<?php

class labelsGmail
{
    function listLabels($service)
    {
        $labels = array();
        try {
            $labelsResponse = $service->users_labels->listUsersLabels('me');
            if ($labelsResponse->getLabels()) {
                $labels = array_merge($labels, $labelsResponse->getLabels());
            }
        } catch (Exception $e) {
            print G::LoadTranslation("ID_PMGMAIL_GENERAL_ERROR") . $e->getMessage();
            throw ($e);
        }
        return $labels;
    }

    /**
     * Modify the Labels a Message is associated with.
     *
     * @param  Google_Service_Gmail $service Authorized Gmail API instance.
     * @param  string $userId User's email address. The special value 'me'
     * can be used to indicate the authenticated user.
     * @param  string $messageId ID of Message to modify.
     * @param  array $labelsToAdd Array of Labels to add.
     * @param  array $labelsToRemove Array of Labels to remove.
     */
    function modifyMessage($service, $userId, $messageId, $labelsToAdd, $labelsToRemove) {
        $mods = new Google_Service_Gmail_ModifyMessageRequest();
        $mods->setAddLabelIds($labelsToAdd);
        $mods->setRemoveLabelIds($labelsToRemove);
        try {
            $message = $service->users_messages->modify($userId, $messageId, $mods);
        } catch (Exception $e) {
            print G::LoadTranslation("ID_PMGMAIL_GENERAL_ERROR") . $e->getMessage();
            throw ($e);
        }
    }

    /**
     * Get list of Messages in user's mailbox.
     *
     * @param  Google_Service_Gmail $service Authorized Gmail API instance.
     * @param  string $userId User's email address. The special value 'me'
     * can be used to indicate the authenticated user.
     * @return array Array of Messages.
     */
    function listMessages($service, $userId, $query, $labels) {
        $pageToken = NULL;
        $messages = array();
        $opt_param = array();
        do {
            try {
                if ($pageToken) {
                    $opt_param['pageToken'] = $pageToken;
                }
                $opt_param['labelIds'] = $labels;
                $opt_param['q'] = $query;
                $opt_param['maxResults'] = 3;
                $messagesResponse = $service->users_messages->listUsersMessages($userId, $opt_param);
                if ($messagesResponse->getMessages()) {
                    $messages = array_merge($messages, $messagesResponse->getMessages());
                }
            } catch (Exception $e) {
                print G::LoadTranslation("ID_PMGMAIL_GENERAL_ERROR") . $e->getMessage();
                throw ($e);
            }
        } while ($pageToken);

        return $messages;
    }

    public function setLabelsToPauseCase ($caseId, $index) {
        require_once PATH_TRUNK . 'vendor' . PATH_SEP . 'google' . PATH_SEP . 'apiclient' . PATH_SEP . 'src' . PATH_SEP . 'Google' . PATH_SEP . 'autoload.php';
        require_once (PATH_HOME . "engine" . PATH_SEP . "classes" . PATH_SEP . "class.pmGoogleApi.php");

        $Pmgmail = new \ProcessMaker\BusinessModel\Pmgmail();
        $appData = $Pmgmail->getDraftApp($caseId, $index);

        foreach ($appData as $application){
            $appNumber = $application['APP_NUMBER'];
            $index = $application['DEL_INDEX'];
            $threadUsr = $application['USR_UID'];
            $proName = $application['APP_PRO_TITLE'];
            $threadStatus = $application['DEL_THREAD_STATUS'];
            $appStatus = $application['APP_STATUS'];
        }

        //Getting the privious User email
        $oUsers = new \Users();
        $usrData = $oUsers->loadDetails($threadUsr);
        $mail = $usrData['USR_EMAIL'];

        //The Subject to search the email
        $subject = "[PM] " .$proName. " Case: ". $appNumber;

        $pmGoogle = new PMGoogleApi();
        $pmGoogle->setUser($mail);
        $pmGoogle->setScope('https://www.googleapis.com/auth/gmail.modify');
        $client = $pmGoogle->serviceClient();
        $service = new Google_Service_Gmail($client);
        $labelsIds = $this->getLabelsIds($service);

        if($appStatus == 'DRAFT'){
            $labelsToRemove = $labelsIds['Draft'];
            $labelsToSearch = "*-draft";
            $labelsToAdd = $labelsIds['Paused'];
        }

        if($appStatus == 'TO_DO'){
            $labelsToRemove = $labelsIds['Inbox'];
            $labelsToSearch = "*-inbox";
            $labelsToAdd = $labelsIds['Paused'];
        }

        $q = "subject:('".preg_quote($subject, '-')."') label:('".$labelsToSearch."')";
        $messageList = $this->listMessages($service, $mail, $q, $labelsToRemove);
        foreach ($messageList as $message) {
            $messageId = $message->getId();
            $modifyResult = $this->modifyMessage($service, $mail, $messageId, array($labelsToAdd), array($labelsToRemove));
        }
    }

    function setLabelsTounpauseCase ($caseId, $index) {
        require_once PATH_TRUNK . 'vendor' . PATH_SEP . 'google' . PATH_SEP . 'apiclient' . PATH_SEP . 'src' . PATH_SEP . 'Google' . PATH_SEP . 'autoload.php';
        require_once (PATH_HOME . "engine" . PATH_SEP . "classes" . PATH_SEP . "class.pmGoogleApi.php");

        $Pmgmail = new \ProcessMaker\BusinessModel\Pmgmail();
        $appData = $Pmgmail->getDraftApp($caseId, $index);

        foreach ($appData as $application){
            $appNumber = $application['APP_NUMBER'];
            $index = $application['DEL_INDEX'];
            $threadUsr = $application['USR_UID'];
            $proName = $application['APP_PRO_TITLE'];
            $threadStatus = $application['DEL_THREAD_STATUS'];
            $appStatus = $application['APP_STATUS'];
        }

        //Getting the privious User email
        $oUsers = new \Users();
        $usrData = $oUsers->loadDetails($threadUsr);
        $mail = $usrData['USR_EMAIL'];

        //The Subject to search the email
        $subject = "[PM] " .$proName. " Case: ". $appNumber;

        $pmGoogle = new PMGoogleApi();
        $pmGoogle->setUser($mail);
        $pmGoogle->setScope('https://www.googleapis.com/auth/gmail.modify');
        $client = $pmGoogle->serviceClient();
        $service = new Google_Service_Gmail($client);
        $labelsIds = $this->getLabelsIds($service);

        if($appStatus == 'DRAFT'){
            $labelsToRemove = $labelsIds['Paused'];
            $labelsToSearch = "*-paused";
            $labelsToAdd = $labelsIds['Draft'];
        }

        if($appStatus == 'TO_DO'){
            $labelsToRemove = $labelsIds['Paused'];
            $labelsToSearch = "*-paused";
            $labelsToAdd = $labelsIds['Inbox'];
        }

        $q = "subject:('".preg_quote($subject, '-')."') label:('".$labelsToSearch."')";
        $messageList = $this->listMessages($service, $mail, $q, $labelsToRemove);
        foreach ($messageList as $message) {
            $messageId = $message->getId();
            $modifyResult = $this->modifyMessage($service, $mail, $messageId, array($labelsToAdd), array($labelsToRemove));
        }
    }

    public function setLabels($caseId, $index, $actualLastIndex, $unassigned=false){
        //First getting the actual thread data
        $Pmgmail = new \ProcessMaker\BusinessModel\Pmgmail();
        $appData = $Pmgmail->getDraftApp($caseId, $index);

        foreach ($appData as $application){
            $appNumber = $application['APP_NUMBER'];
            $index = $application['DEL_INDEX'];
            $threadUsr = $application['USR_UID'];
            $proName = $application['APP_PRO_TITLE'];
            $threadStatus = $application['DEL_THREAD_STATUS'];
            $appStatus = $application['APP_STATUS'];
            $tasUid = $application['TAS_UID'];
        }

        if($threadStatus == 'CLOSED' || $unassigned == true) {
            //Getting the privious User email
            $oUsers = new \Users();

            $usrData = $oUsers->loadDetails($threadUsr);
            $mail = $usrData['USR_EMAIL'];

            //The Subject to search the email
            $subject = "[PM] " .$proName. " Case: ". $appNumber;

            require_once PATH_TRUNK . 'vendor' . PATH_SEP . 'google' . PATH_SEP . 'apiclient' . PATH_SEP . 'src' . PATH_SEP . 'Google' . PATH_SEP . 'autoload.php';
            require_once (PATH_HOME . "engine" . PATH_SEP . "classes" . PATH_SEP . "class.pmGoogleApi.php");
            $pmGoogle = new PMGoogleApi();

            $pmGoogle->setUser($mail);

            $pmGoogle->setScope('https://www.googleapis.com/auth/gmail.modify');
            $client = $pmGoogle->serviceClient();

            $service = new Google_Service_Gmail($client);
            $labelsIds = $this->getLabelsIds($service);

            if($actualLastIndex == 0){
                $labelsToRemove = $labelsIds['Draft'];
                $labelsToSearch = "*-draft";
                $labelsToAdd = $labelsIds['Participated'];
            } else if ( ($actualLastIndex == -1) && ($unassigned == true) ){ //Unassigned
                $labelsToRemove = $labelsIds['Unassigned'];
                $labelsToSearch = "*-unassigned";
                $labelsToAdd = $labelsIds['Inbox'];
            } else if($actualLastIndex >= 1) {
                $labelsToRemove = $labelsIds['Inbox'];
                $labelsToSearch = "*-inbox";
                $labelsToAdd = $labelsIds['Participated'];
            }

            //Searching the email in the user's mail
            $q = "subject:('".preg_quote($subject, '-')."') label:('".$labelsToSearch."')";
            $messageList = $this->listMessages($service, $mail, $q, $labelsToRemove);

            foreach ($messageList as $message) {
                $messageId = $message->getId();

                $modifyResult = $this->modifyMessage($service, $mail, $messageId, array($labelsToAdd), array($labelsToRemove));

            }

            //in is unassigned we must remove the label to the orher users
            if ($labelsToRemove === $labelsIds['Unassigned']) {
                require_once (PATH_HOME . "engine" . PATH_SEP . "classes" . PATH_SEP . "model" . PATH_SEP . "TaskUser.php");
                $oTaskUsers = new \TaskUser();
                $taskUsers = $oTaskUsers->getAllUsersTask($tasUid);
                foreach ($taskUsers as $user){
                    $usrData = $oUsers->loadDetails($user['USR_UID']);
                    $nextMail = $usrData['USR_EMAIL'];
                    //this operation is just for the users that didn't make the case claim
                    if ($nextMail !== $mail) {
                        $this->changeLabelsOfUnassigned($appData[0], $nextMail);
                    }
                }
            }
        }
    }

    function changeLabelsOfUnassigned($application, $mail)
    {
        $appNumber = $application['APP_NUMBER'];
        $index = $application['DEL_INDEX'];
        $threadUsr = $application['USR_UID'];
        $proName = $application['APP_PRO_TITLE'];
        $threadStatus = $application['DEL_THREAD_STATUS'];
        $appStatus = $application['APP_STATUS'];
        $tasUid = $application['TAS_UID'];

        //The Subject to search the email
        $subject = "[PM] " .$proName. " Case: ". $appNumber;
        $pmGoogle = new PMGoogleApi();
        $pmGoogle->setUser($mail);
        $pmGoogle->setScope('https://www.googleapis.com/auth/gmail.modify');
        $client = $pmGoogle->serviceClient();
        $service = new Google_Service_Gmail($client);
        $labelsIds = $this->getLabelsIds($service);
        $labelsToRemove = $labelsIds['Unassigned'];
        $labelsToSearch = "*-unassigned";
        $labelsToAdd = $labelsIds['Participated'];

        //Searching the email in the user's mail
        $q = "subject:('".preg_quote($subject, '-')."') label:('".$labelsToSearch."')";
        $messageList = $this->listMessages($service, $mail, $q, $labelsToRemove);

        foreach ($messageList as $message) {
            $messageId = $message->getId();
            $modifyResult = $this->modifyMessage($service, $mail, $messageId, array($labelsToAdd), array($labelsToRemove));

        }
    }


    /**
     * Delete Label with given ID.
     *
     * @param  Google_Service_Gmail $service Authorized Gmail API instance.
     * @param  string $userId User's email address. The special value 'me'
     * can be used to indicate the authenticated user.
     * @param  string $labelId Id of Label to be updated.
     */
    public function deleteLabel($service, $user, $labelId)
    {
        try {
            $service->users_labels->delete($user, $labelId);
        } catch (Exception $e) {
            error_log(G::LoadTranslation("ID_PMGMAIL_GENERAL_ERROR") . $e->getMessage());
        }
    }

    /**
     * Delete PMGmail integration labels getting the list of labels in an email account.
     * @param string $mail User mail adress.
     *
     */
    public function deletePMGmailLabels($mail)
    {
        require_once (PATH_HOME . "engine" . PATH_SEP . "classes" . PATH_SEP . "class.pmGoogleApi.php");
        $pmGoogle = new PMGoogleApi();

        $pmGoogle->setUser($mail);

        $pmGoogle->setScope('https://www.googleapis.com/auth/gmail.modify');
        $client = $pmGoogle->serviceClient();

        $service = new Google_Service_Gmail($client);
        $count = 0;
        $listlabels = $this->listLabels($service);
        foreach ($listlabels as $label) {
            if ($label->getName() == '* Inbox' ||
                $label->getName() == '* Participated' ||
                $label->getName() == '* Unassigned' ||
                $label->getName() == '* Draft' ||
                $label->getName() == '* Inbox' ||
                $label->getName() == '*-- ProcessMaker --*' ||
                $label->getName() == '* Paused'
            ) {
                $oresp = $this->deleteLabel($service, 'me', $label->getId());
                $count++;
            }
        }
        return $count . ' labels successfully deleted.';
    }

    public function addRelabelingToQueue($caseId, $index, $actualLastIndex, $unassigned=false)
    {
        $labelingQueue = new GmailRelabeling();
        $labelingQueue->setCreateDate(date('Y-m-d H:i:s'));
        $labelingQueue->setAppUid($caseId);
        $labelingQueue->setDelIndex($index);
        $labelingQueue->setCurrentLastIndex($actualLastIndex);
        $labelingQueue->setUnassigned(($unassigned === true) ? 1 : 0);
        $labelingQueue->setStatus('pending');
        $labelingQueue->save();
    }

    public function processPendingRelabelingInQueue()
    {
        $c = new \Criteria( 'workflow' );
        $c->add( \GmailRelabelingPeer::STATUS, 'pending' );
        $c->addAscendingOrderByColumn('LABELING_UID');
        $list = \GmailRelabelingPeer::doSelect($c);
        foreach($list as $task) {
            try {
                $oResponse = $this->setLabels($task->getAppUid(),
                    $task->getDelIndex(),
                    $task->getCurrentLastIndex(),
                    ($task->getUnassigned() === 1) ? true : false
                );
                $task->setStatus('completed');
            }
            catch(exception $e){
                $task->setMsgError($e->getMessage());
                $task->setStatus('pending');
            }
            $task->save();
        }
    }

    private function getLabelsIds($service) {
        $result = array();
        try {
            $listlabels = $this->listLabels($service);
            foreach ($listlabels as $label) {
                $labId =  $label->getId();
                $labName = $label->getName();
                switch($labName){
                    case "* Inbox":
                        $result['Inbox'] = $labId;
                        break;
                    case "* Participated":
                        $result['Participated'] = $labId;
                        break;
                    case "* Unassigned":
                        $result['Unassigned'] = $labId;
                        break;
                    case "* Draft":
                        $result['Draft'] = $labId;
                        break;
                    case "* Paused":
                        $result['Paused'] = $labId;
                        break;
                }
            }
        }
        catch(Exception $e) {
            throw $e;
        }
        return $result;
    }
}