Feat: Add ICS generator for disposition dates

src/Service/Common/IcsGenerator.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Service\Common;
+
+use App\Entity\Disposition;
+use Spatie\IcalendarGenerator\Components\Calendar;
+use Spatie\IcalendarGenerator\Components\Event;
+
+class IcsGenerator
+{
+    public function __construct(private readonly Disposition $disposition)
+    {}
+
+    public function generate(): string
+    {
+        $assignment = $this->disposition->getAssignment();
+
+        $calendar = Calendar::create('MyE&P Team');
+
+        $label = sprintf('E&P: Einteilung als %s', $assignment->getJobProfile()->getName());
+        $address = sprintf("%s\n%s", $assignment->getDestination()->getProduct(), $assignment->getDestination()->getHotel());
+
+        $event = Event::create($label)
+            ->startsAt($assignment->getEffectivePeriod()->start)
+            ->endsAt($assignment->getEffectivePeriod()->end->modify('+1 day'))
+            ->address($address)
+            ->description($label)
+        ;
+
+        if (null !== $contact = $assignment->getContact()) {
+            $event->organizer($contact->getEmail(), $contact);
+        }
+
+        $calendar->event($event);
+
+        return $calendar->get();
+    }
+}