add interface for actions

src/Actions/CalculateBelgianHolidaysAction.php → src/Actions/Belgium.php

@@ -5,11 +5,10 @@
 use Carbon\CarbonImmutable;
 use Spatie\Holidays\Data\Holiday;
 
-class CalculateBelgianHolidaysAction
+class Belgium implements Executable
 {
     protected int $year;
 
-    /** @return array<Holiday> */
     public function execute(int $year): array
     {
         $this->year = $year;

src/Actions/Executable.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace Spatie\Holidays\Actions;
+
+use Spatie\Holidays\Data\Holiday;
+
+interface Executable
+{
+    /** @return array<Holiday> */
+    public function execute(int $year): array;
+}

src/Holidays.php

@@ -3,7 +3,7 @@
 namespace Spatie\Holidays;
 
 use Carbon\CarbonImmutable;
-use Spatie\Holidays\Actions\CalculateBelgianHolidaysAction;
+use Spatie\Holidays\Actions\Belgium;
 use Spatie\Holidays\Data\Holiday;
 use Spatie\Holidays\Exceptions\HolidaysException;
 
@@ -45,7 +45,7 @@ public function get(): array
     protected function calculate(): self
     {
         $action = match ($this->countryCode) {
-            'BE' => (new CalculateBelgianHolidaysAction()),
+            'BE' => new Belgium(),
             null => throw HolidaysException::noCountryCode(),
             default => throw HolidaysException::unknownCountryCode($this->countryCode),
         };