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dashboard.php
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dashboard.php
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<?php
// Start a session
session_start();
// Check if the user is not logged in
if (!isset($_SESSION['user_id'])) {
// Redirect to the login page
header('Location: index.php');
exit();
}
// Get the user ID and role from the session
$user_id = $_SESSION['user_id'];
$role = $_SESSION['role'];
// Include the db_connection.php file
require_once 'db_connection.php';
// Define variables to store the retrieved data
$total_students = 0;
$total_courses = 0;
$instructor_courses = array();
$student_courses = array();
$student_grades = array();
// Retrieve data based on the user's role
if ($role === 'admin') {
// Get the total number of students
$stmt_total_students = $mysqli->prepare('SELECT COUNT(*) FROM students');
$stmt_total_students->execute();
$stmt_total_students->bind_result($total_students);
$stmt_total_students->fetch();
$stmt_total_students->close();
// Get the total number of courses
$stmt_total_courses = $mysqli->prepare('SELECT COUNT(*) FROM courses');
$stmt_total_courses->execute();
$stmt_total_courses->bind_result($total_courses);
$stmt_total_courses->fetch();
$stmt_total_courses->close();
}
// Close the database connection
$mysqli->close();
?>
<!DOCTYPE html>
<html>
<head>
<title>Dashboard</title>
<!-- Include Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<style>
body {
background-color: #f8f9fa;
padding: 40px;
}
.dashboard-container {
max-width: 800px;
margin: 0 auto;
}
.dashboard-card {
margin-bottom: 20px;
padding: 20px;
background-color: #fff;
border-radius: 10px;
box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}
.dashboard-card h2 {
margin-bottom: 20px;
font-size: 24px;
color: #333;
}
.dashboard-card ul {
list-style: none;
padding: 0;
}
.dashboard-card ul li {
margin-bottom: 10px;
}
.dashboard-card .dashboard-link {
display: block;
padding: 10px 20px;
border-radius: 5px;
text-decoration: none;
transition: background-color 0.3s, transform 0.3s;
font-weight: bold;
color: #007bff;
}
.dashboard-card .dashboard-link.view {
color: #28a745;
}
.dashboard-card .dashboard-link.add {
color: #dc3545;
}
.dashboard-card .dashboard-link:hover {
background-color: #EEEEEE;
transform: scale(1.02); /* Add scale transform on hover */
}
.dashboard-card .dashboard-link:after {
content: '';
display: inline-block;
vertical-align: middle;
margin-left: 5px;
width: 0;
height: 0;
border-top: 5px solid transparent;
border-bottom: 5px solid transparent;
border-left: 5px solid currentColor;
}
.list-unstyled{
margin-top: 10px;
}
.logout-link {
display: block;
margin-top: 20px;
padding: 10px 20px;
background-color: #dc3545; /* Red color */
color: #fff; /* White text color */
border-radius: 5px;
text-decoration: none;
font-weight: bold;
text-align: center;
transition: background-color 0.3s, transform 0.3s; /* Add CSS transition for background color and transform */
}
.logout-link:hover {
background-color: #c82333; /* Darker shade of red on hover */
transform: scale(1.02); /* Add scale transform on hover */
text-decoration: none;
color: #fff;
}
.total-card {
background-color: #007bff;
color: #fff;
padding: 20px;
border-radius: 10px;
text-align: center;
}
.total-card h3 {
font-size: 24px;
margin-bottom: 10px;
}
.total-card p {
font-size: 20px;
margin-bottom: 0;
}
</style>
</head>
<body>
<div class="dashboard-container">
<div class="dashboard-card text-center">
<h2>Welcome to the Dashboard</h2>
<!-- Display user-specific content based on role -->
<?php if ($role === 'admin') { ?>
<div class="alert alert-primary" role="alert">
<h3>Admin Dashboard</h3>
</div>
<!-- Beautiful cards for displaying total students and total courses -->
<div class="row">
<div class="col-md-6">
<div class="total-card">
<h3>Total Students</h3>
<p><?php echo $total_students; ?></p>
</div>
</div>
<div class="col-md-6">
<div class="total-card">
<h3>Total Courses</h3>
<p><?php echo $total_courses; ?></p>
</div>
</div>
</div>
<!-- Display admin-specific options and functionalities -->
<ul class="list-unstyled">
<li><a class="dashboard-link add" href="add_student.php">Add Student</a></li>
<li><a class="dashboard-link view" href="view_students.php">Manage Students</a></li>
<li><a class="dashboard-link add" href="add_course.php">Add Course</a></li>
<li><a class="dashboard-link view" href="view_courses.php">Manage Courses</a></li>
<!-- Add more admin-specific options here -->
</ul>
<?php } elseif ($role === 'instructor') { ?>
<div class="alert alert-success" role="alert">
<h3>Instructor Dashboard</h3>
</div>
<!-- Display instructor-specific options and functionalities -->
<ul class="list-unstyled">
<li><a class="dashboard-link" href="assign_grade.php">Assign Grades</a></li>
<li><a class="dashboard-link view-grades" href="view_grades.php">View Grades</a></li>
<!-- Add more instructor-specific options here -->
</ul>
<?php } else { ?>
<div class="alert alert-info" role="alert">
<h3>Student Dashboard</h3>
</div>
<!-- Display student-specific options and functionalities -->
<ul class="list-unstyled">
<li><a class="dashboard-link view-courses" href="view_courses.php">View Courses</a></li>
<li><a class="dashboard-link view-grades" href="view_grades.php">View Grades</a></li>
<!-- Add more student-specific options here -->
</ul>
<?php } ?>
<!-- Logout link -->
<a class="logout-link" href="logout.php">Logout</a>
</div>
</div>
<!-- Include Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.5.4/dist/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
</body>
</html>