/**
* Create or update subscription
*/
function Streams_subscription_put($params)
{
$items = array();
$subscribed = 'no';
$updateTemplate = true;
$streamName = Streams::requestedName();
$publisherId = Streams::requestedPublisherId(true);
$user = Users::loggedInUser(true);
extract($_REQUEST);
$items = json_decode($items, true);
$stream = Streams::fetchOne($user->id, $publisherId, $streamName);
if (!$stream) {
throw new Q_Exception_MissingRow(array('table' => 'stream', 'criteria' => compact('publisherId', 'streamName')));
}
$rules = Streams_Rule::select('*')->where(array('ofUserId' => $user->id, 'publisherId' => $publisherId, 'streamName' => $streamName))->fetchDbRows(null, '', 'ordinal');
$types = Q_Config::get('Streams', 'types', $stream->type, 'messages', array());
if ($subscribed !== 'no') {
// update rules
while ($item = array_pop($items)) {
// join "grouped" message types to $items
foreach ($types as $type => $msg) {
if ($msg['title'] == $item['filter']->labels and $type != $item['filter']->types) {
$items[] = (object) array('deliver' => $item->deliver, 'filter' => array('types' => $type, 'labels' => $msg['title'], 'notifications' => $item['filter']->notifications));
}
}
if (!($rule = array_pop($rules))) {
$rule = new Streams_Rule();
$rule->ofUserId = $user->id;
$rule->publisherId = $publisherId;
$rule->streamName = $streamName;
$rule->relevance = 1;
}
$rule->filter = Q::json_encode($item['filter']);
$rule->deliver = Q::json_encode($item['deliver']);
$rule->save();
}
}
foreach ($rules as $rule) {
$rule->remove();
}
$streams_subscription = new Streams_Subscription();
$streams_subscription->streamName = $streamName;
$streams_subscription->publisherId = $publisherId;
$streams_subscription->ofUserId = $user->id;
$streams_subscription->filter = Q::json_encode(array());
$streams_subscription->retrieve();
$streams_participant = new Streams_Participant();
$streams_participant->publisherId = $publisherId;
$streams_participant->streamName = $streamName;
$streams_participant->userId = $user->id;
$streams_participant->state = 'participating';
$streams_participant->reason = '';
$streams_participant->retrieve();
$streams_participant->subscribed = $subscribed;
$streams_participant->save();
if ($subscribed === 'yes') {
$stream->subscribe(array('skipRules' => true));
} else {
$stream->unsubscribe();
}
}
/**
* If the user is subscribed, get the Streams_Subscription object.
* Otherwise, returns false, or null if the user isn't logged in.
* @param {string} $ofUserId Defaults to logged-in user's id, if any.
* @return {Streams_Subscription|false|null}
*/
function subscription($ofUserId = null)
{
if (!isset($ofUserId)) {
$user = Users::loggedInUser();
if (!$user) {
return null;
}
$ofUserId = $user->id;
}
$s = new Streams_Subscription();
$s->publisherId = $this->publisherId;
$s->streamName = $this->name;
$s->ofUserId = $ofUserId;
return $s->retrieve();
}
/**
* Subscribe to one or more streams, to start receiving notifications.
* Posts "Streams/subscribe" message to the streams.
* Also posts "Streams/subscribed" messages to user's "Streams/participating" stream.
* If options are not given check the subscription templates:
* 1. generic publisher id and generic user
* 2. exact publisher id and generic user
* 3. generic publisher id and exact user
* default is to subscribe to ALL messages.
* If options are supplied - skip templates and use options.
* Using subscribe if subscription is already active will modify existing
* subscription - change type(s) or modify notifications
* @method subscribe
* @static
* @param {string} $asUserId The id of the user that is joining. Pass null here to use the logged-in user's id.
* @param {string} $publisherId The id of the user publishing all the streams
* @param {array} $streams An array of Streams_Stream objects or stream names
* @param {array} [$options=array()]
* @param {array} [$options.filter] optional array with two keys
* @param {array} [$options.filter.types] array of message types, if this is empty then subscribes to all types
* @param {array} [$options.filter.notifications=0] limit number of notifications, 0 means no limit
* @param {datetime} [$options.untilTime=null] time limit, if any for subscription
* @param {array} [$options.rule=array()] optionally override the rule for new subscriptions
* @param {array} [$options.rule.deliver=array('to'=>'default')] under "to" key,
* named the field under Streams/rules/deliver config, which will contain the names of destinations,
* which can include "email", "mobile", "email+pending", "mobile+pending"
* @param {datetime} [$options.rule.readyTime] time from which user is ready to receive notifications again
* @param {array} [$options.rule.filter] optionally set a filter for the rules to add
* @param {boolean} [$options.skipRules] if true, do not attempt to create rules for new subscriptions
* @param {boolean} [$options.skipAccess] if true, skip access check for whether user can join and subscribe
* @return {array} An array of Streams_Participant rows from the database.
*/
static function subscribe($asUserId, $publisherId, $streams, $options = array())
{
$streams2 = self::_getStreams($asUserId, $publisherId, $streams);
$streamNames = array();
foreach ($streams2 as $s) {
$streamNames[] = $s->name;
}
if (empty($options['skipAccess'])) {
self::_accessExceptions($streams2, $streamNames, 'join');
}
$participants = Streams::join($asUserId, $publisherId, $streams2, array('subscribed' => true, 'noVisit' => true, 'skipAccess' => Q::ifset($options, 'skipAccess', false)));
$shouldUpdate = false;
if (isset($options['filter'])) {
$filter = Q::json_encode($options['filter']);
$shouldUpdate = true;
}
$db = Streams_Subscription::db();
if (isset($options['untilTime'])) {
$untilTime = $db->toDateTime($options['untilTime']);
$shouldUpdate = true;
}
$subscriptions = array();
$rows = Streams_Subscription::select('*')->where(array('publisherId' => $publisherId, 'streamName' => $streamNames, 'ofUserId' => $asUserId))->fetchAll(PDO::FETCH_ASSOC);
foreach ($rows as $row) {
$sn = $row['streamName'];
$subscriptions[$sn] = $row;
}
$messages = array();
$pMessages = array();
$streamNamesMissing = array();
$streamNamesUpdate = array();
foreach ($streamNames as $sn) {
$messages[$publisherId][$sn] = array('type' => 'Streams/subscribe');
$pMessages[] = array('type' => 'Streams/subscribed', 'instructions' => array('publisherId' => $publisherId, 'streamName' => $sn));
if (empty($subscriptions[$sn])) {
$streamNamesMissing[] = $sn;
continue;
}
if ($shouldUpdate) {
$streamNamesUpdate[] = $sn;
}
}
if ($streamNamesUpdate) {
Streams_Subscription::update()->set(compact('filter', 'untilTime'))->where(array('publisherId' => $publisherId, 'streamName' => $streamNamesUpdate, 'ofUserId' => $asUserId))->execute();
}
$rules = array();
if ($streamNamesMissing) {
$types = array();
foreach ($streamNamesMissing as $sn) {
$stream = $streams2[$sn];
$types[$stream->type][] = $sn;
}
$subscriptionRows = array();
$ruleRows = array();
foreach ($types as $type => $sns) {
// insert subscriptions
if (!isset($filter) or !isset($untilTime)) {
$templates = Streams_Subscription::select('*')->where(array('publisherId' => array('', $publisherId), 'streamName' => $type . '/', 'ofUserId' => array('', $asUserId)))->fetchAll(PDO::FETCH_ASSOC);
$template = null;
foreach ($templates as $t) {
if (!$template or $template['publisherId'] == '' and $t['publisherId'] !== '' or $template['userId'] == '' and $t['userId'] !== '') {
$template = $t;
}
}
}
if (!isset($filter)) {
$filter = Q::json_encode($template ? Q::json_decode($template['filter']) : Streams_Stream::getConfigField($type, array('subscriptions', 'filter'), array("types" => array("^(?!(Users/)|(Streams/)).*/", "Streams/relatedTo", "Streams/chat/message"), "notifications" => 0)));
}
if (!isset($untilTime)) {
$untilTime = ($template and $template['duration'] > 0) ? new Db_Expression("CURRENT_TIMESTAMP + INTERVAL {$template['duration']} SECOND") : null;
}
foreach ($sns as $sn) {
$subscriptions[$sn] = $subscriptionRows[] = new Streams_Subscription(array('publisherId' => $publisherId, 'streamName' => $sn, 'ofUserId' => $asUserId, 'untilTime' => $untilTime, 'filter' => $filter));
}
if (!empty($options['skipRules'])) {
continue;
}
// insert up to one rule per subscription
$rule = null;
if (isset($options['rule'])) {
$rule = $options['rule'];
if (isset($rule['readyTime'])) {
$rule['readyTime'] = $db->toDateTime($rule['readyTime']);
}
if (isset($rule['filter']) and is_array($rule['filter'])) {
$rule['filter'] = Q::json_encode($rule['filter']);
}
if (isset($rule['deliver']) and is_array($rule['deliver'])) {
$rule['deliver'] = Q::json_encode($rule['deliver']);
}
}
if (!isset($rule)) {
$templates = Streams_Rule::select('*')->where(array('ofUserId' => array('', $asUserId), 'publisherId' => array('', $publisherId), 'streamName' => $type . '/', 'ordinal' => 1))->fetchAll(PDO::FETCH_ASSOC);
foreach ($templates as $t) {
if (!$rule or $rule['userId'] == '' and $t['userId'] !== '' or $rule['publisherId'] == '' and $t['publisherId'] !== '') {
$rule = $t;
}
}
}
if (!isset($rule)) {
$rule = array('deliver' => '{"to": "default"}', 'filter' => '{"types": [], "labels": []}');
}
if ($rule) {
$rule['ofUserId'] = $asUserId;
$rule['publisherId'] = $publisherId;
if (empty($rule['readyTime'])) {
$rule['readyTime'] = new Db_Expression("CURRENT_TIMESTAMP");
}
foreach ($sns as $sn) {
$row = $rule;
$row['streamName'] = $sn;
$row['ordinal'] = 1;
$row['filter'] = '';
$rules[$sn] = $ruleRows[] = $row;
$messages[$publisherId][$sn]['instructions'] = Q::json_encode(array('rule' => $row));
}
}
}
Streams_Subscription::insertManyAndExecute($subscriptionRows);
Streams_Rule::insertManyAndExecute($ruleRows);
}
foreach ($streamNames as $sn) {
$subscription = $subscriptions[$sn];
$stream = $streams2[$sn];
// skip error testing for rule save BUT inform node.
// Node can notify user to check the rules
Q_Utils::sendToNode(array("Q/method" => "Streams/Stream/subscribe", "subscription" => Q::json_encode($subscription), "stream" => Q::json_encode($stream->toArray()), "rule" => isset($rules[$sn]) ? Q::json_encode($rules[$sn]) : null));
}
Streams_Message::postMessages($asUserId, $messages, true);
Streams_Message::postMessages($asUserId, array($asUserId => array('Streams/participating' => $pMessages)), true);
return $participants;
}
