feat(services): add working day determiner factory

app/Services/WorkingDays/WorkingDayDeterminerFactory.php

@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Services\WorkingDays;
+
+use App\Services\WorkingDays\Date\MonToFriWorkingDayDeterminer;
+use App\Services\WorkingDays\PublicHolidays\PublicHolidaysStateFactory;
+use App\Services\WorkingDays\Utils\MultipleWorkingDayDeterminer;
+
+class WorkingDayDeterminerFactory
+{
+    public function __construct(
+        private readonly PublicHolidaysStateFactory $publicHolidaysStateFactory,
+    ) {
+    }
+
+    /**
+     * Create a working day determiner for the given country.
+     * @param string $countryCode
+     * @return WorkingDayDeterminerInterface
+     */
+    public function createForCountry(string $countryCode): WorkingDayDeterminerInterface
+    {
+        return match ($countryCode) {
+            'CZ' => new MultipleWorkingDayDeterminer(
+                [ new MonToFriWorkingDayDeterminer(),  $this->publicHolidaysStateFactory->createDeterminerForCountry($countryCode) ],
+            ),
+            default => throw new \InvalidArgumentException('Unsupported country code'),
+        };
+    }
+}