/woka.php

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<?php

//Following constants are the DEBUG levels
define( 'DEBUG_OFF', 0 );
define( 'DEBUG_CATCHS', 1 ); //Only messages from try/catch blocks will log
define( 'DEBUG_FULL', 2 ); //all info messages will be logged


if (isset( $argv [0] )) {
    define( 'CONSOLE', 1 ); //constant indicates its running from console to index.php
    //--------------------------------------
    //Whith this we include the zend context
    require_once ('index.php');

    NotificationsWorker::getInstance();
}

class NotificationsWorker {
    const MAX_EXECUTION_TIME                 = 3660;
    const WORKER_FUNCTION_SEND_NOTIFICATIONS = 'sendNotifications';
    const MAX_JOBS                           = 3660;
    const MAX_THUMBS_TO_SHOW                 = 2;

    private $shutdown; // this variable is set by the signal handler when it recieves SIGTERM


    //maps the type of the incoming message with the DB types
    private static $typeMapping = array (
        'text'       => 'notes',
        'video'      => 'messages',
        'image'      => 'messages',
        'assignment' => 'assignments',
        'system'     => 'messages',
        'comment'    => 'replies',
        'alert'      => 'alerts',
        'grade'      => 'messages',
        'poll'       => 'messages',
        'quiz'       => 'quizzes',
    );

    private $worker;
    private static $starttime;
    private static $jobcount;
    private static $replyTo = NOTIFY_EMAIL;
    private static $log;
    private static $msgID = 0;
    private static $msgType = '';
    private static $expectedWorkersNumber;

    //self::logActions is incharge of logging according to DEBUG level


    /**
     * Setup the Notifications worker object
     *
     */
    private function __construct() {
        // install signal handler
        declare(ticks = 1)
            ;
        pcntl_signal( SIGTERM, array ($this, "sig_handler" ) );
        $this->shutdown = FALSE;

       self::$starttime = time();
       self::$jobcount=0;
        try {
            $this->worker = new GearmanWorker();
            $gearman_obj = new Zend_Config_Ini(APPLICATION_PATH . '/configs/application.ini', 'gearman');
            $gearman_job_server_conf = $gearman_obj->get('job_server')->toArray();
            $added= $this->worker->addServer($gearman_job_server_conf['host'], $gearman_job_server_conf['port']);
            $gearman_workers_conf = $gearman_obj->get('workers')->toArray();
            self::$expectedWorkersNumber = $gearman_workers_conf['expected_worker_count'];

            $this->worker->addFunction( 'sendNotifications', 'NotificationsWorker::send_notifications' );

        //$this->worker->setOptions(GEARMAN_WORKER_NON_BLOCKING,TRUE); // causes the function GearmanWorker::work() to not block the caller. However, it also causes the worker to not process any jobs! is this a bug?
        } catch ( exception $e ) {
            self::logActions( "\n" . '__construct:ERROR on setup ' . $e->getMessage(), DEBUG_CATCHS );
            self::writeLog( 'c_' );
        }

        try {
            do {
                // check to see if we have recieved a SIGTERM signal
                if ($this->shutdown) {
                    self::logActions( "Recieved kill command. Exiting gracefully", DEBUG_FULL );
                    self::writeLog();
                    exit( 0 );
                }

                // check to see if we have been running too long
                $runningtime = time() -self::$starttime;
                if ($runningtime > self::MAX_EXECUTION_TIME ) {
                    self::logActions( "exiting after $runningtime seconds", DEBUG_FULL );
                    self::writeLog();

                    // ensure that enough workers are running then exit gracefully
                    self::watchAndRaiseWorkers();
                    exit( 0 );
                }

                 // check to see if we have executed too many jobs
                if (self::$jobcount > self::MAX_JOBS ) {
                    self::logActions( "exiting after running ".self::$jobcount.' jobs ', DEBUG_FULL );
                    self::writeLog();

                    // ensure that enough workers are running then exit gracefully
                    self::watchAndRaiseWorkers();
                    exit( 0 );
                }

                $this->worker->work();

                if (! ($this->worker->returnCode() == GEARMAN_IO_WAIT || $this->worker->returnCode() == GEARMAN_NO_JOBS || $this->worker->returnCode() == 0)) {
                    self::logActions( "an error ocurred " . $this->worker->returnCode(), DEBUG_FULL );
                    self::writeLog();
                }

            } while ( TRUE );

        } catch ( exception $e ) {
            //self::sendWarningEmail();
            self::logActions( "\n" . '__contruct:**** I Finished Working **** ' . $e->getMessage(), DEBUG_CATCHS );
            self::writeLog( 'cw_' );
        }
    }

    function __destruct() {
        try {
           //self::sendWarningEmail();
            self::logActions( "\n ---- I Died!!! ----\n", DEBUG_CATCHS );
            self::writeLog( 'd_' );
        } catch ( exception $e ) {
            //do nothing
        }
    }

    /**
     *
     * @return object GearmanHelper instance
     */
    static function getInstance() {
        static $instance;
        $instance = new self();
        return $instance;
    }

    /**
     * Main function to process and send correct notifications for an action
     * @param array $job serialized object from Gearman call
     * @return
     */
    public static function send_notifications($job) {
        try {
            if (empty( self::$starttime )) {
                self::$starttime = time();
            }
            if(empty(self::$jobcount)){
                self::$jobcount=0;
            }
            self::$jobcount++;

            self::logActions( '-------------------------------' . "\n" . 'NotificationsWorker::send_notifications' . "\n", DEBUG_CATCHS );
            $myProccessId = getmypid(); //Get self proccess ID
            self::logActions( "\n" . 'send_notifications:: Proccess ID : ' . $myProccessId . "\n\n", DEBUG_CATCHS );

            try {
                $workerObject = $job->workload(); //will bring the desired message
                $workerArray = unserialize( $workerObject );
                $errors=error_get_last();

                if(isset($errors['type']) && $errors['type']==2 && isset($errors['message']) && strstr($errors['message'],'unserialize') ){
                    // fix the SimpleXML bug
                    $tokens=explode(';',$workerObject);
                    foreach($tokens as $i=>$token){
                        if($token=='O:16:"SimpleXMLElement":1:{i:0'){
                                $tokens[$i+2]=substr($tokens[$i+2],1);
                                unset($tokens[$i]);
                        }
                    }
                    $workerObject=implode(';',$tokens);
                    $workerArray = unserialize( $workerObject );
                }

                if(empty($workerArray)){
                    trigger_error('Unable to process job '.$job->handle());
                    trigger_error($workerObject);
                    return;
                }
                $selectedReceivers = $workerArray ['selected_receivers'];
                $accountInfo = $workerArray ['account_info'];
                $messageData = $workerArray ['message_data'];
                self::$msgID = isset($messageData['message_id']) ? $messageData['message_id']: null;
                self::$msgType = $messageData ['type'];
            } catch ( exception $e ) {
                self::logActions( "\n" . 'send_notifications: ERROR: Constructing Notification: ' . $e->getMessage() . "\n", DEBUG_CATCHS );
            }

            //--------------------------------
            // Log some Data
            $initialLogMsg = '$workerArray: ' . print_r( $workerArray, true ) . "\n";
            self::logActions( $initialLogMsg, DEBUG_FULL );

            //verify that a connection to the database is active
            self::ensureActiveDBConnection();

            try {
                //Call Main proccess
                self::process_notifications( $workerArray, $selectedReceivers, $accountInfo, $messageData );
            } catch ( exception $e ) {
                self::logActions( "\n" . 'FAILURE: MSGID: ' . self::$msgID . ', MSGTYPE: ' . self::$msgType, DEBUG_CATCHS );
                self::logActions( "\n" . 'send_notifications: ERROR processing notifications ' . $e->getMessage(), DEBUG_CATCHS );
                self::writeLog();
            }
        } catch ( exception $e ) {
            //--------------------------------
            // Log the Exception
            self::logActions( "\n" . 'send_notifications: ERROR: An Exception was thrown: ' . $e->getMessage(), DEBUG_CATCHS );
            self::writeLog();
        }
    }

    private static function ensureActiveDBConnection(){
        $write_db_registry_name = 'zendmodo_db';
        $readonly_db_registry_name = 'zendmodo_readonly_db';

        $databases = Zend_Registry::get('databases');

        $db=NULL;
        if (Zend_Registry::isRegistered($write_db_registry_name)) {
            $db = Zend_Registry::get($write_db_registry_name);
        }
        if (empty($db)) {
            $db_obj = $databases->db->get('zendmodo');

            if(empty($db_obj)){
                throw new Exception("no configuration defined for db");
            }

            $db = Zend_Db::factory($db_obj->adapter, $db_obj->config->toArray());
            if (empty($db)) {
                throw new Exception("failed to connect to db using configuration");
            } else {
                Zend_Registry::set($write_db_registry_name, $db);
            }
        }

        try{
            $now=$db->fetchOne('select now()');
        }catch(Zend_Db_Statement_Exception $e){
            if($e->getMessage()=="SQLSTATE[HY000]: General error: 2006 MySQL server has gone away"){
                trigger_error('MySQL server has gone away. Reconnecting...',E_USER_WARNING);
                //try to reconnect
                $db->closeConnection();
                $db->getConnection();
                $now=$db->fetchOne('select now()');
                trigger_error('Reconnected to database',E_USER_NOTICE); //write this message to the log so that we know when successful reconnects happen.
            }else{
                throw $e; // some other exception happened that we arent going to handle here.
            }
        }

        // check and reconnect to readonly database
        $readonly_db=NULL;
        if (Zend_Registry::isRegistered($readonly_db_registry_name)) {
            $readonly_db = Zend_Registry::get($readonly_db_registry_name);
        }
        if (empty($readonly_db)) {
            $readonly_db_obj = $databases->db->get('zendmodo_readonly');

            if(empty($readonly_db_obj)){
                throw new Exception("no configuration defined for readonly db");
            }

            $readonly_db = Zend_Db::factory($readonly_db_obj->adapter, $readonly_db_obj->config->toArray());
            if(empty($readonly_db)){
                throw new Exception("failed to connect to readonly db using configuration");
            }else{
                Zend_Registry::set($readonly_db_registry_name, $readonly_db);
            }
        }

        try{
            $now=$readonly_db->fetchOne('select now()');
        }catch(Zend_Db_Statement_Exception $e){
            if($e->getMessage()=="SQLSTATE[HY000]: General error: 2006 MySQL server has gone away"){
                trigger_error('Readonly MySQL server has gone away. Reconnecting...',E_USER_WARNING);
                //try to reconnect
                $readonly_db->closeConnection();
                $readonly_db->getConnection();
                $now=$readonly_db->fetchOne('select now()');
                trigger_error('Reconnected to readonly database',E_USER_NOTICE); //write this message to the log so that we know when successful reconnects happen.
            }else{
                throw $e; // some other exception happened that we arent going to handle here.
            }
        }
    }

    /**
     * Aux function to process and send correct notifications for an action
     * @param array $workerArray unserialized object from Gearman call
     * @param array $selectedReceivers the receivers of the message
     * @param array $accountInfo info from the sender
     * @param array $messageData the message data to be send
     * @return
     */
    private function process_notifications($workerArray, $selectedReceivers, $accountInfo, $messageData) {
        $allRecipients = array ();
        $membersOfGroup = array ();
        $parentsOfGroup = array ();
        $adminRecipients = array();
        $parentsGroups = array();

        try {
            //This case if for new restricted messages to only receivers that have commented
            if (isset( $selectedReceivers ['notification_receivers'] )) {
                self::logActions( '$selectedReceivers[\'notification_receivers\'] Getting through the first if', DEBUG_FULL );

                try {
                    foreach ( $selectedReceivers ['notification_receivers'] as $receiver => $receiverId ) {
                        array_push( $allRecipients, $receiverId );
                    }

                    //check if this user that answered is an admin
                    if (is_array( $selectedReceivers ['locations'] )) {
                        foreach ( $selectedReceivers ['locations'] as $location ) {
                            $inst_admins = array();
                            if ($location ['type'] == 'school' || $location ['type'] == 'school_vip') {
                                $inst_admins = Schools::getInstance()->getAllSchoolAdmins( $location ['id'] );
                                $messageData['posted_in_school'] = 1;
                            }
                            if ($location ['type'] == 'district' || $location ['type'] == 'district_vip') {
                                $inst_admins = Districts::getInstance()->getDistrictMembers( $location ['id'] ,false,'admins','',true);
                            }

                            foreach($inst_admins as $admin)
                            {
                                if(isset($admin['admin_notifications']) && !empty($admin['admin_notifications']) && in_array($admin ['user_id'],$selectedReceivers ['notification_receivers']))
                                {
                                    array_push( $adminRecipients, $admin ['user_id'] );
                                }
                            }
                            unset( $inst_admins );
                        }
                    }

                } catch ( exception $e ) {
                    self::logActions( "\n" . 'FAILURE: MSGID: ' . self::$msgID . ', MSGTYPE: ' . self::$msgType, DEBUG_CATCHS );
                    self::logActions( "\n" . 'process_notifications:ERROR creating receiver list ' . $e->getMessage(), DEBUG_CATCHS );
                }
            } //This is for direct messages to get notification when they answered my message,etc
            else if (is_array( $selectedReceivers ['people'] ) && count( $selectedReceivers ['people'] ) == 1 &&
                (! is_array( $selectedReceivers ['locations'] ) || count( $selectedReceivers ['locations'] ) == 0) && $messageData ['type'] == 'comment') {
                self::logActions( 'process_notifications: Going through direct reply', DEBUG_FULL );
                try {
                    //do direct reply answer
                    $originalSenderInfo = Messages::getInstance()->getSenderInfoByMessageId( $messageData ['comment_to'] );
                    if ( $originalSenderInfo['send_notifications'] != '0' ){
                        if ($originalSenderInfo ['user_id'] == $accountInfo ['user_id'])
                            $newReceiver = $selectedReceivers ['people'] [0];
                        else
                            $newReceiver = $originalSenderInfo ['user_id'];

                        array_push( $allRecipients, $newReceiver );
                    }
                } catch ( exception $e ) {
                    self::logActions( "\n" . 'FAILURE: MSGID: ' . self::$msgID . ', MSGTYPE: ' . self::$msgType, DEBUG_CATCHS );
                    self::logActions( "\n" . 'process_notifications:ERROR creating direct reply receiver ' . $e->getMessage(), DEBUG_CATCHS );
                }
            } //This is the normal case to fetch all receivers on groups, individuals, etc
            else { //THERE COULD BE A PROBLEM HERE IF notifications_receivers is empty, or other conditions default to "else" when its not expected
                try {
                    self::logActions( 'process_notifications: Going through normal case', DEBUG_FULL );
                    try {
                        //search recipients
                        $possible_students_tmp = array ();
                        foreach ( $selectedReceivers ['people'] as $recipient => $userId ) {
                            array_push( $allRecipients, $userId );
                            array_push( $possible_students_tmp, $userId );
                        }
                        //Parents notifications on assignments, find possible parents for this users
                        self::logActions( 'process_notifications: type ' . $messageData ['type'], DEBUG_FULL );
                        if ($messageData ['type'] == 'assignment' || $messageData ['type'] == 'alert') {
                            $parents_ids = ParentsStudents::getInstance()->getParentsForStudents( $possible_students_tmp, true );
                            self::logActions( 'process_notifications: parent ids ' . print_r( $parents_ids, true ), DEBUG_FULL );
                            $allRecipients = array_merge( $allRecipients, $parents_ids );
                        }
                    } catch ( exception $e ) {
                        self::logActions( "\n" . 'FAILURE: MSGID: ' . self::$msgID . ', MSGTYPE: ' . self::$msgType, DEBUG_CATCHS );
                        self::logActions( "\n" . 'process_notifications:ERROR with People array ' . $e->getMessage(), DEBUG_CATCHS );
                    }

                    try {
                        //adds recipients from groups
                        if (is_array( $selectedReceivers ['locations'] )) {
                            foreach ( $selectedReceivers ['locations'] as $location ) {
                                if ($location ['type'] == 'group') {
                                    $tmpUserIds = Groups::getInstance()->getGroupMembersToNotify( $location ['id'] );
                                    $tmpName = Groups::getInstance()->getGroup( $location ['id'], false, true );

                                    foreach ( $tmpUserIds as $user_id ) {
                                        array_push( $allRecipients, $user_id );
                                        array_push( $membersOfGroup, array ($user_id => $tmpName ['title'] ) );
                                        $messageData['parent_group_title'] = $tmpName['parent_group_title'];
                                    }

                                    //Parents notifications on assignments, find possible parents for this groups
                                    self::logActions( 'process_notifications: group type ' . $messageData ['type'], DEBUG_FULL );
                                    if ( $messageData ['type'] == 'assignment' || $messageData ['type'] == 'alert') {
                                        $parents_ids = ParentsStudents::getInstance()->getParents( $location ['id'], true );
                                        self::logActions( 'process_notifications: group parent ids ' . print_r( $parents_ids, true ), DEBUG_FULL );
                                        if (count( $parents_ids )) {
                                            foreach ( $parents_ids as $parent ) {
                                                array_push( $allRecipients, $parent ['parent_id'] );

                                                if (! array_key_exists( $parent ['parent_id'], $parentsOfGroup ))
                                                    $parentsOfGroup [$parent ['parent_id']] = $tmpName ['title'];
                                            }
                                        }
                                    }
                                }
                                if ($location ['type'] == 'group_parents')
                                {
                                    $tmpName = Groups::getInstance()->getGroup( $location ['id'] );

                                    //Parents notifications on assignments, find possible parents for this groups
                                    self::logActions( 'process_notifications: group type ' . $messageData ['type'], DEBUG_FULL );
                                    if ($messageData ['type'] == 'text' || $messageData ['type'] == 'comment' || $messageData ['type'] == 'assignment' || $messageData ['type'] == 'alert') {
                                        $parents_ids = ParentsStudents::getInstance()->getParents( $location ['id'], true );
                                        self::logActions( 'process_notifications: group parent ids ' . print_r( $parents_ids, true ), DEBUG_FULL );
                                        if (count( $parents_ids )) {
                                            foreach ( $parents_ids as $parent ) {
                                                array_push( $allRecipients, $parent ['parent_id'] );

                                                if (! array_key_exists( $parent ['parent_id'], $parentsOfGroup ))
                                                    $parentsOfGroup [$parent ['parent_id']] = $tmpName ['title'];
                                                if (! array_key_exists( $parent ['parent_id'], $parentsGroups ))
                                                    $parentsGroups [$parent ['parent_id']] = $location ['id'];
                                            }
                                        }
                                    }
                                }
                                if ($location ['type'] == 'all-groups')
                                {
                                   $groups = Groups::getInstance()->getUserGroups($accountInfo['user_id'],false,false);

                                    foreach( $groups as $group)
                                    {
                                        if ($group['read_only'] == 1) {
                                            // Do not send email notifications to a group that the user
                                            // cannot post to.
                                            continue;
                                        }
                                        
                                        $group_id = $group['group_id'];
                                        $tmpUserIds = Groups::getInstance()->getGroupMembersToNotify( $group_id );
                                        $tmpName = Groups::getInstance()->getGroup( $group_id, false, true );

                                        foreach ( $tmpUserIds as $user_id ) {
                                            array_push( $allRecipients, $user_id );
                                            array_push( $membersOfGroup, array ($user_id => $tmpName ['title']) );
                                            $messageData['parent_group_title'] = $tmpName['parent_group_title'];
                                        }

                                        //Parents notifications on assignments, find possible parents for this groups
                                        self::logActions( 'process_notifications: group type ' . $messageData ['type'], DEBUG_FULL );
                                        if ( $messageData ['type'] == 'assignment' || $messageData ['type'] == 'alert') {
                                            $parents_ids = ParentsStudents::getInstance()->getParents( $location ['id'], true );
                                            self::logActions( 'process_notifications: group parent ids ' . print_r( $parents_ids, true ), DEBUG_FULL );
                                            if (count( $parents_ids )) {
                                                foreach ( $parents_ids as $parent ) {
                                                    array_push( $allRecipients, $parent ['parent_id'] );

                                                    if (! array_key_exists( $parent ['parent_id'], $parentsOfGroup ))
                                                        $parentsOfGroup [$parent ['parent_id']] = $tmpName ['title'];
                                                }
                                            }
                                        }
                                    }
                                }

                                //Will add recipients from institution admins
                                $inst_admins = array();
                                if ($location ['type'] == 'school' || $location ['type'] == 'school_vip') {
                                    $inst_admins = Schools::getInstance()->getAllSchoolAdmins( $location ['id'] );
                                     $messageData['posted_in_school'] = 1;
                                }
                                if ($location ['type'] == 'district' || $location ['type'] == 'district_vip') {
                                    $inst_admins = Districts::getInstance()->getDistrictMembers( $location ['id'] ,false,'admins','',true);
                                }

                                foreach($inst_admins as $admin)
                                {
                                    if(isset($admin['admin_notifications']) && !empty($admin['admin_notifications']))
                                    {
                                        array_push( $allRecipients, $admin ['user_id'] );
                                        array_push( $adminRecipients, $admin ['user_id'] );
                                    }
                                }
                                unset( $inst_admins );
                            }
                            foreach ( $parentsOfGroup as $key => $parent ) {
                                self::logActions( 'process_notifications: group parents ' . print_r( array ($key => $parent ), true ), DEBUG_FULL );
                                //we insert the parent as a member of the group to hack the subject behaviour
                                array_push( $membersOfGroup, array ($key => $parent ) );
                            }
                            self::logActions( 'process_notifications: group members ' . print_r( $parentsOfGroup, true ), DEBUG_FULL );
                        } else {
                            self::logActions( '$selectedReceivers[\'locations\'] is not an array... Workflow ended unexpectedly', DEBUG_FULL );
                        }
                    } catch ( exception $e ) {
                        self::logActions( "\n" . 'FAILURE: MSGID: ' . self::$msgID . ', MSGTYPE: ' . self::$msgType, DEBUG_CATCHS );
                        self::logActions( "\n" . 'process_notifications:ERROR adding recipients from groups ' . $e->getMessage(), DEBUG_CATCHS );
                    }
                } catch ( exception $e ) {
                    self::logActions( "\n" . 'FAILURE: MSGID: ' . self::$msgID . ', MSGTYPE: ' . self::$msgType, DEBUG_CATCHS );
                    self::logActions( "\n" . 'process_notifications:ERROR on Normal Case ' . $e->getMessage(), DEBUG_CATCHS );
                }
            }
            //removes repeated recipients
            $uniqueRecipients = array_unique( $allRecipients );
        } catch ( exception $e ) {
            self::logActions( "\n" . 'FAILURE: MSGID: ' . self::$msgID . ', MSGTYPE: ' . self::$msgType, DEBUG_CATCHS );
            self::logActions( "\n" . 'process_notifications:ERROR general recipients fail ' . $e->getMessage(), DEBUG_CATCHS );
        }

        //--------------------------------
        // Log some Data
        self::logActions( '$uniqueRecipients: ' . print_r( $uniqueRecipients, true ), DEBUG_FULL );
        self::logActions( '$membersOfGroup: ' . print_r( $membersOfGroup, true ), DEBUG_FULL );

        try {
            //check settings for recipients
            //PREVENT ERROR ON EMPTY ARRAY
            if(isset($uniqueRecipients) && !empty($uniqueRecipients) && count($uniqueRecipients) > 0)
            {
                $notificationsSettings = Notifications::getInstance()->getNotificationsForUsers( $uniqueRecipients );
            }
            else
            {
                $notificationsSettings = array();
                self::logActions( "\n" . 'process_notifications:ERROR: empty uniqueRecipients: ' , DEBUG_FULL);
            }
        } catch ( exception $e ) {
            //--------------------------------
            // Log the Exception
            self::logActions( "\n" . 'process_notifications:ERROR: on getNotificationsForUsers: ' . $e->getMessage(), DEBUG_CATCHS );
            $notificationsSettings = array ();
        }

        try {
            //check if incoming type is correct in db
            $tmpType = self::$typeMapping [$workerArray['message_data']['type']];

            //avoid joing group type
            if (self::isJoinGruoup( $messageData ) == false) {
                //call functions for notifications
                foreach ( $notificationsSettings as $notification ) {
                    $recipientInfo = Users::getInstance()->getUserInfoWithSubdomain( $notification ['user_id'] );
                    if ($recipientInfo['type'] == 'PARENT')
                    {
                        $recipientInfo['parent_groups'] = $parentsGroups;
                    }
                    $contents = self::prepareSubject( $messageData, $accountInfo, $recipientInfo, $membersOfGroup );
                    $contents['group_id'] = $tmpName['group_id'];

                    self::logActions( "\n" . 'Attempt to send with IF params: ' . $notification [$tmpType] . ' | ' . $accountInfo ['user_id'] . ' | ' . $notification ['user_id'], DEBUG_FULL);
                    $contents['isDirect'] = self::isDirectMessage( $notification, $selectedReceivers );
                    $is_admin_notification = self::isAdminNotification( $notification, $messageData, $adminRecipients );
                    self::logActions( "\n" . 'adminRecipients ' . print_r($adminRecipients, true), DEBUG_FULL);

                    //Will send if notification is valid and not admin, or is direct message, or admin settings are correct
                    if ((($notification [$tmpType] == 1 && !in_array($notification['user_id'],$adminRecipients)) || $contents ['isDirect'] || $is_admin_notification) && ($accountInfo ['user_id'] != $notification ['user_id'])) {
                        //call service notification func
                        switch ($notification ['type']) {
                            case 'TWITTER':
                                self::postOnTwitter( $notification, $contents );
                                break;

                            case 'EMAIL':
                                $messageData['is_admin_notification'] = $is_admin_notification;
                                self::sendEmail( $contents, $recipientInfo, $messageData, $workerArray ['server_name'], $notification, $accountInfo );
                                break;

                            case 'SMS':
                                self::sendSms( $notification, $contents, $recipientInfo );
                                break;
                            default :
                                break;
                        }
                    }
                }
            } else {
                self::logActions( "\n" . 'Did not sent message - was join group', DEBUG_FULL );
            }
        } catch ( exception $e ) {
            self::logActions( "\n" . 'FAILURE: MSGID: ' . self::$msgID . ', MSGTYPE: ' . self::$msgType, DEBUG_CATCHS );
            self::logActions( "\n" . 'process_notifications:ERROR on for each notificationsSettings ' . $e->getMessage(), DEBUG_CATCHS );
        }

        self::logActions( "\n" . 'NotificationsWorker::Finished Logging' . "\n" . '-------------------------------' . "\n", DEBUG_CATCHS );

        self::writeLog();

        try {
            //Trying to free memory, cant do it outside here becuase reference is no good
            //unset seems to not force garbage collection according to the manual,
            $notificationsSettings = array ();
            $allRecipients = array ();
            $membersOfGroup = array ();
            self::$log = NULL;
            unset( $notificationsSettings );
            unset( $allRecipients );
            unset( $membersOfGroup );

        } catch ( exception $e ) {
            //EMPTY CATCH, CANT LOG ANYTHING HERE, LOGGING ERROR
        }

    }

    private function getSalutationName($recipient_language, $first_name, $last_name, $user_type, $title = 'NONE')
    {
        $registryKey = 'th-' . $recipient_language;

        if (Zend_Registry::isRegistered($registryKey)) {
            $translator = Zend_Registry::get($registryKey);
        } else {
            $translator = TranslationHelper::getInstance(PATH2_LANGUAGES . 'email-subjects.tmx', $recipient_language);
            Zend_Registry::set($registryKey, $translator);
        }

        $salutation_name = ucwords($first_name);

        switch($user_type)
        {
            case 'STUDENT':
                // if mbstring extension is installed, use it to handle multibyte strings
                if (function_exists('mb_substr')) {
                    $last_initial = mb_substr($last_name, 0, 1, 'UTF-8');
                } else {
                    $last_initial = substr($last_name, 0, 1);
                }

                $salutation_name = ucwords($first_name) . ' ' . strtoupper($last_initial) . '.';
                break;

            case 'TEACHER':
                $new_title = ($title == 'NONE') ? $first_name : $translator->_($title) . '.';

                $salutation_name = ucwords(strtolower($new_title)) . ' ' . ucwords($last_name);
                break;
        }

        return $salutation_name;
    }

    private function getSimpleSentTo($language, $recipient_id, $message_id, $message_recipients = null)
    {
        $to = null;

        if (!$message_recipients)
        {
            $message_recipients = Messages::getInstance()->getMessageRecipients($message_id);
        }

        foreach ($message_recipients as $recipient)
        {
            if ('group' == trim(ArrayHelper::elem($recipient, 'posted_in')))
            {
                if (UsersGroups::getInstance()->userIsMemberOfGroup($recipient_id, $recipient['posted_in_id']))
                {
                    $group = Groups::getInstance()->find($recipient['posted_in_id'])->current()->toArray();
                    $to = ArrayHelper::elem($group, 'title');
                }
            }

            if ($to)
            {
                break;
            }
        }

        $registryKey = 'th-' . $recipient_language;

        if (Zend_Registry::isRegistered($registryKey)) {
            $translator = Zend_Registry::get($registryKey);
        } else {
            $translator = TranslationHelper::getInstance(PATH2_LANGUAGES . 'email-subjects.tmx', $recipient_language);
            Zend_Registry::set($registryKey, $translator);
        }

        if ($to)
        {
            $to = $translator->_('reply-to-group') . ' ' . $to;
        }
        else
        {
            $to = $translator->_('reply-to-you');
        }

        return $to;
    }

    /**
     * Prepares the content of the message with correct title, subject, and language
     * @param array $messageData the info of the original sent message
     * @param array $senderInfo information from the sender
     * @param array $destinationInfo information for this destination
     * @return array the subject, first line, and content of the message
     */
    private function prepareSubject($messageData, $senderInfo, $destinationInfo, $membersOfGroup) {
        $retSubject             = '';
        $senderTitle            = '';
        $replied                = '';
        $bodyText               = '';
        $links_text             = '';
        $replied_to             = '';
        $replied_to_type        = '';
        $other_reply_count      = 0;
        $other_reply_count_text = '';


        try {
            $registryKey = 'th-' . $destinationInfo['language'];

            if (Zend_Registry::isRegistered($registryKey)) {
                $translator = Zend_Registry::get($registryKey);
            } else {
                $translator = TranslationHelper::getInstance(PATH2_LANGUAGES . 'email-subjects.tmx', $destinationInfo['language']);
                Zend_Registry::set($registryKey, $translator);
            }

            $senderTitle = ucwords($senderInfo['first_name']);

            //Sender Title
            if ($senderInfo['type'] == 'STUDENT') {
                // if mbstring extension is installed, use it to handle multibyte strings
                if (function_exists('mb_substr')) {
                    $last_initial = mb_substr($senderInfo['last_name'], 0, 1, 'UTF-8');
                } else {
                    $last_initial = substr($senderInfo['last_name'], 0, 1);
                }

                $firstLine = ucwords( $senderInfo ['first_name'] ) . ' ' . strtoupper( $last_initial );
                $senderTitle = $firstLine . '.';
            }

            if ($senderInfo ['type'] == 'TEACHER') {
                $displayTitle = (!$senderInfo ['title'] || $senderInfo ['title'] == 'NONE') ? $senderInfo ['first_name'] . ' ' : $translator->_( $senderInfo ['title'] ) . '. ';
                $firstLine = ucwords( strtolower( $displayTitle ) ) . ucwords( $senderInfo ['last_name'] );
                $senderTitle = $firstLine;
            }

            $possibleGroupName = self::checkGroupArray($destinationInfo, $membersOfGroup);

            //subject
            if ($messageData['comment_to'] != NULL) {
                $other_reply_count = ArrayHelper::elem($messageData, 'other_reply_count', 0);

                if ($other_reply_count > 0)
                {
                    if ($other_reply_count == 1)
                    {
                        $other_reply_count_text = $translator->_('one-more-reply');
                    }
                    else
                    {
                        $other_reply_count_text = $other_reply_count . ' ' . $translator->_('multiple-more-replies');
                    }
                }

                $commentToInfo   = Messages::getInstance()->getMessageInfo($messageData['comment_to']);
                $commentToType   = $commentToInfo['type'];
                $replied_to_a    = $translator->_('replied-to-a');
                $replied_to_type = $translator->_('direct-' . $commentToType);
                $retSubject      = $senderTitle . " " . $replied_to_a . $translator->_('direct-' . $commentToType);
                self::logActions('prepareSubject: The type is ' . $commentToType . ' subject: ' . $retSubject . "\n", DEBUG_FULL);

            } else if ($possibleGroupName != false) {
                $groupName = $possibleGroupName;

                //modifyng subject on assigments for parents, they come as members of the group
                if ($destinationInfo ['type'] == 'PARENT' && ($messageData ['type'] == 'assignment' || $messageData ['type'] == 'alert' || $messageData ['type'] == 'text' || $messageData ['type'] == 'comment')) {
                    if(isset($destinationInfo['parent_groups']) && count($destinationInfo['parent_groups']) > 0)
                    {
                        $group_id = $destinationInfo['parent_groups'][$destinationInfo['user_id']];
                        $student_ids = ParentsStudents::getInstance()->getParentStudentsByGroup($destinationInfo['user_id'],$group_id);
                    }
                    else
                    {
                        $students_info = ParentsHandler::getInstance()->getParentStudentsInfo( $destinationInfo );
                        $student_ids = $students_info ['student_ids'];
                    }

                    $groupName = MessagingHelper::getInstance()->addChildrensNames( $groupName, $student_ids); //$destinationInfo['language']
                    self::logActions('prepareSubject: group Name ' . $groupName . "\n", DEBUG_FULL);
                }

                $retSubject = $senderTitle . " " . $translator->_('sent-a') . $translator->_('direct-' . $messageData['type']) . " " . $translator->_('to') . " " . $groupName;
            } else {
                $retSubject = $senderTitle . " " . $translator->_( 'sent-you-a' ) . $translator->_( 'direct-' . $messageData ['type'] );
            }

            self::logActions( 'prepareSubject: subject: ' . $retSubject, DEBUG_FULL );

            $replied = ($messageData ['comment_to'] == NULL) ? '' : ' ' . $translator->_('replied');

            //body
            switch($messageData ['type'])
            {
                case 'assignment' :
                    $bodyText = $messageData ['assignment'];
                    break;
                case 'quiz' :
                    $bodyText = $messageData ['quiz_title'];
                    break;
                case 'poll':
                    $bodyText = $messageData ['poll_question'];
                    break;
                default:
                    $msg = $messageData ['message'];
                    if (strpos( $msg, 'new-group:' ) !== false) {
                        $grp_id = str_replace( 'new-group:', '', $msg );
                        $grp_info = Groups::getInstance()->getGroup( $grp_id );
                        $msg = $translator->_( 'you-created-the-group' ) . " " . $grp_info ['title'] . "\n" . $translator->_( 'the-group-code-is' ) . " " . $grp_info ['code'];
                    }

                    $bodyText = MessagingHelper::formatDBString($msg,true,true,false,true);
                    //self::logActions( "\n" . 'TEXT: ' . $bodyText, DEBUG_FULL );
                    break;
            }

            if ($messageData['type'] == 'text' && isset( $messageData['links']) && is_array($messageData['links'])) {
                $links_text = '';

                foreach ( $messageData['links'] as $link ) {
                    if (!isset($link['type']) || $link['type'] != 'embed') {
                        $link_title = trim($link['desc']);
                        $link_title  = ($link_title && !filter_var($link_title, FILTER_VALIDATE_URL) ? $link_title : 'Link');
                        if(LinkHandler::isEdmodoPostUrl($link['url']))
                        {
                            if(strpos($link_title,'Edmodo | Where Learning Happens') === false)
                            {
                                $links_text .=   $link_title ;
                            }
                            else
                            {
                                $link_title = $translator->_( 'edmodo-post' );
                                $links_text .= "<a href='{$link['url']}'>{$link_title}</a>\n";
                            }
                        }
                        else
                        {
                            $links_text .= "<a href='{$link['url']}'>{$link_title}</a>\n";
                        }
                    }
                }
            }
        } catch ( exception $e ) {
            self::logActions( "\n" . 'FAILURE: MSGID: ' . self::$msgID . ', MSGTYPE: ' . self::$msgType, DEBUG_CATCHS );
            self::logActions( "\n" . 'prepareSubject: processing subject ' . $e->getMessage(), DEBUG_CATCHS );
        }

        $emailContents = array ('subject' => $retSubject, 'sender_title' => $senderTitle, 'first-line' => $senderTitle . $replied . ':', 'content' => $bodyText, 'links_text' => $links_text, 'replied_to_a' => $replied_to_a, 'replied_to_type' => $replied_to_type, 'other_reply_count' => $other_reply_count, 'other_reply_count_text' => $other_reply_count_text, 'group_name' => $groupName);

        return $emailContents;
    }

    private function formatMessageLink($contents, $messageData, $language, $recipientInfo, $serverName) {
        try {
            $formattedLink = MailHandler::getInstance()->formatEmailUrl($serverName, $recipientInfo, $messageData);
            self::logActions( "\n" . 'formatMessageLink: recipientInfo ' . print_r( $recipientInfo, true ), DEBUG_FULL );
        } catch ( exception $e ) {
            self::logActions( "\n" . 'FAILURE: MSGID: ' . self::$msgID . ', MSGTYPE: ' . self::$msgType, DEBUG_CATCHS );
            self::logActions( "\n" . 'formatMessageLink: formatting server name ' . $e->getMessage(), DEBUG_CATCHS );
        }

        $spotlightType = '';
        $registryKey='th-'.$language;
        if(false && Zend_Registry::isRegistered($registryKey)){
            $translator=Zend_Registry::get($registryKey);
        }else{
            // $translator = new TranslationHelper( new Zend_Translate( 'tmx', PATH2_LANGUAGES . 'email-subjects.tmx', $language ) );
            $translator  = TranslationHelper::getInstance(PATH2_LANGUAGES . 'email-subjects.tmx', 'en');
            $englishType = $translator->_('link-' . $messageData['type']);
            $translator  = TranslationHelper::getInstance(PATH2_LANGUAGES . 'email-subjects.tmx', $language);

            Zend_Registry::set($registryKey, $translator);
        }


        $translatedType = $translator->_( 'link-' . $messageData ['type'] );

        try {
            self::logActions( "\n" . 'formatMessageLink: Will format: ' . $contents ['isDirect'] . ' type: ' . $messageData ['type'] . ' comment-to: ' . $messageData ['comment_to'], DEBUG_FULL );
            if ($messageData ['comment_to'] != NULL) {
                $formattedLink .= '/post/' . $messageData ['comment_to'];
                $translatedType = $translator->_( 'comment-to' );
            } else if (!empty($messageData ['message_id'])) {
                $formattedLink .= '/post/' . $messageData ['message_id'];
            }
            else {
                //No spotlight type, just go to home
                $formattedLink .= '';
            }
        } catch ( exception $e ) {
            self::logActions( "\n" . 'FAILURE: MSGID: ' . self::$msgID . ', MSGTYPE: ' . self::$msgType, DEBUG_CATCHS );
            self::logActions( "\n" . 'formatMessageLink: formatting link ' . $e->getMessage(), DEBUG_CATCHS );
        }

        $formattedArray = array(
            'formattedLink'  => $formattedLink,
            'translatedType' => $translatedType,
            'type'           => $englishType,
        );

        self::logActions( "\n Formated Link: \n" . $formattedLink, DEBUG_FULL );
        return $formattedArray;
    }

    /**
     * Searches for the group name for a user that belongs to that group
     * @param array $destinationInfo the info for the user to search
     * @param array $membersOfGroup ids from all users members to this group
     * @return string group Name or false
     */
    private function checkGroupArray($destinationInfo, $membersOfGroup) {
        $answer = false;
        try {
            foreach ( $membersOfGroup as $key => $member ) {
                if (array_key_exists( $destinationInfo ['user_id'], $member )) {
                    $answer = $member [$destinationInfo ['user_id']];
                    break;
                }
            }
        } catch ( exception $e ) {
            self::logActions( "\n" . 'FAILURE: MSGID: ' . self::$msgID . ', MSGTYPE: ' . self::$msgType, DEBUG_CATCHS );
            self::logActions( "\n" . 'checkGroupArray:ERROR on for each membersOfGroup ' . $e->getMessage(), DEBUG_CATCHS );
        }
        return $answer;
    }

    /**
     * current way of knowing if a message is from "joining a group"
     * @param array $messageData the info for the user to search
     * @return boolean if message is of type "join group"
     */
    private function isJoinGruoup($messageData) {
        $answer = false;
        if ($messageData ['type'] == 'system') {
            if (stristr( $messageData ['message'], 'joined' ) && stristr( $messageData ['message'], 'group' ))
                $answer = true;
        }

        return $answer;
    }

    //Checks if a user is an admin and has the right settings to receive notifications
    private function isAdminNotification($notification, $message_data, $admin_recipients)
    {
        $is_admin = false;

        if(!empty($notification['admin_notifications']))
        {
            if(!empty($notification['admin_notes']) && $message_data['type'] == 'text' && in_array($notification['user_id'],$admin_recipients))
            {
                $is_admin = true;
            }
            if(!empty($notification['admin_replies']) && $message_data['type'] == 'comment' && in_array($notification['user_id'],$admin_recipients))
            {
                $is_admin = true;
            }
            self::logActions( "\n isAdminNotification::$is_admin ,admin_notes: " . $notification['admin_notes'] ." admin_replies: " . $notification['admin_replies'] . " type: " . $message_data['type'] . " \n"  , DEBUG_FULL );
        }

        return $is_admin;
    }

    /**
     * Determines if a user n…