template.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/>.

/**
 * Create or edit a template.
 *
 * @package    local_bbcomailing
 * @copyright  2026 David Herney @ BambuCo
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

use core\output\html_writer;

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

require_login();
$context = context_system::instance();
require_capability('local/bbcomailing:manage', $context);

$id = optional_param('id', 0, PARAM_INT);
$preview = optional_param('preview', 0, PARAM_BOOL);

$PAGE->set_context($context);
$PAGE->set_url(new moodle_url('/local/bbcomailing/template.php', ['id' => $id]));
$PAGE->set_title($id ? get_string('edittemplate', 'local_bbcomailing') : get_string('newtemplate', 'local_bbcomailing'));
$PAGE->set_heading($id ? get_string('edittemplate', 'local_bbcomailing') : get_string('newtemplate', 'local_bbcomailing'));
$PAGE->set_pagelayout('admin');

$indexurl = new moodle_url('/local/bbcomailing/templates.php');

// Editor options for file management.
$editoroptions = [
    'maxfiles' => -1,
    'maxbytes' => 0,
    'context' => $context,
    'noclean' => !empty(get_config('local_bbcomailing', 'allowrawhtml')),
];

$template = null;
if ($id) {
    $template = \local_bbcomailing\manager::get_template($id);
    if (!$template) {
        throw new moodle_exception('invalidrecord', 'error', '', 'local_bbcomailing_tpl');
    }
}

// Preview mode: render the template HTML and exit.
if ($preview && $template) {
    $PAGE->set_title(get_string('preview', 'local_bbcomailing') . ': ' . $template->name);
    $PAGE->set_heading(get_string('preview', 'local_bbcomailing') . ': ' . $template->name);
    echo $OUTPUT->header();
    $previewhtml = \local_bbcomailing\manager::get_preview($id, []);
    echo html_writer::div($previewhtml, 'template-preview border p-3');
    $backurl = new moodle_url('/local/bbcomailing/templates.php');
    echo html_writer::link($backurl, get_string('back'), ['class' => 'btn btn-secondary mt-3']);
    echo $OUTPUT->footer();
    die();
}

// Prepare form data.
$formdata = new stdClass();
$formdata->id = $id;
$formdata->usehtmleditor = 1;

if ($template) {
    $formdata->name = $template->name;
    $formdata->subject = $template->subject;
    $formdata->html = $template->html;
    $formdata->htmlformat = FORMAT_HTML;
    $formdata->html_text = $template->html;
} else {
    $formdata->html = '';
    $formdata->htmlformat = FORMAT_HTML;
}

// Prepare editor with file support: converts @@PLUGINFILE@@ to draft URLs.
$formdata = file_prepare_standard_editor(
    $formdata,
    'html',
    $editoroptions,
    $context,
    'local_bbcomailing',
    'templatehtml',
    $id ?: 0
);

$form = new \local_bbcomailing\form\template_form();
$form->set_data($formdata);

if ($form->is_cancelled()) {
    redirect($indexurl);
} else if ($data = $form->get_data()) {
    $record = new stdClass();
    $record->id = $data->id;
    $record->name = $data->name;
    $record->subject = $data->subject;
    $record->userid = $USER->id;

    if (!empty($data->usehtmleditor)) {
        // Save using standard editor flow: converts draft URLs to @@PLUGINFILE@@.
        $record->html = '';
        $record->htmlformat = FORMAT_HTML;
        $record->id = \local_bbcomailing\manager::save_template($record);

        $data->id = $record->id;
        $data = file_postupdate_standard_editor(
            $data,
            'html',
            $editoroptions,
            $context,
            'local_bbcomailing',
            'templatehtml',
            $record->id
        );
        $record->html = empty(get_config('local_bbcomailing', 'allowrawhtml'))
            ? \local_bbcomailing\manager::sanitize_email_html($data->html)
            : $data->html;
    } else {
        $record->html = empty(get_config('local_bbcomailing', 'allowrawhtml'))
            ? \local_bbcomailing\manager::sanitize_email_html($data->html_text)
            : $data->html_text;
        $record->id = \local_bbcomailing\manager::save_template($record);
    }

    // Update html content after file processing.
    \local_bbcomailing\manager::save_template($record);

    // Trigger event.
    $eventclass = $id ? \local_bbcomailing\event\template_updated::class : \local_bbcomailing\event\template_created::class;
    $eventclass::create([
        'context' => $context,
        'objectid' => $record->id,
    ])->trigger();

    redirect($indexurl, get_string('templatesaved', 'local_bbcomailing'));
}

echo $OUTPUT->header();
$form->display();
echo $OUTPUT->footer();