school-management-system/admin_upload_resources.php at main · errorcodegh/school-management-system · GitHub

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<?php
session_start();
require "config.php";

if (!isset($_SESSION['id']) || $_SESSION['role'] !== 'admin') {
    header("Location: index.php");
    exit;
}

$levels = $pdo->query("SELECT id, level_name FROM levels")->fetchAll();
$resources = $pdo->query("
    SELECT r.*, l.level_name, c.title AS course_title, cs.subject_title
    FROM resources r
    JOIN levels l ON r.level_id = l.id
    JOIN courses c ON r.course_id = c.id
    JOIN course_subjects cs ON r.subject_id = cs.id
    ORDER BY r.uploaded_at DESC
")->fetchAll();


?>
<!DOCTYPE html>
<html>
<head>
    <title>Upload Course Resources</title>
    <link rel="stylesheet" href="resources.css">
    <style>
        .success-message {
            padding: 10px;
            background-color: #d4edda;
            border: 1px solid #c3e6cb;
            color: #155724;
            border-radius: 5px;
            margin-bottom: 15px;
        }
        table { width: 100%; border-collapse: collapse; margin-top: 20px; }
        th, td { border: 1px solid #ccc; padding: 10px; text-align: left; }
        th { background-color: #f2f2f2; }
        a { color: #007bff; text-decoration: none; }
        a:hover { text-decoration: underline; }

        .close-btn {
    background: #2563eb;
    color: #fff;
    padding: 10px 14px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
}

    </style>
</head>
<body>
<div class="page-wrapper">
    <span class="close-btn" title="Close" onclick="window.location='student_dashboard.php'">&times;</span>

    <h2 class="page-title">📚 Course Learning Resources</h2>

    <!-- SUCCESS / ERROR MESSAGES -->
    <?php if (isset($_GET['success'])): ?>
        <p class="success-message">✅ Resource uploaded successfully!</p>
    <?php elseif (isset($_GET['error'])): ?>
        <p class="success-message" style="background-color:#f8d7da;color:#721c24;border-color:#f5c6cb;">❌ Failed to upload resource.</p>
    <?php endif; ?>

    <div class="card">
        <form action="admin_upload_resources_action.php" method="POST" enctype="multipart/form-data">
            <!-- LEVEL -->
            <div class="form-group">
                <label>Level</label>
                <select name="level_id" id="level" required>
                    <option value="">Select Level</option>
                    <?php foreach ($levels as $l): ?>
                        <option value="<?= $l['id'] ?>">
                            <?= htmlspecialchars($l['level_name']) ?>
                        </option>
                    <?php endforeach; ?>
                </select>
            </div>

            <!-- COURSE -->
            <div class="form-group">
                <label>Course</label>
                <select name="course_id" id="course" required disabled>
                    <option value="">Select Level first</option>
                </select>
            </div>

            <!-- SUBJECT -->
            <div class="form-group">
                <label>Subject</label>
                <select name="subject_id" id="subject" required disabled>
                    <option value="">Select Course first</option>
                </select>
            </div>

            <!-- FILE -->
            <div class="form-group">
                <label>Upload File</label>
                <input type="file" name="resource" required>
            </div>

            <button class="btn-primary">Upload Resource</button>
        </form>
    </div>

    <!-- HISTORY OF UPLOADED FILES -->
    <h3>📄 Uploaded Resources History</h3>
    <?php if (empty($resources)): ?>
        <p>No resources uploaded yet.</p>
    <?php else: ?>
        <table>
            <thead>
                <tr>
                    <th>Level</th>
                    <th>Course</th>
                    <th>Subject</th>
                    <th>File Name</th>
                    <th>Uploaded At</th>
                    <th>Action</th>
                </tr>
            </thead>
            <tbody>
            <?php foreach ($resources as $r): ?>
                <tr>
                    <td><?= htmlspecialchars($r['level_name']) ?></td>
                    <td><?= htmlspecialchars($r['course_title']) ?></td>
                    <td><?= htmlspecialchars($r['subject_title']) ?></td>
                    <td><?= htmlspecialchars($r['filename']) ?></td>
                    <td><?= htmlspecialchars($r['uploaded_at']) ?></td>
                    <td><a href="<?= htmlspecialchars($r['filepath']) ?>" download>Download</a></td>
                </tr>
            <?php endforeach; ?>
            </tbody>
        </table>
    <?php endif; ?>
</div>

<script>
// JS for dynamic courses & subjects (your existing code)
const levelSelect   = document.getElementById("level");
const courseSelect  = document.getElementById("course");
const subjectSelect = document.getElementById("subject");

levelSelect.addEventListener("change", () => {
    const levelId = levelSelect.value;
    courseSelect.innerHTML = "<option>Loading courses...</option>"; courseSelect.disabled = true;
    subjectSelect.innerHTML = "<option>Select Course first</option>"; subjectSelect.disabled = true;
    if (!levelId) { courseSelect.innerHTML = "<option>Select Level first</option>"; return; }

    fetch(`fetch_courses.php?level_id=${levelId}`).then(res => res.json())
        .then(data => {
            courseSelect.innerHTML = "";
            if (data.length === 0) { courseSelect.innerHTML = "<option>No courses found</option>"; return; }
            courseSelect.disabled = false;
            courseSelect.innerHTML = "<option value=''>Select Course</option>";
            data.forEach(course => { courseSelect.innerHTML += `<option value="${course.id}">${course.title}</option>`; });
        }).catch(err => { console.error(err); courseSelect.innerHTML = "<option>Error loading courses</option>"; });
});

courseSelect.addEventListener("change", () => {
    const courseId = courseSelect.value;
    subjectSelect.innerHTML = "<option>Loading subjects...</option>"; subjectSelect.disabled = true;
    if (!courseId) { subjectSelect.innerHTML = "<option>Select Course first</option>"; return; }

    fetch(`fetch_subjects.php?course_id=${courseId}`).then(res => res.json())
        .then(data => {
            subjectSelect.innerHTML = "";
            if (data.length === 0) { subjectSelect.innerHTML = "<option>No subjects found</option>"; return; }
            subjectSelect.disabled = false;
            subjectSelect.innerHTML = "<option value=''>Select Subject</option>";
            data.forEach(sub => { subjectSelect.innerHTML += `<option value="${sub.id}">${sub.subject_title}</option>`; });
        }).catch(err => { console.error(err); subjectSelect.innerHTML = "<option>Error loading subjects</option>"; });
});
</script>

</body>
</html>