Action to assign an activity to the triggered contact and send them activity details via email.

CRM/CivirulesActions/Activity/AssignNemail.php

+<?php
+/**
+ * @author Wil Colón <it@unidosnow.org>
+ * @license http://www.gnu.org/licenses/agpl-3.0.html
+ */
+
+class CRM_CivirulesActions_Activity_AssignNemail extends CRM_CivirulesActions_Generic_Api {
+
+  private $param2 = [];
+
+  /**
+   * Method to get the api entity to process in this CiviRule action
+   *
+   * @access protected
+   * @abstract
+   */
+  protected function getApiEntity() {
+    return 'Activity';
+  }
+
+  /**
+   * Method to get the api action to process in this CiviRule action
+   *
+   * @access protected
+   * @abstract
+   */
+  protected function getApiAction() {
+    return 'Create';
+  }
+
+  /**
+   * Returns an array with parameters used for processing an action
+   *
+   * @param array $parameters
+   * @param CRM_Civirules_TriggerData_TriggerData $triggerData
+   * @return array
+   * @access protected
+   */
+  protected function alterApiParameters($parameters, CRM_Civirules_TriggerData_TriggerData $triggerData) {
+    $this->param2['id'] = $parameters['id'] = ($triggerData->getEntityData('Activity'))['id'];
+    $this->param2['assignee_id'] = $parameters['assignee_id'] = $triggerData->getContactId();
+    return $parameters;
+  }
+
+  public function processAction(CRM_Civirules_TriggerData_TriggerData $triggerData) {
+    //Normal API execution
+    parent::processAction($triggerData);
+    //If no exception thrown, send email with Activity details to this one assignee
+    //Mimicks how webform_civicrm sends email to an activity assignee
+    $assigneeV = end(civicrm_api3('Contact', 'get', ['id' => $this->param2['assignee_id']])['values']);
+    CRM_Case_BAO_Case::sendActivityCopy(NULL, $this->param2['id'], [$assigneeV['email'] => $assigneeV], NULL, NULL);
+  }
+
+  /**
+   * Returns a redirect url to extra data input from the user after adding a action
+   *
+   * Return false if you do not need extra data input
+   *
+   * @param int $ruleActionId
+   * @return bool|string
+   * @access public
+   */
+  public function getExtraDataInputUrl($ruleActionId) {
+    return FALSE;
+  }
+
+  /**
+   * This function validates whether this action works with the selected trigger.
+   *
+   * This function could be overriden in child classes to provide additional validation
+   * whether an action is possible in the current setup.
+   *
+   * @param CRM_Civirules_Trigger $trigger
+   * @param CRM_Civirules_BAO_Rule $rule
+   * @return bool
+   */
+  public function doesWorkWithTrigger(CRM_Civirules_Trigger $trigger, CRM_Civirules_BAO_Rule $rule) {
+    $entities = $trigger->getProvidedEntities();
+    if (isset($entities['Activity'])) {
+      return true;
+    }
+    return false;
+  }
+
+}
\ No newline at end of file