Add support for Croatian public holidays

src/Countries/Croatia.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Spatie\Holidays\Countries;
+
+use Carbon\CarbonImmutable;
+
+class Croatia extends Country
+{
+    public function countryCode(): string
+    {
+        return 'hr';
+    }
+
+    /** @return array<string, CarbonImmutable|string> */
+    protected function allHolidays(int $year): array
+    {
+        return array_merge([
+            'Nova godina' => '01-01',
+            'Bogojavljenje' => '01-06',
+            'Praznik rada' => '05-01',
+            'Dan državnosti' => '05-30',
+            'Dan antifašističke borbe' => '06-22',
+            'Dan pobjede i domovinske zahvalnosti i Dan hrvatskih branitelja' => '08-05',
+            'Velika Gospa' => '08-15',
+            'Svi sveti' => '11-01',
+            'Dan sjećanja na žrtve Domovinskog rata i Dan sjećanja na žrtvu Vukovara i Škabrnje' => '11-18',
+            'Božić' => '12-25',
+            'Sveti Stjepan' => '12-26',
+        ], $this->variableHolidays($year));
+    }
+
+    /** @return array<string, CarbonImmutable> */
+    protected function variableHolidays(int $year): array
+    {
+        $easter = CarbonImmutable::createFromTimestamp(easter_date($year))
+            ->setTimezone('Europe/Zagreb');
+
+        return [
+            'Uskrsni ponedjeljak' => $easter->addDay(),
+            'Tijelovo' => $easter->addDays(60),
+        ];
+    }
+}

tests/.pest/snapshots/Countries/CroatiaTest/it_can_calculate_croatian_holidays.snap

@@ -0,0 +1,54 @@
+[
+    {
+        "name": "Nova godina",
+        "date": "2024-01-01"
+    },
+    {
+        "name": "Bogojavljenje",
+        "date": "2024-01-06"
+    },
+    {
+        "name": "Uskrsni ponedjeljak",
+        "date": "2024-04-01"
+    },
+    {
+        "name": "Praznik rada",
+        "date": "2024-05-01"
+    },
+    {
+        "name": "Tijelovo",
+        "date": "2024-05-30"
+    },
+    {
+        "name": "Dan dr\u017eavnosti",
+        "date": "2024-05-30"
+    },
+    {
+        "name": "Dan antifa\u0161isti\u010dke borbe",
+        "date": "2024-06-22"
+    },
+    {
+        "name": "Dan pobjede i domovinske zahvalnosti i Dan hrvatskih branitelja",
+        "date": "2024-08-05"
+    },
+    {
+        "name": "Velika Gospa",
+        "date": "2024-08-15"
+    },
+    {
+        "name": "Svi sveti",
+        "date": "2024-11-01"
+    },
+    {
+        "name": "Dan sje\u0107anja na \u017ertve Domovinskog rata i Dan sje\u0107anja na \u017ertvu Vukovara i \u0160kabrnje",
+        "date": "2024-11-18"
+    },
+    {
+        "name": "Bo\u017ei\u0107",
+        "date": "2024-12-25"
+    },
+    {
+        "name": "Sveti Stjepan",
+        "date": "2024-12-26"
+    }
+]

tests/Countries/CroatiaTest.php

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+<?php
+
+namespace Spatie\Holidays\Tests\Countries;
+
+use Carbon\CarbonImmutable;
+use Spatie\Holidays\Holidays;
+
+it('can calculate croatian holidays', function () {
+    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+
+    $holidays = Holidays::for(country: 'hr')->get();
+
+    expect($holidays)
+        ->toBeArray()
+        ->not()->toBeEmpty();
+
+    expect(formatDates($holidays))->toMatchSnapshot();
+});