LRR/Courses.php

<?php
include 'NoDirectPhpAcess.php';
?>


<?php
$page='Courses';
include 'Header.php';
?>

<div class="container">

    <?php
    $user_d = $_SESSION['user_id'];
    if( $_SESSION['user_type']=="Lecturer" || $_SESSION['user_type']=="TA")
    {
    ?>

	<!--    FOR LECTURER-->


	<div class="row">

	    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.13.2/themes/base/jquery-ui.min.css" integrity="sha512-ELV+xyi8IhEApPS/pSj66+Jiw+sOT1Mqkzlh8ExXihe4zfqbWkxPRi8wptXIO9g73FSlhmquFlUOuMSoXz5IRw==" crossorigin="anonymous" referrerpolicy="no-referrer" />
	    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.0/jquery.min.js" integrity="sha512-3gJwYpMe3QewGELv8k/BX9vcqhryRdzRMxVfq6ngyWXwo03GFEzjsUm8Q7RZcHPHksttq7/GFoxjCVUjkjvPdw==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>	    
	    <script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.13.2/jquery-ui.min.js" integrity="sha512-57oZ/vW8ANMjR/KQ6Be9v/+/h6bq9/l3f0Oc7vn6qMqyhvPd1cvKBRWWpzu0QoneImqr2SkmO4MSqU+RpHom3Q==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>

	    <script>
				     function extendDeadline(id) {
					 const dropstudents = $("#dropstudents").html();
					 try {
					     $(`<form id="frm" method="get" action="Script.php">
                                <input type="hidden" name="extenddeadline" value="true" >
                                <input type="hidden" name="id" value="${id}" >
                                New date and time<br>
                                <input type="date" name="date" required="">
                                <input type="time" name="time" required="">
                                <br>
                                <input type="radio" value="1" name="type" required=""> Extend for all
                                <br>
                                <input type="radio" value="2" name="type" required=""> Extend for one
                                <br>
                                ${dropstudents}
                           </form>`).dialog({
			       modal: true,
			       title:'Extend deadline',
			       close: function () {
				   var closeBtn = $('.ui-dialog-titlebar-close');
				   closeBtn.html('');
			       },     
			       buttons: {
				   'Submit': function () {
				       $('#frm').submit();
				       $(this).dialog('close');
				   },
				   'Cancel': function () {
				       $(this).dialog('close');
				   }
			       }
			   });
					 } catch(e) {
					     alert(e);
					 }
				     }
            </script>


	    <?php
	    if(!empty($_GET["course"]))
	    {
		$course_url = mysqli_real_escape_string($con, $_GET["course"]);
		$result = mysqli_query($con,"SELECT `Course_ID`, `Course_Name`, `Academic_Year`, `Faculty`,"
					  . " `Lecturer_User_ID`, `TA_User_ID`, `Course_Code`, `URL`, `Verify_New_Members`  "
					  . " , users_table.Full_Name  FROM `courses_table` INNER JOIN users_table"
					  . " ON users_table.User_ID=courses_table.Lecturer_User_ID where URL='$course_url' ");

		if(mysqli_num_rows($result)==0)
		{} else { while($row = mysqli_fetch_assoc($result)) {
                    $name=$row['Course_Name'];
                    $code=$row['Course_Code'];
                    $faculty=$row['Faculty'];
                    $lecturer=$row['Full_Name'];
                    $academic=$row['Academic_Year'];
                    $url=$row['URL'];
                    $id=$row['Course_ID'];
                    $course_id=$row['Course_ID'];
                    echo    "<p class='mt-md-1 mb-md-1'> <strong>($code) - $name</strong> </p>
                             <br>
                             <small> Faculty: $faculty &nbsp;&nbsp; Year: $academic &nbsp;&nbsp; Lecturer: $lecturer </small>
                             <hr>
                             <div class='row'>";

                    echo "<div class='col-md-5'>";
		}

		    // ------------------------------Editing Lab Assignment by Lecturer ------------------------------------


		    if($_GET['act']=="edit"){
			$getid = mysqli_real_escape_string($con, $_GET["cid"]);
			$result1 = mysqli_query($con, "SELECT * from lab_reports_table WHERE Lab_Report_ID = '$getid'");

			while($row1 = mysqli_fetch_assoc($result1)) {
			    $Deadline = $row1['Deadline'];
			    $_SESSION['Date'] = trim( strstr($Deadline, ' ', true) );
			    $_SESSION['Time'] = trim( strstr($Deadline, ' ') );
			    $_SESSION['Instructions'] = $row1['Instructions'];
			    $_SESSION['Title'] = $row1['Title'];
			    $_SESSION['Marks'] = $row1['Marks'];
			    $_SESSION['Type'] = $row1['Type'];
			}

			if(isset($_POST['frm_uploadlab'])){
			    $deadlinedate = trim(mysqli_real_escape_string($con, $_POST["deadlinedate"])); // remove spaces
			    $deadlinetime = trim(mysqli_real_escape_string($con, $_POST["deadlinetime"])); // remove spaces
			    $instructions = mysqli_real_escape_string($con, $_POST["instructions"]);
			    $title = mysqli_real_escape_string($con, $_POST["title"]);
			    $marks = mysqli_real_escape_string($con, $_POST["marks"]);
			    $type  = mysqli_real_escape_string($con, $_POST["type"]);
			    $Deadline = $deadlinedate." ".$deadlinetime;
			    $date =  date("Y-m-d H:i");

			    $sql = "UPDATE `lab_reports_table` SET `Deadline` = ('" . $Deadline . "'), `Instructions` = ('" . $instructions . "'), `Title` = ('" . $title . "'), `Marks` = ('" . $marks . "'), `Type` = ('" . $type . "') WHERE `lab_reports_table`.`Lab_Report_ID` = '$getid'";
			    if ($con->query($sql) === TRUE) {
				$_SESSION["info_Updated"]="Assignment information updated successfully.";

			    } else {
				// echo "Error: " . $sql . "<br>" . $con->error;
				echo "Serious error happened while updating assignment information.";
			    }
			}

			if(isset($_POST['frm_deletelab'])) {
			    $sql = "DELETE FROM lab_reports_table WHERE Lab_Report_ID='$getid'";
			    if ($con->query($sql) === TRUE) {
				$_SESSION["info_Updated"]="Assignment deleted successfully.";
			    } else {
				// echo "Error: " . $sql . "<br>" . $con->error;
				echo "Serious error happened while deleting the assignment.";
			    }
			}


			if( $_SESSION['user_type']=="Lecturer"){
			    $Date = $_SESSION['Date'];
			    $Time = $_SESSION['Time'];
			    $Instructions = $_SESSION['Instructions'];
			    $Title = $_SESSION['Title'];
			    $Marks = $_SESSION['Marks'];
			    $Type = $_SESSION['Type'];

			    echo "  <h3><a href='Courses.php?course=".$url."'>Editing assignment information</a></h3>";
            ?>
		<form method='post'   enctype='multipart/form-data' action=''>
                    <input type='hidden' name='frm_uploadlab' value='true' required=''/>
                    <input type='hidden' name='course_id' value='<?php echo "$id" ?>' required=''/>
                    <input type='hidden' name='url' value='<?php echo ".$course_url." ?>' required=''/>

                    Deadline Date/Time
                    <div class='row'>
			<div class='col-md-7'><input type='date' id='date' name='deadlinedate' placeholder='' class='form-control' required='' value="<?php echo isset($_GET['act']) && $_GET['act']=="edit" ? $Date : ""; ?>"> </div>
			<div class='col-md-5'> <input type='text' id='time' class='form-control' name='deadlinetime' value="<?php echo isset($_GET['act']) && $_GET['act']=="edit" ? $Time : ""; ?>"> </div>
                    </div>

                    Title
                    <input type='text'  name='title' placeholder='Title' class='form-control' required='' value="<?php echo isset($_GET['act']) && $_GET['act']=="edit" ? $Title : ""; ?>">
                    Instructions
                    <textarea  name='instructions' placeholder='Assignment Instructions' class='form-control' required='' ><?php echo isset($_GET['act']) && $_GET['act']=='edit' ? $Instructions : ''; ?></textarea>
                    Marks
                    <input type='text'  name='marks' placeholder='Marks' class='form-control' required='' value="<?php echo isset($_GET['act']) && $_GET['act']=="edit" ? $Marks : ""; ?>">
                    Attachment 1
                    <input type='file'  name='attachment1' placeholder='Attachment 1' class='form-control'>

                    Attachment 2
                    <input type='file' name='attachment2' placeholder='Attachment 1' class='form-control'>

                    Attachment 3
                    <input type='file'  name='attachment3' placeholder='Attachment 1' class='form-control' >


                    Attachment 4
                    <input type='file'  name='attachment4' placeholder='Attachment 4' class='form-control' >
                    <br>

		    <?php
                    if ($Type == "Individual") {
			echo "Submission Type  <input type='radio' name='type' value='Individual' checked /> Individual  <input type='radio' name='type' value='Group' /> Group";
                    } else {
			echo "Submission Type  <input type='radio' name='type' value='Individual' /> Individual  <input type='radio' name='type' value='Group' checked> Group";
                    }
                    ?>

		    <br>
                    <input type='submit' class='btn btn-primary' value='Update assignment'><br>
		</form><br><br><br><br>

		<form method='post' action=''>
                    <input type='hidden' name='frm_deletelab' value='true' required=''/>
                    <input type='submit' class='btn btn-danger' value='Delete assignment'><br>
		</form>

	    <?php
            }}else{

		// ------------------------------Posting New Lab Assignment------------------------------------

		// Mysql to split 1 string into 2 similar to the tsrstr in php
		// SELECT SUBSTRING_INDEX(Deadline, ' ', 1) as Date, SUBSTRING_INDEX(Deadline, ' ', -1) as Time from lab_reports_table

		if( $_SESSION['user_type']=="Lecturer"){

            ?>

		<h3>New assignment</h3>

		<form method='post'   enctype='multipart/form-data' action='Script.php'>
		    <?php
                    $_SESSION['url']=$url;
                    ?>
                    <input type='hidden' name='frm_uploadlab' value='true' required=''/>
                    <input type='hidden' name='course_id' value='<?php echo "$id" ?>' required=''/>
                    <input type='hidden' name='url' value='<?php echo ".$course_url." ?>' required=''/>

                    Deadline (date and time)
                    <div class='row'>
			<div class='col-md-7'><input type='date' id='date' name='deadlinedate' placeholder='' class='form-control' required='' value=""> </div>
			<div class='col-md-5'> <input type='time' class='form-control' name='deadlinetime' value=""> </div>
                    </div>

                    Title
                    <input type='text'  name='title' placeholder='Title' class='form-control' required='' value="">
                    Instruction
                    <textarea  name='instructions' placeholder='Assignment Instructions' class='form-control' required='' value=""></textarea>
                    Mark
                    <input type='text'  name='marks' placeholder='Marks' class='form-control' required='' value="">
                    Attachment 1
                    <input type='file'  name='attachment1' placeholder='Attachment 1' class='form-control'>

                    Attachment 2
                    <input type='file' name='attachment2' placeholder='Attachment 1' class='form-control'>

                    Attachment 3
                    <input type='file'  name='attachment3' placeholder='Attachment 1' class='form-control' >


                    Attachment 4
                    <input type='file'  name='attachment4' placeholder='Attachment 4' class='form-control' >
                    <br>
                    Submission type: <input type='radio' name='type' value='Individual' required=''> Individual

                    <input type='radio' name='type' value='Group' required=''> Group
                    <hr>
                    <input type='submit' class='btn btn-primary' value='Post'><br>
		</form><br><br><br><br>

	    <?php
            }
            }

            }
            echo "</div>";

            echo "<div class='col-md-7'><h3>Assignment list</h3>";

            error_reporting(0);
            if(isset($_SESSION["info_Updated"])){
		echo '<hr><div class="alert alert-warning" role="alert">' . $_SESSION['info_Updated'] . '</div>';
		$_SESSION['info_Updated'] = null;
            }
            if (isset($_SESSION['info_courses'])) {
		echo '<hr><div class="alert alert-warning" role="alert">' . $_SESSION['info_courses'] . '</div>';
		$_SESSION['info_courses'] = null;
            }
            if (isset($_SESSION['info_courses'])) {
		echo '<hr><div class="alert alert-warning" role="alert">' . $_SESSION['info_courses'] . '</div>';
		$_SESSION['info_courses']=null;
            }




            $result = mysqli_query($con," SELECT `Lab_Report_ID`,Type,Marks, `Course_ID`, `Posted_Date`, `Deadline`, `Instructions`, `Title`, `Attachment_link_1`, `Attachment_link_2`, `Attachment_link_3`, "
				      . "`Attachment_link_4` FROM `lab_reports_table` WHERE Course_ID=$id ORDER by Lab_Report_ID DESC");


            if( $_SESSION['user_type']=="TA")
            {
		echo "<b style='color:gray'>Only Lecturer can post assignments.</b><br>";
            }
            if(mysqli_num_rows($result)==0)
            {
		echo "No assignments posted so far.";

            } else { while($row = mysqli_fetch_assoc($result)) {
		$marks=$row['Marks'];
		$title=$row['Title'];
		$ins=$row['Instructions'];
		$posted=$row['Posted_Date'];
		$deadline=$row['Deadline'];
		$att1=$row['Attachment_link_1'];
		$att2=$row['Attachment_link_2'];
		$att3=$row['Attachment_link_3'];
		$att4=$row['Attachment_link_4'];
		$id=$row['Lab_Report_ID'];
		$cours_id=$row['Course_ID'];
		$as_type=$row['Type'];
		$full_link="<a href='~\..\Download.php?file=$att1'>$att1</a>";

		if($att2!=""){
                    $full_link= $full_link." &nbsp|&nbsp <a href='~\..\Download.php?file=$att2'>$att2</a>";
		}
		if($att3!=""){
                    $full_link= $full_link." &nbsp|&nbsp <a href='~\..\Download.php?file=$att3'>$att3</a>";
		}

		if($att4!=""){
                    $full_link= $full_link." &nbsp; | &nbsp <a href='~\..\Download.php?file=$att4'>$att4</a>";
		}




		$resultx1 = mysqli_query($con,"Select Count(*) as cnt from lab_report_submissions where lab_report_submissions.Lab_Report_ID=$id");
		while($row = mysqli_fetch_assoc($resultx1)) {$count_subs=$row['cnt'];}

		$resultx2 = mysqli_query($con,"Select COUNT(*) as cnt from lab_report_submissions where lab_report_submissions.Lab_Report_ID=$id and Marks is not null");
		if(mysqli_num_rows($resultx2)==0){$count_marked=0;} else { while($row = mysqli_fetch_assoc($resultx2)) {$count_marked =$row['cnt'];}}


		$header="Courses > ".$name."($code) > Assignments > ".$title;

		echo "      <div class='card mt-md-2'>
                                 <div class='card-body'>
                                     <h5 class='card-title'>$title ($marks Marks, $as_type)</h5>
                                     <h6 class='card-subtitle'>$ins</h6>
                                     <p class='card-text text-muted'><small>Posted: $posted &nbsp;&nbsp; Deadline: $deadline</small></p>
                                     <p class='card-text'>$count_subs Submissions ( $count_marked Marked )</p>
                                     <a class='card-link' href='Courses.php?course=".$url."&act=edit&cid=".$id."'> Edit </a>
                                     <a class='card-link' href='~\..\Submissions.php?id=$id&header=$header&total=$marks' onclick=''> View </a>
                                     <a class='card-link' href='#'  onclick='extendDeadline($id)'> Extend Deadline </a>
                                     <p class='card-text'> Attachments: $full_link</p>
                                  </div>
                             </div>";

            }}
            echo "</div>";

            $resultx1 = mysqli_query($con,"SELECT course_students_table.Student_ID,users_table.Full_Name FROM
`course_students_table`
INNER JOIN users_table on users_table.Student_ID=course_students_table.Student_ID
WHERE Course_ID=$course_id");


            echo "<span id='dropstudents' style='display:none;'> <select name='stdid'>";
            while($row = mysqli_fetch_assoc($resultx1))
            {
		$stdid=$row['Student_ID'];
		$stdname=$row['Full_Name'];

		echo "<option value='$stdid'> $stdname($stdid) </option> ";
            }
            echo "</select><br>Reason <input type='text' name='reason'>"
               . "<input type='hidden' name='url' value='$course_url'>"
               . " </span>";

            return;

	    }

	    ?>



	    <div class="col-md-8">

		<?php
		$user_name=$_SESSION['user_fullname'];

		echo "<h1 class='display-6'>My courses</h1>";

		$result = mysqli_query($con,"SELECT `Course_ID`, `Course_Name`, `Academic_Year`, `Faculty`,  `Lecturer_User_ID`, `TA_User_ID`, `Course_Code`, `URL`, `Verify_New_Members`, users_table.Full_Name  FROM `courses_table` INNER JOIN users_table ON users_table.User_ID=courses_table.Lecturer_User_ID where courses_table.Lecturer_User_ID=$user_d ORDER BY Academic_Year DESC, URL ASC");

		if($_SESSION['user_type']=="TA")
		{
		    $result = mysqli_query($con,"SELECT course_ta.Course_ID, `Course_Name`,
          `Academic_Year`, `Faculty`, `Lecturer_User_ID`, `TA_User_ID`, `Course_Code`, `URL`, `Verify_New_Members`   FROM `courses_table`
INNER JOIN
course_ta ON course_ta.Course_ID=courses_table.Course_ID where course_ta.TA=$user_d");

		}

		if(mysqli_num_rows($result) != 0)
		{
		    while($row = mysqli_fetch_assoc($result)) {
			$id = $row['Course_ID'];
			$name = $row['Course_Name'];
			$code = $row['Course_Code'];
			$faculty = $row['Faculty'];
			$lecturer = $row['Full_Name'];
			$academic = $row['Academic_Year'];
			$url = $row['URL'];

			$resultTA = mysqli_query($con,"SELECT `Course_ID`, `TA`,users_table.Full_Name as TA_NAME FROM `course_ta` INNER JOIN users_table on users_table.User_ID=course_ta.TA where course_ta.Course_ID=$id");

			$ta = "";
			while($rowTA = mysqli_fetch_assoc($resultTA)) {
			    $ta = $ta." ".$rowTA['TA_NAME'];
			}

			if ($ta == "") {
			    $ta = " None";
			}


			echo" <a href='~\..\Courses.php?course=$url'>
                          <div class='btn btn-default'>
                              ($code) - $name
                              <p class='text-muted'><small> Faculty: $faculty &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Year:  $academic  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  Lecturer: $lecturer  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  TA:$ta </small></p>
                         </div>
                         </a>";

		    }
		}
		?>

	    </div>
	    <div class="col-md-4">
		<br>
		<b> Course joining requests </b>



		<?php
		$lecturer_id= $_SESSION['user_id'];
		$result = mysqli_query($con,"SELECT  course_students_table.ID,users_table.Full_Name,  courses_table.Course_ID, `Course_Name`, `Academic_Year`, `Faculty`, `Lecturer_User_ID`, `TA_User_ID`, `Course_Code`, `URL`, `Verify_New_Members` FROM `courses_table`
INNER JOIN course_students_table on  course_students_table.Course_ID=courses_table.Course_ID
INNER JOIN users_table on users_table.Student_ID=course_students_table.Student_ID
WHERE  Lecturer_User_ID=$lecturer_id and course_students_table.Status='Pending'");

		if(mysqli_num_rows($result)==0)
		{

		    echo "<br>  <i class='fa fa-info-circle'></i>No course-joining request so far for your courses<hr>";
		} else { while($row = mysqli_fetch_assoc($result)) {
		    $id=$row['ID'];

		    $name=$row['Course_Name'];
		    $code=$row['Course_Code'];
		    $faculty=$row['Faculty'];
		    $std_name=$row['Full_Name'];
		    $academic=$row['Academic_Year'];

		    echo "<div class='btn btn-default'>
 $std_name is Requesting to join <br> [($code) - $name ] &nbsp;&nbsp;&nbsp;&nbsp; <br><a href='~\..\Script.php?AcceptStudent=y&id=$id&rs=yes' class='btn btn-sm btn-success' onclick=return confirm(\"are you sure to join this course?\")' > Accept </a>
 &nbsp;&nbsp;<a href='~\..\Script.php?AcceptStudent=y&id=$id&rs=no' class='btn btn-sm btn-danger' onclick=return confirm(\"are you sure to join this course?\")' > Decline </a>
</div>";

		}
		}
		?>


		<?php
		if( $_SESSION['user_type']=="TA")
		{
		    echo "<center>Only Lecturer can post assignments</center>";
		}
		if( $_SESSION['user_type']=="Lecturer"){ ?>

		    <b>Create a new course</b>

		    <form method="post" action="Script.php">
			<input type="hidden" name="frm_createCourse" value="true" required=""/>
			<input type="hidden" name="l" value="l" required=""/>
			Course name
			<input type="text" name="name" placeholder="Course Name" class="form-control" required="">

			Course code
			<input type="text" name="code" placeholder="Course Code" class="form-control" required="">

			URL (leave blank to use course code & year)
			<input type="text" name="url" placeholder="Choose Custom URL " class="form-control">

			Academic year
			<input type="text" name="academic" placeholder="Academic Year" class="form-control" required="">

			Faculty <br>
			<input type="text" name="faculty" placeholder="Faculty" class="form-control" required="">


			<input type="hidden" name="lecturer" value="<?php echo $_SESSION['user_id'];  ?>">


			Verify joining students?
			<input type="radio" name="verify" value="1"> Yes
			<input type="radio" name="verify" value="0" checked=""> No

			<br><br>
			<input type="submit" class="btn btn-primary" value="Create"><br>

		    </form>

		<?php }  ?>

            </div>


	    <!--   END LECTURER   -->

    <?php
    }


    if( $_SESSION['user_type']=="Student")
    {
    ?>

	<!--STUDENT CODE-->
	<div class="row">
	    <div class="col-md-6">

		<?php

		error_reporting(0);
		if (isset($_SESSION['info_Courses_student'])) {
		    echo '<hr><span class="alert alert-success" role="alert">' . $_SESSION['info_Courses_student'] . '</span>';
		    $_SESSION['info_Courses_student'] = null;
		}
		?>
		<br><br>
	    </div>
	    <div class="col-md-6"></div>
	</div>


	<div class="row">
	    <div class="col-md-6">

		<?php
		error_reporting(0);
		$student_id= $_SESSION['user_student_id'];
		// current academic year - i.e 2021 - 2022 , so we will show in search result:
		// course containing either 2021 or 2022 as academic year.
		$oldest_academic_year = date('Y') - 1;
		if(!empty($_GET["search"]) || !empty($_GET["faculty"]))
		{
		    $search = trim(mysqli_real_escape_string($con, $_GET["search"]));
		    $search = strtoupper($_GET['search']);
		    $faculty = mysqli_real_escape_string($con, $_GET["faculty"]);

		    // the user has not entered something under "Find course by Code"
		    if($faculty=="")
		    {
			echo "<h4> Search results for course code: $search </h4><hr>";
			$result = mysqli_query($con,"SELECT `Course_ID`, `Course_Name`, `Academic_Year`, `Faculty`,"
						  . " `Lecturer_User_ID`, `TA_User_ID`, `Course_Code`, `URL`, `Verify_New_Members`  "
						  . " , users_table.Full_Name  FROM `courses_table` INNER JOIN users_table"
						  . " ON users_table.User_ID=courses_table.Lecturer_User_ID where Academic_Year >= $oldest_academic_year and Course_Code like '%{$search}%'  and courses_table.Course_ID not in (select course_id from course_students_table where Student_ID=$student_id) order by Academic_Year desc");
		    }
		    // the user has entered something under "Find course by Code"
		    else
		    {
			echo "<h3> Find courses under faculty: $faculty</h3>";
			$result = mysqli_query($con,"SELECT `Course_ID`, `Course_Name`, `Academic_Year`, `Faculty`,
       `Lecturer_User_ID`, `TA_User_ID`, `Course_Code`, `URL`, `Verify_New_Members`
         , users_table.Full_Name  FROM `courses_table` INNER JOIN users_table
         ON users_table.User_ID=courses_table.Lecturer_User_ID where Academic_Year >= $oldest_academic_year  and Faculty='$faculty'  and courses_table.Course_ID not in (select course_id from course_students_table where Student_ID=$student_id) order by Academic_Year desc");
		    }


		    if(mysqli_num_rows($result)==0)
		    {
			echo "No results. <hr>";

		    } else {

			while($row = mysqli_fetch_assoc($result)) {
			    $name=$row['Course_Name'];
			    $code=$row['Course_Code'];
			    $faculty=$row['Faculty'];
			    $lecturer=$row['Full_Name'];
			    $academic=$row['Academic_Year'];
			    $url=$row['URL'];
			    $id=$row['Course_ID'];
			    $v=$row['Verify_New_Members'];
			    if($v>0)
			    {
				$msg="<i class='fa fa-exclamation-circle'></i> Lecturer verification required";
				$msg2="Send Joining Request";
			    }

			    echo "<div class='btn btn-default' style='word-wrap:break-word'>
  ($code) $name <br>($url) <br>  <a href='~\..\Script.php?JoinCourse=y&id=$id&std=$student_id&joining=$v' class='btn btn-sm btn-success' onclick=return confirm(\"Are you sure to join this course?\")' >Join</a>
   <br> <span style='font-size:10pt'>Faculty: $faculty &nbsp; Year: $academic &nbsp; Lecturer: $lecturer </span><br>$msg</div>
                            ";
			}
		    }
		}
		// Otherwise, list the student's joined courses (already done), in reverse chronological order
		echo "<h1 class='display-6'> My courses </h1>";
		$result = mysqli_query($con,"SELECT users_table.Full_Name, course_students_table.Status, courses_table.Course_ID, `Course_Name`, `Academic_Year`, `Faculty`, `Lecturer_User_ID`, `TA_User_ID`, `Course_Code`, `URL`, `Verify_New_Members` FROM `courses_table`
INNER JOIN users_table
          ON users_table.User_ID=courses_table.Lecturer_User_ID

INNER JOIN course_students_table on course_students_table.Course_ID=courses_table.Course_ID

                  where course_students_table.Student_ID=$student_id ORDER BY Academic_Year DESC, URL ASC");

		if(mysqli_num_rows($result)==0)
		{
		    echo "<i class='fa fa-exclamation-circle'></i> You are not enrolled in any Course";
		} else {
		    while($row = mysqli_fetch_assoc($result)) {
			$name=$row['Course_Name'];
			$code=$row['Course_Code'];
			$faculty=$row['Faculty'];
			$lecturer=$row['Full_Name'];
			$academic=$row['Academic_Year'];
			$url=$row['URL'];
			$id=$row['Course_ID'];
			$Status=$row['Status'];

			if($Status=="Joined")
			{
			    echo "<a href='~\..\Course.php?url=$url'>   <div class='btn btn-default' style='word-wrap:break-word'>
  ($code) - $name <br>($url)       &nbsp;&nbsp;&nbsp; <i class='fa fa-check-circle'></i> $Status   &nbsp;&nbsp;&nbsp;&nbsp;
   <br> <span style='font-size:8pt'>Faculty: $faculty &nbsp; Year: $academic  &nbsp; Lecturer: $lecturer </span></div></a>
                            ";
			}
			else
			{
			    echo "<div class='btn btn-default'>
  ($code) - $name  <i class='btn btn-sm btn-danger'> $Status</i>
   <br> <span style='font-size:8pt'>Faculty: $faculty &nbsp; Year: $academic &nbsp; Lecturer: $lecturer </span></div>
                            ";
			}
		    }
		}

		echo "</div><div class='col-md-6'>

        <form method='get' action='Courses.php'>
            <div class='row'>
                <div class='col-md-12'>
                    <div class='row'>
                        <div class='col-md-5'>
                            Find new course by course code
                            <input  type='text' class='form-control' name='search' maxlength='11' placeholder='Enter course code'>
                        </div>

                        <div class='col-md-5'>
                            List courses by faculty
                            <select name='faculty' class='form-control'>";
		$result = mysqli_query($con,"SELECT   DISTINCT(Faculty) as Faculty FROM `courses_table`");
		if(mysqli_num_rows($result)==0){
		} else {
		    echo"           <option value=''>Search by faculty</option>";
		    while($row = mysqli_fetch_assoc($result)) {
			$fname=$row['Faculty'];
			echo "      <option value='$fname'> $fname </option>";
		}}

		echo "          </select>
                        </div>

                        <div class='col-md-2'> <br>
                            <button type='submit' class='btn btn-primary'>Find</button>
                       </div>
                    </div>
                </div>
            </div>
        </form>

    </div></div>";

		}

		?>

		<?php include 'Footer.php';?>

	    </div>

</body>
</html>