<?php

    session_start();
    $idprodi = $_SESSION['login-dosen']['prodi'];
    /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
     * Easy set variables
     */

    /* Array of database columns which should be read and sent back to DataTables. Use a space where
     * you want to insert a non-database field (for example a counter or static image)
     */
    $aColumns = ['tp.semester'];

    /* Indexed column (used for fast and accurate table cardinality) */
    $sIndexColumn = 'tp.id';

    /* DB table to use */
    $sTable = 'tbpraoutline tp';

    /* Database connection information */
    include '../../../inc/helper.php';
    include '../../../inc/konfigurasi.php';
    include '../../../inc/db.pdo.class.php';

    $db = new dB($dbsetting);

    /*
     * Paging
     */
    $sLimit = '';
    if (isset($_GET['iDisplayStart']) && $_GET['iDisplayLength'] != '-1') {
        $sLimit = 'LIMIT '.intval($_GET['iDisplayStart']).', '.
            intval($_GET['iDisplayLength']);
    }

    /*
     * Ordering
     */
    //$sOrder = "ORDER BY tp.semester";

    $sOrder = 'ORDER BY tp.semester';

    /*
     * Filtering
     */
    $sWhere = '';
    if (isset($_GET['sSearch']) && $_GET['sSearch'] != '') {
        $sWhere = 'WHERE (';
        for ($i = 0; $i < count($aColumns); ++$i) {
            if (isset($_GET['bSearchable_'.$i]) && $_GET['bSearchable_'.$i] == 'true') {
                $sWhere .= ''.$aColumns[$i]." LIKE '%".$_GET['sSearch']."%' OR ";
            }
        }
        $sWhere = substr_replace($sWhere, '', -3);
        $sWhere .= ')';
    }

    /* Individual column filtering */
    for ($i = 0; $i < count($aColumns); ++$i) {
        if (isset($_GET['bSearchable_'.$i]) && $_GET['bSearchable_'.$i] == 'true' && $_GET['sSearch_'.$i] != '') {
            if ($sWhere == '') {
                $sWhere = 'WHERE ';
            } else {
                $sWhere .= ' AND ';
            }
            $sWhere .= ''.$aColumns[$i]." LIKE '%".$_GET['sSearch_'.$i]."%' ";
        }
    }

    $where2 = '';
    if ($sWhere != '') {
        $where2 = " AND tp.idProdi='$idprodi' ";
    } else {
        $where2 = " WHERE tp.idProdi='$idprodi' ";
    }
    /*
     * SQL queries
     * Get data to display
     */
    $sQuery0 = "
		SELECT
			tp.semester, 
			COUNT(if(tp.status_usulan='1',1,null)) as terima,
			COUNT(if(tp.status_usulan='2',1,null)) as tolak,
			COUNT(if(tp.status_usulan='3',1,null)) as gugur,
			COUNT(if(tp.status_usulan='0',1,null)) as proses,
			COUNT(tp.semester) as totaldraft
		FROM $sTable
		$sWhere
		$where2
		GROUP BY tp.semester
		$sOrder 
		";

    $sQuery0 = "SELECT SUBSTRING_INDEX(SUBSTRING_INDEX(semester, '-', 2), '-', -1) as tahunSplit, SUBSTRING_INDEX(SUBSTRING_INDEX(semester, '-', 1), '-', -1) as semesterSplit, semester, terima, tolak, gugur,proses, totaldraft FROM ($sQuery0) t ORDER BY tahunSplit DESC, semesterSplit DESC ";
    //echo $sQuery0;
    $db->runQuery($sQuery0);
    $iFilteredTotal = $db->dbRows();

    $result = $db->runQuery($sQuery0.$sLimit);

    /* Total data set length */
    $sQuery2 = "
		SELECT COUNT(DISTINCT(tp.semester)) as total FROM $sTable $sWhere $where2
	";
    //echo $sQuery2;
    $db->runQuery($sQuery2);
    $aResultTotal = $db->dbFetch();
    $iTotal = $aResultTotal['total'];

    /*$rResultTotal = mysql_query( $sQuery, $gaSql['link'] ) or fatal_error( 'MySQL Error: ' . mysql_errno() );
    $aResultTotal = mysql_fetch_array($rResultTotal);
    $iTotal = $aResultTotal[0];*/

    /*
     * Output
     */

    $output = [
        'sEcho' => intval($_GET['sEcho']),
        'iTotalRecords' => $iTotal,
        'iTotalDisplayRecords' => $iFilteredTotal,
        'aaData' => [],
    ];

    while ($aRow = $db->dbFetch($result)) {
        //print_r($aRow);
        $row = [];
        $tahunSplit = intval($aRow['tahunSplit']);
        $tahunSplitNext = $tahunSplit + 1;
        $semsterSplit = $aRow['semesterSplit'];
        switch ($semsterSplit) {
            case 'GAS': $semesterText = 'GAZAL'; break;
            case 'GEN': $semesterText = 'GENAP'; break;
            default: $semesterText = '-';
        }

        $periodeFinalText = "$tahunSplit/$tahunSplitNext - $semesterText";

        $row[0] = $periodeFinalText;
        $row[1] = $aRow['proses'];
        $row[2] = $aRow['terima'];
        $row[3] = $aRow['tolak'];
        $row[4] = $aRow['gugur'];
        $row[5] = $aRow['totaldraft'];

        $output['aaData'][] = $row;
        // print_r($row);
    }

    echo json_encode($output);