User & Server command

client.on ('message', async (revolution) => {
  if (!revolution.guild || revolution.author.bot) return false;
  var prefix = "!";
  switch (revolution.content.split(' ') [0]){
    case prefix+'server':
      var embed = new Discord.RichEmbed()
      .setColor ("RANDOM")
      .setTitle ("Server information")
      .addField ("Name: ", revolution.guild.name, true)
      .addField ("ID: ", revolution.guild.id, true)
      .addField ("Ownership: ", revolution.guild.owner, true)
      .addField ("Region: ", revolution.guild.region, true)
      .addField ("Members: ", revolution.guild.members.filter (member => !member.user.bot).size, true)
      .addField ("Bots: ", revolution.guild.members.filter (member => member.user.bot).size, true)
      .addField ("Channels: ", revolution.guild.channels.size, true)
      .addField ("Roles: ", revolution.guild.roles.size, true)
      revolution.channel.send (embed);
      break;
    case prefix+'user':
      var user = revolution.guild.member (revolution.mentions.members.first() || revolution.author);
      var embed = new Discord.RichEmbed()
      .setColor ("RANDOM")
      .setTitle ("User information")
      .addField ("Username: ", user.user.username, true)
      .addField ("ID: ", user.user.id, true)
      .addField ("CreatedAt: ", require ('moment')(user.user.createdAt).format("DD/MM/YYYY h:mm a"), true)
      .addField ("JoinedAt: ", require ('moment')(user.joinedAt).format("DD/MM/YYYY h:mm a"), true)
      .addField ("Roles: ", user.roles.filter (r => r.name !== "@everyone").map (m =>"<@&" +m.id+">").join("\n"), true)
      revolution.channel.send (embed);
      break;

  }
});

//By Rashwan || Revolution Codes