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

use \ChamiloSession as Session;

// Language files that should be included.
$language_file = array('learnpath', 'courses', 'index','tracking','exercice', 'admin');
$cidReset = true;

require_once '../inc/global.inc.php';

$session_id = isset($_GET['session_id']) ? intval($_GET['session_id']): null;

$sessionField = new ExtraFieldValue('session');
$valueAllowVisitors = $sessionField->get_values_by_handler_and_field_variable($session_id, 'allow_visitors');

$allowVisitors = $valueAllowVisitors != false;

if (!$allowVisitors) {
    // Only users who are logged in can proceed.
    api_block_anonymous_users();
}

$this_section = SECTION_COURSES;
$htmlHeadXtra[] = api_get_jqgrid_js();

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

$course_id  = isset($_GET['course_id'])  ? intval($_GET['course_id']) : null;

$_SESSION['id_session'] = $session_id;

// Clear the exercise session just in case
if (isset($_SESSION['objExercise'])) {
    Session::erase('objExercise');
}

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

// Getting all sessions where I'm subscribed
$new_session_list = array();
if (!api_is_anonymous()) {
    $new_session_list = UserManager::get_personal_session_course_list(api_get_user_id());
}
$user_course_list = array();
foreach ($new_session_list as $session_item) {
    $user_course_list[] = $session_item['code'];
}

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

if (!empty($new_session_list)) {
    foreach ($new_session_list as $item) {
        $my_session_id = isset($item['id_session']) ? $item['id_session'] : null;
        if (isset($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 visible exercises from the current course
                $exercise_list = ExerciseLib::get_all_exercises(
                    $course_info,
                    $my_session_id,
                    true,
                    null,
                    false,
                    1
                );

                $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']);
                        $visible_return = $exercise->is_visible();
                        if ($visible_return['value'] != false) {
                            // Reading all Exercise results by user, exercise_id, code, and session.
                            $user_results = Event::getExerciseResultsByUser(
                                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;
    }
}
$new_course_list = array();

if (!empty($course_list)) {
    foreach ($course_list as $course_data) {
        if (in_array($course_data['code'], $user_course_list) || api_is_anonymous()) {
            $course_data['title'] = Display::url(
                $course_data['title'],
                api_get_course_url($course_data['code'], $session_id)
            );
        } else {
            continue;
        }

        $list = new LearnpathList(
            api_get_user_id(),
            $course_data['code'],
            $session_id,
            'publicated_on ASC',
            true
        );
        $lp_list = $list->get_flat_list();

        $lp_count = 0;

        if (!empty($lp_list)) {
            foreach ($lp_list as $valLp) {
                if ($valLp['lp_visibility']) {
                    $lp_count++;
                }
            }
        }

        $course_info    = api_get_course_info($course_data['code']);
        $exercise_count = count(
            ExerciseLib::get_all_exercises(
                $course_info,
                $session_id,
                true,
                null,
                false,
                1
            )
        );
        $max_mutation_date = '';

        $last_date = Tracking::get_last_connection_date_on_the_course(
            api_get_user_id(),
            $course_data['code'],
            $session_id,
            false
        );

        $icons = '';
        foreach ($lp_list as $item) {
            if ($item['modified_on'] == '0000-00-00 00:00:00' || empty($item['modified_on'])) {
                $lp_date_original = $item['created_on'];
                $image = 'new.gif';
                $label = get_lang('LearnpathAdded');
            } else {
                $lp_date_original = $item['modified_on'];
                $image = 'moderator_star.png';
                $label = get_lang('LearnpathUpdated');
            }

            $mutation_date = api_strtotime($item['publicated_on']) > api_strtotime($lp_date_original) ? $item['publicated_on'] : $lp_date_original;

            if (api_strtotime($mutation_date) > api_strtotime($max_mutation_date)) {
                $max_mutation_date = $mutation_date;
            }

            if (strtotime($last_date) < strtotime($lp_date_original)) {
                if (empty($icons)) {
                    $icons .= ' '.Display::return_icon(
                        $image,
                        get_lang('TitleNotification').': '.$label.' - '.$lp_date_original
                    ).' ';
                }
            }
        }

        $new_course_list[] = array(
            'title'=> $course_data['title'].$icons,
            //  'recent_lps' => $icons,
            //'max_mutation_date' => substr(api_get_local_time($max_mutation_date),0,10),
            'exercise_count' => $exercise_count,
            'lp_count'       => $lp_count
        );
    }
}

// If the requested session does not exist in my list we stop the script
if (!api_is_platform_admin()) {
    if (!api_is_anonymous() && !in_array($session_id, $my_session_list)) {
        api_not_allowed(true);
    }
}

//If session is not active we stop de script
if (!api_is_allowed_to_session_edit()) {
	api_not_allowed();
}

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

$session_select = array();
foreach ($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();
}

if (empty($session_id)) {
    $user_list = UserManager::get_user_list();
} else {
    $user_list = SessionManager::get_users_by_session($session_id);
}

//Final data to be show
$my_real_array = $new_exercises = array();
$now = time();
foreach ($final_array as $session_data) {
    $my_course_list = isset($session_data['data']) ? $session_data['data']: array();
    if (!empty($my_course_list)) {
        foreach ($my_course_list as $my_course_code=>$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) {
                    $best_score_data = ExerciseLib::get_best_attempt_in_course($my_exercise_id, $my_course_code, $session_id);

                    $best_score = '';
                    if (!empty($best_score_data)) {
                        $best_score = ExerciseLib::show_score($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 = $exercise_info->start_time;
                        }
                        if (!empty($result_list)) {
                            foreach ($result_list as $exercise_result) {
                                $platform_score = ExerciseLib::show_score($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 = ExerciseLib::get_exercise_result_ranking(
                                    $my_score,
                                    $exercise_result['exe_id'],
                                    $my_exercise_id,
                                    $my_course_code,
                                    $session_id,
                                    $user_list
                                );

                                $exercise_info->exercise = Display::url(
                                    $exercise_info->exercise,
                                    api_get_path(WEB_CODE_PATH)."exercice/result.php?cidReq=$my_course_code&id={$exercise_result['exe_id']}&id_session=$session_id&show_headers=1",
                                    array('target'=>SESSION_LINK_TARGET,'class'=>'exercise-result-link')
                                );

                                $my_real_array[]= array(
                                    'status'      => Display::return_icon('quiz.gif', get_lang('Attempted'),'', ICON_SIZE_SMALL),
                                    '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, 'UTC');
                                if ($now < $allowed_time) {
                                      continue;
                                }
                            }
                            $exercise_info->exercise = Display::url(
                                $exercise_info->exercise,
                                api_get_path(WEB_CODE_PATH)."exercice/overview.php?cidReq=$my_course_code&exerciseId={$exercise_info->id}&id_session=$session_id",
                                array('target'=>SESSION_LINK_TARGET)
                            );

                            $new_exercises[]= array(
                                'status'      => Display::return_icon('star.png', get_lang('New'), array('width'=>ICON_SIZE_SMALL)),
                                '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);
}

$start = $end = $start_only = $end_only ='';

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', $session_info['name']);
echo $dates.'<br />';

if ($session_info['show_description'] == 1) {
?>
    <div class="home-course-intro">
        <div class="page-course">
            <div class="page-course-intro">
                <p><?php echo $session_info['description']; ?></p>
            </div>
        </div>
    </div>
<?php
}

// All Learnpaths grid settings (First tab, first subtab)

$columns_courses = array(
    get_lang('Title'), get_lang('NumberOfPublishedExercises'), get_lang('NumberOfPublishedLps')
);
$column_model_courses = array(
    array('name'=>'title',              'index'=>'title',               'width'=>'400px',  'align'=>'left',  'sortable'=>'true'),
    //array('name'=>'recent_lps',         'index'=>'recent_lps',          'width'=>'10px',  'align'=>'left',  'sortable'=>'false'),
//    array('name'=>'max_mutation_date',  'index'=>'max_mutation_date',   'width'=>'120px',  'align'=>'left',  'sortable'=>'true'),
    array('name'=>'exercise_count',     'index'=>'exercise_count',      'width'=>'180px',  'align'=>'left',  'sortable'=>'true'),
    array('name'=>'lp_count',           'index'=>'lp_count',            'width'=>'180px',  'align'=>'left',  'sortable'=>'true')
);

$extra_params_courses['height'] = '100%';
$extra_params_courses['autowidth'] = 'true'; //use the width of the parent

//$extra_params_courses['gridview'] = "false";
/*$extra_params_courses['rowNum'] = 9000;

$extra_params_courses['height'] = "100%";
$extra_params_courses['autowidth'] = 'false'; //use the width of the parent
$extra_params_courses['recordtext'] = '';
$extra_params_courses['pgtext'] = '';
$extra_params_courses['pgbuttons'] = false;*/
//$extra_params_courses['width'] = '50%';
//$extra_params_courses['autowidth'] = 'true';

$url = api_get_path(WEB_AJAX_PATH).'course_home.ajax.php?a=session_courses_lp_default&session_id='.$session_id.'&course_id='.$course_id;
$columns = array(
    get_lang('PublicationDate'),
    get_lang('Course'),
    get_lang('LearningPaths')
);

$column_model   = array(
    array('name'=>'date',   'index'=>'date',   'width'=>'120', 'align'=>'left', 'sortable'=>'true'),
    array('name'=>'course', 'index'=>'course', 'width'=>'300', 'align'=>'left', 'sortable'=>'true', 'wrap_cell' => 'true'),
    array('name'=>'lp',     'index'=>'lp',     'width'=>'440', 'align'=>'left', 'sortable'=>'true')
);

$extra_params = array();

/*
$extra_params['sortname'] = 'date';
$extra_params['sortorder'] = 'asc';
$extra_params['pgbuttons'] = false;
$extra_params['recordtext'] = '';
$extra_params['pgtext'] = '';
$extra_params['height'] = "100%";
*/
//$extra_params['autowidth'] = 'true'; //use the width of the parent
//$extra_params['width'] = '90%';

//$extra_params['autowidth'] = 'true'; //use the width of the parent
//$extra_params['forceFit'] = 'true'; //use the width of the parent
//$extra_params['altRows'] = 'true'; //zebra style

$extra_params['height'] = '100%';
$extra_params['autowidth'] = 'true'; //use the width of the parent

//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 = array();
$extra_params_course['grouping'] = 'true';
$extra_params_course['groupingView'] = array(
    'groupCollapse'    => false,
    '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
$extra_params_course['height'] = "100%";

//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('LearningPaths')
);

$column_week_model  = array(
    array('name'=>'week',     'index'=>'week',    'width'=>'40',  'align'=>'left', 'sortable'=>'false'),
    array('name'=>'date',     'index'=>'date',    'width'=>'120', 'align'=>'left', 'sortable'=>'false'),
    array('name'=>'course',   'index'=>'course',  'width'=>'300', 'align'=>'left', 'sortable'=>'true', 'wrap_cell' => 'true'),
    array('name'=>'lp',       'index'=>'lp',      'width'=>'440', 'align'=>'left', 'sortable'=>'true')
);

$extra_params_week = array();
$extra_params_week['grouping'] = 'true';
//For more details see http://www.trirand.com/jqgridwiki/doku.php?id=wiki:grouping
$extra_params_week['groupingView'] = array(
    'groupCollapse' => false,
    'groupDataSorted' => false,
    'groupField' => array('week'),
    'groupOrder' => array('desc'),
    'groupColumnShow' => 'false',
    'groupText' => array('<b>' . get_lang('PeriodWeek') . ' {0}</b>')
);
$extra_params_week['autowidth'] = 'true'; //use the width of the parent
$extra_params_week['height'] = '100%';

// MyQCM grid
if (!api_is_anonymous()) {
    $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'=>'40', 'align'=>'left',   'sortable'=>'false'),
        array('name'=>'date',       'index'=>'date',       'width'=>'130','align'=>'left',   'sortable'=>'true'),
        array('name'=>'course',     'index'=>'course',     'width'=>'200','align'=>'left',   'sortable'=>'true', 'wrap_cell' => 'true'),
        array('name'=>'exercise',   'index'=>'exercise',   'width'=>'200','align'=>'left',   'sortable'=>'false'),
        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'] = '100%';
    $extra_params_exercise['autowidth'] = 'true';
    //$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;
    });
<?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(),'');

    if (!api_is_anonymous()) {
        echo Display::grid_js('exercises', '', $column_exercise, $column_exercise_model, $extra_params_exercise, $my_real_array);
    }
?>
    // Generate tabs with jquery-ui
    $('#tabs').tabs();
    $( "#sub_tab" ).tabs();
});
</script>

<?php

$courseCode = isset($_GET['course']) ? $_GET['course'] : null;

$my_reporting = '';

if (!api_is_anonymous()) {
    $my_reporting = Tracking::show_user_progress(api_get_user_id(), $session_id, '#tabs-4', false, false);

    if (!empty($my_reporting))  {
        $my_reporting  .= '<br />'.Tracking::show_course_detail(api_get_user_id(), $courseCode, $session_id);
    }
    if (empty($my_reporting)) {
        $my_reporting  = Display::return_message(get_lang('NoDataAvailable'), 'warning');
    }
}

// Main headers
$headers = array(
    get_lang('Courses'),
    get_lang('LearningPaths')
);

if (!api_is_anonymous()) {
    $headers[] = get_lang('MyQCM');
    $headers[] = get_lang('MyStatistics');
}

// Sub headers
$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();