/**
* Determines if $viewer has access to $user's friends list
*
* @param ElggUser $user User whose friends are to be displayed
* @param ElggUser $viewer Viewer
* @return bool
*/
function user_friends_can_view_friends(ElggUser $user, ElggUser $viewer = null)
{
if (!isset($viewer)) {
$viewer = elgg_get_logged_in_user_entity();
}
$permission = false;
if ($viewer && elgg_check_access_overrides($viewer->guid)) {
$permission = true;
}
$setting = elgg_get_plugin_user_setting('friend_list_visibility', $user->guid, 'user_friends');
if (!isset($setting)) {
$setting = elgg_get_plugin_setting('friend_list_visibility', 'user_friends', ACCESS_PUBLIC);
}
switch ((int) $setting) {
case ACCESS_PRIVATE:
$permission = $viewer && $user->canEdit($viewer->guid);
break;
case ACCESS_FRIENDS:
$permission = $viewer && $user->isFriendsWith($viewer->guid);
break;
case ACCESS_LOGGED_IN:
$permission = $viewer;
break;
case ACCESS_PUBLIC:
$permission = true;
break;
}
$params = array('viewer' => $viewer, 'user' => $user);
return elgg_trigger_plugin_hook('permissions_check:view_friends_list', 'user', $params, $permission);
}
