${message.author.username}#${message.author.discriminator}`)
message.channel.send({embed});