Assign list of roles to new user on join

.env.example

@@ -8,6 +8,9 @@ COMMAND_PREFIX=""
 # Sign up for an API key at the CatAPI website. Used for commands in the Fun category.
 CAT_API_KEY=""
 
+# Assign these roles to members on join
+JOIN_ROLES="ID1,ID2"
+
 # JSON Web Token Configuration
 RASPBERRY_STAFF_URL=""
 RASPBERRY_STAFF_USERNAME=""

src/Bot/init.php

@@ -11,6 +11,7 @@ $dotenv->load();
 $dotenv->required('BOT_AUTH_TOKEN')->notEmpty();
 $dotenv->required('COMMAND_PREFIX')->notEmpty();
 $dotenv->required('CAT_API_KEY')->notEmpty();
+$dotenv->required('JOIN_ROLES')->notEmpty();
 
 define('PROJECT_ROOT', realpath(__DIR__ . '/../../'));
 

src/Core/RaspberryBot.php

@@ -2,8 +2,12 @@
 
 namespace nogueiracodes\RaspberryBot\Core;
 
+use Analog\Analog;
+use Analog\Handler\Mongo;
 use Discord\Discord;
 use Discord\DiscordCommandClient;
+use Discord\Parts\User\Member;
+use Discord\WebSockets\Event;
 use Exception;
 use nogueiracodes\RaspberryBot\Core\Interfaces\Action;
 use nogueiracodes\RaspberryBot\Core\Interfaces\Command;
@@ -128,6 +132,30 @@ class RaspberryBot
         $this->commandClient->on('ready', function()
         {
 
+            $this->commandClient->on(Event::GUILD_MEMBER_ADD, function(Member $member, Discord $discord) {
+                
+                Analog::info('Bot: New member ' . $member->username . '#' . $member->discriminator . ' has joined the current guild.');
+
+                if (isset($_ENV['JOIN_ROLES']) && is_int($_ENV['JOIN_ROLES']))
+                {
+                    $roles = explode(',', $_ENV['JOIN_ROLES']);
+                    foreach($roles as $role)
+                    {
+                        // This approach is prone to errors since calling done() passes error responsibility to us, so if an error escapes any of the callbacks, it causes a fatal error
+                        $member->addRole($role)->done(function ($promise) use ($member){
+
+                            Analog::info('Bot: Successfully added role to ' . $member->id);
+
+                        }, function($rejectedPromise) use ($member) {
+                            
+                            Analog::error('Bot: Rejected role promise, failed to add role to user ' . $member->id . '. Rejection reason: ' . $rejectedPromise->getMessage());
+
+                        });
+                    }
+                }
+
+            });
+            
             $this->commandClient->on('message', function($message)
             {   
                 if (!empty($this->commands) && $this->isCommand($message))