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highscores.php
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highscores.php
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<?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/>.
/**
* Provides the interface for viewing and adding high scores
*
* @package mod
* @subpackage customlesson
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @copyright 2012-2013 Silecs et Institut Mines-Télécom
* @notice customlesson is heavily based on the official lesson module and large portions of code are copied from there.
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
**/
/** include required files */
require_once('../../config.php');
require_once($CFG->dirroot.'/mod/customlesson/locallib.php');
$id = required_param('id', PARAM_INT); // Course Module ID
$mode = optional_param('mode', '', PARAM_ALPHA);
$link = optional_param('link', 0, PARAM_INT);
$cm = get_coursemodule_from_id('customlesson', $id, 0, false, MUST_EXIST);;
$course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
$lesson = new customlesson($DB->get_record('customlesson', array('id' => $cm->instance), '*', MUST_EXIST));
require_login($course, false, $cm);
$url = new moodle_url('/mod/customlesson/highscores.php', array('id'=>$id));
if ($mode !== '') {
$url->param('mode', $mode);
}
if ($link !== 0) {
$url->param('link', $link);
}
$PAGE->set_url($url);
$context = context_module::instance($cm->id);
switch ($mode) {
case 'add':
// Ensure that we came from view.php
if (!confirm_sesskey() or !data_submitted()) {
print_error('invalidformdata');
}
break;
case 'save':
if (confirm_sesskey() and $form = data_submitted($CFG->wwwroot.'/mod/customlesson/view.php')) {
$name = trim(optional_param('name', '', PARAM_CLEAN));
// Make sure it is not empty
if (empty($name)) {
$lesson->add_message(get_string('missingname', 'customlesson'));
$mode = 'add';
break;
}
// Check for censored words
$filterwords = explode(',', get_string('censorbadwords'));
foreach ($filterwords as $filterword) {
if (strstr($name, $filterword)) {
$lesson->add_message(get_string('namereject', 'customlesson'));
$mode = 'add';
break;
}
}
// Bad word was found
if ($mode == 'add') {
break;
}
$params = array ("lessonid" => $lesson->id, "userid" => $USER->id);
if (!$grades = $DB->get_records_select('customlesson_grades', "lessonid = :lessonid", $params, 'completed')) {
print_error('cannotfindfirstgrade', 'customlesson');
}
if (!$newgrade = $DB->get_record_sql("SELECT *
FROM {customlesson_grades}
WHERE lessonid = :lessonid
AND userid = :userid
ORDER BY completed DESC", $params, true)) {
print_error('cannotfindnewestgrade', 'customlesson');
}
// Check for multiple submissions
if ($DB->record_exists('customlesson_high_scores', array('gradeid' => $newgrade->id))) {
print_error('onpostperpage', 'customlesson');
}
// Find out if we need to delete any records
if ($highscores = $DB->get_records_sql("SELECT h.*, g.grade
FROM {customlesson_grades} g, {customlesson_high_scores} h
WHERE h.gradeid = g.id
AND h.lessonid = :lessonid
ORDER BY g.grade DESC", $params)) {
// Only count unique scores in our total for max high scores
$uniquescores = array();
foreach ($highscores as $highscore) {
$uniquescores[$highscore->grade] = 1;
}
if (count($uniquescores) >= $lesson->maxhighscores) {
// Top scores list is full, might need to delete a score
$flag = true;
// See if the new score is already listed in the top scores list
// if it is listed, then dont need to delete any records
foreach ($highscores as $highscore) {
if ($newgrade->grade == $highscore->grade) {
$flag = false;
}
}
if ($flag) {
// Pushing out the lowest score (could be multiple records)
$lowscore = 0;
foreach ($highscores as $highscore) {
if (empty($lowscore) or $lowscore > $highscore->grade) {
$lowscore = $highscore->grade;
}
}
// Now, delete all high scores with the low score
foreach ($highscores as $highscore) {
if ($highscore->grade == $lowscore) {
$DB->delete_records('customlesson_high_scores', array('id' => $highscore->id));
}
}
}
}
}
$newhighscore = new stdClass;
$newhighscore->lessonid = $lesson->id;
$newhighscore->userid = $USER->id;
$newhighscore->gradeid = $newgrade->id;
$newhighscore->nickname = $name;
$DB->insert_record('customlesson_high_scores', $newhighscore);
// Log it
add_to_log($course->id, 'customlesson', 'update highscores', "highscores.php?id=$cm->id", $name, $cm->id);
$lesson->add_message(get_string('postsuccess', 'customlesson'), 'notifysuccess');
redirect("$CFG->wwwroot/mod/customlesson/highscores.php?id=$cm->id&link=1");
} else {
print_error('invalidformdata');
}
break;
}
// Log it
add_to_log($course->id, 'customlesson', 'view highscores', "highscores.php?id=$cm->id", $lesson->name, $cm->id);
$lessonoutput = $PAGE->get_renderer('mod_customlesson');
echo $lessonoutput->header($lesson, $cm, 'highscores', false, null, get_string('viewhighscores', 'customlesson'));
switch ($mode) {
case 'add':
echo $lessonoutput->add_highscores_form($lesson);
break;
default:
$params = array ("lessonid" => $lesson->id);
if (!$grades = $DB->get_records_select("customlesson_grades", "lessonid = :lessonid", $params, "completed")) {
$grades = array();
}
echo $OUTPUT->heading(get_string("topscorestitle", "customlesson", $lesson->maxhighscores), 4);
if (!$highscores = $DB->get_records_select("customlesson_high_scores", "lessonid = :lessonid", $params)) {
echo $OUTPUT->heading(get_string("nohighscores", "customlesson"), 3);
} else {
foreach ($highscores as $highscore) {
$grade = $grades[$highscore->gradeid]->grade;
$topscores[$grade][] = $highscore->nickname;
}
krsort($topscores);
$table = new html_table();
$table->align = array('center', 'left', 'right');
$table->wrap = array();
$table->width = "30%";
$table->cellspacing = '10px';
$table->size = array('*', '*', '*');
$table->head = array(get_string("rank", "customlesson"), get_string('name'), get_string("scores", "customlesson"));
$printed = 0;
while (true) {
$temp = current($topscores);
$score = key($topscores);
$rank = $printed + 1;
sort($temp);
foreach ($temp as $student) {
$table->data[] = array($rank, $student, $score.'%');
}
$printed++;
if (!next($topscores) || !($printed < $lesson->maxhighscores)) {
break;
}
}
echo html_writer::table($table);
}
if (!has_capability('mod/customlesson:manage', $context)) { // teachers don't need the links
echo $OUTPUT->box_start('mdl-align');
echo $OUTPUT->box_start('lessonbutton standardbutton');
if ($link) {
echo html_writer::link(new moodle_url('/course/view.php', array('id'=>$course->id)), get_string("returntocourse", "customlesson"));
} else {
echo html_writer::link(new moodle_url('/course/view.php', array('id'=>$course->id)), get_string("cancel", "customlesson")). ' ';
echo html_writer::link(new moodle_url('/mod/customlesson/view.php', array('id'=>$cm->id, 'viewed'=>'1')), get_string("startlesson", "customlesson"));
}
echo $OUTPUT->box_end();
echo $OUTPUT->box_end();
}
break;
}
echo $lessonoutput->footer();