/**
* Check if the user did see the last update for an entity based on
* the last view time annotation and the updated time for the elgg entity
*
* @param $entity_guid
* @param $user_guid
*/
function did_see_last_update($entity_guid, $user_guid)
{
$entity = get_entity($entity_guid);
if ($entity) {
$user = get_entity($user_guid);
if (!$user) {
$user = elgg_get_logged_in_user_entity();
}
$last_view_time = get_last_view_time($entity->guid, $user->guid);
$last_view_time = $last_view_time ? $last_view_time : 0;
if ($entity->time_updated > $last_view_time) {
return true;
} else {
return false;
}
}
return null;
}
/**
* Hook that allow other plugins to get the last view time for an entity
*
* @param $hook
* @param $type
* @param $returnvalue
* @param $params
*/
function get_last_view_time_hook($hook, $type, $returnvalue, $params)
{
if ($params['entity']) {
// We get the entity as a hook params instead of the entity_guid just for follow the elgg pattern of pass the entity instead of the entity_guid
$user_guid = isset($params['user_guid']) ? $params['user_guid'] : 0;
return get_last_view_time($params['entity']->guid, $user_guid);
}
}