Handling ICAL import

app/Domains/Event/Actions/GenerateIcalForDeadline/GenerateIcalForDeadlineCommand.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace App\Domains\Event\Actions\GenerateIcalForDeadline;
+
+class GenerateIcalForDeadlineCommand {
+    public function __construct(public GenerateIcalForDeadlineRequest $request)
+    {
+    }
+    public function execute(): GenerateIcalForDeadlineResponse
+    {
+        $event = $this->request->event;
+
+        $deadlineDate = $event->registration_final_end->copy()->subDays(2);
+        $dtDate = $deadlineDate->format('Ymd');
+        $now = now()->format('Ymd\THis\Z');
+        $summary = $this->escapeIcal('Zahlungsfrist: ' . $event->name);
+        $description = $this->escapeIcal(
+            'Bitte überweise den Teilnahmebeitrag für "' . $event->name . '" bis zu diesem Datum.'
+        );
+
+        $icalContent = implode("\r\n", [
+                'BEGIN:VCALENDAR',
+                'VERSION:2.0',
+                'PRODID:-//' . app('tenant')->name . '//Veranstaltungskalender//DE',
+                'CALSCALE:GREGORIAN',
+                'METHOD:PUBLISH',
+                'BEGIN:VEVENT',
+                'UID:payment-deadline-' . $event->identifier . '@' . app('tenant')->slug,
+                'DTSTAMP:' . $now,
+                'DTSTART;VALUE=DATE:' . $dtDate,
+                'DTEND;VALUE=DATE:' . $dtDate,
+                'SUMMARY:' . $summary,
+                'DESCRIPTION:' . $description,
+                'END:VEVENT',
+                'END:VCALENDAR',
+            ]) . "\r\n";
+
+        $filename = 'zahlungsziel-' . $event->name . '.ics';
+
+        return new GenerateIcalForDeadlineResponse($icalContent, $filename);
+    }
+
+    private function escapeIcal(string $value): string
+    {
+        return str_replace(
+            ['\\', ';', ',', "\n"],
+            ['\\\\', '\\;', '\\,', '\\n'],
+            $value
+        );
+    }
+}