Disable Prayer Day in Denmark starting from 2024

src/Cmixin/BusinessDay/Calculator/CalculatorBase.php

@@ -147,23 +147,25 @@ protected function consumeHolidayString($pattern, &$holiday, &$match = null)
 
     protected function isIgnoredYear(&$holiday)
     {
-        $since = 0;
+        $mode = 'since';
+        $cap = 0;
         $every = 0;
 
         if ($this->consumeHolidayString('/ of (even|odd|leap|non-leap) years?$/i', $holiday, $match)) {
             if (substr($match[1], -4) === 'leap') {
                 return (!($this->year % 4) && ($this->year % 100 || !($this->year % 400))) !== ($match[1] === 'leap');
             }
 
-            $since = $match[1] === 'even' ? 0 : 1;
+            $cap = $match[1] === 'even' ? 0 : 1;
             $every = 2;
         }
 
-        if ($this->consumeHolidayString('/ every (\d+) years since (\d{4})$/', $holiday, $match)) {
-            $since = $match[2];
+        if ($this->consumeHolidayString('/ every (\d+) years (since|until) (\d{4})$/', $holiday, $match)) {
+            $mode = $match[2];
+            $cap = $match[3];
             $every = $match[1];
         }
 
-        return $every && ($delta = $this->year - $since) >= 0 && $delta % $every;
+        return $every && ($delta = ($mode === 'since' ? 1 : -1) * ($this->year - $cap)) >= 0 && $delta % $every;
     }
 }

src/Cmixin/BusinessDay/Calculator/HolidayCalculator.php

@@ -183,8 +183,10 @@ protected function getKeywordReplacements(): array
             $equinox                                       => [$this, 'interpolateEquinox'],
             '/(easter|orthodox)/i'                         => [$this, 'interpolateFixedDate'],
             '/\D-\d+\s*$/'                                 => '$0 days',
+            '/(\D-\d+)\s+if/'                              => '$1 days if',
             '/^(\d{1,2})-(\d{1,2})((\s[\s\S]*)?)$/'        => [$this, 'padDate'],
             '/(\s\d+)\s*$/'                                => '$1 days',
+            '/(\s\d+)\s+if/'                               => '$1 days if',
         ];
     }
 

src/Cmixin/Holidays/dk-national.php

@@ -7,7 +7,7 @@
     'easter-2'           => '= easter -2',
     'easter'             => '= easter',
     'easter-p1'          => '= easter 1',
-    'easter-26'          => '= easter 26',
+    'easter-26'          => '= easter 26 if year <= 2023',
     'easter-39'          => '= easter 39',
     '2nd-sunday-of-may'  => '= second Sunday of May',
     '06-05'              => '06-05',

tests/Cmixin/Holidays/DkTest.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Tests\Cmixin\Holidays;
+
+use Cmixin\BusinessDay;
+use PHPUnit\Framework\TestCase;
+
+class DkTest extends TestCase
+{
+    const CARBON_CLASS = 'Carbon\Carbon';
+
+    protected function setUp(): void
+    {
+        BusinessDay::enable(static::CARBON_CLASS);
+        $carbon = static::CARBON_CLASS;
+        $carbon::resetHolidays();
+    }
+
+    public function testHolidays(): void
+    {
+        $carbon = static::CARBON_CLASS;
+        $carbon::resetHolidays();
+        $carbon::setHolidaysRegion('dk-national');
+
+        self::assertTrue($carbon::parse('2023-05-05')->isHoliday());
+        self::assertSame('easter-26', $carbon::parse('2023-05-05')->getHolidayId());
+        self::assertSame('Prayer Day', $carbon::parse('2023-05-05')->getHolidayName());
+        self::assertSame('Store Bededag', $carbon::parse('2023-05-05')->getHolidayName('da'));
+        self::assertFalse($carbon::parse('2024-04-26')->isHoliday());
+        self::assertFalse($carbon::parse('2024-04-26')->getHolidayId());
+        self::assertFalse($carbon::parse('2024-04-26')->getHolidayName());
+        self::assertFalse($carbon::parse('2024-04-26')->getHolidayName('da'));
+    }
+}