";
            }
    
            // ------------------------------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 "  
";
                    ?> 
                    
 
        
                     Post new Lab Assignment  
                
                    
                     
"; 
       
        echo "
   Lab Report 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( $_SESSION['user_type']=="TA")
        {
            echo "
*Only Lecturer can post a new lab report assignment ";
        }
        if(mysqli_num_rows($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 "      
  $title ($as_type) 
 $ins
  
    
Posted : $posted  Deadline :   $deadline     ($marks Marks)                     "
                . "    $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;
    }
  
    ?>
    
    
 ";
   
                     
    $result = mysqli_query($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");
 
    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");
    }
    // $result = mysqli_query($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");
 
    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  
 
                        ";
   
        }}?>
    
    
    
          
 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 found for your Search 
";
        } 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'];
                $msg2="Join Course";
                if($v>0)
                {
                    $msg="
 Lecturer verification required";
                    $msg2="Send Joining Request";
                }
               
                echo "
  [$code] $name 
($url)   
 $msg2  
    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");
 
    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) - $name 
($url)           
 $Status        
 Open 
    Faculty : $faculty  Year :   $academic  Lecturer  :$lecturer   
                        ";  
            }
            else
            {
                echo "
  ($code) - $name   $Status 
   Faculty : $faculty  Year :   $academic  Lecturer  :$lecturer  
                        "; 
            }
        }
    } 
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
   
    
    
    
    
    
    
    
    
    echo "
 "; 
    
        
}
       
?>