feat: require that users link their discord to apply to certain vacancies

Signed-off-by: miguel456 <me@nogueira.codes>

app/Services/ApplicationService.php

@@ -3,6 +3,7 @@
 
 namespace App\Services;
 
+use App\Exceptions\DiscordAccountRequiredException;
 use App\Notifications\ApplicationConfirmed;
 use ContextAwareValidator;
 use App\Application;
@@ -22,12 +23,18 @@ use Illuminate\Support\Facades\Log;
 
 class ApplicationService
 {
+    /**
+     * @throws DiscordAccountRequiredException
+     */
     public function renderForm($vacancySlug)
     {
         $vacancyWithForm = Vacancy::with('forms')->where('vacancySlug', $vacancySlug)->get();
-
         $firstVacancy = $vacancyWithForm->first();
 
+        if ($firstVacancy->requiresDiscord && !Auth::user()->hasDiscordConnection()) {
+            throw new DiscordAccountRequiredException('A discord account is required beyond this point.');
+        }
+
         if (!$vacancyWithForm->isEmpty() && $firstVacancy->vacancyCount !== 0 && $firstVacancy->vacancyStatus == 'OPEN') {
             return view('dashboard.application-rendering.apply')
                 ->with([