<?php

/**
 * Exposes a very basic API for reacting to application transactions. Subclasses can override
 * @{method:getProcessableTransactionTemplates} or @{method:canProcessTransaction} dending on
 * how finely they would like to filter transactions for processing.
 */
abstract class CITransactionProcessor extends Phobject {

  abstract public function getProcessableTransactionClasses();

  public function canProcessTransaction(PhabricatorApplicationTransaction $transaction) {
    return in_array(get_class($transaction), $this->getProcessableTransactionClasses());
  }

  abstract protected function processTransaction(PhabricatorApplicationTransaction $transaction);

  public function processTransactions(array $transactions) {
    $results = [];
    foreach ($transactions as $transaction) {
      $results[$transaction->getPHID()] = $this->processTransaction($transaction);
    }
    return $results;
  }

  public function isEnabled() {
    return true;
  }

  final public static function getAllProcessors() {
    $processors = (new PhutilClassMapQuery())
      ->setAncestorClass(__CLASS__)
      ->setFilterMethod('isEnabled')
      ->execute();
    return $processors;
  }

}