feat(avatar): avatar command guildonly property (#1)

* Add new avatar that prints the command users' avatar and roles
* Add `guildOnly` property to stop commands from running in direct
  messages

commands/avatar.js

@@ -0,0 +1,29 @@
+const { MessageEmbed } = require('discord.js')
+
+module.exports = {
+  name: 'avatar',
+  description: 'Shows your avatar url',
+  aliases: ['av'],
+  args: false,
+  guildOnly: true,
+  execute: function (message, args) {
+    const user = message.author
+    const name = !user.displayName ? user.username : user.displayName
+
+    const avatarEmbed = new MessageEmbed()
+      .setURL(user.displayAvatarURL())
+      .setTitle(name)
+      .setThumbnail(user.displayAvatarURL({ dynamic: true, size: 128 }))
+
+    if (message.guild.available) {
+      avatarEmbed
+        .addField('Roles',
+          message.guild.member(user).roles.cache
+            .mapValues(role => role.name)
+            .reduce((acc, role) => acc + '\n' + role)
+        )
+    }
+
+    message.reply(avatarEmbed)
+  }
+}

index.js

@@ -1,7 +1,7 @@
 const http = require('http')
 const fs = require('fs')
 const Discord = require('discord.js')
-const { prefix, token } = require('./config.js')
+const { prefix, token, listenServer } = require('./config.js')
 const { salutations } = require('./commands/phrases.json')
 
 const client = new Discord.Client()
@@ -28,9 +28,9 @@ client.on('message', message => {
   const commandName = args.shift().toLowerCase()
 
   const command = client.commands.get(commandName) ||
-		client.commands.find(cmd => {
-		  return cmd.aliases && cmd.aliases.includes(commandName)
-		})
+    client.commands.find(cmd => {
+      return cmd.aliases && cmd.aliases.includes(commandName)
+    })
 
   if (!command) return
 
@@ -63,6 +63,10 @@ client.on('message', message => {
   timestamps.set(message.author.id, now)
   setTimeout(() => timestamps.delete(message.author.id), cooldownAmount)
 
+  if (command.guildOnly && message.channel.type === 'dm') {
+    return message.reply('I can\'t execute that command inside DMs!')
+  }
+
   try {
     command.execute(message, args)
   } catch (error) {
@@ -75,7 +79,7 @@ client.login(token)
   .catch((error) => {
     if (error.code === 'TOKEN_INVALID') {
       console.error('Discord token is not acceptable. Please set config.json or DISCORD_TOKEN appropiately.')
-    } else	{
+    } else {
       throw error
     }
   })
@@ -84,10 +88,12 @@ function randomFrom (anArray) {
   return anArray[Math.floor(Math.random() * anArray.length)]
 }
 
-http.createServer(
-  function (request, response) {
-    const content = randomFrom(salutations)
-    response.writeHead(200)
-    response.end(content, 'utf-8')
-  }
-).listen(process.env.PORT || 443)
+if (listenServer) {
+  http.createServer(
+    function (request, response) {
+      const content = randomFrom(salutations)
+      response.writeHead(200)
+      response.end(content, 'utf-8')
+    }
+  ).listen(process.env.PORT || 443)
+}