Add Greece holidays

src/Countries/Greece.php

@@ -0,0 +1,81 @@
+<?php
+
+namespace Spatie\Holidays\Countries;
+
+use Carbon\CarbonImmutable;
+
+class Greece extends Country
+{
+    public function countryCode(): string
+    {
+        return 'el';
+    }
+
+    /** @return array<string, string|CarbonImmutable> */
+    protected function allHolidays(int $year): array
+    {
+        return array_merge([
+            'Πρωτοχρονιά'         => '01-01',
+            'Θεοφάνια'            => '01-06',
+            '25η Μαρτίου'         => '03-25',
+            'Πρωτομαγιά'          => '05-01',
+            'Δεκαπενταύγουστος'   => '08-15',
+            '28η Οκτωβρίου'       => '10-28',
+            'Χριστούγεννα'        => '12-25',
+            'Σύναξη της Θεοτόκου' => '12-26',
+
+        ], $this->variableHolidays($year));
+    }
+
+    /** @return array<string, CarbonImmutable> */
+    protected function variableHolidays(int $year): array
+    {
+
+        $orthodox_easter = CarbonImmutable::createFromTimestamp(
+            $this->calculateOrthodoxEaster($year)
+        )->setTimezone("Europe/Athens");
+
+
+        $protomagia = CarbonImmutable::createFromFormat('Y-m-d', "{$year}-05-01");
+
+        if (
+            $protomagia == $orthodox_easter->subDays(2) ||
+            $protomagia == $orthodox_easter->subDays(1) ||
+            $protomagia == $orthodox_easter ||
+            $protomagia == $orthodox_easter->addDay()
+        ) {
+            $protomagia = $orthodox_easter->addDays(2);
+        }
+        if ($protomagia->isSunday()) {
+            $protomagia = $protomagia->addDay();
+        }
+
+        return [
+            'Καθαρά Δευτέρα'    => $orthodox_easter->subDays(48), //always Monday
+            'Πρωτομαγιά'        => $protomagia,
+            'Μεγάλη Παρασκευή'  => $orthodox_easter->subDays(2),
+            'Κυριακή του Πάσχα' => $orthodox_easter,
+            'Δευτέρα του Πάσχα' => $orthodox_easter->addDay(),
+            'Αγίου Πνεύματος'   => $orthodox_easter->addDays(50), //always Monday
+        ];
+    }
+
+    /** @return integer */
+    protected function calculateOrthodoxEaster(int $year): int
+    {
+      $a = $year % 4;
+      $b = $year % 7;
+      $c = $year % 19;
+      $d = (19 * $c + 15) % 30;
+      $e = (2 * $a + 4 * $b - $d + 34) % 7;
+      $month = (int) (($d + $e + 114) / 31);
+      $day = (($d + $e + 114) % 31) + 1;
+      // julian to gregorian
+      $jtg = (int) ($year / 100) - (int) ($year / 400) - 2;
+
+      $easterDate = mktime(0, 0, 0, $month, $day + $jtg, $year);
+
+      return (int) $easterDate;
+
+    }
+}

tests/.pest/snapshots/Countries/GreeceTest/it_can_calculate_hellenic_holidays.snap

@@ -0,0 +1,54 @@
+[
+    {
+        "name": "\u03a0\u03c1\u03c9\u03c4\u03bf\u03c7\u03c1\u03bf\u03bd\u03b9\u03ac",
+        "date": "2024-01-01"
+    },
+    {
+        "name": "\u0398\u03b5\u03bf\u03c6\u03ac\u03bd\u03b9\u03b1",
+        "date": "2024-01-06"
+    },
+    {
+        "name": "\u039a\u03b1\u03b8\u03b1\u03c1\u03ac \u0394\u03b5\u03c5\u03c4\u03ad\u03c1\u03b1",
+        "date": "2024-03-18"
+    },
+    {
+        "name": "25\u03b7 \u039c\u03b1\u03c1\u03c4\u03af\u03bf\u03c5",
+        "date": "2024-03-25"
+    },
+    {
+        "name": "\u03a0\u03c1\u03c9\u03c4\u03bf\u03bc\u03b1\u03b3\u03b9\u03ac",
+        "date": "2024-05-01"
+    },
+    {
+        "name": "\u039c\u03b5\u03b3\u03ac\u03bb\u03b7 \u03a0\u03b1\u03c1\u03b1\u03c3\u03ba\u03b5\u03c5\u03ae",
+        "date": "2024-05-03"
+    },
+    {
+        "name": "\u039a\u03c5\u03c1\u03b9\u03b1\u03ba\u03ae \u03c4\u03bf\u03c5 \u03a0\u03ac\u03c3\u03c7\u03b1",
+        "date": "2024-05-05"
+    },
+    {
+        "name": "\u0394\u03b5\u03c5\u03c4\u03ad\u03c1\u03b1 \u03c4\u03bf\u03c5 \u03a0\u03ac\u03c3\u03c7\u03b1",
+        "date": "2024-05-06"
+    },
+    {
+        "name": "\u0391\u03b3\u03af\u03bf\u03c5 \u03a0\u03bd\u03b5\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2",
+        "date": "2024-06-24"
+    },
+    {
+        "name": "\u0394\u03b5\u03ba\u03b1\u03c0\u03b5\u03bd\u03c4\u03b1\u03cd\u03b3\u03bf\u03c5\u03c3\u03c4\u03bf\u03c2",
+        "date": "2024-08-15"
+    },
+    {
+        "name": "28\u03b7 \u039f\u03ba\u03c4\u03c9\u03b2\u03c1\u03af\u03bf\u03c5",
+        "date": "2024-10-28"
+    },
+    {
+        "name": "\u03a7\u03c1\u03b9\u03c3\u03c4\u03bf\u03cd\u03b3\u03b5\u03bd\u03bd\u03b1",
+        "date": "2024-12-25"
+    },
+    {
+        "name": "\u03a3\u03cd\u03bd\u03b1\u03be\u03b7 \u03c4\u03b7\u03c2 \u0398\u03b5\u03bf\u03c4\u03cc\u03ba\u03bf\u03c5",
+        "date": "2024-12-26"
+    }
+]

tests/Countries/GreeceTest.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Spatie\Holidays\Tests\Countries;
+
+use Carbon\CarbonImmutable;
+use Spatie\Holidays\Holidays;
+
+it('can calculate hellenic holidays', function () {
+    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+
+    $holidays = Holidays::for(country: 'el')->get();
+
+    expect($holidays)
+        ->toBeArray()
+        ->not()->toBeEmpty();
+
+    expect(formatDates($holidays))->toMatchSnapshot();
+});