mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Echo
synced 2024-12-18 02:40:50 +00:00
121 lines
3.1 KiB
PHP
121 lines
3.1 KiB
PHP
<?php
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/**
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* Base backend class for accessing and saving echo notification data,
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* this class should only provide all the necessary interfaces and
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* implementation should be provided in each child class
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*/
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abstract class MWEchoBackend {
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private static $cache = array();
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/**
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* Factory to initialize a backend class
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* @param $backend string
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* @return MWEchoBackend
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* @throws MWException
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*/
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public static function factory( $backend ) {
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$backend = strval( $backend );
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$className = 'MW' . $backend . 'EchoBackend';
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if ( !class_exists( $className ) ) {
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throw new MWException( "$backend backend is not supported" );
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}
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if ( !isset( self::$cache[$backend] ) ) {
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self::$cache[$backend] = new $className();
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}
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return self::$cache[$backend];
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}
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/**
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* Get the enabled events for a user, which excludes user-dismissed events
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* from the general enabled events
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* @return array
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*/
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protected function getUserEnabledEvents( $user, $outputFormat ) {
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$eventTypesToLoad = EchoEvent::gatherValidEchoEvents();
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foreach ( $eventTypesToLoad as $key => $eventType ) {
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// Make sure the user is eligible to recieve this type of notification
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if ( !EchoNotificationController::getNotificationEligibility( $user, $eventType ) ) {
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unset( $eventTypesToLoad[$key] );
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}
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if ( !$user->getOption( 'echo-' . $outputFormat . '-notifications' . $eventType ) ) {
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unset( $eventTypesToLoad[$key] );
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}
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}
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return $eventTypesToLoad;
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}
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/**
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* Create a new notification
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* @param $row array
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*/
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abstract public function createNotification( $row );
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/**
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* Load notifications based on the parameters
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* @param $user User the user to get notifications for
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* @param $unread bool true to get only unread notifications
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* @param $limit int The maximum number of notifications to return
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* @param $timestamp int The timestamp to start from
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* @param $offset int The notification event id to start from
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* @return array
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*/
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abstract public function loadNotifications( $user, $unread, $limit, $timestamp, $offset );
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/**
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* Create an Echo event
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* @param $row array
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* @return int
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*/
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abstract public function createEvent( $row );
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/**
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* Load an Echo event
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* @param $id int
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* @param $fromMaster bool
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*/
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abstract public function loadEvent( $id, $fromMaster );
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/**
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* Update the extra data for an Echo event
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* @param $event EchoEvent
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*/
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abstract public function updateEventExtra( $event );
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/**
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* Create an Echo subscription
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* @param $conds array
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* @param $rows array
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*/
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abstract public function createSubscription( $conds, $rows );
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/**
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* Load an Echo subscription
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* @param $conds array
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* @return ResultWrapper
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*/
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abstract public function loadSubscription( $conds );
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/**
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* Mark notifications as read for a user
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* @param $user User
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* @param $eventIDs array
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*/
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abstract public function markRead( $user, $eventIDs );
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/**
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* Retrieves number of unread notifications that a user has.
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* @param $user User object to check notifications for
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* @param $dbSource string use master or slave storage to pull count
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* @return ResultWrapper|bool
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*/
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abstract public function getNotificationCount( $user, $dbSource );
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}
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