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<?php |
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namespace GetSky\AIRAC; |
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/** |
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* Class Producer |
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* @package GetSky\AIRAC |
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*/ |
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class Producer |
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{ |
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/** |
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* @var \DateTime |
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*/ |
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private $bearing; |
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/** |
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* @param \DateTime|null $bearing |
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*/ |
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public function __construct(\DateTime $bearing = null) |
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{ |
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$this->bearing = $bearing ? $bearing : new \DateTime('2016-01-07'); |
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} |
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/** |
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* @return \DateTime |
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*/ |
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public function getBearingDate() |
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{ |
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return $this->bearing; |
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} |
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/** |
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* Get next AIRAC date. |
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* |
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* @param \DateTime $date |
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* |
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* @return Airac |
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*/ |
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public function next(\DateTime $date) |
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{ |
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return $this->circle($date, 1); |
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} |
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/** |
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* Get current AIRAC date. |
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* |
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* @param \DateTime $date |
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* |
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* @return Airac |
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*/ |
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public function now(\DateTime $date) |
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{ |
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return $this->circle($date, 0); |
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} |
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/** |
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* Get last AIRAC date. |
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* |
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* @param \DateTime $date |
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* |
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* @return Airac |
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*/ |
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public function last(\DateTime $date) |
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{ |
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return $this->circle($date, -1); |
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} |
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/** |
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* Generator AIRAC dates. |
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* |
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* @param \DateTime $date |
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* @param $step |
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* |
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* @return Airac |
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*/ |
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private function circle(\DateTime $date, $step) |
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{ |
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$positive = ($date >= $this->bearing) ? 1 : -1; |
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$days = $date->diff($this->bearing)->days; |
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$countCircle = $positive * floor($days / 28) + $step - (($positive < 0 && $days % 28 != 0) ? 1 : 0); |
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$dateStart = clone $this->bearing; |
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$dateStart->modify(($countCircle * 28) . ' day'); |
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$dateEnd = clone $dateStart; |
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$dateEnd->modify('28 day'); |
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return new Airac($dateStart, $dateEnd, $this->calcNumber($dateStart)); |
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} |
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/** |
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*Calculated number of AIRAC. |
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* |
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* @param \DateTime $date |
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* |
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* @return string |
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*/ |
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private function calcNumber(\DateTime $date) |
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{ |
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$year = \DateTime::createFromFormat('!Y', $date->format('Y')); |
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$number = 1 + floor($year->diff($date)->days / 28); |
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return $year->format('y') . sprintf("%02d", $number); |
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} |
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} |
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GetSky /
php-airac
