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<?php |
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namespace COG\ChronoShifter\Period; |
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/** |
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* @author Kristjan Siimson <[email protected]> |
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* @package Period\Domain |
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*/ |
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class IsoChronic implements Period |
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{ |
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/** |
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* @var string |
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*/ |
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private $referenceDate; |
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/** |
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* @var int |
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*/ |
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private $length; |
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/** |
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* @var string |
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*/ |
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private $startDate; |
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/** |
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* @var string |
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*/ |
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private $endDate; |
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/** |
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* @param string $date |
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*/ |
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public function __construct($date, $referenceDate, $length) |
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{ |
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$this->referenceDate = substr($referenceDate, 0, 10); |
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$this->length = $length; |
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$this->setDate(substr($date, 0, 10)); |
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} |
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/** |
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* @return string |
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*/ |
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public function getStartDate() |
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{ |
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return $this->startDate; |
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} |
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/** |
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* @return string |
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*/ |
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public function getEndDate() |
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{ |
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return $this->endDate; |
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} |
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/** |
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* @return int |
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*/ |
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public function getNumberOfDays() |
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{ |
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return $this->length - 1; |
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} |
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public function next() |
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{ |
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$this->setDate(date('Y-m-d', strtotime(sprintf('+%d day', $this->length), strtotime($this->startDate)))); |
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} |
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public function previous() |
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{ |
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$this->setDate(date('Y-m-d', strtotime(sprintf('-%d day', $this->length), strtotime($this->startDate)))); |
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} |
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/** |
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* @param string $date |
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*/ |
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private function setDate($date) |
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{ |
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$date = new \DateTime($date); |
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$referenceDate = new \DateTime($this->referenceDate); |
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$offset = $referenceDate->diff($date)->days; |
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if ($referenceDate > $date) { |
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$days = ceil($offset / $this->length) * $this->length; |
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$this->startDate = date('Y-m-d', strtotime(sprintf('-%d day', $days), strtotime($referenceDate->format('Y-m-d')))); |
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} else { |
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$days = floor($offset / $this->length) * $this->length; |
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$this->startDate = date('Y-m-d', strtotime(sprintf('+%d day', $days), strtotime($referenceDate->format('Y-m-d')))); |
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} |
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$this->endDate = date('Y-m-d', strtotime(sprintf('+%d day', $this->length - 1), strtotime($this->startDate))); |
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} |
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} |
cashongo /
chronoShifter
