";
		}
		    
		    // ------------------------------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 . "
" . $con->error;
				echo "Serious error happened whiling updating assignment information.";
			    }
			}
			
			if( $_SESSION['user_type']=="Lecturer"){   
			    $Date = $_SESSION['Date'];
			    $Time = $_SESSION['Time'];
			    $Instructions = $_SESSION['Instructions'];
			    $Title = $_SESSION['Title'];
			    $Marks = $_SESSION['Marks'];
			    $Type = $_SESSION['Type'];
			    
			    echo "  
";
            ?> 
		
	     
		
		New an assignment 
		
		
		    
                     
	    "; 
	    
            echo "
Assignment list ";  
            
            error_reporting(0);
            if(isset($_SESSION["info_Updated"])){
		echo '
' . $_SESSION['info_Updated'] . '
';
		$_SESSION['info_Updated'] = null;
            }
            if (isset($_SESSION['info_courses'])) {
		echo '
' . $_SESSION['info_courses'] . '
';
		$_SESSION['info_courses'] = null;
            }
            if (isset($_SESSION['info_courses'])) {
		echo '
' . $_SESSION['info_courses'] . '
';
		$_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( $_SESSION['user_type']=="TA")
            {
		echo "
Only Lecturer can post assignments. ";
            }
            if(mysqli_num_rows($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="
$att1 ";      
		
		if($att2!=""){
                    $full_link= $full_link."  |  
$att2 ";    
		}
		if($att3!=""){
                    $full_link= $full_link."  |  
$att3 ";    
		}
		
		if($att4!=""){
                    $full_link= $full_link."   |   
$att4 ";    
		}
		
		
		
		
		$resultx1 = mysqli_query($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 "      
  $title ($marks Marks, $as_type) 
 $ins
  
    
Posted: $posted   Deadline: $deadline"
		   . "    $count_subs Submissions ( $count_marked Marked )       Edit    |   View          |            Extend Deadline               "
		   . "  
		   ";
		
		
		
            }}
            echo "
";
	    
            $resultx1 = mysqli_query($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 "
 ";
            while($row = mysqli_fetch_assoc($resultx1)) 
            {
		$stdid=$row['Student_ID'];
		$stdname=$row['Full_Name'];
		
		echo " $stdname($stdid)   ";
            }  
            echo "  ";
	    
            return;
	    }
	    
	    ?>
	    
	    
		
		My courses";
		
		$result = mysqli_query($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($result)==0)
		{} else { while($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'];
		    }
                    
                    
                    
		    echo"  
                  
                         
   
  ($code) - $name 
   Faculty : $faculty        Year :  $academic          Lecturer  :$lecturer          TA:$ta  
 
                    ";
		    
		}}?>
	    
	
	    ' . $_SESSION['info_Courses_student'] . ' ';
		$_SESSION['info_Courses_student'] = null;
	    }
	    ?>
	    
	
     
    
	
	    
	     Search results for course code: $search 
";
		    $result = mysqli_query($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 "
 Find courses under faculty: $faculty ";
		    $result = mysqli_query($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. 
";
		} 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="
 Lecturer verification required";
			    $msg2="Send Joining Request";
			}
			
			echo "
  ($code) $name 
($url)   
Join 
    Faculty: $faculty   Year: $academic   Lecturer: $lecturer  $msg
                        ";
		    }
		}
	    }
	    // Otherwise, list the student's joined courses (already done), in reverse chronological order
	    echo "
 My courses  ";
	    $result = mysqli_query($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($result)==0)
	    {
		echo "
 You are not enrolled in any Course";
	    } else {
		while($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 "
   
  ($code) - $name Faculty: $faculty   Year: $academic    Lecturer: $lecturer  
 
                        ";  
		    }
		    else
		    {
			echo "
  ($code) - $name   $Status 
   Faculty: $faculty   Year: $academic   Lecturer: $lecturer  
                        "; 
		    }
		}
	    } 
	    
	    echo "
    
        
             
                
                    
                        
                            Find new course by course code
                            
                        
                            List courses by faculty
                            ";
            $result = mysqli_query($con,"SELECT   DISTINCT(Faculty) as Faculty FROM `courses_table`");
            if(mysqli_num_rows($result)==0){
            } else { 
		echo"           Search by faculty ";
		while($row = mysqli_fetch_assoc($result)) {
                    $fname=$row['Faculty'];
                    echo "       $fname  ";
            }}
            echo "           
                        
                         Find 
                       
                     
                 
             
         
      "; 
            
	    }
	    
	    ?>