<?php
/* For licensing terms, see /license.txt */
/**
*   Session view
*   @package chamilo.session
*   @author Julio Montoya <gugli100@gmail.com>  Beeznest
*/

// Language files that should be included.
$language_file = array('courses', 'index','tracking','exercice', 'admin');
$cidReset = true;
require_once '../inc/global.inc.php';
$libpath = api_get_path(LIBRARY_PATH);

require_once $libpath.'course.lib.php';
//require_once $libpath.'usermanager.lib.php';
require_once $libpath.'sessionmanager.lib.php';
require_once $libpath.'usermanager.lib.php';
require_once $libpath.'formvalidator/FormValidator.class.php';
require_once $libpath.'tracking.lib.php';

require_once api_get_path(SYS_CODE_PATH).'newscorm/learnpathList.class.php';
require_once api_get_path(SYS_CODE_PATH).'exercice/exercise.lib.php';
require_once api_get_path(SYS_CODE_PATH).'exercice/exercise.class.php';

api_block_anonymous_users(); // Only users who are logged in can proceed.

$this_section = SECTION_COURSES;
$htmlHeadXtra[] = api_get_jquery_ui_js(true);
//$interbreadcrumb[] = array ('url' => '#', 'name' => get_lang('Course'));

Display::display_header(get_lang('Session'));

$session_id = intval($_GET['session_id']);
$course_id  = intval($_GET['course_id']);
if (empty($session_id)) {
	api_not_allowed();
}

$session_info   = SessionManager::fetch($session_id);
$session_list   = SessionManager::get_sessions_by_coach(api_get_user_id());
$course_list    = SessionManager::get_course_list_by_session_id($session_id);

$session_select = array();
foreach ($session_list as $item) {
    $session_select[$item['id']] =  $item['name'];
}

// Session list form

if (count($session_select) > 1) {
    $form = new FormValidator('exercise_admin', 'get', api_get_self().'?session_id='.$session_id);
    $form->addElement('select', 'session_id', get_lang('SessionList'), $session_select, 'onchange="javascript:change_session()"');
    $defaults['session_id'] = $session_id;
    $form->setDefaults($defaults);
    $form->display();
}

//Listing LPs from all courses
/*
$lps = array();
if (!empty($course_list)) {
    foreach ($course_list as $item) {    
        $list       = new LearnpathList(api_get_user_id(),$item['code']);
        $flat_list  = $list->get_flat_list();        
        $lps[$item['code']] = $flat_list;
        foreach ($flat_list as $item) {        
            //var_dump(get_week_from_day($item['publicated_on']));	
        }    
    }
}*/

//Getting all sessions where I'm subscribed
$new_session_list = UserManager::get_personal_session_course_list(api_get_user_id());

$my_session_list = array();
$final_array = array();

if (!empty($new_session_list)) {
    foreach($new_session_list as $item) {
        $my_session_id = $item['id_session'];    
        if (isset($my_session_id) && !in_array($my_session_id, $my_session_list) && $session_id == $my_session_id) {
        	$final_array[$my_session_id]['name'] = $item['session_name'];
            
            //Get all courses by session where I'm subscribed
            $my_course_list = UserManager::get_courses_list_by_session(api_get_user_id(), $my_session_id);            
                   
            foreach ($my_course_list as $my_course) {
                $course = array();
            
                $course_info   = api_get_course_info($my_course['code']);
                //Getting all exercises from the current course            
                $exercise_list = get_all_exercises($course_info, $my_session_id);
                           
                //Exercises we skip
                /*if (empty($exercise_list)) {
                    continue;
                } */   
                //$exercise_course_list = array();
                $course['name'] = $course_info['name'];
                $course['id']   = $course_info['real_id'];
                if (!empty($exercise_list)) {        
                    foreach($exercise_list as $exercise_item) {
                        //Loading the exercise                
                        $exercise = new Exercise($course_info['real_id']);
                        $exercise->read($exercise_item['id']);                                    
                        //$exercise_course_list[$exercise_item['id']] = $exercise;
                        //Reading all Exercise results by user, exercise_id, code, and session
                        $user_results = get_all_exercise_results_by_user(api_get_user_id(), $exercise_item['id'], $my_course['code'], $my_session_id);
                        $course['exercises'][$exercise_item['id']]['data']['exercise_data'] =  $exercise;                            
                        $course['exercises'][$exercise_item['id']]['data']['results']       =  $user_results;
                    }
                    $final_array[$my_session_id]['data'][$my_course['code']] = $course;        
                }   
            }            
        }
        $my_session_list[] =  $my_session_id;      
    }
}
//echo '<pre>';print_r($final_array);
//If the requested session does not exist in my list we stop the script
if (!api_is_platform_admin()) {    
    if (!in_array($session_id, $my_session_list)) {
        api_not_allowed();
    }
}

//require_once api_get_path(LIBRARY_PATH).'pear/HTML/Table.php';
//$html = '';
//Final data to be show
$my_real_array = $new_exercises = array();
$now = time();
foreach($final_array as $session_data) {
    $my_course_list = $session_data['data'];    
    if (!empty($my_course_list))     
    foreach ($my_course_list as $my_course_code=>$course_data) {
        //echo '<pre>';        print_r($course_data);
        if (isset($course_id) && !empty($course_id)) {
            if ($course_id != $course_data['id']) {
                continue;
            }
        }
        
        if (!empty($course_data['exercises'])) {
            //Exercises            
            foreach ($course_data['exercises'] as $my_exercise_id => $exercise_data) {
                $best_score_data = get_best_attempt_in_course($my_exercise_id, $my_course_code, $session_id);     
                $best_score      = show_score($best_score_data['exe_result'], $best_score_data['exe_weighting']);
                //Exercise results                              
                $counter = 1;                    
                
                foreach($exercise_data as $exercise_item) { 
                    $result_list     = $exercise_item['results'];
                    $exercise_info   = $exercise_item['exercise_data'];                    
                    if ($exercise_info->start_time == '0000-00-00 00:00:00') {
                        $start_date  = '-';
                    } else {
                        $start_date = api_get_local_time($exercise_info->start_time);
                    }                 
                    if (!empty($result_list)) {                         
                        foreach ($result_list as $exercise_result) {
                            //$my_exercise_result = array($exercise_info->exercise, $exercise_result['exe_id']);
                            $column = 1;   
                            $platform_score = show_score($exercise_result['exe_result'], $exercise_result['exe_weighting']);
                            $my_score = 0;
                            if(!empty($exercise_result['exe_weighting']) && intval($exercise_result['exe_weighting']) != 0) {                        
                                $my_score = $exercise_result['exe_result']/$exercise_result['exe_weighting'];
                            }
                            $position       = get_exercise_result_ranking($my_score, $exercise_result['exe_id'], $my_exercise_id,  $my_course_code,$session_id);
                            $my_real_array[]= array(	//'date'        => api_get_local_time($exercise_result['exe_date']),
                            							'status'      => Display::return_icon('quiz.gif', get_lang('Attempted'),'','22'), 
                            							'date'        => $start_date,
                            							'course'      => $course_data['name'], 
                            						    'exercise'    => $exercise_info->exercise,
                            						    'attempt'     => $counter,
                            						    'result'      => $platform_score,
                            						    'best_result' => $best_score,
                            						    'position'    => $position
                                                );
                            $counter++;
                        }
                    } else {
                        //We check the date validation of the exercise if the user can make it
                        if ($exercise_info->start_time != '0000-00-00 00:00:00') {
                            $allowed_time = api_strtotime($exercise_info->start_time);                                     
                            if ($now < $allowed_time) {
                                  continue;
                            }
                        }
                        $exercise_info->exercise = Display::url($exercise_info->exercise, api_get_path(WEB_CODE_PATH)."exercice/exercice_submit.php?cidReq=$my_course_code&exerciseId={$exercise_info->id}&id_session=$session_id", array('target'=>SESSION_LINK_TARGET));
                        $new_exercises[]= array(	//'date'        => api_get_local_time($exercise_result['exe_date']), 
                       							'status'      => Display::return_icon('star.png', get_lang('New'), array('width'=>'22')),
                    							'date'        => $start_date,
                    							'course'      => $course_data['name'], 
                    						    'exercise'    => $exercise_info->exercise,
                    						    'attempt'     => '-',
                    						    'result'      => '-',
                    						    'best_result' => '-',
                    						    'position'    => '-'
                                        );
                    }
                }             
            }
        }
    }
}  
$my_real_array = msort($my_real_array, 'date','asc');

if (!empty($new_exercises)) {
    $my_real_array = array_merge($new_exercises, $my_real_array);
}
$back_url = '';
if (!empty($course_id)) {
    $back_url = Display::url(Display::return_icon('back.png',get_lang('back.png')), api_get_path(WEB_CODE_PATH).'session/?session_id='.$session_id);
}

$start = $end = '';
if (!empty($session_info['date_start']) && $session_info['date_start'] != '0000-00-00') {
    $start = api_convert_and_format_date($session_info['date_start'], DATE_FORMAT_SHORT);    
    $start_only = get_lang('From').' '.$session_info['date_start'];
}
if (!empty($session_info['date_start']) && $session_info['date_end'] != '0000-00-00') {
    $end = api_convert_and_format_date($session_info['date_end'], DATE_FORMAT_SHORT);
    $end_only = get_lang('Until').' '.$session_info['date_end'];       
}

if (!empty($start) && !empty($end)) {
    $dates = Display::tag('i', sprintf(get_lang('FromDateXToDateY'),$start, $end));
} else {
    $dates = Display::tag('i', $start_only.' '.$end_only);
}

echo Display::tag('h1', $back_url.' '.$session_info['name']);
echo $dates.'<br />';

//echo '<pre>';print_r($course_list);
$new_course_list = array();
if (!empty($course_list)) {
    foreach($course_list as $course_data) {
        $course_data['title'] = Display::url($course_data['title'], api_get_path(WEB_CODE_PATH).'session/?session_id='.$session_id.'&course_id='.$course_data['id'].'#tabs-2');
        $new_course_list[] = array('title'=>$course_data['title']); 
    }
}

//All Learnpaths grid settings (First tab, first subtab)
$columns_courses        = array(get_lang('Title'));
$column_model_courses   = array(array('name'=>'title',  'index'=>'title',   'width'=>'150',  'align'=>'left',  'sortable'=>'false'),                               
                                );
$extra_params_courses['autowidth'] = 'true'; //use the width of the parent                             
                        
$url            = api_get_path(WEB_AJAX_PATH).'course_home.ajax.php?a=session_courses_lp_default&session_id='.$session_id.'&course_id='.$course_id;
$columns        = array(get_lang('PublicationDate'),get_lang('Course'), get_lang('LearningPath'));
$column_model   = array(array('name'=>'date',   'index'=>'date',   'width'=>'150',  'align'=>'left',  'sortable'=>'false'),
                        array('name'=>'course', 'index'=>'course', 'width'=>'400', 'align'=>'left',  'sortable'=>'false'),
                        array('name'=>'lp',     'index'=>'lp',     'width'=>'200', 'align'=>'center','sortable'=>'false'));
                        
//$extra_params['autowidth'] = 'true'; //use the width of the parent
//$extra_params['forceFit'] = 'true'; //use the width of the parent
//$extra_params['altRows'] = 'true'; //zebra style
                        
//Per course grid settings
$url_by_course = api_get_path(WEB_AJAX_PATH).'course_home.ajax.php?a=session_courses_lp_by_course&session_id='.$session_id.'&course_id='.$course_id;
$extra_params_course['grouping'] = 'true';
$extra_params_course['groupingView'] = array('groupField'       => array('course'),
                                             'groupColumnShow'  => array('false'),
                                             'groupText'        => array('<b>'.get_lang('Course').' {0}</b>'));
//$extra_params_course['autowidth'] = 'true'; //use the width of the parent                                          
                              
//Per Week grid
$url_week           = api_get_path(WEB_AJAX_PATH).'course_home.ajax.php?a=session_courses_lp_by_week&session_id='.$session_id.'&course_id='.$course_id;
$column_week        = array(get_lang('PeriodWeek'), get_lang('PublicationDate'), get_lang('Course'), get_lang('LearningPath'));
$column_week_model  = array (
                          array('name'=>'week',     'index'=>'week',    'width'=>'80',  'align'=>'left',  'sortable'=>'false'),       
                          array('name'=>'date',     'index'=>'date',    'width'=>'150', 'align'=>'left', 'sortable'=>'false'),
                          array('name'=>'course',   'index'=>'course',  'width'=>'400', 'align'=>'left',  'sortable'=>'false'),
                          array('name'=>'lp',       'index'=>'lp',      'width'=>'200', 'align'=>'center','sortable'=>'false'));
                          
$extra_params_week['grouping'] = 'true';
//For more details see http://www.trirand.com/jqgridwiki/doku.php?id=wiki:grouping
$extra_params_week['groupingView'] = array('groupDataSorted' =>true,
										   'groupField'=>array('week'),
                                           'groupColumnShow'=>'false',
                                           'groupText' => array('<b>'.get_lang('PeriodWeek').' {0}</b>'));
//$extra_params_week['autowidth'] = 'true'; //use the width of the parent

//MyQCM grid
$column_exercise        = array(get_lang('Status'), get_lang('ExerciseStartDate'), get_lang('Course'), get_lang('Exercise'),get_lang('Attempts'), get_lang('Result'), get_lang('BestResultInCourse'), get_lang('Ranking'));
$column_exercise_model  = array(
                                array('name'=>'status',     'index'=>'status',     'width'=>'50', 'align'=>'left',   'sortable'=>'true'),
                                array('name'=>'date',       'index'=>'date',       'width'=>'130','align'=>'left',   'sortable'=>'true'),
                                array('name'=>'course',     'index'=>'course',     'width'=>'200','align'=>'left',   'sortable'=>'true'),
                                array('name'=>'exercise',   'index'=>'exercise',   'width'=>'200','align'=>'left',   'sortable'=>'true'),                                
                                array('name'=>'attempt',    'index'=>'attempt',    'width'=>'60', 'align'=>'center', 'sortable'=>'true'),
                                array('name'=>'result',     'index'=>'result',     'width'=>'120','align'=>'center', 'sortable'=>'true'),
                                array('name'=>'best_result','index'=>'best_result','width'=>'140','align'=>'center', 'sortable'=>'true'),
                                array('name'=>'position',   'index'=>'position',   'width'=>'55', 'align'=>'center', 'sortable'=>'true')
                                );                                
$extra_params_exercise['height'] = '300';                                                        
//$extra_params_exercise['sortname'] = 'status';
//$extra_params_exercise['sortorder'] = 'desc';                                
//$extra_params_exercise['grouping'] = 'true';
//$extra_params_exercise['groupingView'] = array('groupField'=>array('course'),'groupColumnShow'=>'false','groupText' => array('<b>'.get_lang('Course').' {0}</b>'));
//$extra_params_exercise['groupingView'] = array('groupField'=>array('course'),'groupColumnShow'=>'false','groupText' => array('<b>'.get_lang('Course').' {0} - {1} Item(s)</b>'));
                                          
?>
<br />
<script>
function change_session() {
    document.exercise_admin.submit();
}        
    
$(function() {  
	//js used when generating images on the fly see function Tracking::show_course_detail()
    $(".dialog").dialog("destroy");        
    $(".dialog").dialog({
            autoOpen: false,
            show: "blind",                
            resizable: false,
            height:300,
            width:550,
            modal: true
     });
    $(".opener").click(function() {
        var my_id = $(this).attr('id');
        var big_image = '#main_graph_' + my_id;
        $( big_image ).dialog("open");
        return false;
    });
	    
    /* Binds a tab id in the url */
    $("#tabs").bind('tabsselect', function(event, ui) {
		window.location.href=ui.tab;
    });
    
    //Generate tabs with jquery-ui
    $('#tabs').tabs();
    $( "#sub_tab" ).tabs();     
         
<?php 

     //Displays js code to use a jqgrid
     echo Display::grid_js('courses',       '',             $columns_courses,$column_model_courses,$extra_params_courses,$new_course_list);
     echo Display::grid_js('list_default',  $url,           $columns,        $column_model,$extra_params,array(), '');
     echo Display::grid_js('list_course',   $url_by_course, $columns,        $column_model,$extra_params_course,array(),'');
     echo Display::grid_js('list_week',     $url_week,      $column_week,    $column_week_model, $extra_params_week,array(),'');     
     echo Display::grid_js('exercises',      '',            $column_exercise,$column_exercise_model, $extra_params_exercise, $my_real_array);        
?>

});
</script>

<?php 
$my_reporting   = Tracking::show_user_progress(api_get_user_id(), $session_id, '&session_id='.$session_id.'#tabs-4', false);
if (!empty($my_reporting))  {
    $my_reporting  .= '<br />'.Tracking::show_course_detail(api_get_user_id(), $_GET['course'], $_GET['session_id']);
}
if (empty($my_reporting)) {
    $my_reporting  = Display::return_message(get_lang('NoDataAvailable'), 'warning');
}

//Main headers
$headers        = array(get_lang('Courses'), get_lang('LearningPaths'), get_lang('MyQCM'), get_lang('MyStatistics'));
//Subheaders
$sub_header     = array(get_lang('AllLearningPaths'), get_lang('PerWeek'), get_lang('ByCourse'));

//Sub headers data
$lp_tabs           =  Display::tabs($sub_header, array(Display::grid_html('list_default'), Display::grid_html('list_week'), Display::grid_html('list_course')),'sub_tab');
$courses_tab       =  Display::grid_html('courses');
//Main headers data
echo Display::tabs($headers, array($courses_tab, $lp_tabs, Display::grid_html('exercises'), $my_reporting));

Display::display_footer();