Merge branch 'main' into states

# Conflicts:
#	app/Domain/CalendarGenerator.php
#	app/Domain/VacationRequestStateManager.php
#	app/Eloquent/Models/VacationRequest.php
#	app/Eloquent/Observers/VacationRequestObserver.php
#	composer.json
#	composer.lock
#	tests/Feature/VacationRequestTest.php

app/Domain/Enums/Month.php

@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain\Enums;
+
+use Carbon\CarbonInterface;
+use Illuminate\Support\Carbon;
+use Illuminate\Support\Str;
+
+enum Month: string
+{
+    case January = "january";
+    case February = "february";
+    case March = "march";
+    case April = "april";
+    case May = "may";
+    case June = "june";
+    case July = "july";
+    case August = "august";
+    case September = "september";
+    case October = "october";
+    case November = "november";
+    case December = "december";
+
+    public function toCarbonNumber(): int
+    {
+        return match ($this) {
+            self::January => CarbonInterface::JANUARY,
+            self::February => CarbonInterface::FEBRUARY,
+            self::March => CarbonInterface::MARCH,
+            self::April => CarbonInterface::APRIL,
+            self::May => CarbonInterface::MAY,
+            self::June => CarbonInterface::JUNE,
+            self::July => CarbonInterface::JULY,
+            self::August => CarbonInterface::AUGUST,
+            self::September => CarbonInterface::SEPTEMBER,
+            self::October => CarbonInterface::OCTOBER,
+            self::November => CarbonInterface::NOVEMBER,
+            self::December => CarbonInterface::DECEMBER,
+        };
+    }
+
+    public static function current(): Month
+    {
+        return Month::from(Str::lower(Carbon::now()->englishMonth));
+    }
+
+    public static function fromNameOrCurrent(string $name): Month
+    {
+        return Month::tryFrom($name) ?? Month::current();
+    }
+}