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<?php |
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namespace Twitter\Serializer; |
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use Assert\Assertion; |
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use Twitter\Object\TwitterDate; |
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use Twitter\Object\TwitterEvent; |
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use Twitter\TwitterSerializable; |
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use Twitter\TwitterSerializer; |
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class TwitterEventSerializer implements TwitterSerializer |
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{ |
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/** |
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* @var TwitterUserSerializer |
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*/ |
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private $userSerializer; |
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/** |
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* @var TwitterEventTargetSerializer |
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*/ |
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private $targetSerializer; |
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/** |
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* @param TwitterUserSerializer $userSerializer |
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* @param TwitterEventTargetSerializer $targetSerializer |
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*/ |
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public function __construct(TwitterUserSerializer $userSerializer, TwitterEventTargetSerializer $targetSerializer) |
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{ |
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$this->userSerializer = $userSerializer; |
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$this->targetSerializer = $targetSerializer; |
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} |
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/** |
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* @param TwitterSerializable $object |
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* @return \stdClass |
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*/ |
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public function serialize(TwitterSerializable $object) |
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{ |
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/* @var TwitterEvent $object */ |
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Assertion::true($this->canSerialize($object), 'object must be an instance of TwitterEvent'); |
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Assertion::eq(new \DateTimeZone('UTC'), $object->getDate()->getTimezone()); |
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$event = new \stdClass(); |
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$event->event = $object->getType(); |
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$event->source = $this->userSerializer->serialize($object->getSource()); |
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$event->created_at = $object->getDate()->format(TwitterDate::FORMAT); |
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if ($object->getTarget()) { |
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$event->target = $this->userSerializer->serialize($object->getTarget()); |
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} |
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if ($object->getObject()) { |
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$event->target_object = $this->targetSerializer->serialize($object->getObject()); |
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} |
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return $event; |
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} |
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/** |
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* @param \stdClass $obj |
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* @param array $context |
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* @return TwitterEvent |
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*/ |
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public function unserialize($obj, array $context = []) |
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{ |
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Assertion::true($this->canUnserialize($obj), 'object is not unserializable'); |
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$createdAt = new \DateTimeImmutable($obj->created_at); |
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Assertion::eq(new \DateTimeZone('UTC'), $createdAt->getTimezone()); |
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return TwitterEvent::create( |
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$obj->event, |
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$this->userSerializer->unserialize($obj->source), |
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isset($obj->target) ? $this->userSerializer->unserialize($obj->target) : null, |
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isset($obj->target_object) ? $this->targetSerializer->unserialize($obj->target_object) : null, |
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$createdAt |
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); |
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} |
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/** |
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* @param TwitterSerializable $object |
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* @return boolean |
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*/ |
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public function canSerialize(TwitterSerializable $object) |
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{ |
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return $object instanceof TwitterEvent; |
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} |
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/** |
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* @param \stdClass $object |
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* @return boolean |
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*/ |
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public function canUnserialize($object) |
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{ |
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return isset($object->event); |
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} |
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/** |
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* @return TwitterEventSerializer |
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*/ |
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public static function build() |
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{ |
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return new self( |
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TwitterUserSerializer::build(), |
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TwitterEventTargetSerializer::build() |
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); |
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} |
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} |
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