<?php
// This file is part of the htmlcert module for 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/>.

/**
 * Edit the htmlcert settings.
 *
 * @package    mod_htmlcert
 * @copyright  2013 Mark Nelson <markn@moodle.com>, 2021 Klaus-Uwe Mitterer <kumitterer@kumi.systems>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

require_once('../../config.php');

$tid = optional_param('tid', 0, PARAM_INT);
$action = optional_param('action', '', PARAM_ALPHA);
if ($action) {
    $actionid = required_param('aid', PARAM_INT);
}
$confirm = optional_param('confirm', 0, PARAM_INT);

// Edit an existing template.
if ($tid) {
    // Create the template object.
    $template = $DB->get_record('htmlcert_templates', array('id' => $tid), '*', MUST_EXIST);
    $template = new \mod_htmlcert\template($template);
    // Set the context.
    $contextid = $template->get_contextid();
    // Set the page url.
    $pageurl = new moodle_url('/mod/htmlcert/edit.php', array('tid' => $tid));
} else { // Adding a new template.
    // Need to supply the contextid.
    $contextid = required_param('contextid', PARAM_INT);
    // Set the page url.
    $pageurl = new moodle_url('/mod/htmlcert/edit.php', array('contextid' => $contextid));
}

$context = context::instance_by_id($contextid);
if ($context->contextlevel == CONTEXT_MODULE) {
    $cm = get_coursemodule_from_id('htmlcert', $context->instanceid, 0, false, MUST_EXIST);
    require_login($cm->course, false, $cm);

    $htmlcert = $DB->get_record('htmlcert', ['id' => $cm->instance], '*', MUST_EXIST);
    $title = $htmlcert->name;
    $heading = format_string($title);
} else {
    require_login();
    $title = $SITE->fullname;
    $heading = $title;
}

require_capability('mod/htmlcert:manage', $context);

// Set up the page.
\mod_htmlcert\page_helper::page_setup($pageurl, $context, $title);

if ($context->contextlevel == CONTEXT_SYSTEM) {
    // We are managing a template - add some navigation.
    $PAGE->navbar->add(get_string('managetemplates', 'htmlcert'),
        new moodle_url('/mod/htmlcert/manage_templates.php'));
    if (!$tid) {
        $PAGE->navbar->add(get_string('edithtmlcert', 'htmlcert'));
    } else {
        $PAGE->navbar->add(get_string('edithtmlcert', 'htmlcert'),
            new moodle_url('/mod/htmlcert/edit.php', ['tid' => $tid]));
    }
}

if ($tid) {
    $mform = new \mod_htmlcert\edit_form($pageurl, array('tid' => $tid));
    // Set the name for the form.
    $mform->set_data(array('name' => $template->get_name(), 'html' => ''));
} else {
    $mform = new \mod_htmlcert\edit_form($pageurl);
}

if ($data = $mform->get_data()) {
    // If there is no id, then we are creating a template.
    if (!$tid) {
        $template = \mod_htmlcert\template::create($data->name, $contextid);
    }

    // Save any data for the template.
    $template->save($data);

    // Check if we want to preview this custom certificate.
    if (!empty($data->previewbtn)) {
        $template->generate_pdf(true);
        exit();
    }

    // Redirect to the editing page to show form with recent updates.
    $url = new moodle_url('/mod/htmlcert/edit.php', array('tid' => $template->get_id()));
    redirect($url);
}

echo $OUTPUT->header();
echo $OUTPUT->heading($heading);
$mform->display();
if ($tid && $context->contextlevel == CONTEXT_MODULE) {
    $loadtemplateurl = new moodle_url('/mod/htmlcert/load_template.php', array('tid' => $tid));
    $loadtemplateform = new \mod_htmlcert\load_template_form($loadtemplateurl, array('context' => $context), 'post',
        '', array('id' => 'loadtemplateform'));
    $loadtemplateform->display();
}
echo $OUTPUT->footer();