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✏️ Editing: external_backpack.php

<?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/>.

/**
 * External backpack form
 *
 * @package    core_badges
 * @copyright  2019 Damyon Wiese
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

namespace core_badges\form;
defined('MOODLE_INTERNAL') || die();

require_once($CFG->libdir.'/formslib.php');

/**
 * Backpack form class.
 *
 * @package    core_badges
 * @copyright  2019 Damyon Wiese
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class external_backpack extends \moodleform {

/**
     * Create the form.
     *
     */
    public function definition() {
        global $CFG;

$mform = $this->_form;
        $backpack = false;

if (isset($this->_customdata['externalbackpack'])) {
            $backpack = $this->_customdata['externalbackpack'];
        }

$mform->addElement('hidden', 'action', 'edit');
        $mform->setType('action', PARAM_ALPHA);

$apiversions = badges_get_badge_api_versions();
        $mform->addElement('select', 'apiversion', get_string('apiversion', 'core_badges'), $apiversions);
        $mform->setType('apiversion', PARAM_RAW);
        $mform->setDefault('apiversion', OPEN_BADGES_V2P1);
        $mform->addRule('apiversion', null, 'required', null, 'client');

$mform->addElement('text', 'backpackweburl', get_string('backpackweburl', 'core_badges'));
        $mform->setType('backpackweburl', PARAM_URL);
        $mform->addRule('backpackweburl', null, 'required', null, 'client');
        $mform->addRule('backpackweburl', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');

$mform->addElement('text', 'backpackapiurl',  get_string('backpackapiurl', 'core_badges'));
        $mform->setType('backpackapiurl', PARAM_URL);
        $mform->addRule('backpackapiurl', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');

$mform->addElement('hidden', 'id', ($backpack->id ?? null));
        $mform->setType('id', PARAM_INT);
        $mform->addElement('hidden', 'badgebackpack', 0);
        $mform->setType('badgebackpack', PARAM_INT);
        $mform->addElement('hidden', 'userid', 0);
        $mform->setType('userid', PARAM_INT);
        $mform->addElement('hidden', 'backpackuid', 0);
        $mform->setType('backpackuid', PARAM_INT);

$mform->addElement('advcheckbox', 'includeauthdetails', null, get_string('includeauthdetails', 'core_badges'));
        if (!empty($backpack->backpackemail) || !empty($backpack->password)) {
            $mform->setDefault('includeauthdetails', 1);
        }

$issuercontact = $CFG->badges_defaultissuercontact;
        $this->add_auth_fields($issuercontact);

if ($backpack) {
            $this->set_data($backpack);
        }

$mform->hideIf('includeauthdetails', 'apiversion', 'in', [OPEN_BADGES_V2P1]);
        $mform->hideIf('backpackemail', 'includeauthdetails');
        $mform->hideIf('backpackemail', 'apiversion', 'in', [OPEN_BADGES_V2P1]);
        $mform->hideIf('password', 'includeauthdetails');
        $mform->hideIf('password', 'apiversion', 'in', [OPEN_BADGES_V1, OPEN_BADGES_V2P1]);
        $mform->hideIf('backpackapiurl', 'apiversion', 'in', [OPEN_BADGES_V1, OPEN_BADGES_V2P1]);

// Disable short forms.
        $mform->setDisableShortforms();

$this->add_action_buttons();
    }

/**
     * Validate the data from the form.
     *
     * @param  array $data form data
     * @param  array $files form files
     * @return array An array of error messages.
     */
    public function validation($data, $files) {
        $errors = parent::validation($data, $files);

// Ensure backpackapiurl and backpackweburl are valid URLs.
        $isobv21 = isset($data['apiversion']) && $data['apiversion'] == OPEN_BADGES_V2P1;
        if (!$isobv21) {
            if (empty($data['backpackapiurl'])) {
                $errors['backpackapiurl'] = get_string('err_required', 'form');
            } else if (!preg_match('@^https?://.+@', $data['backpackapiurl'])) {
                $errors['backpackapiurl'] = get_string('invalidurl', 'badges');
            }
        }
        if (!empty($data['backpackweburl']) && !preg_match('@^https?://.+@', $data['backpackweburl'])) {
            $errors['backpackweburl'] = get_string('invalidurl', 'badges');
        }

return $errors;
    }

/**
     * Return submitted data if properly submitted or returns NULL if validation fails or
     * if there is no submitted data.
     *
     * @return object|void
     */
    public function get_data() {
        $data = parent::get_data();
        if ($data ) {
            if ((isset($data->includeauthdetails) && !$data->includeauthdetails)
                || (isset($data->apiversion) && $data->apiversion == 2.1)) {
                $data->backpackemail = "";
                $data->password = "";
            }

if ((isset($data->apiversion) && $data->apiversion == 1)) {
                $data->password = "";
            }
        }

return $data;
    }

/**
     * Add backpack specific auth details.
     *
     * @param string|null $email The email addressed provided or null if it's new.
     * @param bool $includepassword Include the password field. Defaults to true
     * @throws \coding_exception
     */
    protected function add_auth_fields(?string $email, bool $includepassword = true) {
        $mform = $this->_form;
        $emailstring = get_string('email');
        $passwordstring = get_string('password');
        $showpasswordhelp = false;
        if (!isset($this->_customdata['userbackpack'])) {
            $emailstring = get_string('defaultissuercontact', 'core_badges');
            $passwordstring = get_string('defaultissuerpassword', 'core_badges');
            $showpasswordhelp = true;
        }

$mform->addElement('text', 'backpackemail', $emailstring);
        $mform->setType('backpackemail', PARAM_EMAIL);
        $mform->setDefault('backpackemail', $email);

if ($includepassword) {
            $mform->addElement('passwordunmask', 'password', $passwordstring);
            $mform->setType('password', PARAM_RAW);
            if ($showpasswordhelp) {
                $mform->addHelpButton('password', 'defaultissuerpassword', 'badges');
            }
        }
    }
}

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