<?php
// Start session
session_start();
// Check if user is logged in
if (!isset($_SESSION['user_id']) || $_SESSION['role'] !== 'student') {
header('Location: ../login.php');
exit();
}
// Include database connection and header
require_once('../config/database.php');
// Get course ID from URL
if (!isset($_GET['id']) || empty($_GET['id'])) {
echo "<script>window.location.href = 'index.php';</script>";
exit();
}
$courseId = intval($_GET['id']);
$userId = $_SESSION['user_id'];
// Check if the user is enrolled in this course
$stmt = $conn->prepare("
SELECT * FROM enrollments
WHERE user_id = ? AND course_id = ?
");
$stmt->bind_param('ii', $userId, $courseId);
$stmt->execute();
$result = $stmt->get_result();
if ($result->num_rows === 0) {
echo "<script>window.location.href = 'my_courses.php';</script>";
exit();
}
$enrollment = $result->fetch_assoc();
// Get course details with instructor information
$stmt = $conn->prepare("
SELECT c.*,
CONCAT(u.first_name, ' ', u.last_name) as instructor_name
FROM courses c
LEFT JOIN users u ON c.instructor_id = u.id
WHERE c.id = ?
");
$stmt->bind_param('i', $courseId);
$stmt->execute();
$result = $stmt->get_result();
if ($result->num_rows === 0) {
$error_message = 'Course not found';
} else {
$course = $result->fetch_assoc();
// Format course data
$courseData = [
'id' => $course['id'],
'title' => $course['title'],
'description' => $course['description'] ?? '',
'duration' => $course['duration'] ?? '',
'price' => $course['price'] ?? 0,
'discount_price' => $course['discount_price'] ?? 0,
'image' => $course['image'] ?? '',
'status' => $course['status'] ?? 'active',
'instructor_name' => $course['instructor_name'] ?? 'Not Assigned',
'enrollment_date' => date('M d, Y', strtotime($enrollment['enrollment_date'])),
'enrollment_status' => $enrollment['status'],
'completion_date' => $enrollment['completion_date'] ? date('M d, Y', strtotime($enrollment['completion_date'])) : null,
'certificate_number' => $enrollment['certificate_number'] ?? null,
'certificate_path' => $enrollment['certificate_path'] ?? null
];
// Get payment information if exists
$stmt = $conn->prepare("
SELECT
SUM(amount) as total_paid,
MAX(payment_date) as last_payment_date,
COUNT(*) as payment_count
FROM payments
WHERE user_id = ? AND course_id = ? AND status IN ('completed', 'verified')
");
$stmt->bind_param('ii', $userId, $courseId);
$stmt->execute();
$result = $stmt->get_result();
$paymentInfo = [
'total_paid' => 0,
'payment_count' => 0,
'last_payment_date' => null
];
if ($result->num_rows > 0) {
$payment = $result->fetch_assoc();
$paymentInfo['total_paid'] = floatval($payment['total_paid'] ?? 0);
$paymentInfo['payment_count'] = intval($payment['payment_count'] ?? 0);
$paymentInfo['last_payment_date'] = $payment['last_payment_date']
? date('M d, Y', strtotime($payment['last_payment_date']))
: null;
}
// Get course fee based on payment plan
$course_fee = $courseData['discount_price'] > 0 && $courseData['discount_price'] < $courseData['price']
? $courseData['discount_price']
: $courseData['price'];
if ($enrollment['payment_plan'] === 'monthly') {
$paymentInfo['fee_amount'] = round($course_fee / 12, 2);
$paymentInfo['total_fee'] = $course_fee;
$paymentInfo['payments_count'] = 12;
$paymentInfo['payment_type'] = 'Monthly';
} else if ($enrollment['payment_plan'] === 'six_month') {
$paymentInfo['fee_amount'] = round($course_fee / 6, 2);
$paymentInfo['total_fee'] = $course_fee;
$paymentInfo['payments_count'] = 6;
$paymentInfo['payment_type'] = 'Six-Month';
} else {
$paymentInfo['fee_amount'] = $course_fee;
$paymentInfo['total_fee'] = $course_fee;
$paymentInfo['payments_count'] = 1;
$paymentInfo['payment_type'] = 'Full Payment';
}
// Calculate remaining amount
$paymentInfo['remaining_amount'] = max(0, $paymentInfo['total_fee'] - $paymentInfo['total_paid']);
// Ensure payment progress is properly calculated and capped at 100%
if ($paymentInfo['total_fee'] > 0) {
$paymentInfo['payment_progress'] = min(100, round(($paymentInfo['total_paid'] / $paymentInfo['total_fee']) * 100));
} else {
$paymentInfo['payment_progress'] = 0;
}
// If total paid is greater than or equal to total fee, set progress to 100%
if ($paymentInfo['total_paid'] >= $paymentInfo['total_fee']) {
$paymentInfo['payment_progress'] = 100;
$paymentInfo['remaining_amount'] = 0;
}
// Get next payment amount
$paymentInfo['next_payment'] = min($paymentInfo['remaining_amount'], $paymentInfo['fee_amount']);
// Add additional payment status information
$paymentInfo['is_paid_in_full'] = $paymentInfo['total_paid'] >= $paymentInfo['total_fee'];
$paymentInfo['payment_status'] = $paymentInfo['is_paid_in_full'] ? 'Completed' : 'In Progress';
}
// Include header file
require_once('includes/header.php');
?>
<!-- Content Wrapper -->
<div id="content-wrapper" class="d-flex flex-column">
<!-- Main Content -->
<div id="content">
<?php require_once('includes/topbar.php'); ?>
<!-- Begin Page Content -->
<div class="container-fluid">
<!-- Page Heading -->
<div class="d-sm-flex align-items-center justify-content-between mb-4">
<h1 class="h3 mb-0 text-gray-800">Course Details</h1>
<a href="enrolled_courses.php" class="d-none d-sm-inline-block btn btn-sm btn-primary shadow-sm">
<i class="fas fa-arrow-left fa-sm text-white-50"></i> Back to Courses
</a>
</div>
<?php if (isset($error_message)): ?>
<!-- Error Alert -->
<div class="alert alert-danger" role="alert">
<?php echo $error_message; ?>
</div>
<?php else: ?>
<!-- Course Details Section -->
<div class="row">
<!-- Course Information Card -->
<div class="col-xl-4 col-md-6 mb-4">
<div class="card border-left-primary shadow h-100">
<div class="card-header py-3 d-flex flex-row align-items-center justify-content-between">
<h6 class="m-0 font-weight-bold text-primary">Course Information</h6>
</div>
<div class="card-body">
<div class="text-center mb-3">
<?php if ($courseData['image'] && $courseData['image'] !== ''): ?>
<img src="../uploads/courses/<?php echo $courseData['image']; ?>" class="img-fluid rounded" style="max-height: 150px;" alt="Course Image">
<?php else: ?>
<img src="../assets/img/course-placeholder.jpg" class="img-fluid rounded" style="max-height: 150px;" alt="Course Image">
<?php endif; ?>
</div>
<h4 class="font-weight-bold text-center mb-3"><?php echo $courseData['title']; ?></h4>
<div class="mb-2">
<strong><i class="fas fa-user-tie mr-2"></i>Instructor:</strong>
<span class="ml-2"><?php echo $courseData['instructor_name']; ?></span>
</div>
<div class="mb-2">
<strong><i class="fas fa-calendar-alt mr-2"></i>Enrolled:</strong>
<span class="ml-2"><?php echo $courseData['enrollment_date']; ?></span>
</div>
<div class="mb-2">
<strong><i class="fas fa-clock mr-2"></i>Duration:</strong>
<span class="ml-2"><?php echo $courseData['duration'] ?: 'Not specified'; ?></span>
</div>
<div class="mb-2">
<strong><i class="fas fa-tag mr-2"></i>Status:</strong>
<?php
$statusBadgeClass = 'badge-success';
if ($courseData['enrollment_status'] === 'pending') {
$statusBadgeClass = 'badge-warning';
} else if ($courseData['enrollment_status'] === 'completed') {
$statusBadgeClass = 'badge-primary';
} else if ($courseData['enrollment_status'] === 'suspended') {
$statusBadgeClass = 'badge-danger';
}
?>
<span class="badge badge-pill ml-2 <?php echo $statusBadgeClass; ?>">
<?php echo ucfirst($courseData['enrollment_status']); ?>
</span>
</div>
</div>
</div>
</div>
<!-- Payment Information Card -->
<div class="col-xl-4 col-md-6 mb-4">
<div class="card border-left-success shadow h-100">
<div class="card-header py-3 d-flex flex-row align-items-center justify-content-between">
<h6 class="m-0 font-weight-bold text-success">Payment Information</h6>
<?php
$paymentBadgeClass = 'badge-warning';
if ($paymentInfo['is_paid_in_full']) {
$paymentBadgeClass = 'badge-success';
} else if ($paymentInfo['payment_progress'] >= 50) {
$paymentBadgeClass = 'badge-info';
}
?>
<div class="badge badge-pill <?php echo $paymentBadgeClass; ?>">
<?php echo $paymentInfo['payment_status']; ?>
</div>
</div>
<div class="card-body">
<div class="mb-3">
<label class="font-weight-bold text-dark">Payment Progress</label>
<div class="progress mb-2" style="height: 15px;">
<?php
$progressBarClass = 'bg-danger';
if ($paymentInfo['payment_progress'] >= 100) {
$progressBarClass = 'bg-success';
} else if ($paymentInfo['payment_progress'] >= 75) {
$progressBarClass = 'bg-info';
} else if ($paymentInfo['payment_progress'] >= 50) {
$progressBarClass = 'bg-primary';
} else if ($paymentInfo['payment_progress'] >= 25) {
$progressBarClass = 'bg-warning';
}
?>
<div class="progress-bar progress-bar-striped <?php echo $progressBarClass; ?>"
role="progressbar"
style="width: <?php echo $paymentInfo['payment_progress']; ?>%;"
aria-valuenow="<?php echo $paymentInfo['payment_progress']; ?>"
aria-valuemin="0"
aria-valuemax="100">
<?php echo $paymentInfo['payment_progress']; ?>%
</div>
</div>
</div>
<table class="table table-sm table-borderless">
<tr>
<td><strong>Payment Plan:</strong></td>
<td class="text-right"><?php echo $paymentInfo['payment_type']; ?></td>
</tr>
<tr>
<td><strong>Total Fee:</strong></td>
<td class="text-right">₱<?php echo number_format($paymentInfo['total_fee'], 2); ?></td>
</tr>
<tr>
<td><strong>Total Paid:</strong></td>
<td class="text-right">₱<?php echo number_format($paymentInfo['total_paid'], 2); ?></td>
</tr>
<tr>
<td><strong>Remaining:</strong></td>
<td class="text-right font-weight-bold">₱<?php echo number_format($paymentInfo['remaining_amount'], 2); ?></td>
</tr>
<tr>
<td><strong>Last Payment:</strong></td>
<td class="text-right"><?php echo $paymentInfo['last_payment_date'] ?: 'No payments yet'; ?></td>
</tr>
<?php if (!$paymentInfo['is_paid_in_full']): ?>
<tr id="next-payment-row">
<td><strong>Next Payment:</strong></td>
<td class="text-right">₱<?php echo number_format($paymentInfo['next_payment'], 2); ?></td>
</tr>
<?php endif; ?>
</table>
<div class="text-center mt-3">
<a href="payments.php?course_id=<?php echo $courseId; ?>" class="btn btn-success btn-sm">
<i class="fas fa-money-bill-wave mr-1"></i> Manage Payments
</a>
<?php if (!$paymentInfo['is_paid_in_full']): ?>
<a href="make_payment.php?course_id=<?php echo $courseId; ?>" class="btn btn-primary btn-sm ml-2">
<i class="fas fa-credit-card mr-1"></i> Make Payment
</a>
<?php endif; ?>
</div>
</div>
</div>
</div>
<!-- Course Content Card -->
<div class="col-xl-4 col-md-12 mb-4">
<div class="card border-left-info shadow h-100">
<div class="card-header py-3 d-flex flex-row align-items-center justify-content-between">
<h6 class="m-0 font-weight-bold text-info">Course Resources</h6>
</div>
<div class="card-body">
<div class="mb-4">
<h6 class="font-weight-bold">Course Description</h6>
<p class="text-gray-800">
<?php echo $courseData['description'] ?: 'No description available for this course.'; ?>
</p>
</div>
<div class="resource-links">
<h6 class="font-weight-bold">Quick Links</h6>
<div class="list-group">
<a href="course_content.php?id=<?php echo $courseId; ?>" class="list-group-item list-group-item-action">
<i class="fas fa-book mr-2"></i> Course Content
</a>
<a href="assignments.php?course_id=<?php echo $courseId; ?>" class="list-group-item list-group-item-action">
<i class="fas fa-tasks mr-2"></i> Assignments
</a>
<a href="attendance.php?course_id=<?php echo $courseId; ?>" class="list-group-item list-group-item-action">
<i class="fas fa-calendar-check mr-2"></i> Attendance
</a>
<a href="download_resources.php?course_id=<?php echo $courseId; ?>" class="list-group-item list-group-item-action">
<i class="fas fa-download mr-2"></i> Download Resources
</a>
</div>
</div>
</div>
</div>
</div>
</div>
<?php endif; ?>
</div>
<!-- /.container-fluid -->
</div>
<!-- End of Main Content -->
<?php require_once('includes/footer.php'); ?>
</div>
<!-- End of Content Wrapper -->
