Fix improperly named mailgun environment variable, closes pterodactyl#942

Author: DaneEveritt

app/Console/Commands/Environment/EmailSettingsCommand.php

@@ -126,7 +126,7 @@ private function setupMailgunDriverVariables()
             trans('command/messages.environment.mail.ask_mailgun_domain'), $this->config->get('services.mailgun.domain')
         );
 
-        $this->variables['MAILGUN_KEY'] = $this->option('password') ?? $this->ask(
+        $this->variables['MAILGUN_SECRET'] = $this->option('password') ?? $this->ask(
             trans('command/messages.environment.mail.ask_mailgun_secret'), $this->config->get('services.mailgun.secret')
         );
     }

tests/Unit/Commands/Environment/EmailSettingsCommandTest.php

@@ -126,7 +126,7 @@ public function testMailgunDriverSelection()
         $data = [
             'MAIL_DRIVER' => 'mailgun',
             'MAILGUN_DOMAIN' => 'domain.com',
-            'MAILGUN_KEY' => '123456',
+            'MAILGUN_SECRET' => '123456',
             'MAIL_FROM' => 'mail@from.com',
             'MAIL_FROM_NAME' => 'MailName',
             'MAIL_ENCRYPTION' => 'tls',
@@ -147,7 +147,7 @@ public function testMailgunDriverSelectionWithOptionsPassed()
         $data = [
             'MAIL_DRIVER' => 'mailgun',
             'MAILGUN_DOMAIN' => 'domain.com',
-            'MAILGUN_KEY' => '123456',
+            'MAILGUN_SECRET' => '123456',
             'MAIL_FROM' => 'mail@from.com',
             'MAIL_FROM_NAME' => 'MailName',
             'MAIL_ENCRYPTION' => 'tls',
@@ -160,7 +160,7 @@ public function testMailgunDriverSelectionWithOptionsPassed()
             '--from' => $data['MAIL_FROM_NAME'],
             '--encryption' => $data['MAIL_ENCRYPTION'],
             '--host' => $data['MAILGUN_DOMAIN'],
-            '--password' => $data['MAILGUN_KEY'],
+            '--password' => $data['MAILGUN_SECRET'],
         ]);
 
         $this->assertNotEmpty($display);