gnu-social/plugins/ActivityPub/EVENTS.md

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**ActivityPubValidateActivityStreamsTwoData**: To extend an Activity properties that we are managing from JSON
* `@param string $type_name` When we handle a Type, we will send you the type identifier of the one being handleded
* `@param array &$validators` attribute => Validator the array key should have the attribute name that you want to hand, the value should be a validator class
Example:
```php
public function onActivityPubValidateActivityStreamsTwoData(string $type_name, array &$validators): bool {
if ($type_name === '{Type}') {
$validators['attribute'] = myValidator::class;
}
return Event::next;
}
```
The Validator should be of the form:
```php
class myValidator extends \Plugin\ActivityPub\Util\ModelValidator
{
/**
* Validate Attribute's value
*
* @param mixed $value from JSON's attribute
* @param mixed $container A {Type}
* @return bool
* @throws Exception
*/
public function validate($value, $container): bool
{
// Validate that container is a {Type}
\ActivityPhp\Type\Util::subclassOf($container, \ActivityPhp\Type\Extended\Object\{Type}::class, true);
return {Validation Result};
```
**ActivityPubAddActivityStreamsTwoData**: To add attributes to an entity that we are managing to JSON (commonly federating out via ActivityPub)
* `@param string $type_name` When we handle a Type, we will send you the type identifier of the one being handleded
* `@param \ActivityPhp\Type\AbstractObject &$type_activity` The Activity in the intermediate format between Model and JSON
**ActivityPubActivityStreamsTwoResponse**: To add a route to ActivityPub (the route must already exist in your plugin) (commonly being requested to ActivityPub)
* `@param string $route` Route identifier
* `@param array $vars` From your controller
* `@param \Plugin\ActivityPub\Util\TypeResponse &$response` The JSON (protip: ModelResponse's handler will convert entities into TypeResponse)
Example:
```php
public function onActivityPubActivityStreamsTwoResponse(string $route, arrray $vars, ?TypeResponse &$response = null): bool {
if ($route === '{Object route}') {
$response = \Plugin\ActivityPub\Util\ModelResponse::handle($vars[{Object}]);
return Event::stop;
}
return Event::next;
}
```
**NewActivityPubActivity**: To convert an Activity Streams 2.0 formatted activity into Entities (commonly when we receive a JSON in our inbox)
* `@param Actor $actor` Actor who authored the activity
* `@param \ActivityPhp\Type\AbstractObject $type_activity` Activity
* `@param \ActivityPhp\Type\AbstractObject $type_object` Object
* `@param ?\Plugin\ActivityPub\Entity\ActivitypubActivity &$ap_act` ActivitypubActivity
**NewActivityPubActivityWithObject**: To convert an Activity Streams 2.0 formatted activity with a known object into Entities (commonly when we receive a JSON in our inbox)
* `@param Actor $actor` Actor who authored the activity
* `@param \ActivityPhp\Type\AbstractObject $type_activity` Activity
* `@param Entity $type_object` Object
* `@param ?\Plugin\ActivityPub\Entity\ActivitypubActivity &$ap_act` ActivitypubActivity