Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

namespace core_h5p;

use core_xapi\handler;

use core_xapi\xapi_exception;

use Moodle\H5PFrameworkInterface;

use Moodle\H5PCore;

// phpcs:disable moodle.NamingConventions.ValidFunctionName.LowercaseMethod

/**

 * Moodle's implementation of the H5P framework interface.

 *

 * @package    core_h5p

 * @copyright  2019 Mihail Geshoski <mihail@moodle.com>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class framework implements H5PFrameworkInterface {

    /** @var string The path to the last uploaded h5p */

    private $lastuploadedfolder;

    /** @var string The path to the last uploaded h5p file */

    private $lastuploadedfile;

    /** @var \stored_file The .h5p file */

    private $file;

    /**

     * Returns info for the current platform.

     * Implements getPlatformInfo.

     *

     * @return array An associative array containing:

     *               - name: The name of the platform, for instance "Moodle"

     *               - version: The version of the platform, for instance "3.8"

     *               - h5pVersion: The version of the H5P component

     */

    public function getPlatformInfo() {

        global $CFG;

        return array(

            'name' => 'Moodle',

            'version' => $CFG->version,

            'h5pVersion' => $CFG->version,

        );

    }

    /**

     * Fetches a file from a remote server using HTTP GET

     * Implements fetchExternalData.

     *

     * @param  string  $url  Where you want to get or send data.

     * @param  array  $data  Data to post to the URL.

     * @param  bool  $blocking  Set to 'FALSE' to instantly time out (fire and forget).

     * @param  string  $stream  Path to where the file should be saved.

     * @param  bool  $fulldata  Return additional response data such as headers and potentially other data

     * @param  array  $headers  Headers to send

     * @param  array  $files Files to send

     * @param  string  $method

     *

     * @return string|array The content (response body), or an array with data. NULL if something went wrong

     */

    public function fetchExternalData($url, $data = null, $blocking = true, $stream = null, $fulldata = false, $headers = [],

            $files = [], $method = 'POST') {

        if ($stream === null) {

            // Download file.

            set_time_limit(0);

            // Get the extension of the remote file.

            $parsedurl = parse_url($url);

            $ext = pathinfo($parsedurl['path'], PATHINFO_EXTENSION);

            // Generate local tmp file path.

            $fs = new \core_h5p\file_storage();

            $localfolder = $fs->getTmpPath();

            $stream = $localfolder;

            // Add the remote file's extension to the temp file.

            if ($ext) {

                $stream .= '.' . $ext;

            }

            $this->getUploadedH5pFolderPath($localfolder);

            $this->getUploadedH5pPath($stream);

        }

        $response = download_file_content($url, null, $data, true, 300, 20,

                false, $stream);

        if (empty($response->error) && ($response->status != '404')) {

            return $response->results;

        } else {

            $this->setErrorMessage($response->error, 'failed-fetching-external-data');

        }

    }

    /**

     * Set the tutorial URL for a library. All versions of the library is set.

     * Implements setLibraryTutorialUrl.

     *

     * @param string $libraryname

     * @param string $url

     */

    public function setLibraryTutorialUrl($libraryname, $url) {

        global $DB;

        $sql = 'UPDATE {h5p_libraries}

                   SET tutorial = :tutorial

                 WHERE machinename = :machinename';

        $params = [

            'tutorial' => $url,

            'machinename' => $libraryname,

        ];

        $DB->execute($sql, $params);

    }

    /**

     * Set an error message.

     * Implements setErrorMessage.

     *

     * @param string $message The error message

     * @param string $code An optional code

     */

    public function setErrorMessage($message, $code = null) {

        if ($message !== null) {

            $this->set_message('error', $message, $code);

        }

    }

    /**

     * Set an info message.

     * Implements setInfoMessage.

     *

     * @param string $message The info message

     */

    public function setInfoMessage($message) {

        if ($message !== null) {

            $this->set_message('info', $message);

        }

    }

    /**

     * Return messages.

     * Implements getMessages.

     *

     * @param string $type The message type, e.g. 'info' or 'error'

     * @return string[] Array of messages

     */

    public function getMessages($type) {

        global $SESSION;

        // Return and reset messages.

        $messages = array();

        if (isset($SESSION->core_h5p_messages[$type])) {

            $messages = $SESSION->core_h5p_messages[$type];

            unset($SESSION->core_h5p_messages[$type]);

            if (empty($SESSION->core_h5p_messages)) {

                unset($SESSION->core_h5p_messages);

            }

        }

        return $messages;

    }

    /**

     * Translation function.

     * The purpose of this function is to map the strings used in the core h5p methods

     * and replace them with the translated ones. If a translation for a particular string

     * is not available, the default message (key) will be returned.

     * Implements t.

     *

     * @param string $message The english string to be translated

     * @param array $replacements An associative array of replacements to make after translation

     * @return string Translated string or the english string if a translation is not available

     */

    public function t($message, $replacements = array()) {

        // Create mapping.

        $translationsmap = [

            'The file you uploaded is not a valid HTML5 Package (It does not have the .h5p file extension)' => 'noextension',

            'The file you uploaded is not a valid HTML5 Package (We are unable to unzip it)' => 'nounzip',

            'The main h5p.json file is not valid' => 'nojson',

            'Library directory name must match machineName or machineName-majorVersion.minorVersion (from library.json).' .

                ' (Directory: %directoryName , machineName: %machineName, majorVersion: %majorVersion, minorVersion:' .

                ' %minorVersion)'

                => 'librarydirectoryerror',

            'A valid content folder is missing' => 'missingcontentfolder',

            'A valid main h5p.json file is missing' => 'invalidmainjson',

            'Missing required library @library' => 'missinglibrary',

            "Note that the libraries may exist in the file you uploaded, but you're not allowed to upload new libraries." .

                ' Contact the site administrator about this.' => 'missinguploadpermissions',

            'Invalid library name: %name' => 'invalidlibraryname',

            'Could not find library.json file with valid json format for library %name' => 'missinglibraryjson',

            'Invalid semantics.json file has been included in the library %name' => 'invalidsemanticsjson',

            'Invalid language file %file in library %library' => 'invalidlanguagefile',

            'Invalid language file %languageFile has been included in the library %name' => 'invalidlanguagefile2',

            'The file "%file" is missing from library: "%name"' => 'missinglibraryfile',

            'The system was unable to install the <em>%component</em> component from the package, it requires a newer' .

                ' version of the H5P plugin. This site is currently running version %current, whereas the required version' .

                ' is %required or higher. You should consider upgrading and then try again.' => 'missingcoreversion',

            "Invalid data provided for %property in %library. Boolean expected." => 'invalidlibrarydataboolean',

            "Invalid data provided for %property in %library" => 'invalidlibrarydata',

            "Can't read the property %property in %library" => 'invalidlibraryproperty',

            'The required property %property is missing from %library' => 'missinglibraryproperty',

            'Illegal option %option in %library' => 'invalidlibraryoption',

            'Added %new new H5P library and updated %old old one.' => 'addedandupdatedss',

            'Added %new new H5P library and updated %old old ones.' => 'addedandupdatedsp',

            'Added %new new H5P libraries and updated %old old one.' => 'addedandupdatedps',

            'Added %new new H5P libraries and updated %old old ones.' => 'addedandupdatedpp',

            'Added %new new H5P library.' => 'addednewlibrary',

            'Added %new new H5P libraries.' => 'addednewlibraries',

            'Updated %old H5P library.' => 'updatedlibrary',

            'Updated %old H5P libraries.' => 'updatedlibraries',

            'Missing dependency @dep required by @lib.' => 'missingdependency',

            'Provided string is not valid according to regexp in semantics. (value: "%value", regexp: "%regexp")'

                => 'invalidstring',

            'File "%filename" not allowed. Only files with the following extensions are allowed: %files-allowed.'

                => 'invalidfile',

            'Invalid selected option in multi-select.' => 'invalidmultiselectoption',

            'Invalid selected option in select.' => 'invalidselectoption',

            'H5P internal error: unknown content type "@type" in semantics. Removing content!' => 'invalidsemanticstype',

            'Copyright information' => 'copyrightinfo',

            'Title' => 'title',

            'Author' => 'author',

            'Year(s)' => 'years',

            'Year' => 'year',

            'Source' => 'source',

            'License' => 'license',

            'Undisclosed' => 'undisclosed',

            'General Public License v3' => 'gpl',

            'Public Domain' => 'pd',

            'Public Domain Dedication and Licence' => 'pddl',

            'Public Domain Mark' => 'pdm',

            'Public Domain Mark (PDM)' => 'pdm',

            'Copyright' => 'copyrightstring',

            'The mbstring PHP extension is not loaded. H5P need this to function properly' => 'missingmbstring',

            'The version of the H5P library %machineName used in this content is not valid. Content contains %contentLibrary, ' .

                'but it should be %semanticsLibrary.' => 'wrongversion',

            'The H5P library %library used in the content is not valid' => 'invalidlibrarynamed',

            'Fullscreen' => 'fullscreen',

            'Disable fullscreen' => 'disablefullscreen',

            'Download' => 'download',

            'Rights of use' => 'copyright',

            'Embed' => 'embed',

            'Size' => 'size',

            'Show advanced' => 'showadvanced',

            'Hide advanced' => 'hideadvanced',

            'Include this script on your website if you want dynamic sizing of the embedded content:' => 'resizescript',

            'Close' => 'close',

            'Thumbnail' => 'thumbnail',

            'No copyright information available for this content.' => 'nocopyright',

            'Download this content as a H5P file.' => 'downloadtitle',

            'View copyright information for this content.' => 'copyrighttitle',

            'View the embed code for this content.' => 'embedtitle',

            'Visit H5P.org to check out more cool content.' => 'h5ptitle',

            'This content has changed since you last used it.' => 'contentchanged',

            "You'll be starting over." => 'startingover',

            'by' => 'by',

            'Show more' => 'showmore',

            'Show less' => 'showless',

            'Sublevel' => 'sublevel',

            'Confirm action' => 'confirmdialogheader',

            'Please confirm that you wish to proceed. This action is not reversible.' => 'confirmdialogbody',

            'Cancel' => 'cancellabel',

            'Confirm' => 'confirmlabel',

            '4.0 International' => 'licenseCC40',

            '3.0 Unported' => 'licenseCC30',

            '2.5 Generic' => 'licenseCC25',

            '2.0 Generic' => 'licenseCC20',

            '1.0 Generic' => 'licenseCC10',

            'General Public License' => 'licenseGPL',

            'Version 3' => 'licenseV3',

            'Version 2' => 'licenseV2',

            'Version 1' => 'licenseV1',

            'CC0 1.0 Universal (CC0 1.0) Public Domain Dedication' => 'licenseCC010',

            'CC0 1.0 Universal' => 'licenseCC010U',

            'License Version' => 'licenseversion',

            'Creative Commons' => 'creativecommons',

            'Attribution' => 'ccattribution',

            'Attribution (CC BY)' => 'ccattribution',

            'Attribution-ShareAlike' => 'ccattributionsa',

            'Attribution-ShareAlike (CC BY-SA)' => 'ccattributionsa',

            'Attribution-NoDerivs' => 'ccattributionnd',

            'Attribution-NoDerivs (CC BY-ND)' => 'ccattributionnd',

            'Attribution-NonCommercial' => 'ccattributionnc',

            'Attribution-NonCommercial (CC BY-NC)' => 'ccattributionnc',

            'Attribution-NonCommercial-ShareAlike' => 'ccattributionncsa',

            'Attribution-NonCommercial-ShareAlike (CC BY-NC-SA)' => 'ccattributionncsa',

            'Attribution-NonCommercial-NoDerivs' => 'ccattributionncnd',

            'Attribution-NonCommercial-NoDerivs (CC BY-NC-ND)' => 'ccattributionncnd',

            'Public Domain Dedication (CC0)' => 'ccpdd',

            'Years (from)' => 'yearsfrom',

            'Years (to)' => 'yearsto',

            "Author's name" => 'authorname',

            "Author's role" => 'authorrole',

            'Editor' => 'editor',

            'Licensee' => 'licensee',

            'Originator' => 'originator',

            'Any additional information about the license' => 'additionallicenseinfo',

            'License Extras' => 'licenseextras',

            'Changelog' => 'changelog',

            'Content Type' => 'contenttype',

            'Date' => 'date',

            'Changed by' => 'changedby',

            'Description of change' => 'changedescription',

            'Photo cropped, text changed, etc.' => 'changeplaceholder',

            'Author comments' => 'authorcomments',

            'Comments for the editor of the content (This text will not be published as a part of copyright info)'

                => 'authorcommentsdescription',

            'Reuse' => 'reuse',

            'Reuse Content' => 'reuseContent',

            'Reuse this content.' => 'reuseDescription',

            'Content is copied to the clipboard' => 'contentCopied',

            'Connection lost. Results will be stored and sent when you regain connection.' => 'connectionLost',

            'Connection reestablished.' => 'connectionReestablished',

            'Attempting to submit stored results.' => 'resubmitScores',

            'Your connection to the server was lost' => 'offlineDialogHeader',

            'We were unable to send information about your completion of this task. Please check your internet connection.'

                => 'offlineDialogBody',

            'Retrying in :num....' => 'offlineDialogRetryMessage',

            'Retry now' => 'offlineDialogRetryButtonLabel',

            'Successfully submitted results.' => 'offlineSuccessfulSubmit',

            'One of the files inside the package exceeds the maximum file size allowed. (%file %used > %max)'

                => 'fileExceedsMaxSize',

            'The total size of the unpacked files exceeds the maximum size allowed. (%used > %max)'

                => 'unpackedFilesExceedsMaxSize',

            'Unable to read file from the package: %fileName' => 'couldNotReadFileFromZip',

            'Unable to parse JSON from the package: %fileName' => 'couldNotParseJSONFromZip',

            'A problem with the server write access was detected. Please make sure that your server can write to your data folder.' => 'nowriteaccess',

            'H5P hub communication has been disabled because one or more H5P requirements failed.' => 'hubcommunicationdisabled',

            'Site could not be registered with the hub. Please contact your site administrator.' => 'sitecouldnotberegistered',

            'The H5P Hub has been disabled until this problem can be resolved. You may still upload libraries through the "H5P Libraries" page.' => 'hubisdisableduploadlibraries',

            'When you have revised your server setup you may re-enable H5P hub communication in H5P Settings.' => 'reviseserversetupandretry',

            'You have been provided a unique key that identifies you with the Hub when receiving new updates. The key is available for viewing in the "H5P Settings" page.' => 'sitekeyregistered',

            'Your PHP max post size is quite small. With your current setup, you may not upload files larger than {$a->%number} MB. This might be a problem when trying to upload H5Ps, images and videos. Please consider to increase it to more than 5MB' => 'maxpostsizetoosmall',

            'Your PHP max upload size is bigger than your max post size. This is known to cause issues in some installations.' => 'uploadsizelargerthanpostsize',

            'Your PHP max upload size is quite small. With your current setup, you may not upload files larger than {$a->%number} MB. This might be a problem when trying to upload H5Ps, images and videos. Please consider to increase it to more than 5MB.' => 'maxuploadsizetoosmall',

            'Your PHP version does not support ZipArchive.' => 'noziparchive',

            'Your PHP version is outdated. H5P requires version 5.2 to function properly. Version 5.6 or later is recommended.' => 'oldphpversion',

            'Your server does not have SSL enabled. SSL should be enabled to ensure a secure connection with the H5P hub.' => 'sslnotenabled',

            'Your site was successfully registered with the H5P Hub.' => 'successfullyregisteredwithhub',

            'Sharing <strong>:title</strong>' => 'mainTitle',

            'Edit info for <strong>:title</strong>' => 'editInfoTitle',

            'Back' => 'back',

            'Next' => 'next',

            'Review info' => 'reviewInfo',

            'Share' => 'share',

            'Save changes' => 'saveChanges',

            'Register on the H5P Hub' => 'registerOnHub',

            'Save account settings' => 'updateRegistrationOnHub',

            'Required Info' => 'requiredInfo',

            'Optional Info' => 'optionalInfo',

            'Review & Share' => 'reviewAndShare',

            'Review & Save' => 'reviewAndSave',

            'Shared' => 'shared',

            'Step :step of :total' => 'currentStep',

            'All content details can be edited after sharing' => 'sharingNote',

            'Select a license for your content' => 'licenseDescription',

            'Select a license version' => 'licenseVersionDescription',

            'Disciplines' => 'disciplineLabel',

            'You can select multiple disciplines' => 'disciplineDescription',

            'You can select up to :numDisciplines disciplines' => 'disciplineLimitReachedMessage',

            'Type to search for disciplines' => 'discipline:searchPlaceholder',

            'in' => 'discipline:in',

            'Dropdown button' => 'discipline:dropdownButton',

            'Remove :chip from the list' => 'removeChip',

            'Add keywords' => 'keywordsPlaceholder',

            'Keywords' => 'keywords',

            'You can add multiple keywords separated by commas. Press "Enter" or "Add" to confirm keywords' => 'keywordsDescription',

            'Alt text' => 'altText',

            'Please review the info below before you share' => 'reviewMessage',

            'Sub-content (images, questions etc.) will be shared under :license unless otherwise specified in the authoring tool' => 'subContentWarning',

            'Disciplines' => 'disciplines',

            'Short description' => 'shortDescription',

            'Long description' => 'longDescription',

            'Icon' => 'icon',

            'Screenshots' => 'screenshots',

            'Help me choose a license' => 'helpChoosingLicense',

            'Share failed.' => 'shareFailed',

            'Editing failed.' => 'editingFailed',

            'Something went wrong, please try to share again.' => 'shareTryAgain',

            'Please wait...' => 'pleaseWait',

            'Language' => 'language',

            'Level' => 'level',

            'Short description of your content' => 'shortDescriptionPlaceholder',

            'Long description of your content' => 'longDescriptionPlaceholder',

            'Description' => 'description',

            '640x480px. If not selected content will use category icon' => 'iconDescription',

            'Add up to five screenshots of your content' => 'screenshotsDescription',

            'Submitted!' => 'submitted',

            'Is now submitted to H5P Hub' => 'isNowSubmitted',

            'A change has been submited for' => 'changeHasBeenSubmitted',

            'Your content will normally be available in the Hub within one business day.' => 'contentAvailable',

            'Your content will update soon' => 'contentUpdateSoon',

            'Content License Info' => 'contentLicenseTitle',

            'Click on a specific license to get info about proper usage' => 'licenseDialogDescription',

            'Publisher' => 'publisherFieldTitle',

            'This will display as the "Publisher name" on shared content' => 'publisherFieldDescription',

            'Email Address' => 'emailAddress',

            'Publisher description' => 'publisherDescription',

            'This will be displayed under "Publisher info" on shared content' => 'publisherDescriptionText',

            'Contact Person' => 'contactPerson',

            'Phone' => 'phone',

            'Address' => 'address',

            'City' => 'city',

            'Zip' => 'zip',

            'Country' => 'country',

            'Organization logo or avatar' => 'logoUploadText',

            'I accept the <a href=":url" target="_blank">terms of use</a>' => 'acceptTerms',

            'You have successfully registered an account on the H5P Hub' => 'successfullyRegistred',

            'You account details can be changed' => 'successfullyRegistredDescription',

            'Your H5P Hub account settings have successfully been changed' => 'successfullyUpdated',

            'here' => 'accountDetailsLinkText',

            'H5P Hub Registration' => 'registrationTitle',

            'An error occurred' => 'registrationFailed',

            'We were not able to create an account at this point. Something went wrong. Try again later.' => 'registrationFailedDescription',

            ':length is the maximum number of characters' => 'maxLength',

            'Keyword already exists!' => 'keywordExists',

            'License details' => 'licenseDetails',

            'Remove' => 'remove',

            'Remove image' => 'removeImage',

            'Cancel sharing' => 'cancelPublishConfirmationDialogTitle',

            'Are you sure you want to cancel the sharing process?' => 'cancelPublishConfirmationDialogDescription',

            'No' => 'cancelPublishConfirmationDialogCancelButtonText',

            'Yes' => 'cancelPublishConfirmationDialogConfirmButtonText',

            'Add' => 'add',

            'Typical age' => 'age',

            'The target audience of this content. Possible input formats separated by commas: "1,34-45,-50,59-".' => 'ageDescription',

            'Invalid input format for Typical age. Possible input formats separated by commas: "1, 34-45, -50, -59-".' => 'invalidAge',

            'H5P will reach out to the contact person in case there are any issues with the content shared by the publisher. The contact person\'s name or other information will not be published or shared with third parties' => 'contactPersonDescription',

            'The email address will be used by H5P to reach out to the publisher in case of any issues with the content or in case the publisher needs to recover their account. It will not be published or shared with any third parties' => 'emailAddressDescription',

            'Copyrighted material cannot be shared in the H5P Content Hub. If the content is licensed with a OER friendly license like Creative Commons, please choose the appropriate license. If not this content cannot be shared.' => 'copyrightWarning',

            'Keywords already exists!' => 'keywordsExits',

            'Some of these keywords already exist' => 'someKeywordsExits',

            'Assistive Technologies label' => 'a11yTitle:label',

            'width' => 'width',

            'height' => 'height',

            'Missing main library @library' => 'missingmainlibrary',

        ];

        if (isset($translationsmap[$message])) {

            return get_string($translationsmap[$message], 'core_h5p', $replacements);

        }

        debugging("String translation cannot be found. Please add a string definition for '" .

            $message . "' in the core_h5p component.", DEBUG_DEVELOPER);

        return $message;

    }

    /**

     * Get URL to file in the specifimake_pluginfile_urlc library.

     * Implements getLibraryFileUrl.

     *

     * @param string $libraryfoldername The name or path of the library's folder

     * @param string $filename The file name

     * @return string URL to file

     */

    public function getLibraryFileUrl($libraryfoldername, $filename) {

        global $DB;

        // Remove unnecessary slashes (first and last, if present) from the path to the folder

        // of the library file.

        $libraryfilepath = trim($libraryfoldername, '/');

        // Get the folder name of the library from the path.

        // The first element should represent the folder name of the library.

        $libfoldername = explode('/', $libraryfilepath)[0];

        $factory = new \core_h5p\factory();

        $core = $factory->get_core();

        // The provided folder name of the library must have a valid format (can be parsed).

        // The folder name is parsed with a purpose of getting the library related information

        // such as 'machineName', 'majorVersion' and 'minorVersion'.

        // This information is later used to retrieve the library ID.

        if (!$libdata = $core->libraryFromString($libfoldername, true)) {

            debugging('The provided string value "' . $libfoldername .

                '" is not a valid name for a library folder.', DEBUG_DEVELOPER);

            return;

        }

        $params = array(

            'machinename' => $libdata['machineName'],

            'majorversion' => $libdata['majorVersion'],

            'minorversion' => $libdata['minorVersion']

        );

        $libraries = $DB->get_records('h5p_libraries', $params, 'patchversion DESC', 'id',

            0, 1);

        if (!$library = reset($libraries)) {

            debugging('The library "' . $libfoldername . '" does not exist.', DEBUG_DEVELOPER);

            return;

        }

        $context = \context_system::instance();

        return \moodle_url::make_pluginfile_url($context->id, 'core_h5p', 'libraries',

            $library->id, '/' . $libraryfilepath . '/', $filename)->out();

    }

    /**

     * Get the Path to the last uploaded h5p.

     * Implements getUploadedH5PFolderPath.

     *

     * @param string $setpath The path to the folder of the last uploaded h5p

     * @return string Path to the folder where the last uploaded h5p for this session is located

     */

    public function getUploadedH5pFolderPath($setpath = null) {

        if ($setpath !== null) {

            $this->lastuploadedfolder = $setpath;

        }

        if (!isset($this->lastuploadedfolder)) {

            throw new \coding_exception('Using getUploadedH5pFolderPath() before path is set');

        }

        return $this->lastuploadedfolder;

    }

    /**

     * Get the path to the last uploaded h5p file.

     * Implements getUploadedH5PPath.

     *

     * @param string $setpath The path to the last uploaded h5p

     * @return string Path to the last uploaded h5p

     */

    public function getUploadedH5pPath($setpath = null) {

        if ($setpath !== null) {

            $this->lastuploadedfile = $setpath;

        }

        if (!isset($this->lastuploadedfile)) {

            throw new \coding_exception('Using getUploadedH5pPath() before path is set');

        }

        return $this->lastuploadedfile;

    }

    /**

     * Load addon libraries.

     * Implements loadAddons.

     *

     * @return array The array containing the addon libraries

     */

    public function loadAddons() {

        global $DB;

        $addons = array();

        $records = $DB->get_records_sql(

                "SELECT l1.id AS library_id,

                            l1.machinename AS machine_name,

                            l1.majorversion AS major_version,

                            l1.minorversion AS minor_version,

                            l1.patchversion AS patch_version,

                            l1.addto AS add_to,

                            l1.preloadedjs AS preloaded_js,

                            l1.preloadedcss AS preloaded_css

                       FROM {h5p_libraries} l1

                  LEFT JOIN {h5p_libraries} l2

                         ON l1.machinename = l2.machinename

                        AND (l1.majorversion < l2.majorversion

                             OR (l1.majorversion = l2.majorversion

                                 AND l1.minorversion < l2.minorversion))

                      WHERE l1.addto IS NOT NULL

                        AND l2.machinename IS NULL");

        // NOTE: These are treated as library objects but are missing the following properties:

        // title, droplibrarycss, fullscreen, runnable, semantics.

        // Extract num from records.

        foreach ($records as $addon) {

            $addons[] = H5PCore::snakeToCamel($addon);

        }

        return $addons;

    }

    /**

     * Load config for libraries.

     * Implements getLibraryConfig.

     *

     * @param array|null $libraries List of libraries

     * @return array|null The library config if it exists, null otherwise

     */

    public function getLibraryConfig($libraries = null) {

        global $CFG;

        return isset($CFG->core_h5p_library_config) ? $CFG->core_h5p_library_config : null;

    }

    /**

     * Get a list of the current installed libraries.

     * Implements loadLibraries.

     *

     * @return array Associative array containing one entry per machine name.

     *               For each machineName there is a list of libraries(with different versions).

     */

    public function loadLibraries() {

        global $DB;

        $results = $DB->get_records('h5p_libraries', [], 'title ASC, majorversion ASC, minorversion ASC',

            'id, machinename AS machine_name, majorversion AS major_version, minorversion AS minor_version,

            patchversion AS patch_version, runnable, title, enabled');

        $libraries = array();

        foreach ($results as $library) {

            $libraries[$library->machine_name][] = $library;

        }

        return $libraries;

    }

    /**

     * Returns the URL to the library admin page.

     * Implements getAdminUrl.

     *

     * @return string URL to admin page

     */

    public function getAdminUrl() {

        // Not supported.

    }

    /**

     * Return the library's ID.

     * Implements getLibraryId.

     *

     * @param string $machinename The librarys machine name

     * @param string $majorversion Major version number for library (optional)

     * @param string $minorversion Minor version number for library (optional)

     * @return int|bool Identifier, or false if non-existent

     */

    public function getLibraryId($machinename, $majorversion = null, $minorversion = null) {

        global $DB;

        $params = array(

            'machinename' => $machinename

        );

        if ($majorversion !== null) {

            $params['majorversion'] = $majorversion;

        }

        if ($minorversion !== null) {

            $params['minorversion'] = $minorversion;

        }

        $libraries = $DB->get_records('h5p_libraries', $params,

            'majorversion DESC, minorversion DESC, patchversion DESC', 'id', 0, 1);

        // Get the latest version which matches the input parameters.

        if ($libraries) {

            $library = reset($libraries);

            return $library->id ?? false;

        }

        return false;

    }

    /**

     * Get allowed file extension list.

     * Implements getWhitelist.

     *

     * The default extension list is part of h5p, but admins should be allowed to modify it.

     *

     * @param boolean $islibrary TRUE if this is the whitelist for a library. FALSE if it is the whitelist

     *                           for the content folder we are getting.

     * @param string $defaultcontentwhitelist A string of file extensions separated by whitespace.

     * @param string $defaultlibrarywhitelist A string of file extensions separated by whitespace.

     * @return string A string containing the allowed file extensions separated by whitespace.

     */

    public function getWhitelist($islibrary, $defaultcontentwhitelist, $defaultlibrarywhitelist) {

        return $defaultcontentwhitelist . ($islibrary ? ' ' . $defaultlibrarywhitelist : '');

    }

    /**

     * Is the library a patched version of an existing library?

     * Implements isPatchedLibrary.

     *

     * @param array $library An associative array containing:

     *                       - machineName: The library machine name

     *                       - majorVersion: The librarys major version

     *                       - minorVersion: The librarys minor version

     *                       - patchVersion: The librarys patch version

     * @return boolean TRUE if the library is a patched version of an existing library FALSE otherwise

     */

    public function isPatchedLibrary($library) {

        global $DB;

        $sql = "SELECT id

                  FROM {h5p_libraries}

                 WHERE machinename = :machinename

                   AND majorversion = :majorversion

                   AND minorversion = :minorversion

                   AND patchversion < :patchversion";

        $library = $DB->get_records_sql(

            $sql,

            array(

                'machinename' => $library['machineName'],

                'majorversion' => $library['majorVersion'],

                'minorversion' => $library['minorVersion'],

                'patchversion' => $library['patchVersion']

            ),

            0,

            1

        );

        return !empty($library);

    }

    /**

     * Is H5P in development mode?

     * Implements isInDevMode.

     *

     * @return boolean TRUE if H5P development mode is active FALSE otherwise

     */

    public function isInDevMode() {

        return false; // Not supported (Files in moodle not editable).

    }

    /**

     * Is the current user allowed to update libraries?

     * Implements mayUpdateLibraries.

     *

     * @return boolean TRUE if the user is allowed to update libraries,

     *                 FALSE if the user is not allowed to update libraries.

     */

    public function mayUpdateLibraries() {

        return helper::can_update_library($this->get_file());

    }

    /**

     * Get the .h5p file.

     *

     * @return \stored_file The .h5p file.

     */

    public function get_file(): \stored_file {

        if (!isset($this->file)) {

            throw new \coding_exception('Using get_file() before file is set');

        }

        return $this->file;

    }

    /**

     * Set the .h5p file.

     *

     * @param  stored_file $file The .h5p file.

     */

    public function set_file(\stored_file $file): void {

        $this->file = $file;

    }

    /**

     * Store data about a library.

     * Implements saveLibraryData.

     *

     * Also fills in the libraryId in the libraryData object if the object is new.

     *

     * @param array $librarydata Associative array containing:

     *                           - libraryId: The id of the library if it is an existing library

     *                           - title: The library's name

     *                           - machineName: The library machineName

     *                           - majorVersion: The library's majorVersion

     *                           - minorVersion: The library's minorVersion

     *                           - patchVersion: The library's patchVersion

     *                           - runnable: 1 if the library is a content type, 0 otherwise

     *                           - fullscreen(optional): 1 if the library supports fullscreen, 0 otherwise

     *                           - embedtypes: list of supported embed types

     *                           - preloadedJs(optional): list of associative arrays containing:

     *                             - path: path to a js file relative to the library root folder

     *                           - preloadedCss(optional): list of associative arrays containing:

     *                             - path: path to css file relative to the library root folder

     *                           - dropLibraryCss(optional): list of associative arrays containing:

     *                             - machineName: machine name for the librarys that are to drop their css

     *                           - semantics(optional): Json describing the content structure for the library

     *                           - metadataSettings(optional): object containing:

     *                             - disable: 1 if metadata is disabled completely

     *                             - disableExtraTitleField: 1 if the title field is hidden in the form

     * @param bool $new Whether it is a new or existing library.

     */

    public function saveLibraryData(&$librarydata, $new = true) {

        global $DB;

        // Some special properties needs some checking and converting before they can be saved.

        $preloadedjs = $this->library_parameter_values_to_csv($librarydata, 'preloadedJs', 'path');

        $preloadedcss = $this->library_parameter_values_to_csv($librarydata, 'preloadedCss', 'path');

        $droplibrarycss = $this->library_parameter_values_to_csv($librarydata, 'dropLibraryCss', 'machineName');

        if (!isset($librarydata['semantics'])) {

            $librarydata['semantics'] = '';

        }

        if (!isset($librarydata['fullscreen'])) {

            $librarydata['fullscreen'] = 0;

        }

        $embedtypes = '';

        if (isset($librarydata['embedTypes'])) {

            $embedtypes = implode(', ', $librarydata['embedTypes']);

        }

        $library = (object) array(

            'title' => $librarydata['title'],

            'machinename' => $librarydata['machineName'],

            'majorversion' => $librarydata['majorVersion'],

            'minorversion' => $librarydata['minorVersion'],

            'patchversion' => $librarydata['patchVersion'],

            'runnable' => $librarydata['runnable'],

            'fullscreen' => $librarydata['fullscreen'],

            'embedtypes' => $embedtypes,

            'preloadedjs' => $preloadedjs,

            'preloadedcss' => $preloadedcss,

            'droplibrarycss' => $droplibrarycss,

            'semantics' => $librarydata['semantics'],

            'addto' => isset($librarydata['addTo']) ? json_encode($librarydata['addTo']) : null,

            'coremajor' => isset($librarydata['coreApi']['majorVersion']) ? $librarydata['coreApi']['majorVersion'] : null,

            'coreminor' => isset($librarydata['coreApi']['majorVersion']) ? $librarydata['coreApi']['minorVersion'] : null,

            'metadatasettings' => isset($librarydata['metadataSettings']) ? $librarydata['metadataSettings'] : null,

        );

        if ($new) {

            // Create new library and keep track of id.

            $library->id = $DB->insert_record('h5p_libraries', $library);

            $librarydata['libraryId'] = $library->id;

        } else {

            // Update library data.

            $library->id = $librarydata['libraryId'];

            // Save library data.

            $DB->update_record('h5p_libraries', $library);

            // Remove old dependencies.

            $this->deleteLibraryDependencies($librarydata['libraryId']);

        }

    }

    /**

     * Insert new content.

     * Implements insertContent.

     *

     * @param array $content An associative array containing:

     *                       - id: The content id

     *                       - params: The content in json format

     *                       - library: An associative array containing:

     *                         - libraryId: The id of the main library for this content

     *                       - disable: H5P Button display options

     *                       - pathnamehash: The pathnamehash linking the record with the entry in the mdl_files table

     *                       - contenthash: The contenthash linking the record with the entry in the mdl_files table

     * @param int $contentmainid Main id for the content if this is a system that supports versions

     * @return int The ID of the newly inserted content

     */

    public function insertContent($content, $contentmainid = null) {

        return $this->updateContent($content);

    }

    /**

     * Update old content or insert new content.

     * Implements updateContent.

     *

     * @param array $content An associative array containing:

     *                       - id: The content id

     *                       - params: The content in json format

     *                       - library: An associative array containing:

     *                         - libraryId: The id of the main library for this content

     *                       - disable: H5P Button display options

     *                       - pathnamehash: The pathnamehash linking the record with the entry in the mdl_files table

     *                       - contenthash: The contenthash linking the record with the entry in the mdl_files table

     * @param int $contentmainid Main id for the content if this is a system that supports versions

     * @return int The ID of the newly inserted or updated content

     */

    public function updateContent($content, $contentmainid = null) {

        global $DB;

        // If the libraryid declared in the package is empty, get the latest version.

        if (empty($content['library']['libraryId'])) {

            $mainlibrary = $this->get_latest_library_version($content['library']['machineName']);

            if (empty($mainlibrary)) {

                // Raise an error if the main library is not defined and the latest version doesn't exist.

                $message = $this->t('Missing required library @library', ['@library' => $content['library']['machineName']]);

                $this->setErrorMessage($message, 'missing-required-library');

                return false;

            }

            $content['library']['libraryId'] = $mainlibrary->id;

        }

        $content['disable'] = $content['disable'] ?? null;

        // Add title to 'params' to use in the editor.

        if (!empty($content['title'])) {

            $params = json_decode($content['params']);

            $params->title = $content['title'];

            $content['params'] = json_encode($params);

        }

        // Add metadata to 'params'.

        if (!empty($content['metadata'])) {

            $params = json_decode($content['params']);

            $params->metadata = $content['metadata'];

            $content['params'] = json_encode($params);

        }

        $data = [

            'jsoncontent' => $content['params'],

            'displayoptions' => $content['disable'],

            'mainlibraryid' => $content['library']['libraryId'],

            'timemodified' => time(),

            'filtered' => null,

        ];

        if (isset($content['pathnamehash'])) {

            $data['pathnamehash'] = $content['pathnamehash'];

        }

        if (isset($content['contenthash'])) {

            $data['contenthash'] = $content['contenthash'];

        }

        if (!isset($content['id'])) {

            $data['pathnamehash'] = $data['pathnamehash'] ?? '';

            $data['contenthash'] = $data['contenthash'] ?? '';

            $data['timecreated'] = $data['timemodified'];

            $id = $DB->insert_record('h5p', $data);

        } else {

            $id = $data['id'] = $content['id'];

            $DB->update_record('h5p', $data);

        }

        return $id;

    }

    /**

     * Resets marked user data for the given content.

     * Implements resetContentUserData.

     *

     * @param int $contentid The h5p content id

     */

    public function resetContentUserData($contentid) {

        global $DB;

        // Get the component associated to the H5P content to reset.

        $h5p = $DB->get_record('h5p', ['id' => $contentid]);

        if (!$h5p) {

            return;

        }

        $fs = get_file_storage();

        $file = $fs->get_file_by_hash($h5p->pathnamehash);

        if (!$file) {

            return;

        }

        // Reset user data.

        try {

            $xapihandler = handler::create($file->get_component());

            // Reset only entries with 'state' as stateid (the ones restored shouldn't be restored, because the H5P

            // content hasn't been created yet).

            $xapihandler->reset_states($file->get_contextid(), null, 'state');

        } catch (xapi_exception $exception) {

            // This component doesn't support xAPI State, so no content needs to be reset.

            return;

        }

    }

    /**

     * Save what libraries a library is depending on.

     * Implements saveLibraryDependencies.

     *

     * @param int $libraryid Library Id for the library we're saving dependencies for

     * @param array $dependencies List of dependencies as associative arrays containing:

     *                            - machineName: The library machineName

     *                            - majorVersion: The library's majorVersion

     *                            - minorVersion: The library's minorVersion

     * @param string $dependencytype The type of dependency

     */

    public function saveLibraryDependencies($libraryid, $dependencies, $dependencytype) {

        global $DB;

        foreach ($dependencies as $dependency) {

            // Find dependency library.

            $dependencylibrary = $DB->get_record('h5p_libraries',

                array(

                    'machinename' => $dependency['machineName'],

                    'majorversion' => $dependency['majorVersion'],

                    'minorversion' => $dependency['minorVersion']