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Current File : /home/utripoli/public_html/journalDEL/lib/pkp/controllers/api/file/PKPManageFileApiHandler.php
<?php

/**
 * @file controllers/api/file/PKPManageFileApiHandler.php
 *
 * Copyright (c) 2014-2021 Simon Fraser University
 * Copyright (c) 2000-2021 John Willinsky
 * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
 *
 * @class PKPManageFileApiHandler
 *
 * @ingroup controllers_api_file
 *
 * @brief Class defining an AJAX API for file manipulation.
 */

namespace PKP\controllers\api\file;

use APP\core\Application;
use APP\core\Request;
use APP\core\Services;
use APP\facades\Repo;
use APP\handler\Handler;
use APP\notification\NotificationManager;
use APP\template\TemplateManager;
use PKP\controllers\wizard\fileUpload\form\SubmissionFilesMetadataForm;
use PKP\core\JSONMessage;
use PKP\core\PKPApplication;
use PKP\db\DAORegistry;
use PKP\log\event\EventLogEntry;
use PKP\notification\NotificationDAO;
use PKP\notification\PKPNotification;
use PKP\observers\events\MetadataChanged;
use PKP\security\authorization\SubmissionFileAccessPolicy;
use PKP\security\Role;
use PKP\stageAssignment\StageAssignmentDAO;
use PKP\submissionFile\SubmissionFile;

abstract class PKPManageFileApiHandler extends Handler
{
    /**
     * Constructor.
     */
    public function __construct()
    {
        parent::__construct();
        $this->addRoleAssignment(
            [Role::ROLE_ID_MANAGER, Role::ROLE_ID_SITE_ADMIN, Role::ROLE_ID_SUB_EDITOR, Role::ROLE_ID_ASSISTANT, Role::ROLE_ID_REVIEWER, Role::ROLE_ID_AUTHOR],
            ['deleteFile', 'editMetadata', 'editMetadataTab', 'saveMetadata', 'cancelFileUpload']
        );
    }

    //
    // Implement methods from PKPHandler
    //
    public function authorize($request, &$args, $roleAssignments)
    {
        $this->addPolicy(new SubmissionFileAccessPolicy($request, $args, $roleAssignments, SubmissionFileAccessPolicy::SUBMISSION_FILE_ACCESS_MODIFY, (int) $args['submissionFileId']));

        return parent::authorize($request, $args, $roleAssignments);
    }

    //
    // Public handler methods
    //
    /**
     * Delete a file or revision
     *
     * @param array $args
     * @param Request $request
     *
     * @return JSONMessage JSON object
     */
    public function deleteFile($args, $request)
    {
        if (!$request->checkCSRF()) {
            return new JSONMessage(false);
        }

        $submissionFile = $this->getAuthorizedContextObject(Application::ASSOC_TYPE_SUBMISSION_FILE);
        Repo::submissionFile()->delete($submissionFile);

        $this->setupTemplate($request);
        $user = $request->getUser();
        if (!$request->getUserVar('suppressNotification')) {
            $notificationMgr = new NotificationManager();
            $notificationMgr->createTrivialNotification(
                $user->getId(),
                PKPNotification::NOTIFICATION_TYPE_SUCCESS,
                ['contents' => __('notification.removedFile')]
            );
        }

        return \PKP\db\DAO::getDataChangedEvent();
    }

    /**
     * Restore original file when cancelling the upload wizard
     */
    public function cancelFileUpload(array $args, Request $request): JSONMessage
    {
        if (!$request->checkCSRF()) {
            return new JSONMessage(false);
        }

        $submissionFile = $this->getAuthorizedContextObject(Application::ASSOC_TYPE_SUBMISSION_FILE);
        $originalFile = $request->getUserVar('originalFile') ? (array)$request->getUserVar('originalFile') : null;
        $revisedFileId = $request->getUserVar('fileId') ? (int)$request->getUserVar('fileId') : null;

        // Get revisions and check file IDs
        $revisions = Repo::submissionFile()->getRevisions($submissionFile->getId());
        $revisionIds = [];
        foreach ($revisions as $revision) {
            $revisionIds[] = $revision->fileId;
        }

        if (!$revisedFileId || !in_array($revisedFileId, $revisionIds)) {
            return new JSONMessage(false);
        }

        if (!isset($originalFile['fileId']) || !in_array($originalFile['fileId'], $revisionIds)) {
            return new JSONMessage(false);
        }

        $originalFileId = (int) $originalFile['fileId'];

        // Get the file name and uploader user ID
        $originalUserId = $originalFile['uploaderUserId'] ? (int)$originalFile['uploaderUserId'] : null;
        $originalFileName = $originalFile['name'] ? (array)$originalFile['name'] : null;
        if (!$originalUserId || !$originalFileName) {
            return new JSONMessage(false);
        }

        $originalUser = Repo::user()->get($originalUserId);
        if (!$originalUser) {
            return new JSONMessage(false);
        }

        $originalUsername = $originalUser->getUsername();
        $matchedLogEntry = $this->findMatchedLogEntry($submissionFile, $originalFileId, $originalUsername, $originalFileName);
        if (!$matchedLogEntry) {
            return new JSONMessage(false);
        }

        // Restore original submission file
        Repo::submissionFile()->edit(
            $submissionFile,
            [
                'fileId' => $matchedLogEntry->getData('fileId'),
                'name' => $matchedLogEntry->getData('filename'),
                'uploaderUserId' => Repo::user()->getByUsername($matchedLogEntry->getData('username'))->getId(),
            ]
        );

        // Remove uploaded file
        Services::get('file')->delete($revisedFileId);

        $this->setupTemplate($request);
        return \PKP\db\DAO::getDataChangedEvent();
    }

    /**
     * Edit submission file metadata modal.
     *
     * @param array $args
     * @param Request $request
     *
     * @return JSONMessage JSON object
     */
    public function editMetadata($args, $request)
    {
        $submissionFile = $this->getAuthorizedContextObject(Application::ASSOC_TYPE_SUBMISSION_FILE);
        if ($submissionFile->getFileStage() == SubmissionFile::SUBMISSION_FILE_PROOF) {
            $templateMgr = TemplateManager::getManager($request);
            $templateMgr->assign('submissionFile', $submissionFile);
            $templateMgr->assign('stageId', $request->getUserVar('stageId'));
            return new JSONMessage(true, $templateMgr->fetch('controllers/api/file/editMetadata.tpl'));
        } else {
            return $this->editMetadataTab($args, $request);
        }
    }

    /**
     * Edit submission file metadata tab.
     *
     * @param array $args
     * @param Request $request
     *
     * @return JSONMessage JSON object
     */
    public function editMetadataTab($args, $request)
    {
        $submissionFile = $this->getAuthorizedContextObject(Application::ASSOC_TYPE_SUBMISSION_FILE);
        $reviewRound = $this->getAuthorizedContextObject(Application::ASSOC_TYPE_REVIEW_ROUND);
        $stageId = $request->getUserVar('stageId');
        $form = new SubmissionFilesMetadataForm($submissionFile, $stageId, $reviewRound);
        $form->setShowButtons(true);
        return new JSONMessage(true, $form->fetch($request));
    }

    /**
     * Save the metadata of the latest revision of
     * the requested submission file.
     *
     * @param array $args
     * @param Request $request
     *
     * @return JSONMessage JSON object
     */
    public function saveMetadata($args, $request)
    {
        $submission = $this->getAuthorizedContextObject(Application::ASSOC_TYPE_SUBMISSION);
        $submissionFile = $this->getAuthorizedContextObject(Application::ASSOC_TYPE_SUBMISSION_FILE);
        $reviewRound = $this->getAuthorizedContextObject(Application::ASSOC_TYPE_REVIEW_ROUND);
        $stageId = $request->getUserVar('stageId');
        $form = new SubmissionFilesMetadataForm($submissionFile, $stageId, $reviewRound);
        $form->readInputData();
        if ($form->validate()) {
            $form->execute();
            $submissionFile = $form->getSubmissionFile();

            // Get a list of author user IDs
            $authorUserIds = [];
            $stageAssignmentDao = DAORegistry::getDAO('StageAssignmentDAO'); /** @var StageAssignmentDAO $stageAssignmentDao */
            $submitterAssignments = $stageAssignmentDao->getBySubmissionAndRoleIds($submission->getId(), [Role::ROLE_ID_AUTHOR]);
            while ($assignment = $submitterAssignments->next()) {
                $authorUserIds[] = $assignment->getUserId();
            }

            // Update the notifications
            $notificationMgr = new NotificationManager(); /** @var NotificationManager $notificationMgr */
            $notificationMgr->updateNotification(
                $request,
                $this->getUpdateNotifications(),
                $authorUserIds,
                Application::ASSOC_TYPE_SUBMISSION,
                $submission->getId()
            );

            if ($reviewRound) {
                // Delete any 'revision requested' notifications since revisions are now in.
                $context = $request->getContext();
                $notificationDao = DAORegistry::getDAO('NotificationDAO'); /** @var NotificationDAO $notificationDao */
                $stageAssignmentDao = DAORegistry::getDAO('StageAssignmentDAO'); /** @var StageAssignmentDAO $stageAssignmentDao */
                $submitterAssignments = $stageAssignmentDao->getBySubmissionAndRoleIds($submission->getId(), [Role::ROLE_ID_AUTHOR]);
                while ($assignment = $submitterAssignments->next()) {
                    $notificationDao->deleteByAssoc(Application::ASSOC_TYPE_SUBMISSION, $submission->getId(), $assignment->getUserId(), PKPNotification::NOTIFICATION_TYPE_EDITOR_DECISION_PENDING_REVISIONS, $context->getId());
                }
            }

            // Inform SearchIndex of changes
            event(new MetadataChanged($submission));

            return \PKP\db\DAO::getDataChangedEvent();
        } else {
            return new JSONMessage(true, $form->fetch($request));
        }
    }

    /**
     * Get the list of notifications to be updated on metadata form submission.
     *
     * @return array
     */
    protected function getUpdateNotifications()
    {
        return [PKPNotification::NOTIFICATION_TYPE_PENDING_EXTERNAL_REVISIONS];
    }

    /**
     * Compare user supplied data when cancelling file upload with saved in the event log;
     * assuming we found the right entry if they match
     */
    protected function findMatchedLogEntry(
        SubmissionFile $submissionFile,
        int            $originalFileId,
        string         $originalUsername,
        array          $originalFileName
    ): ?EventLogEntry
    {
        $logEntries = Repo::eventLog()->getCollector()
            ->filterByAssoc(PKPApplication::ASSOC_TYPE_SUBMISSION_FILE, [$submissionFile->getId()])
            ->getMany();

        $match = null;
        foreach ($logEntries as $logEntry) {

            $loggedUsername = $logEntry->getData('username');
            $loggedFileName = $logEntry->getData('filename');
            $loggedFileId = $logEntry->getData('fileId');
            if (!$loggedUsername || !$loggedFileName || !$loggedFileId) {
                continue;
            }

            if (
                $loggedUsername === $originalUsername &&
                $loggedFileName == $originalFileName &&
                $loggedFileId === $originalFileId
            ) {
                $match = $logEntry;
                break;
            }
        }

        return $match;
    }
}

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