Added Demo mode

Demo mode allows to safely run a demo version of the app, with destructive features limited.

Some bugs were also fixed in this commit.

app/Services/ApplicationService.php

@@ -47,7 +47,7 @@ class ApplicationService
      * @throws VacancyNotFoundException Thrown when the associated vacancy is not found
      * @throws IncompleteApplicationException Thrown when there are missing fields
      */
-    public function fillForm(Authenticatable $applicant, array $formData, $vacancySlug): bool
+    public function fillForm(User $applicant, array $formData, $vacancySlug): bool
     {
         $vacancy = Vacancy::with('forms')->where('vacancySlug', $vacancySlug)->get();
 

app/Services/AppointmentService.php

@@ -56,12 +56,7 @@ class AppointmentService
      */
     public function updateAppointment(Application $application, $status, $updateApplication = true)
     {
-        $validStatuses = [
-            'SCHEDULED',
-            'CONCLUDED',
-        ];
-
-        if ($status == 'SCHEDULED' || $status == 'CONCLUDED')
+        if ($status == 'SCHEDULED' || $status == 'concluded')
         {
             $application->appointment->appointmentStatus = strtoupper($status);
             $application->appointment->save();

app/Services/DemoService.php

@@ -0,0 +1,11 @@
+<?php
+namespace App\Services;
+
+class DemoService {
+
+    public function isDemoEnabled(): bool {
+
+        return config('demo.is_enabled');
+
+    }
+}

app/Services/SecuritySettingsService.php

@@ -43,7 +43,7 @@ class SecuritySettingsService
         }
 
         Options::changeOption('graceperiod', $options['graceperiod']);
-        Options::changeOption('password_expiry', $options['pwexpiry']);
+        Options::changeOption('password_expiry', $options['pwExpiry']);
         Options::changeOption('force2fa', $options['enforce2fa']);
         Options::changeOption('requireGameLicense', $options['requirePMC']);