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

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


<?php
// Only Lecturer or Admin could access this page
if ($_SESSION['user_type'] != "Lecturer" && $_SESSION['user_type'] != "Admin") {
    die("Sorry.  Nothing to see here.");
}
?>


<br>
<div style="width: 80%;margin: auto;">
    <h2> Administration panel </h2>
</div>

<hr>
<div class="row" style="width: 80%;margin: auto;">

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

	<!-- <?php 
	     if ($_SESSION['user_type'] == "Lecturer") {
             
             echo " <h4> TA Account Management </h4> <hr> " ;
             echo    "<b>TA Accounts </b><br>" ;
	     }
	     else if($_SESSION['user_type'] == "Admin"){
             echo " <h4> Lecturer Account Management </h4> 
             <hr> ";
             echo "<b>Lecturer Accounts </b><br>";
	     }
	     
	     ?> -->

	<div class="container">

	    <!-- Nav tabs -->
	    <ul class="nav nav-tabs" role="tablist">

		<li class="nav-item">
		    <a class="nav-link active" data-toggle="tab" href="#home">Create TA account</a>
		</li>

		<li class="nav-item">
		    <a class="nav-link" data-toggle="tab" href="#menu1" id="batch_tab">Batch create student accounts</a>
		</li>

		<li class="nav-item">
		    <a class="nav-link" data-toggle="tab" href="#menu2" id="existing_accounts_tab">Existing accounts</a>
		</li>

	    </ul>

	    <!-- Tab panes -->
	    <div class="tab-content">

		<div id="home" class="container tab-pane active"><br>

		    <?php 
		    if ($_SESSION['user_type'] == "Lecturer") {
			
			echo "<b>Create TA Accounts </b>";
			
		    }
		    else if($_SESSION['user_type'] == "Admin"){
			echo "<b>Create Lecturer Accounts </b>";
		    }
		    
		    ?>
		    <form method="post" action="Script.php" id="create_account_form">
			<input type="hidden" name="frm_createlecturrer" value="true" required="" />
			Full name
			<input type="text" name="fullname" placeholder="Full Name" class="form-control" required="">
			Email
			<input type="text" name="email" placeholder="Email / Student Number" class="form-control" required="">

			Passport number/ID (used as the initial password)
			<input type="text" class="form-control" name="passport" placeholder="Passport No./ID" required="">
			<br> User type:

			<?php 

			if ($_SESSION['user_type'] == "Lecturer") {
			    
			    echo ' <input type="radio" name="type" value="TA" required="" id="role_TA"> TA (Teaching Assistant) ';

			}
			else if($_SESSION['user_type'] == "Admin"){
			    
			    echo " <input type='radio' name = 'type' value = 'Lecturer' required = '' id='role_lecturer' > Lecturer ";
			    
			}

			?>  

			<input type="submit" class="btn btn-primary" value="Create" id="create_btn"><br>
			
			<?php

			error_reporting(E_ALL);
			if (isset($_SESSION['info_Admin_Users'])) {
			    echo  '<hr><div class="alert alert-info" role="alert">' . $_SESSION['info_Admin_Users'] . '</div>';
			    $_SESSION['info_Admin_Users'] = null;
			}
			if (isset($_SESSION['info_Admin_Users'])) {
			    echo  '<hr><div class="alert alert-info" role="alert">' . $_SESSION['info_Admin_Users'] . '</div>';
			    $_SESSION['info_Admin_Users'] = null;
			}

			?>

		    </form>

		    <hr>

		</div>


		<!-- code contributed by Xu Xiaopeng (https://github.com/xxp1999) -->
		<div id="menu1" class="container tab-pane fade" style="margin-top:10px">
		    <b>Separate two student numbers with a space</b><br>
		    <form action="batch_insert.php" method="post" id="batch_form">
			<p>
			    <textarea cols="70" rows="16" name="users" required=""></textarea>
			</p>
			<input type="submit" class="btn btn-primary" value="Register students" id="register_btn"><br>
		    </form>
		</div>


		<div id="menu2" class="container tab-pane fade"><br>

		    <table class="table-bordered" style="font-size: 10pt;">
			<tr style="font-size:10pt;">
			    <th>ID</th>
			    <th>Name</th>
			    <th>Email</th>
			    <th>Passport / ID </th>
			    <th>Reset password </th>
			    <th>Block/Activate </th>
			</tr>
			<?php

			if ($_SESSION['user_type'] == "Lecturer") {
                            
			    $result = mysqli_query(
				$con,
				"SELECT * FROM users_table WHERE UserType in ('TA')"
			    );
			}

			else if ($_SESSION['user_type'] == "Admin"){
			    $result = mysqli_query(
				$con,
				"SELECT * FROM users_table WHERE UserType in ('Lecturer')"
			    );
			}

			while ($row = mysqli_fetch_assoc($result)) {
			    $pass = $row['Passport_Number'];
			    $btn = "<button class='btn-warning' onclick=\"updatePass(" . $row['User_ID'] . ",'$pass')\">Reset</button>";
			    if ($row['Status'] == "Active") {
				$newstatus = "Blocked";
				$btnBlock = "<button class='btn-danger' onclick=\"blockUser(" . $row['User_ID'] . ",'$newstatus')\" id=\"block_account_1\">Block</button>";
			    } else {
				$newstatus = "Active";
				$btnBlock = "<button class='btn-success' onclick=\"blockUser(" . $row['User_ID'] . ",'$newstatus')\" id=\"activate_account_1\">Activate</button>";
			    }

			    echo "<tr><td>" . $row['User_ID'] . "</td><td>" . $row['Full_Name'] . "</td><td>" . $row['Email'] . "</td> <td>" . $row['Passport_Number'] . "</td><td>$btn</td><td>$btnBlock</td></tr>";
			}
			?>
		    </table>

		</div>

	    </div>
	</div>

    </div>

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

	<div class="container">
	    <ul class="nav nav-tabs" role="tablist">
		<li class="nav-item">
		    <a class="nav-link active" data-toggle="tab" href="#menu3" id="existing_courses">Existing courses</a>
		</li>

	    </ul>
        </div>

        <div id="menu3" class="container tab-pane active"><br>

            <b> Past courses </b>
            <hr>
            <table class="table-bordered" style="font-size: 10pt;">
		<tr>
		    <th>Course Name</th>
		    <th>Faculty</th>
		    <th>Lecturer</th>
		    <th>TAs</th>
		    <th>Assign new TA </th>
		</tr>
		<?php
		$user_id = $_SESSION['user_id'];
		$result = mysqli_query($con, "SELECT `Course_ID`, `Course_Name`, `Academic_Year`, `Faculty`, `TA_User_ID`, `Course_Code`, `Full_Name` FROM courses_table INNER JOIN users_table ON users_table.User_ID=courses_table.Lecturer_User_ID WHERE User_ID=$user_id ORDER BY Academic_Year DESC;");
		if (mysqli_num_rows($result) == 0) {
		} else {
		    $counter = 0;
		    while ($row = mysqli_fetch_assoc($result)) {
			$name = $row['Course_Name'];
			$code = $row['Course_Code'];
			$faculty = $row['Faculty'];
			$lecturer = $row['Full_Name'];
			$academic = $row['Academic_Year'];
			$c_id = $row['Course_ID'];
			$counter += 1;

			$resultTA = mysqli_query($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=$c_id");

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

			echo "  
                          <tr> <td>$code - $name</td>  <td>$faculty </td> <td>$lecturer</td><td>$ta</td>  <td><form method='get' action='Script.php' id='drop_menu_form_$counter'> <select name='ta' class=''>";

			$resultx = mysqli_query($con, "SELECT * FROM users_table WHERE UserType='TA'");
			if (mysqli_num_rows($resultx) == 0) {
			} else {
			    while ($row = mysqli_fetch_assoc($resultx)) {
				$id = $row['User_ID'];
				$name = $row['Full_Name'];
				echo "<option value='$id'> $name </option>";
			    }
			}

			echo "</select>  <input type='hidden' name='assignTA' value='true'> <input type='hidden' name='id' value='$c_id'>  <input type='submit' value='assign' id='assign_btn_$counter'></form> </td></tr>
                        ";
		    }
		} ?>

            </table>

        </div>

    </div>

</div>

<script>
 function updatePass(id, pass) {
     if (!confirm('Are you sure to reset user password?')) {
         return;
     }

     window.location.href = "\Script.php\?action=passchange&uid=" + id + "&pass=" + pass;
 }

 function blockUser(id, status) {
     if (!confirm('Are you sure to change user status?')) {
         return;
     }
     window.location.href = "\Script.php\?action=statuschange&uid=" + id + "&status=" + status;
 }
</script>