<?php
session_start();
error_reporting('0');
if(isset($_SESSION['teacher'])){
$username = $_SESSION['teacher'];
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <style>
        .card-title a {
            font-size: 16px;
            border-bottom: 1px solid #707478;
            color: #707478;
        }
        .card-title a:hover{
            border-bottom: 1px solid #1A2229;
            color: #1A2229;
        }
        .btn-app:first-child{
            margin-left:0 !important;
        }
    </style>


    <?php include '../admin/includes/styles.php'; ?>
    <title> Subject |  <?php echo $school_name; ?> </title>


</head>
<body class="hold-transition sidebar-mini layout-fixed">
<div class="wrapper">

    <!-- Navbar -->
    <?php include 'includes/notifications.php'; ?>
    <!-- /.navbar -->

    <!-- Main Sidebar Container -->
    <?php include "includes/sidebar.php";?>

    <!-- Content Wrapper. Contains page content -->
    <div class="content-wrapper">
        <!-- Content Header (Page header) -->
        <div class="content-header">
            <div class="container-fluid">
                <div class="row mb-2">
                    <div class="col-sm-6">
                        <h1 class="m-0">Subjects</h1>
                    </div><!-- /.col -->
                    <div class="col-sm-6">
                        <ol class="breadcrumb float-sm-right">
                            <li class="breadcrumb-item"><a href="<?php echo $conn->teacher_url(); ?>">Home</a></li>
                            <li class="breadcrumb-item active">Subjects</li>
                        </ol>
                    </div><!-- /.col -->
                </div><!-- /.row -->
            </div><!-- /.container-fluid -->
        </div>
        <!-- /.content-header -->

        <!-- Main content -->
        <section class="content">
            <div class="container-fluid">

                <div class="row">
                    <!--          <section class="col-lg-12 connectedSortable">-->
                    <!--           <a href="add-class"><button class="btn btn-outline-success">Add a class</button></a>-->
                    <!--          </section>-->
                    <section class="col-lg-12 connectedSortable">
                        <div class="card">
                            <div class="card-header" style="background: #17a2b8; color: white;">
                                <h3 class="card-title" style="font-size: 15px;"> <i class="fa fa-star"></i> View Subjects </h3>
                            </div>
                            <!-- /.card-header -->
                            <div class="card-body">
                                <h3 class="card-title text-center" style="font-size: 15px;"> Please select class to view the subjects you are teaching in the selected class <i class="fa fa-info-circle" data-toggle="tooltip" title="N.B: Only classes with subjects taught are clickable."></i></h3>
                                <br><br>
                                <div>
                                    <?php
                                    $sql = "SELECT * FROM teachers WHERE username =:username";
                                    $conn->query($sql);
                                    $conn->bind(":username", $username);
                                    $result = $conn->fetchSingle();
                                    $teacher_name = $result->name;

                                    $sql = "SELECT DISTINCT (class_id) FROM subjects WHERE teacher_name = :name";
                                    $conn->query($sql);
                                    $conn->bind(":name", $teacher_name);

                                    if($conn->rowCount() > 0):
                                        $result = $conn->fetchMultiple();
                                        $n = 0;
                                        foreach ($result as $subject){
                                            $class_id = $subject->class_id;
                                            //fetch class name
                                            $sql = "SELECT name FROM classes WHERE id =:class_id";
                                            $conn->query($sql);
                                            $conn->bind(":class_id", $class_id);
                                            $className = $conn->fetchColumn();
//                                          $class_name = strtolower($conn->slugify($conn->fetchColumn()));

                                            //fetch available subjects per class
                                            $sql = 'SELECT DISTINCT(subject_name) FROM subjects WHERE class_id =:class AND teacher_name =:teacher_name';
                                            $conn->query($sql);
                                            $conn->bind(":class", $class_id);
                                            $conn->bind(":teacher_name", $teacher_name);
                                            $subject_available = $conn->rowCount();

                                            //badge color array
                                            $badge_color = array('bg-success', 'bg-purple', 'bg-warning', 'bg-info', 'bg-danger', 'bg-teal', 'bg-primary');
                                            //enable or disable link on number of available sections  href="section/<?php echo $class_id;
                                            $url = $conn->teacher_url()."subject/$class_id";

                                            ?>
                                            <a class="btn btn-app" style="min-width: 120px; height: 90px;" <?php if($subject_available != 0){echo "href='$url'";}?>>
                                                <span class="badge <?php echo $badge_color[$n]; ?>" data-toggle="tooltip" title="<?php echo $subject_available ?> subject(s) taught in class <?php echo $className; ?>"><?php echo $subject_available ?></span>
                                                <i class="fas fa-users" style="font-size: 50px;"></i> <?php echo ucwords(str_replace('-', ' ', $className)); ?>
                                            </a>
                                            <?php
                                            $n++;

                                        }

                                    else:
                                        ?>  <p class="text-center text-info">You are not teaching any subject(s) in any classes yet. </p> <?php
                                    endif;
                                    ?>

                                </div>
                                <?php
                                //display selected section below
                                if(isset($_GET['class'])){
                                    $class =  $_GET['class'];
                                    $sql = "SELECT *  FROM subjects WHERE class_id =:class AND teacher_name =:name";
                                    $conn->query($sql);
                                    $conn->bind(":class", $class);
                                    $conn->bind(":name", $teacher_name);
                                    $result = $conn->fetchMultiple();

                                    $sql = "SELECT name FROM classes WHERE id =:id";
                                    $conn->query($sql);
                                    $conn->bind(":id", $class);
                                    $className = $conn->fetchColumn();


                                    ?>
                                    <div class="card-header" style="background: #c3570f; color: white; margin: 20px 0 2px;">
                                        <h3 class="card-title" style="font-size: 15px;"> <i class="fa fa-star"></i> Viewing Subject details for class <?php echo $className; ?> </h3>
                                    </div>
                                    <table id="teacher" class="table table-bordered table-striped">
                                        <thead>
                                        <tr>
                                            <th>#</th>
                                            <th>Subject Name</th>
                                            <th>Subject Author</th>
                                            <th>Subject Code</th>
                                            <th>Teacher</th>
                                            <th>Pass Mark</th>
                                            <th>Final Mark</th>
                                        </tr>
                                        </thead>
                                        <tbody>
                                        <?php
                                        $i = 1;
                                        if($conn->rowCount()){
                                            foreach ($result as $subject_details):
                                                $subject_code= $subject_details->subject_code;
                                                $subject_author = $subject_details->subject_author;
                                                $subject_name = $subject_details->subject_name;
                                                $pass_mark= $subject_details->pass_mark;
                                                $final_mark = $subject_details->final_mark;
                                                $teacher_name = $subject_details->teacher_name;
                                                $subject_id = $subject_details->id;
                                                ?>
                                                <tr>
                                                    <td><?php echo $i++; ?></td>
                                                    <td><?php echo $subject_name;?></td>
                                                    <td><?php echo $subject_author;?></td>
                                                    <td><?php echo $subject_code; ?></td>
                                                    <td><?php echo $teacher_name;?></td>
                                                    <td><?php echo $pass_mark;?></td>
                                                    <td><?php echo $final_mark;?></td>
                                                </tr>

                                            <?php endforeach; ?>
                                            <?php
                                        }else{
                                            ?> <tr>
                                                <td colspan="7" class="text-center">No Data in table</td>
                                            </tr><?php
                                        }

                                        ?>
                                        </tbody>
                                        <tfoot>
                                        <tr>
                                            <th>#</th>
                                            <th>Subject Name</th>
                                            <th>Subject Author</th>
                                            <th>Subject Code</th>
                                            <th>Teacher</th>
                                            <th>Pass Mark</th>
                                            <th>Final Mark</th>
                                        </tr>
                                        </tfoot>
                                    </table>
                                    <?php


                                }



                                ?>

                            </div>
                            <!-- /.card-body -->
                        </div>


                    </section>
                </div>

                <div id="show-msg">

                </div>
                <!-- /.row (main row) -->
            </div><!-- /.container-fluid -->
        </section>
        <!-- /.content -->
    </div>
    <!-- /.content-wrapper -->
    <?php include "../admin/includes/footer.php";?>
    <script>
        $(document).ready(function(){
            $('[data-toggle="tooltip"]').tooltip();
        });
    </script>


    <script>
        $(function () {
            $("#teacher").DataTable({
                "responsive": true, "lengthChange": false, "autoWidth": false,
                "buttons": ["copy", "csv", "pdf", "print"]
            }).buttons().container().appendTo('#teacher_wrapper .col-md-6:eq(0)');
            $('#example2').DataTable({
                "paging": true,
                "lengthChange": false,
                "searching": true,
                "ordering": true,
                "info": true,
                "autoWidth": false,
                "responsive": true
            });
        });
    </script>

    <?php
    }else{
    ?>
    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, shrink-to-fit=no">

        <?php include '../admin/includes/styles.php'; ?>
        <title>Login to continue | <?php echo $school_name; ?> </title>

        <!-- END PAGE LEVEL PLUGINS/CUSTOM STYLES -->

    </head>
    <body>
    <div class="container" style="margin-top: 20%;">
        <div class="row">
            <div class="col-lg-12 col-md-12">
                <div class="section-title text-center">
                    <h6> You need to login to continue </h6>
                    <div class="spinner-border text-info" role="status">
                        <span class="sr-only">Loading...</span>
                        <meta http-equiv='refresh' content='3; <?php echo $teacher_login_link; ?>'>
                    </div>
                    <p>Redirecting to the login  page...</p>
                </div>
            </div>
        </div>
    </div>

    <?php
    }

    ?>
