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<?php
/**
* The base class for H5P events. Extend to track H5P events in your system.
*
* @package H5P
* @copyright 2016 Joubel AS
* @license MIT
*/
abstract class H5PEventBase {
// Constants
const LOG_NONE = 0;
const LOG_ALL = 1;
const LOG_ACTIONS = 2;
// Static options
public static $log_level = self::LOG_ACTIONS;
public static $log_time = 2592000; // 30 Days
// Protected variables
protected $id, $type, $sub_type, $content_id, $content_title, $library_name, $library_version, $time;
/**
* Adds event type, h5p library and timestamp to event before saving it.
*
* Common event types with sub type:
* content, <none> – content view
* embed – viewed through embed code
* shortcode – viewed through internal shortcode
* edit – opened in editor
* delete – deleted
* create – created through editor
* create upload – created through upload
* update – updated through editor
* update upload – updated through upload
* upgrade – upgraded
*
* results, <none> – view own results
* content – view results for content
* set – new results inserted or updated
*
* settings, <none> – settings page loaded
*
* library, <none> – loaded in editor
* create – new library installed
* update – old library updated
*
* @param string $type
* Name of event type
* @param string $sub_type
* Name of event sub type
* @param string $content_id
* Identifier for content affected by the event
* @param string $content_title
* Content title (makes it easier to know which content was deleted etc.)
* @param string $library_name
* Name of the library affected by the event
* @param string $library_version
* Library version
*/
function __construct($type, $sub_type = NULL, $content_id = NULL, $content_title = NULL, $library_name = NULL, $library_version = NULL) {
$this->type = $type;
$this->sub_type = $sub_type;
$this->content_id = $content_id;
$this->content_title = $content_title;
$this->library_name = $library_name;
$this->library_version = $library_version;
$this->time = time();
if (self::validLogLevel($type, $sub_type)) {
$this->save();
}
if (self::validStats($type, $sub_type)) {
$this->saveStats();
}
}
/**
* Determines if the event type should be saved/logged.
*
* @param string $type
* Name of event type
* @param string $sub_type
* Name of event sub type
* @return boolean
*/
private static function validLogLevel($type, $sub_type) {
switch (self::$log_level) {
default:
case self::LOG_NONE:
return FALSE;
case self::LOG_ALL:
return TRUE; // Log everything
case self::LOG_ACTIONS:
if (self::isAction($type, $sub_type)) {
return TRUE; // Log actions
}
return FALSE;
}
}
/**
* Check if the event should be included in the statistics counter.
*
* @param string $type
* Name of event type
* @param string $sub_type
* Name of event sub type
* @return boolean
*/
private static function validStats($type, $sub_type) {
if ( ($type === 'content' && $sub_type === 'shortcode insert') || // Count number of shortcode inserts
($type === 'library' && $sub_type === NULL) || // Count number of times library is loaded in editor
($type === 'results' && $sub_type === 'content') ) { // Count number of times results page has been opened
return TRUE;
}
elseif (self::isAction($type, $sub_type)) { // Count all actions
return TRUE;
}
return FALSE;
}
/**
* Check if event type is an action.
*
* @param string $type
* Name of event type
* @param string $sub_type
* Name of event sub type
* @return boolean
*/
private static function isAction($type, $sub_type) {
if ( ($type === 'content' && in_array($sub_type, array('create', 'create upload', 'update', 'update upload', 'upgrade', 'delete'))) ||
($type === 'library' && in_array($sub_type, array('create', 'update'))) ) {
return TRUE; // Log actions
}
return FALSE;
}
/**
* A helper which makes it easier for systems to save the data.
* Add all relevant properties to a assoc. array.
* There are no NULL values. Empty string or 0 is used instead.
* Used by both Drupal and WordPress.
*
* @return array with keyed values
*/
protected function getDataArray() {
return array(
'created_at' => $this->time,
'type' => $this->type,
'sub_type' => empty($this->sub_type) ? '' : $this->sub_type,
'content_id' => empty($this->content_id) ? 0 : $this->content_id,
'content_title' => empty($this->content_title) ? '' : $this->content_title,
'library_name' => empty($this->library_name) ? '' : $this->library_name,
'library_version' => empty($this->library_version) ? '' : $this->library_version
);
}
/**
* A helper which makes it easier for systems to save the data.
* Used in WordPress.
*
* @return array with strings
*/
protected function getFormatArray() {
return array(
'%d',
'%s',
'%s',
'%d',
'%s',
'%s',
'%s'
);
}
/**
* Stores the event data in the database.
*
* Must be overridden by plugin.
*/
abstract protected function save();
/**
* Add current event data to statistics counter.
*
* Must be overridden by plugin.
*/
abstract protected function saveStats();
}