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<?php
namespace Kanboard\Action;
use Kanboard\Event\GenericEvent;
use Pimple\Container;
/**
* Base class for automatic actions
*
* @package action
* @author Frederic Guillot
*/
abstract class Base extends \Kanboard\Core\Base
{
/**
* Flag for called listener
*
* @access private
* @var boolean
*/
private $called = false;
/**
* Project id
*
* @access private
* @var integer
*/
private $project_id = 0;
/**
* User parameters
*
* @access private
* @var array
*/
private $params = array();
/**
* Attached event name
*
* @access protected
* @var string
*/
protected $event_name = '';
/**
* Container instance
*
* @access protected
* @var \Pimple\Container
*/
protected $container;
/**
* Execute the action
*
* @abstract
* @access public
* @param array $data Event data dictionary
* @return bool True if the action was executed or false when not executed
*/
abstract public function doAction(array $data);
/**
* Get the required parameter for the action (defined by the user)
*
* @abstract
* @access public
* @return array
*/
abstract public function getActionRequiredParameters();
/**
* Get the required parameter for the event (check if for the event data)
*
* @abstract
* @access public
* @return array
*/
abstract public function getEventRequiredParameters();
/**
* Get the compatible events
*
* @abstract
* @access public
* @return array
*/
abstract public function getCompatibleEvents();
/**
* Check if the event data meet the action condition
*
* @access public
* @param array $data Event data dictionary
* @return bool
*/
abstract public function hasRequiredCondition(array $data);
/**
* Constructor
*
* @access public
* @param \Pimple\Container $container Container
* @param integer $project_id Project id
* @param string $event_name Attached event name
*/
public function __construct(Container $container, $project_id, $event_name)
{
$this->container = $container;
$this->project_id = $project_id;
$this->event_name = $event_name;
$this->called = false;
}
/**
* Return class information
*
* @access public
* @return string
*/
public function __toString()
{
return get_called_class();
}
/**
* Get project id
*
* @access public
* @return integer
*/
public function getProjectId()
{
return $this->project_id;
}
/**
* Set an user defined parameter
*
* @access public
* @param string $name Parameter name
* @param mixed $value Value
*/
public function setParam($name, $value)
{
$this->params[$name] = $value;
}
/**
* Get an user defined parameter
*
* @access public
* @param string $name Parameter name
* @param mixed $default_value Default value
* @return mixed
*/
public function getParam($name, $default_value = null)
{
return isset($this->params[$name]) ? $this->params[$name] : $default_value;
}
/**
* Check if an action is executable (right project and required parameters)
*
* @access public
* @param array $data Event data dictionary
* @return bool True if the action is executable
*/
public function isExecutable(array $data)
{
return $this->hasCompatibleEvent() &&
$this->hasRequiredProject($data) &&
$this->hasRequiredParameters($data) &&
$this->hasRequiredCondition($data);
}
/**
* Check if the event is compatible with the action
*
* @access public
* @return bool
*/
public function hasCompatibleEvent()
{
return in_array($this->event_name, $this->getCompatibleEvents());
}
/**
* Check if the event data has the required project
*
* @access public
* @param array $data Event data dictionary
* @return bool
*/
public function hasRequiredProject(array $data)
{
return isset($data['project_id']) && $data['project_id'] == $this->project_id;
}
/**
* Check if the event data has required parameters to execute the action
*
* @access public
* @param array $data Event data dictionary
* @return bool True if all keys are there
*/
public function hasRequiredParameters(array $data)
{
foreach ($this->getEventRequiredParameters() as $parameter) {
if (! isset($data[$parameter])) {
return false;
}
}
return true;
}
/**
* Execute the action
*
* @access public
* @param \Event\GenericEvent $event Event data dictionary
* @return bool True if the action was executed or false when not executed
*/
public function execute(GenericEvent $event)
{
// Avoid infinite loop, a listener instance can be called only one time
if ($this->called) {
return false;
}
$data = $event->getAll();
$result = false;
if ($this->isExecutable($data)) {
$this->called = true;
$result = $this->doAction($data);
}
if (DEBUG) {
$this->container['logger']->debug(get_called_class().' => '.($result ? 'true' : 'false'));
}
return $result;
}
}
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