<?php
require_once 'auth.php';
include 'db.php';
requireLogin($conn);

$role = $_SESSION['role'] ?? 'user';
$departments_list = getDepartmentList();
$folder_type_list = getFolderTypeList();

if (!currentUserCan($conn, 'folder', 'create')) {
    echo "<script>alert('Anda tidak mempunyai kebenaran untuk menambah fail.'); window.location='list_folder.php';</script>";
    exit();
}
?>
<!DOCTYPE html>
<html lang="ms">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Tambah Fail | MAINPP WORKSPACE</title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
        <?php renderAppShellAssets(); ?>
    <style>
        :root {
            --primary: #0077b6; --primary-dark: #005f99; --secondary: #00b4d8;
            --deep-blue: #023e5f;
            --superadmin: #6c5ce7; --superadmin-dark: #5b4cdb;
            --bg-light: rgba(245, 250, 253, 0.72); --bg-card: rgba(255, 255, 255, 0.68); --text-main: #163447;
            --text-muted: #2d5367; --border: rgba(255, 255, 255, 0.48); --sidebar-width: 280px;
            --success: #1a9955; --danger: #dc3545; --warning: #ffc107;
            --glass: rgba(255, 255, 255, 0.58);
            --glass-strong: rgba(255, 255, 255, 0.76);
            --shadow-soft: 0 24px 70px rgba(2, 62, 95, 0.16);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', 'Inter', Tahoma, Geneva, Verdana, sans-serif; }
        body {
            background:
                linear-gradient(135deg, rgba(245, 250, 253, 0.90), rgba(222, 246, 252, 0.76)),
                url('assets/auth-bg.png') center/cover no-repeat fixed;
            min-height: 100vh;
            display: flex;
            color: var(--text-main);
            overflow-x: hidden;
        }

        body::before,
        body::after {
            content: "";
            position: fixed;
            pointer-events: none;
            z-index: 0;
        }

        body::before {
            width: 42vw;
            height: 42vw;
            right: -16vw;
            top: -18vw;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 180, 216, 0.24), transparent 62%);
            filter: blur(4px);
        }

        body::after {
            width: 48vw;
            height: 48vw;
            left: 120px;
            bottom: -30vw;
            border-radius: 46px;
            background:
                linear-gradient(155deg, rgba(255, 255, 255, 0.20), rgba(255, 255, 255, 0.03)),
                repeating-linear-gradient(0deg, transparent 0 34px, rgba(0, 119, 182, 0.08) 35px 36px);
            border: 1px solid rgba(255, 255, 255, 0.32);
            transform: rotate(-9deg);
        }

        .sidebar {
            width: var(--sidebar-width);
            background:
                linear-gradient(180deg, rgba(2, 62, 95, 0.94), rgba(0, 119, 182, 0.84)),
                radial-gradient(circle at 22% 8%, rgba(0, 180, 216, 0.28), transparent 32%);
            border-right: 1px solid rgba(255, 255, 255, 0.22);
            position: fixed;
            height: 100vh;
            padding: 20px 0;
            overflow-y: auto;
            overflow-x: hidden;
            z-index: 1000;
            box-shadow: 18px 0 44px rgba(2, 38, 60, 0.20);
            transition: width 0.3s ease;
            display:flex;
            flex-direction:column;
            backdrop-filter: blur(18px) saturate(1.25);
            -webkit-backdrop-filter: blur(18px) saturate(1.25);
        }
        .sidebar.collapsed { width: 70px; }
        .sidebar-header { text-align: center; padding: 0 20px 20px; border-bottom: 1px solid rgba(255, 255, 255, 0.16); margin-bottom: 20px; white-space: nowrap; overflow: hidden; background: transparent !important; }
        .sidebar.collapsed .sidebar-header h3, .sidebar.collapsed .sidebar-header p, .sidebar.collapsed .menu-text { display: none; }
        .sidebar-header img { width: 54px; margin-bottom: 10px; transition: margin 0.3s ease; filter: drop-shadow(0 10px 18px rgba(0,0,0,0.25)); }
        .sidebar.collapsed .sidebar-header img { margin: 0 auto 10px; }
        .sidebar-header h3 { font-size: 1rem; font-weight: 800; color: #fff; margin-bottom: 4px; letter-spacing: 0.01em; }
        .sidebar-header p { font-size: 0.75rem; color: rgba(255,255,255,0.72); }
        .role-badge { display: inline-block; padding: 3px 10px; border-radius: 12px; font-size: 0.7rem; font-weight: 600; margin-left: 8px; }
        .role-badge.user { background: #e6f4ff; color: var(--primary); }
        .role-badge.admin { background: #d4edda; color: var(--success); }
        .role-badge.superadmin { background: linear-gradient(90deg, var(--superadmin), var(--superadmin-dark)); color: #fff; }
        .sidebar-menu { list-style: none; padding: 0 10px; display:flex; flex-direction:column; flex:1; }
        .sidebar-section { padding: 10px 18px 6px; color: rgba(255,255,255,0.58); font-size: 0.72rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.06em; }
        .sidebar-spacer { margin-top: auto; }
        .sidebar-menu li a { display: flex; align-items: center; gap: 12px; padding: 12px 18px; color: rgba(255,255,255,0.88); text-decoration: none; border-radius: 10px; margin-bottom: 5px; transition: all 0.2s ease; font-size: 0.9rem; white-space: nowrap; }
        .sidebar-menu li a:hover, .sidebar-menu li a.active { background: rgba(255,255,255,0.18); color: #fff; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.18); }
        .sidebar-menu li a i { width: 20px; text-align: center; font-size: 1.1rem; }
        .sidebar-menu .dropdown { position: relative; }
        .sidebar-menu .dropdown-toggle { display: flex; align-items: center; justify-content: space-between; width: 100%; padding: 12px 18px; color: rgba(255,255,255,0.88); background: none; border: none; border-radius: 10px; cursor: pointer; font-size: 0.9rem; text-align: left; transition: all 0.2s ease; }
        .sidebar-menu .dropdown-toggle:hover, .sidebar-menu .dropdown-toggle.active { background: rgba(255,255,255,0.18); color: #fff; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.18); }
        .sidebar-menu .dropdown-toggle i.chevron { transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1); font-size: 0.8rem; }
        .sidebar-menu .dropdown.active .dropdown-toggle i.chevron { transform: rotate(180deg); }
        .sidebar-menu .dropdown-menu { display: flex; flex-direction: column; padding-left: 42px; margin-top: 4px; max-height: 0; opacity: 0; overflow: hidden; transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease; }
        .sidebar-menu .dropdown.active .dropdown-menu { max-height: 260px; opacity: 1; }
        .sidebar-menu .dropdown-menu a { padding: 8px 18px; color: rgba(255,255,255,0.78); text-decoration: none; border-radius: 8px; font-size: 0.85rem; display: flex; align-items: center; gap: 8px; opacity: 0; transform: translateY(-5px); transition: opacity 0.2s ease, transform 0.2s ease; }
        .sidebar-menu .dropdown.active .dropdown-menu a { opacity: 1; transform: translateY(0); }
        .sidebar-menu .dropdown-menu a:hover, .sidebar-menu .dropdown-menu a.active { background: rgba(255,255,255,0.16); color: #fff; }
        .sidebar.collapsed + .main { margin-left: 70px; }
        .sidebar-toggle { position: absolute; right: 10px; top: 20px; width: 28px; height: 28px; background: rgba(255,255,255,0.20); color: #fff; border: 1px solid rgba(255,255,255,0.28); border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 0.7rem; box-shadow: 0 10px 22px rgba(0,0,0,0.14); transition: transform 0.3s ease; z-index: 1001; }
        .sidebar.collapsed .sidebar-toggle { transform: rotate(180deg); }
        .main { position: relative; z-index: 1; margin-left: var(--sidebar-width); flex: 1; padding: 28px 32px; transition: margin-left 0.3s ease; }
        .top-bar { background: var(--glass); padding: 18px 24px; border-radius: 18px; box-shadow: var(--shadow-soft); margin-bottom: 18px; display: flex; justify-content: space-between; align-items: center; border: 1px solid var(--border); backdrop-filter: blur(22px) saturate(1.25); -webkit-backdrop-filter: blur(22px) saturate(1.25); }
        .top-bar h2 { color: var(--primary-dark); font-size: 1.35rem; font-weight: 850; display: flex; align-items: center; gap: 10px; }
        .top-bar h2 i { color: var(--secondary); }
        .user-info { display: flex; align-items: center; gap: 15px; font-size: 0.9rem; color: var(--text-muted); }
        .user-info span { color: var(--primary); font-weight: 600; }
        .user-info a { color: var(--danger); text-decoration: none; font-weight: 500; display: flex; align-items: center; gap: 5px; }
        .user-info a:hover { text-decoration: underline; }

        .form-card { background: var(--glass); border-radius: 22px; box-shadow: var(--shadow-soft); padding: 32px; border: 1px solid var(--border); max-width: 720px; margin: 0 auto; backdrop-filter: blur(24px) saturate(1.25); -webkit-backdrop-filter: blur(24px) saturate(1.25); }
        .form-header { text-align: center; margin-bottom: 28px; }
        .form-header img { width: 74px; margin-bottom: 12px; filter: drop-shadow(0 12px 18px rgba(2,62,95,0.18)); }
        .form-header h1 { font-size: 1.45rem; color: var(--primary-dark); margin-bottom: 6px; font-weight: 850; letter-spacing: 0; }
        .form-header p { color: var(--text-muted); font-size: 0.9rem; font-weight: 650; }
        
        .form-group { margin-bottom: 18px; }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
        }
        .form-row .form-group {
            margin-bottom: 24px;
        }
        
        .form-group label { display: block; margin-bottom: 7px; color: var(--text-main); font-weight: 750; font-size: 0.9rem; }
        .required { color: var(--danger); }
        .form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px 14px; border: 1px solid rgba(0,119,182,0.18); border-radius: 12px; font-size: 0.95rem; background: rgba(255,255,255,0.78); color: var(--text-main); box-sizing: border-box; box-shadow: inset 0 1px 0 rgba(255,255,255,0.52); }
        .form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 4px rgba(0,119,182,0.13); background: #fff; }
        .hint { font-size: 0.78rem; color: var(--text-muted); margin-top: 6px; line-height: 1.45; font-weight: 600; }
        .btn { padding: 12px 22px; border: none; border-radius: 999px; cursor: pointer; font-size: 0.95rem; font-weight: 850; display: inline-flex; align-items: center; gap: 7px; transition: transform 0.2s ease, filter 0.2s ease, box-shadow 0.2s ease; }
        .btn-primary { 
            background: linear-gradient(90deg, var(--primary), var(--secondary)); 
            color: #fff; 
            width: 100%; 
            margin: 10px auto 0; 
            display: flex; 
            justify-content: center;
            padding: 12px 40px; 
        }
        .btn:hover { transform: translateY(-1px); filter: brightness(1.04); box-shadow: 0 14px 28px rgba(0,119,182,0.22); }
        .page-footer { text-align: center; padding: 20px; color: var(--text-muted); font-size: 0.8rem; margin-top: 30px; }

        @media (max-width: 992px) {
            .sidebar { width: 70px; }
            .sidebar .sidebar-header h3, .sidebar .sidebar-header p, .sidebar .menu-text, .sidebar .role-badge, .sidebar .dropdown-menu, .sidebar .sidebar-section { display: none; }
            .main { margin-left: 70px; }
            .sidebar-toggle { display: none; }
        }
        @media (max-width: 768px) {
            .form-row {
                grid-template-columns: 1fr;
            }
            .form-row .form-group {
                margin-bottom: 18px;
            }
        }
        .sidebar {
            overflow: hidden;
        }
        .sidebar-header {
            flex: 0 0 auto;
        }
        .sidebar-menu {
            flex: 1 1 auto;
            min-height: 0;
            overflow-y: auto;
            overflow-x: hidden;
            padding-bottom: 0;
            overscroll-behavior: contain;
            scrollbar-width: thin;
            scrollbar-color: #8f8f8f transparent;
        }
        .sidebar-menu::-webkit-scrollbar {
            width: 10px;
        }
        .sidebar-menu::-webkit-scrollbar-track {
            background: transparent;
        }
        .sidebar-menu::-webkit-scrollbar-thumb {
            background: #8f8f8f;
            border-radius: 999px;
            border: 2px solid transparent;
            background-clip: content-box;
        }
        .sidebar-menu::-webkit-scrollbar-button {
            display: none;
            width: 0;
            height: 0;
        }
    
        /* Button hover animation */
        .main .btn,
        .main .tab-btn,
        .main .action-btn,
        .main .btn-action,
        .main .filter-btn,
        .main .button,
        .main .generate-closing-btn,
        .main .attachment-remove-btn,
        .main .page-add-btn,
        .main .page-delete-btn,
        .main .delete-current-page-btn,
        .main .form-actions a,
        .main .form-actions button,
        .main .filter-actions a,
        .main .filter-actions button,
        .main .document-command a,
        .main .document-command button,
        .main table a[class*="btn"],
        .main table button[class*="btn"],
        .main input[type="submit"],
        .main input[type="button"] {
            transition: transform 0.2s ease, filter 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease !important;
            will-change: transform;
        }

        .main .btn:hover:not(:disabled),
        .main .tab-btn:hover:not(:disabled),
        .main .action-btn:hover:not(:disabled),
        .main .btn-action:hover:not(:disabled),
        .main .filter-btn:hover:not(:disabled),
        .main .button:hover:not(:disabled),
        .main .generate-closing-btn:hover:not(:disabled),
        .main .attachment-remove-btn:hover:not(:disabled),
        .main .page-add-btn:hover:not(:disabled),
        .main .page-delete-btn:hover:not(:disabled),
        .main .delete-current-page-btn:hover:not(:disabled),
        .main .form-actions a:hover,
        .main .form-actions button:hover:not(:disabled),
        .main .filter-actions a:hover,
        .main .filter-actions button:hover:not(:disabled),
        .main .document-command a:hover,
        .main .document-command button:hover:not(:disabled),
        .main table a[class*="btn"]:hover,
        .main table button[class*="btn"]:hover:not(:disabled),
        .main input[type="submit"]:hover:not(:disabled),
        .main input[type="button"]:hover:not(:disabled) {
            transform: translateY(-1px);
            filter: brightness(1.04);
            box-shadow: 0 14px 28px rgba(0, 119, 182, 0.18);
        }

        .main .btn:active:not(:disabled),
        .main .tab-btn:active:not(:disabled),
        .main .action-btn:active:not(:disabled),
        .main .btn-action:active:not(:disabled),
        .main .filter-btn:active:not(:disabled),
        .main .button:active:not(:disabled),
        .main .generate-closing-btn:active:not(:disabled),
        .main .attachment-remove-btn:active:not(:disabled),
        .main .page-add-btn:active:not(:disabled),
        .main .page-delete-btn:active:not(:disabled),
        .main .delete-current-page-btn:active:not(:disabled),
        .main .form-actions a:active,
        .main .form-actions button:active:not(:disabled),
        .main .filter-actions a:active,
        .main .filter-actions button:active:not(:disabled),
        .main .document-command a:active,
        .main .document-command button:active:not(:disabled),
        .main table a[class*="btn"]:active,
        .main table button[class*="btn"]:active:not(:disabled),
        .main input[type="submit"]:active:not(:disabled),
        .main input[type="button"]:active:not(:disabled) {
            transform: translateY(0);
            filter: brightness(0.98);
        }</style>
</head>
<body class="role-<?= htmlspecialchars($role) ?>">

<aside class="sidebar" id="sidebar">
    <button class="sidebar-toggle" id="sidebarToggle" title="Tutup/Buka Menu">
        <i class="fas fa-chevron-left"></i>
    </button>
    <div class="sidebar-header">
        <img src="mainpp.png" alt="Logo MAINPP">
        <h3>MAINPP WORKSPACE</h3>
    </div>
        <ul class="sidebar-menu">
            <?php renderUnifiedSidebarMenu($conn, $role, 'add_folder.php'); ?>
        </ul>
</aside>

<main class="main">
    <div class="top-bar">
        <h2><i class="fas fa-folder-plus"></i> Tambah Fail</h2>
        <?php renderTopBarUserMenu($conn, $role, 'add_folder.php'); ?>
    </div>

    <?php
    renderBreadcrumb([
        ['label' => 'Dashboard', 'url' => 'dashboard.php'],
        ['label' => 'Senarai Fail', 'url' => 'list_folder.php'],
        ['label' => 'Tambah Fail', 'url' => 'add_folder.php', 'current' => true]
    ]);
    ?>

    <div class="form-card">
        <div class="form-header">
            <img src="mainpp.png" alt="Logo MAINPP">
            <h1>TAMBAH FAIL BARU</h1>
        </div>

        <form action="process_folder.php?action=add" method="POST">
            <div class="form-row">
                <div class="form-group">
                    <label>Bahagian / Unit <span class="required">*</span></label>
                    <select name="department" required>
                        <option value="">-- Sila Pilih Bahagian --</option>
                        <?php foreach ($departments_list as $dept): ?>
                            <option value="<?= htmlspecialchars($dept) ?>" <?= (($_POST['department'] ?? '') === $dept) ? 'selected' : '' ?>>
                                <?= htmlspecialchars($dept) ?>
                            </option>
                        <?php endforeach; ?>
                    </select>
                </div>

                <div class="form-group">
                    <label>Jenis Fail <span class="required">*</span></label>
                    <select name="folder_type" id="folderType" required>
                        <option value="">-- Sila Pilih Jenis Fail --</option>
                        <?php foreach ($folder_type_list as $folder_type): ?>
                            <option value="<?= htmlspecialchars($folder_type) ?>" <?= (($_POST['folder_type'] ?? '') === $folder_type) ? 'selected' : '' ?>>
                                <?= htmlspecialchars(getFolderTypeLabel($folder_type)) ?>
                            </option>
                        <?php endforeach; ?>
                    </select>
                </div>
            </div>

            <div class="form-row" id="officeReferenceFields">
                <div class="form-group" id="folderCodeGroup">
                    <label>Kod Fail <span class="required">*</span></label>
                    <input type="text" name="folder_code" id="folderCode" value="<?= htmlspecialchars($_POST['folder_code'] ?? '') ?>" required>
                    <div class="hint" id="folderCodeHint">Untuk fail office, masukkan kod penuh seperti yang ingin disimpan. Contoh: MAINPP/BTM/100-19/1/1 atau MAINPP/BTM/100-19/1/1 Jld.4</div>
                </div>

                <div class="form-group" id="fileNumberStartGroup">
                    <label>No. Rujukan Mula <span class="required">*</span></label>
                    <input type="number" name="file_number_start" id="fileNumberStart" min="1" step="1" value="<?= htmlspecialchars($_POST['file_number_start'] ?? '1') ?>" required>
                </div>
            </div>

            <div class="form-group">
                <label>Nama Fail <span class="required">*</span></label>
                <div id="folderNameContainer">
                    <input type="text" name="folder_name" id="folderNameInput" value="<?= htmlspecialchars($_POST['folder_name'] ?? '') ?>" required>
                </div>
                <div class="hint" id="folderNameHint"></div>
            </div>

            <?php
            echo renderCustomFields($conn, 'folder');
            ?>

            <button type="submit" class="btn btn-primary">
                TAMBAH FAIL
            </button>
        </form>
    </div>

    <div class="page-footer">
        Hakcipta Terpelihara &copy; <?= date('Y') ?> Majlis Agama Islam Negeri Pulau Pinang.
    </div>
</main>

<script>
    const sidebar = document.getElementById('sidebar');
    const toggleBtn = document.getElementById('sidebarToggle');
    if (toggleBtn) {
        toggleBtn.addEventListener('click', () => sidebar.classList.toggle('collapsed'));
    }
    if (window.innerWidth < 992) sidebar.classList.add('collapsed');

    document.querySelectorAll('.sidebar-menu .dropdown-toggle, .dropdown-toggle').forEach(btn => {
        btn.addEventListener('click', function(e) {
            e.preventDefault();
            const dropdown = this.parentElement;
            const isActive = dropdown.classList.contains('active');
            document.querySelectorAll('.sidebar-menu .dropdown, .dropdown').forEach(item => {
                if (item !== dropdown) item.classList.remove('active');
            });
            dropdown.classList.toggle('active', !isActive);
        });
    });
    
    function confirmLogout() {
        return confirm("Adakah anda pasti ingin log keluar?");
    }

    const folderTypeSelect = document.getElementById('folderType');
    const folderCodeInput = document.getElementById('folderCode');
    const folderCodeHint = document.getElementById('folderCodeHint');
    const officeReferenceFields = document.getElementById('officeReferenceFields');
    const fileNumberStartInput = document.getElementById('fileNumberStart');
    const folderNameContainer = document.getElementById('folderNameContainer');
    const folderNameHint = document.getElementById('folderNameHint');
    const officeFolderPattern = /^MAINPP\/[A-Z]{2,10}[/.]\d{3}-\d{1,2}\/\d+\/\d+(\s+JLD\.\d+)?$/i;
    let jilidCheckTimeout = null;
    let typedFolderNameValue = '';

    function escapeHtml(text) {
        if (!text) return '';
        return String(text)
            .replace(/&/g, '&amp;')
            .replace(/</g, '&lt;')
            .replace(/>/g, '&gt;')
            .replace(/"/g, '&quot;')
            .replace(/'/g, '&#039;');
    }

    function toggleOfficeReferenceFields() {
        if (!folderTypeSelect || !officeReferenceFields || !folderCodeInput || !fileNumberStartInput) return;

        const isPersonalFolder = folderTypeSelect.value === 'sendirian';
        officeReferenceFields.style.display = isPersonalFolder ? 'none' : '';
        folderCodeInput.required = !isPersonalFolder;
        fileNumberStartInput.required = !isPersonalFolder;

        if (isPersonalFolder) {
            folderCodeInput.removeAttribute('pattern');
            folderCodeInput.setCustomValidity('');
        }
    }

    function updateFolderNameField(hasOfficialName, officialName) {
        if (!folderNameContainer) return;

        if (hasOfficialName && officialName) {
            const currentInput = document.getElementById('folderNameInput');
            if (currentInput) {
                typedFolderNameValue = currentInput.value;
            }
            folderNameContainer.innerHTML = '<select name="folder_name" id="folderNameSelect" required>' +
                '<option value="' + escapeHtml(officialName) + '" selected>' + escapeHtml(officialName) + '</option>' +
                '</select>';
            if (folderNameHint) {
                folderNameHint.innerHTML = '<span style="color:#0077b6;font-weight:700;"><i class="fas fa-lock"></i> Nama fail rasmi bagi Kod Fail ini: ' + escapeHtml(officialName) + '</span>';
            }
        } else {
            const currentSelect = document.getElementById('folderNameSelect');
            if (currentSelect || !document.getElementById('folderNameInput')) {
                folderNameContainer.innerHTML = '<input type="text" name="folder_name" id="folderNameInput" value="' + escapeHtml(typedFolderNameValue) + '" placeholder="Masukkan Nama Fail Rasmi" required>';
            }
            if (folderNameHint) {
                folderNameHint.innerHTML = '';
            }
        }
    }

    function updateFolderCodeHint(customHtml) {
        if (!folderTypeSelect || !folderCodeHint || !folderCodeInput) return;

        if (customHtml) {
            folderCodeHint.innerHTML = customHtml;
            return;
        }

        if (folderTypeSelect.value === 'sendirian') {
            folderCodeHint.textContent = 'Fail personal membenarkan format fail yang bebas.';
            folderCodeInput.removeAttribute('pattern');
            folderCodeInput.setCustomValidity('');
            updateFolderNameField(false, '');
            return;
        }

        if (folderTypeSelect.value === 'office') {
            folderCodeHint.textContent = 'Masukkan kod penuh fail office seperti MAINPP/BTM/500-6/2/1 atau MAINPP/BTM/500-6/2/1 Jld.4';
            folderCodeInput.setAttribute('pattern', 'MAINPP\\/[A-Za-z]{2,10}[\\/.]\\d{3}-\\d{1,2}\\/\\d+\\/\\d+(\\s+Jld\\.\\d+)?');
            return;
        }

        folderCodeHint.innerHTML = '• Fail Office, format fail rasmi.<br>• Fail Personal, format fail adalah bebas.';
        folderCodeInput.removeAttribute('pattern');
        folderCodeInput.setCustomValidity('');
        updateFolderNameField(false, '');
    }

    function validateFolderCodeFormat() {
        if (!folderTypeSelect || !folderCodeInput) return;

        if (folderTypeSelect.value === 'office' && folderCodeInput.value.trim() !== '' && !officeFolderPattern.test(folderCodeInput.value.trim())) {
            folderCodeInput.setCustomValidity('Kod asas fail office mesti ikut format rasmi seperti MAINPP/BTM.500-6/2/1.');
            return false;
        }

        folderCodeInput.setCustomValidity('');
        return true;
    }

    function checkJilidCodeAuto() {
        if (!folderTypeSelect || !folderCodeInput) return;

        if (folderTypeSelect.value !== 'office') {
            updateFolderCodeHint();
            return;
        }

        const rawCode = folderCodeInput.value.trim();
        if (rawCode === '' || !officeFolderPattern.test(rawCode)) {
            validateFolderCodeFormat();
            updateFolderNameField(false, '');
            return;
        }

        fetch('get_next_jilid.php?code=' + encodeURIComponent(rawCode))
            .then(res => res.json())
            .then(data => {
                if (data.status === 'active') {
                    folderCodeInput.setCustomValidity(data.message);
                    updateFolderCodeHint('<span style="color:#dc3545;font-weight:700;"><i class="fas fa-exclamation-triangle"></i> ' + data.message + '</span>');
                } else if (data.status === 'suggested' && data.suggested_code) {
                    folderCodeInput.setCustomValidity('');
                    if (folderCodeInput.value.trim().toUpperCase() !== data.suggested_code.toUpperCase()) {
                        folderCodeInput.value = data.suggested_code;
                    }
                    updateFolderCodeHint('<span style="color:#1a9955;font-weight:700;"><i class="fas fa-magic"></i> ' + data.message + '</span>');
                } else if (data.status === 'new') {
                    folderCodeInput.setCustomValidity('');
                    updateFolderCodeHint('Masukkan kod penuh fail office seperti MAINPP/BTM/500-6/2/1 atau MAINPP/BTM/500-6/2/1 Jld.4');
                }

                if (data.has_official_name && data.official_name) {
                    updateFolderNameField(true, data.official_name);
                } else {
                    updateFolderNameField(false, '');
                }
            })
            .catch(err => {
                console.error('Ralat menyemak Jilid fail:', err);
            });
    }

    toggleOfficeReferenceFields();
    updateFolderCodeHint();
    if (folderTypeSelect) {
        folderTypeSelect.addEventListener('change', function() {
            toggleOfficeReferenceFields();
            updateFolderCodeHint();
            if (validateFolderCodeFormat()) {
                checkJilidCodeAuto();
            }
        });
    }
    if (folderCodeInput) {
        folderCodeInput.addEventListener('input', function() {
            validateFolderCodeFormat();
            clearTimeout(jilidCheckTimeout);
            jilidCheckTimeout = setTimeout(checkJilidCodeAuto, 600);
        });
        folderCodeInput.addEventListener('blur', function() {
            if (validateFolderCodeFormat()) {
                checkJilidCodeAuto();
            }
        });
    }
</script>
<?php renderSessionTimeoutScript(); ?>
</body>
</html>
