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<?php |
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declare(strict_types=1); |
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/** |
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* Copyright (c) Andreas Heigl<[email protected]> |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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* |
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* @author Andreas Heigl<[email protected]> |
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* @copyright Andreas Heigl |
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* @license http://www.opensource.org/licenses/mit-license.php MIT-License |
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* @since 08.03.2017 |
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* @link http://github.com/heiglandreas/org.heigl.Holidaychecker |
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*/ |
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namespace Org_Heigl\Holidaychecker\IteratorItem; |
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use DateInterval; |
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use DateTime; |
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use DateTimeImmutable; |
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use DateTimeInterface; |
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use DateTimeZone; |
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use Org_Heigl\DateIntervalComparator\DateIntervalComparator; |
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use Org_Heigl\Holidaychecker\HolidayIteratorItemInterface; |
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use function easter_days; |
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class Easter implements HolidayIteratorItemInterface |
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{ |
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private $offset; |
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private $holiday; |
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private $name; |
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public function __construct(string $name, bool $holiday, int $offset) |
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{ |
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$this->offset = $offset; |
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$this->holiday = $holiday; |
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$this->name = $name; |
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} |
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public function dateMatches(DateTimeInterface $date): bool |
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{ |
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$year = (int) $date->format('Y'); |
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$easter = $this->getEaster($year); |
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$day = $this->getOffsetDay($easter, $this->offset); |
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if (false === $day) { |
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return false; |
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} |
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$comparator = new DateIntervalComparator(); |
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return 0 > $comparator->compare($day->diff($date), new DateInterval('P1D')); |
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} |
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public function getName(): string |
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{ |
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return $this->name; |
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} |
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public function isHoliday(): bool |
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{ |
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return $this->holiday; |
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} |
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protected function getEaster(int $year): DateTimeImmutable |
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{ |
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$base = new DateTimeImmutable($year . "-03-21", new DateTimeZone('UTC')); |
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$days = easter_days($year); |
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return $base->add(new DateInterval("P{$days}D")); |
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} |
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/** |
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* @param DateTime|DateTimeImmutable $date |
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* @return DateTime|DateTimeImmutable|false |
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*/ |
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private function getOffsetDay($date, int $offset) |
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{ |
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if ($offset < 0) { |
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return $date->sub(new DateInterval('P' . $offset * -1 . 'D')); |
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} |
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return $date->add(new DateInterval('P' . $offset . 'D')); |
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} |
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} |
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heiglandreas /
holidayChecker
