<?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/>.

/**
 * Lists all KB layouts in the database table, mdl_mootyper_layouts.
 *
 * @package    mod_mootyper
 * @copyright  2019 AL Rachels (drachels@drachels.com)
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later.
 */

use mod_mootyper\event\course_module_viewed;
use mod_mootyper\local\keyboards;

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

global $DB, $OUTPUT, $PAGE;

// Fetch URL parameters.
$id = optional_param('id', 0, PARAM_INT); // Course ID.
$cm = get_coursemodule_from_id('mootyper', $id, 0, false, MUST_EXIST);
$course = $DB->get_record('course', ['id' => $cm->course], '*', MUST_EXIST);

require_login($course, true, $cm);

$context = context_module::instance($cm->id);

$mootyper = $DB->get_record('mootyper', ['id' => $cm->instance], '*', MUST_EXIST);

// Print the page header.
$PAGE->set_url('/mod/mootyper/layouts.php', ['id' => $id]);
$PAGE->set_heading($course->fullname);

$renderer = $PAGE->get_renderer('mod_mootyper');

$returnedit = new moodle_url('/mod/mootyper/layouts.php', ['id' => $id]);

// Other things you may want to set - remove if not needed.
$PAGE->set_cacheable(false);

// Output starts here.
echo $OUTPUT->header();
echo $OUTPUT->heading(get_string('loheading', 'mootyper'));

// 20200226 Switched from course id to current MooTyper id so
// that I can use the current MooTyper keyboard background color.
$color3 = $mootyper->keybdbgc;

echo '<div align="left" style="font-size:1em;
     font-weight:bold;background: ' . $color3 . ';
     border:2px solid black;
     -webkit-border-radius:16px;
     -moz-border-radius:16px;border-radius:16px;"><table>';

$layouts = keyboards::get_keyboard_layouts_db();
// 20220126 Set up a return to page link to use after deleting a layout.
$jlinkklrem = $CFG->wwwroot . '/mod/mootyper/klrem.php?id=' . $id;

echo '<div class="container">';
echo '<table class="table table-hover">';
echo '<thead><tr><th>' . get_string('layout', 'mootyper') . '</th><th>' . get_string('deletekb', 'mootyper') . '</th>';
echo '</tr></thead>';
echo '<tbody>';

// 20220126 Changed to button with popup confirm. Only an admin can do a layout delete!
// 20260309 Improved anchor behavior: after deletion, scroll to next/previous row.
$layoutnames = array_values($layouts);
$layoutcount = count($layoutnames);
for ($i = 0; $i < $layoutcount; $i++) {
    $lo = $layoutnames[$i];
    $anchorid = 'layout-' . preg_replace('/[^a-zA-Z0-9_-]/', '', $lo);
    // Determine anchor for after delete: next layout, or previous if last.
    $nextanchor = '';
    if ($i < $layoutcount - 1) {
        $nextanchor = 'layout-' . preg_replace('/[^a-zA-Z0-9_-]/', '', $layoutnames[$i + 1]);
    } else if ($i > 0) {
        $nextanchor = 'layout-' . preg_replace('/[^a-zA-Z0-9_-]/', '', $layoutnames[$i - 1]);
    }
    $anchorparam = $nextanchor ? ('&anchor=' . $nextanchor) : '';
    echo '<tr id="' . $anchorid . '"><td>' . $lo . '</td><td>'
        . '<a onclick="return confirm(\'' . get_string('deletelsnconfirm', 'mootyper') . $lo
        . '\')" href="' . $jlinkklrem . '&kb=' . $lo . $anchorparam . '#' . $anchorid
        . '" class="btn btn-warning" style="border-radius: 8px">'
        . get_string('deletekblo', 'mootyper', $lo)
        . '</a></td></tr>';
}
echo '</tbody>';
echo '</table>';
echo '</div>';

// 20200226 Added a continue button that takes you back to the MooTyper you came from.
$url = $CFG->wwwroot . '/mod/mootyper/view.php?id=' . $id;
echo '<br><a href="' . $url
    . '" class="btn btn-primary" style="border-radius: 8px">'
    . get_string('returnto', 'mootyper', $mootyper->name)
    . '</a><br><br>';

echo $OUTPUT->footer();
