/**
* Gets the position of the score based in a given score (result/weight)
* and the exe_id based in the user list
* (NO Exercises in LPs )
* @param float $my_score user score to be compared *attention*
* $my_score = score/weight and not just the score
* @param int $my_exe_id exe id of the exercise
* (this is necessary because if 2 students have the same score the one
* with the minor exe_id will have a best position, just to be fair and FIFO)
* @param int $exercise_id
* @param string $course_code
* @param int $session_id
* @param array $user_list
* @param bool $return_string
*
* @return int the position of the user between his friends in a course
* (or course within a session)
*/
function get_exercise_result_ranking($my_score, $my_exe_id, $exercise_id, $course_code, $session_id = 0, $user_list = array(), $return_string = true)
{
//No score given we return
if (is_null($my_score)) {
return '-';
}
if (empty($user_list)) {
return '-';
}
$best_attempts = array();
foreach ($user_list as $user_data) {
$user_id = $user_data['user_id'];
$best_attempts[$user_id] = get_best_attempt_by_user($user_id, $exercise_id, $course_code, $session_id);
}
if (empty($best_attempts)) {
return 1;
} else {
$position = 1;
$my_ranking = array();
foreach ($best_attempts as $user_id => $result) {
if (!empty($result['exe_weighting']) && intval($result['exe_weighting']) != 0) {
$my_ranking[$user_id] = $result['exe_result'] / $result['exe_weighting'];
} else {
$my_ranking[$user_id] = 0;
}
}
//if (!empty($my_ranking)) {
asort($my_ranking);
$position = count($my_ranking);
if (!empty($my_ranking)) {
foreach ($my_ranking as $user_id => $ranking) {
if ($my_score >= $ranking) {
if ($my_score == $ranking) {
$exe_id = $best_attempts[$user_id]['exe_id'];
if ($my_exe_id < $exe_id) {
$position--;
}
} else {
$position--;
}
}
}
}
//}
$return_value = array('position' => $position, 'count' => count($my_ranking));
if ($return_string) {
if (!empty($position) && !empty($my_ranking)) {
$return_value = $position . '/' . count($my_ranking);
} else {
$return_value = '-';
}
}
return $return_value;
}
}
/**
* Shows the user detail progress (when clicking in the details link)
* @param int user id
* @param string course code
* @param int session id
* @return string html code
*/
static function show_course_detail($user_id, $course_code, $session_id)
{
$html = '';
if (isset($course_code)) {
$user_id = intval($user_id);
$session_id = intval($session_id);
$course = Database::escape_string($course_code);
$course_info = CourseManager::get_course_information($course);
//$course_id = $course_info['real_id'];
//$session_name = api_get_session_name($session_id);
$html .= Display::page_subheader($course_info['title']);
$html .= '<table class="data_table" width="100%">';
//Course details
$html .= '
<tr>
<th class="head" style="color:#000">'.get_lang('Exercices').'</th>
<th class="head" style="color:#000">'.get_lang('Attempts').'</th>
<th class="head" style="color:#000">'.get_lang('BestAttempt').'</th>
<th class="head" style="color:#000">'.get_lang('Ranking').'</th>
<th class="head" style="color:#000">'.get_lang('BestResultInCourse').'</th>
<th class="head" style="color:#000">'.get_lang('Statistics').' '.Display :: return_icon('info3.gif', get_lang('OnlyBestResultsPerStudent'), array('align' => 'absmiddle', 'hspace' => '3px')).'</th>
</tr>';
if (empty($session_id)) {
$user_list = CourseManager::get_user_list_from_course_code($course, $session_id, null, null, STUDENT);
} else {
$user_list = CourseManager::get_user_list_from_course_code($course, $session_id, null, null, 0);
}
//$exercise_list = get_all_exercises($course_info, $session_id, true);
// Show exercise results of invisible exercises? see BT#4091
$exercise_list = get_all_exercises(
$course_info,
$session_id,
false,
null,
false,
1
);
$to_graph_exercise_result = array();
if (!empty($exercise_list)) {
$score = $weighting = $exe_id = 0;
foreach ($exercise_list as $exercices) {
$exercise_obj = new Exercise($course_info['real_id']);
$exercise_obj->read($exercices['id']);
$visible_return = $exercise_obj->is_visible();
$score = $weighting = $attempts = 0;
//Getting count of attempts by user
$attempts = count_exercise_attempts_by_user(api_get_user_id(), $exercices['id'], $course_info['code'], $session_id);
$html .= '<tr class="row_even">';
$url = api_get_path(WEB_CODE_PATH)."exercice/overview.php?cidReq={$course_info['code']}&id_session=$session_id&exerciseId={$exercices['id']}";
if ($visible_return['value'] == true) {
$exercices['title'] = Display::url($exercices['title'], $url, array('target'=>SESSION_LINK_TARGET));
}
$html .= Display::tag('td', $exercices['title']);
//Exercise configuration show results or show only score
if ($exercices['results_disabled'] == 0 || $exercices['results_disabled'] == 2) {
//For graphics
$best_exercise_stats = get_best_exercise_results_by_user($exercices['id'], $course_info['code'], $session_id);
$to_graph_exercise_result[$exercices['id']] = array('title'=>$exercices['title'], 'data'=>$best_exercise_stats);
$latest_attempt_url = '';
$best_score = $position = $percentage_score_result = '-';
$graph = $normal_graph = null;
//Getting best results
$best_score_data = get_best_attempt_in_course($exercices['id'], $course_info['code'], $session_id);
$best_score = show_score($best_score_data['exe_result'], $best_score_data['exe_weighting']);
if ($attempts > 0) {
$exercise_stat = get_best_attempt_by_user(api_get_user_id(), $exercices['id'], $course_info['code'], $session_id);
if (!empty($exercise_stat)) {
//Always getting the BEST attempt
$score = $exercise_stat['exe_result'];
$weighting = $exercise_stat['exe_weighting'];
$exe_id = $exercise_stat['exe_id'];
$latest_attempt_url .= api_get_path(WEB_CODE_PATH).'exercice/result.php?id='.$exe_id.'&cidReq='.$course_info['code'].'&show_headers=1&id_session='.$session_id;
$percentage_score_result = Display::url(show_score($score, $weighting), $latest_attempt_url);
$my_score = 0;
if (!empty($weighting) && intval($weighting) != 0) {
$my_score = $score/$weighting;
}
//@todo this function slows the page
$position = get_exercise_result_ranking($my_score, $exe_id, $exercices['id'], $course_info['code'], $session_id, $user_list);
$graph = self::generate_exercise_result_thumbnail_graph($to_graph_exercise_result[$exercices['id']]);
$normal_graph = self::generate_exercise_result_graph($to_graph_exercise_result[$exercices['id']]);
}
}
$html .= Display::div($normal_graph, array('id'=>'main_graph_'.$exercices['id'],'class'=>'dialog', 'style'=>'display:none') );
if (empty($graph)) {
$graph = '-';
} else {
$graph = Display::url($graph, '#', array('id'=>$exercices['id'], 'class'=>'opener'));
}
$html .= Display::tag('td', $attempts, array('align'=>'center'));
$html .= Display::tag('td', $percentage_score_result, array('align'=>'center'));
$html .= Display::tag('td', $position, array('align'=>'center'));
$html .= Display::tag('td', $best_score, array('align'=>'center'));
$html .= Display::tag('td', $graph, array('align'=>'center'));
//$html .= Display::tag('td', $latest_attempt_url, array('align'=>'center', 'width'=>'25'));
} else {
// Exercise configuration NO results
$html .= Display::tag('td', $attempts, array('align'=>'center'));
$html .= Display::tag('td', '-', array('align'=>'center'));
$html .= Display::tag('td', '-', array('align'=>'center'));
$html .= Display::tag('td', '-', array('align'=>'center'));
$html .= Display::tag('td', '-', array('align'=>'center'));
}
$html .= '</tr>';
}
} else {
$html .= '<tr><td colspan="5" align="center">'.get_lang('NoEx').'</td></tr>';
}
$html .= '</table>';
//LP table results
$html .='<table class="data_table">';
$html .= Display::tag('th', get_lang('Learnpaths'), array('class'=>'head', 'style'=>'color:#000'));
$html .= Display::tag('th', get_lang('LatencyTimeSpent'), array('class'=>'head', 'style'=>'color:#000'));
$html .= Display::tag('th', get_lang('Progress'), array('class'=>'head', 'style'=>'color:#000'));
$html .= Display::tag('th', get_lang('Score'), array('class'=>'head', 'style'=>'color:#000'));
$html .= Display::tag('th', get_lang('LastConnexion'), array('class'=>'head', 'style'=>'color:#000'));
$html .= '</tr>';
$list = new LearnpathList(api_get_user_id(), $course_info['code'], $session_id, 'publicated_on ASC', true);
$lp_list = $list->get_flat_list();
if (!empty($lp_list) > 0) {
foreach($lp_list as $lp_id => $learnpath) {
$progress = Tracking::get_avg_student_progress($user_id, $course, array($lp_id), $session_id);
$last_connection_in_lp = Tracking::get_last_connection_time_in_lp($user_id, $course, $lp_id, $session_id);
$time_spent_in_lp = Tracking::get_time_spent_in_lp($user_id, $course, array($lp_id), $session_id);
$percentage_score = Tracking::get_avg_student_score($user_id, $course, array($lp_id), $session_id);
if (is_numeric($percentage_score)) {
$percentage_score = $percentage_score.'%';
} else {
$percentage_score = '0%';
}
$time_spent_in_lp = api_time_to_hms($time_spent_in_lp);
$html .= '<tr class="row_even">';
$url = api_get_path(WEB_CODE_PATH)."newscorm/lp_controller.php?cidReq={$course_code}&id_session=$session_id&lp_id=$lp_id&action=view";
$html .= Display::tag('td', Display::url($learnpath['lp_name'], $url, array('target'=>SESSION_LINK_TARGET)));
$html .= Display::tag('td', $time_spent_in_lp, array('align'=>'center'));
if (is_numeric($progress)) {
$progress = $progress.'%';
}
$html .= Display::tag('td', $progress, array('align'=>'center'));
$html .= Display::tag('td', $percentage_score);
$last_connection = '-';
if (!empty($last_connection_in_lp)) {
$last_connection = api_convert_and_format_date($last_connection_in_lp, DATE_TIME_FORMAT_LONG);
}
$html .= Display::tag('td', $last_connection, array('align'=>'center','width'=>'180px'));
$html .= "</tr>";
}
} else {
$html .= '<tr>
<td colspan="4" align="center">
'.get_lang('NoLearnpath').'
</td>
</tr>';
}
$html .='</table>';
}
return $html;
}