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<?php |
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namespace Loevgaard\DandomainDateTime; |
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use DateTimeZone; |
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/** |
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* This class represents a date time in Dandomain where the time zone is always Europe/Copenhagen |
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*/ |
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class DateTimeImmutable extends \DateTimeImmutable { |
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public function __construct($time = 'now', DateTimeZone $timezone = null) |
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{ |
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if($timezone !== null) { |
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throw new \InvalidArgumentException('Do not pass time zone as an argument'); |
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} |
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if(strpos($time, '@') !== false) { |
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throw new \InvalidArgumentException('Use DateTimeImmutable::createFromTimestamp instead'); |
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} |
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parent::__construct($time, static::defaultTimeZone()); |
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} |
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/** |
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* @param \DateTimeInterface $dt |
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* |
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* @return static |
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*/ |
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public static function instance(\DateTimeInterface $dt) |
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{ |
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if ($dt instanceof static) { |
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return clone $dt; |
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} |
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return new static($dt->format('Y-m-d H:i:s.u')); |
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} |
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/** |
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* @param string $format |
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* @param string $time |
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* @param \DateTimeZone $timezone |
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* @return DateTimeImmutable |
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*/ |
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public static function createFromFormat($format, $time, $timezone = null) |
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{ |
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if($timezone !== null) { |
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throw new \InvalidArgumentException('Do not pass time zone as an argument'); |
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} |
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$dt = parent::createFromFormat($format, $time, static::defaultTimeZone()); |
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return static::instance($dt); |
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} |
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/** |
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* @param \DateTime $dateTime |
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* @return DateTimeImmutable |
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*/ |
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public static function createFromMutable($dateTime) : DateTimeImmutable |
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{ |
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$dt = static::createFromMutable($dateTime); |
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return $dt->setTimezone(static::defaultTimeZone()); |
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} |
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/** |
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* @param int|string $timestamp |
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* @return DateTimeImmutable |
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*/ |
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public static function createFromTimestamp($timestamp) : DateTimeImmutable |
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{ |
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$dateTime = new \DateTime('@'.$timestamp); |
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$dateTime->setTimezone(static::defaultTimeZone()); |
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return static::instance($dateTime); |
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} |
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public static function createFromJson(string $json) : DateTimeImmutable |
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{ |
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preg_match('/([0-9]+)\+/', $json, $matches); |
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if(!isset($matches[1])) { |
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throw new \InvalidArgumentException('$json is not a valid JSON date. Input: ' . $json); |
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} |
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// remove the last three digits since the json date is given in milliseconds |
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$timestamp = substr($matches[1], 0, -3); |
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return static::createFromTimestamp($timestamp); |
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} |
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/** |
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* Returns the default Dandomain time zone |
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* |
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* @return DateTimeZone |
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*/ |
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public static function defaultTimeZone() : \DateTimeZone |
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{ |
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return new \DateTimeZone('Europe/Copenhagen'); |
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} |
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} |
loevgaard /
dandomain-datetime
