<?php
/* For licensing terms, see /license.txt */

/**
 * Script
 * @package chamilo.gradebook
 * @author Julio Montoya - fixes in order to use gradebook models + some code cleaning
 */

$cidReset = true;
require_once '../inc/global.inc.php';
$this_section = SECTION_COURSES;
$current_course_tool = TOOL_GRADEBOOK;

api_protect_course_script(true);
api_block_anonymous_users();

if (!api_is_allowed_to_edit()) {
    header('Location: /index.php');
    exit;
}

$my_selectcat = isset($_GET['selectcat']) ? intval($_GET['selectcat']) : '';

if (empty($my_selectcat)) {
    api_not_allowed();
}

$course_id = GradebookUtils::get_course_id_by_link_id($my_selectcat);

$table_link = Database::get_main_table(TABLE_MAIN_GRADEBOOK_LINK);
$table_evaluation = Database::get_main_table(TABLE_MAIN_GRADEBOOK_EVALUATION);
$tbl_forum_thread = Database:: get_course_table(TABLE_FORUM_THREAD);
$tbl_work = Database:: get_course_table(TABLE_STUDENT_PUBLICATION);
$tbl_attendance = Database:: get_course_table(TABLE_ATTENDANCE);

$table_evaluated[LINK_EXERCISE]           = array(TABLE_QUIZ_TEST, 'title', 'id', get_lang('Exercise'));
$table_evaluated[LINK_DROPBOX]            = array(TABLE_DROPBOX_FILE, 'name','id', get_lang('Dropbox'));
$table_evaluated[LINK_STUDENTPUBLICATION] = array(TABLE_STUDENT_PUBLICATION, 'url','id', get_lang('Student_publication'));
$table_evaluated[LINK_LEARNPATH]          = array(TABLE_LP_MAIN, 'name','id', get_lang('Learnpath'));
$table_evaluated[LINK_FORUM_THREAD]       = array(TABLE_FORUM_THREAD, 'thread_title_qualify', 'thread_id', get_lang('Forum'));
$table_evaluated[LINK_ATTENDANCE]         = array(TABLE_ATTENDANCE, 'attendance_title_qualify', 'id', get_lang('Attendance'));
$table_evaluated[LINK_SURVEY]             = array(TABLE_SURVEY, 'code', 'survey_id', get_lang('Survey'));

$submitted = isset($_POST['submitted']) ? $_POST['submitted'] : '';
if ($submitted==1) {
    Display :: display_confirmation_message(get_lang('GradebookWeightUpdated')) . '<br /><br />';
    if (isset($_POST['evaluation'])) {
        $eval_log = new Evaluation();
    }
}

$output='';
$my_cat = Category::load($my_selectcat);
$my_cat = $my_cat[0];

$parent_id = $my_cat->get_parent_id();
$parent_cat = Category::load($parent_id);

$my_category = array();
$cat = new Category();
$my_category = $cat->shows_all_information_an_category($my_selectcat);

$original_total = $my_category['weight'];
$masked_total = $parent_cat[0]->get_weight();

$sql = 'SELECT * FROM '.$table_link.' WHERE category_id = '.$my_selectcat;
$result = Database::query($sql);
$links = Database::store_result($result, 'ASSOC');

foreach ($links as &$row) {
    $item_weight = $row['weight'];
    //$item_weight = $masked_total*$item_weight/$original_total;
    //
    $sql = 'SELECT * FROM '.GradebookUtils::get_table_type_course($row['type']).'
            WHERE c_id = '.$course_id.' AND '.$table_evaluated[$row['type']][2].' = '.$row['ref_id'];
    $result = Database::query($sql);
    $resource_name = Database ::fetch_array($result);

    if (isset($resource_name['lp_type'])) {
        $resource_name = $resource_name[2];
    } else {
        $resource_name = $resource_name[1];
    }

    $row['resource_name'] = $resource_name;

    // Update only if value changed
    if (isset($_POST['link'][$row['id']])) {
        //$new_weight = trim($_POST['link'][$row['id']]*$original_total/$masked_total);
        $new_weight = trim($_POST['link'][$row['id']]);
        GradebookUtils::updateLinkWeight($row['id'], $resource_name, $new_weight);
        $item_weight = $new_weight;
    }

    $output.= '<tr><td>'.GradebookUtils::build_type_icon_tag($row['type']).'</td>
               <td> '.$resource_name.' '.Display::label($table_evaluated[$row['type']][3],'info').' </td>';
    $output.= '<td>
                    <input type="hidden" name="link_'.$row['id'].'" value="'.$resource_name.'" />
                    <input size="10" type="text" name="link['.$row['id'].']" value="'.$item_weight.'"/>
               </td></tr>';
}

$sql = 'SELECT * FROM '.$table_evaluation.' WHERE category_id = '.$my_selectcat;
$result = Database::query($sql);
$evaluations = Database::store_result($result);
foreach ($evaluations as $evaluationRow) {
    $item_weight = $evaluationRow['weight'];
    //$item_weight = $masked_total*$item_weight/$original_total;

    //update only if value changed
    if (isset($_POST['evaluation'][$evaluationRow['id']])) {
        //$new_weight = trim($_POST['evaluation'][$evaluationRow['id']]*$original_total/$masked_total);
        $new_weight = trim($_POST['evaluation'][$evaluationRow['id']]);
        GradebookUtils::updateEvaluationWeight($evaluationRow['id'], $new_weight);

        $item_weight = $new_weight;
    }

    $output.= '<tr>
                <td>'.GradebookUtils::build_type_icon_tag('evalnotempty').'</td>
                <td>'.$evaluationRow['name'].' '.Display::label(get_lang('Evaluation')).'</td>';
    $output.= '<td>
                    <input type="hidden" name="eval_'.$evaluationRow['id'].'" value="'.$evaluationRow['name'].'" />
                    <input type="text" size="10" name="evaluation['.$evaluationRow['id'].']" value="'.$item_weight.'"/>
                </td></tr>';
}

$my_api_cidreq = api_get_cidreq();
if ($my_api_cidreq=='') {
    $my_api_cidreq='cidReq='.$my_category['course_code'];
}

$currentUrl = api_get_self().'?'.api_get_cidreq().'&selectcat='.$my_selectcat;

$form = new FormValidator('auto_weight', 'post', $currentUrl);
$form->addHeader(get_lang('AutoWeight'));
$form->addLabel(null, get_lang('AutoWeightExplanation'));
$form->addButtonUpdate(get_lang('AutoWeight'));

if ($form->validate()) {
    $itemCount = count($links) + count($evaluations);
    $weight = round($original_total / $itemCount, 2);
    $total = $weight * $itemCount;

    $diff = null;
    if ($original_total !== $total) {
        if ($total > $original_total) {
            $diff = $total - $original_total;
        }
    }

    $total = 0;
    $diffApplied = false;

    foreach ($links as $link) {
        $weightToApply = $weight;
        if ($diffApplied == false) {
            if (!empty($diff)) {
                $weightToApply = $weight - $diff;
                $diffApplied = true;
            }
        }
        GradebookUtils::updateLinkWeight(
            $link['id'],
            $link['resource_name'],
            $weightToApply
        );
    }

    foreach ($evaluations as $evaluation) {
        $weightToApply = $weight;
        if ($diffApplied == false) {
            if (!empty($diff)) {
                $weightToApply = $weight - $diff;
                $diffApplied = true;
            }
        }
        GradebookUtils::updateEvaluationWeight($evaluation['id'], $weightToApply);
    }

    header('Location:'.$currentUrl);
    exit;
}


// 	DISPLAY HEADERS AND MESSAGES
if (!isset($_GET['exportpdf']) and !isset($_GET['export_certificate'])) {
    if (isset ($_GET['studentoverview'])) {
        $interbreadcrumb[]= array ('url' => Security::remove_XSS($_SESSION['gradebook_dest']).'?selectcat=' . $my_selectcat,'name' => get_lang('Gradebook'));
        Display :: display_header(get_lang('FlatView'));
    } elseif (isset ($_GET['search'])) {
        $interbreadcrumb[]= array ('url' => Security::remove_XSS($_SESSION['gradebook_dest']).'?selectcat=' . $my_selectcat,'name' => get_lang('Gradebook'));
        Display :: display_header(get_lang('SearchResults'));
    } else {
        $interbreadcrumb[] = array ('url' => Security::remove_XSS($_SESSION['gradebook_dest']).'?selectcat=1', 'name' => get_lang('Gradebook'));
        $interbreadcrumb[] = array ('url' => '#','name' => get_lang('EditAllWeights'));
        Display :: display_header('');
    }
}

?>
    <div class="actions">
        <a href="<?php echo Security::remove_XSS($_SESSION['gradebook_dest']).'?'.$my_api_cidreq ?>&selectcat=<?php echo $my_selectcat ?>">
            <?php echo Display::return_icon('back.png',get_lang('FolderView'),'',ICON_SIZE_MEDIUM); ?>
        </a>
    </div>
<?php


$form->display();

$formNormal = new FormValidator('normal_weight', 'post', $currentUrl);
$formNormal->addHeader(get_lang('EditWeight'));
$formNormal->display();

//$warning_message = sprintf(get_lang('TotalWeightMustBeX'), $masked_total);
$warning_message = sprintf(get_lang('TotalWeightMustBeX'), $original_total);
Display::display_warning_message($warning_message, false);

?>
<form method="post" action="gradebook_edit_all.php?<?php echo $my_api_cidreq ?>&selectcat=<?php echo $my_selectcat?>">
    <table class="data_table">
        <tr class="row_odd">
            <th style="width: 35px;"><?php echo get_lang('Type'); ?></th>
            <th><?php echo get_lang('Resource'); ?></th>
            <th><?php echo get_lang('Weight'); ?></th>
        </tr>
        <?php echo $output; ?>
    </table>
    <input type="hidden" name="submitted" value="1" />
    <br />
    <button class="btn btn-primary" type="submit" name="name" value="<?php echo get_lang('Save') ?>">
        <?php echo get_lang('SaveScoringRules') ?>
    </button>
</form>
<?php
Display :: display_footer();
