TimePeriod.php

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<?php

namespace ILIAS\LTI\ToolProvider\Content;

class TimePeriod
{
    private ?int $startDateTime = null;

    private ?int $endDateTime = null;

    public function __construct(int $startDateTime, int $endDateTime)
    {
        $this->startDateTime = $startDateTime;
        $this->endDateTime = $endDateTime;
    }

    public function toJsonldObject()
    {
        return $this->toJsonObject();
    }

    public function toJsonObject(): \stdClass
    {
        $timePeriod = new \stdClass();
        if (!is_null($this->startDateTime)) {
            $timePeriod->startDateTime = gmdate('Y-m-d\TH:i:s\Z', $this->startDateTime);
        }
        if (!is_null($this->endDateTime)) {
            $timePeriod->endDateTime = gmdate('Y-m-d\TH:i:s\Z', $this->endDateTime);
        }

        return $timePeriod;
    }

    public static function fromJsonObject(object $item): ?TimePeriod
    {
        $obj = null;
        $startDateTime = null;
        $endDateTime = null;
        if (is_object($item)) {
            $url = null;
            foreach (get_object_vars($item) as $name => $value) {
                switch ($name) {
                    case 'startDateTime':
                        $startDateTime = strtotime($item->startDateTime);
                        break;
                    case 'endDateTime':
                        $endDateTime = strtotime($item->endDateTime);
                        break;
                }
            }
        } else {
            $url = $item;
        }
        if ($startDateTime || $endDateTime) {
            $obj = new TimePeriod($startDateTime, $endDateTime);
        }

        return $obj;
    }
}