@extends('layout.main')
<style>
    /* Baris Folder */
    .tree-folder {
        background-color: #fcfcfc;
        cursor: pointer;
        transition: background 0.2s;
    }
    .tree-folder:hover {
        background-color: #f4f7fb;
    }

    /* Container Indentasi */
    .indent-container {
        display: inline-flex;
        align-items: center;
    }

    /* Garis Pandu Vertikal */
    .tree-line {
        display: inline-block;
        width: 24px;
        height: 40px; /* Sesuaikan dengan tinggi row */
        border-left: 1px solid #e0e0e0;
        margin-left: 12px;
        position: relative;
    }

    /* Menghilangkan garis terakhir agar lebih rapi */
    .tree-file:last-child .tree-line {
        height: 20px;
    }

    /* Ikon dan Teks */
    .folder-icon { color: #ffc107; font-size: 1.2rem; }
    .file-icon { color: #6c757d; font-size: 1.1rem; }

    .badge-pdf { background-color: #fff0f0; color: #e44d26; border: 1px solid #ffcccc; }

    /* Aksi Folder (lebih user-friendly) */
    .folder-actions {
        display: inline-flex;
        gap: 6px;
        margin-left: 8px;
        opacity: 0;
        transform: translateY(-1px);
        transition: opacity 0.15s ease, transform 0.15s ease;
    }
    .tree-folder:hover .folder-actions {
        opacity: 1;
        transform: translateY(0);
    }
    .btn-folder-action {
        padding: 1px 2px;
        font-size: 11px;
        line-height: 1.2;
        border-radius: 999px;
    }
</style>
@section('body_main')
  <div class="row">
        <div class="col-md-12">
            <div class="card">
                <div class="card-body p-3">
                    <div class="tab-content">
                        <div class="tab-pane fade show active">
                            <div class="d-flex justify-content-between align-items-start mb-3">
                                <h4 class="mb-0">Dokumen Akreditasi</h4>
                                <div class="d-flex align-items-start gap-3">
                                    <div class="d-flex flex-column align-items-start">
                                        <button
                                            type="button"
                                            class="btn btn-primary btn-sm"
                                            id="btnDownloadMultiple"
                                            disabled
                                        >
                                            <i class="ti ti-download me-1"></i>
                                            Download Terpilih
                                        </button>

                                        <span
                                            id="selectedCount"
                                            class="small text-muted mt-1"
                                        >
                                            0 dipilih
                                        </span>
                                    </div>
                                    @if(Auth::guard('admin')->check())
                                    <button
                                        type="button"
                                        class="btn btn-outline-primary btn-sm"
                                        data-bs-toggle="modal"
                                        data-bs-target="#modalAkreInstrumen"
                                    >
                                        <i class="ti ti-folder-plus me-1"></i>
                                        Tambah Folder Akreditasi
                                    </button>
                                    @endif
                                    <!-- Tambah Dokumen -->
                                     @if(!Auth::guard('admin')->check())
                                    <button
                                        type="button"
                                        class="btn btn-success btn-sm"
                                        data-bs-toggle="modal"
                                        data-bs-target="#modalCreateFile"
                                    >
                                        <i class="ti ti-plus me-1"></i>
                                        Tambah Dokumen
                                    </button>
                                    @endif
                                </div>
                            </div>
                            <div class="d-flex flex-column flex-md-row align-items-md-center gap-2 mb-3">
                                <div class="d-flex flex-column flex-md-row align-items-md-center gap-2 flex-grow-1">
                                    <input type="search" id="tableSearch" class="form-control"
                                        placeholder="Cari Dokumen / Folder" autocomplete="off">
                                </div>
                                <div class="d-flex align-items-center gap-2">

                                </div>
                            </div>
                            <div class="table-responsive" style="max-height: 70vh; overflow-y:auto;">
                            <table class="table table-sm table-hover align-middle mb-0 table-fixed" id="lastUpdatedTable">
                                <thead>
                                    <tr>
                                        <th class="text-center" style="width: 45px;">
                                            <input type="checkbox" id="checkAllRows" class="form-check-input">
                                        </th>
                                        <th style="width: 80px;">Aksi</th>
                                        <th style="width: 40%;">Nama Dokumen / Folder</th>
                                        <th>Tipe</th>
                                        <th>Unit</th>
                                        <th>Tgl Unggah</th>
                                    </tr>
                                </thead>
                                <tbody id="tableDataAkreditasi">
                                    <!-- data dari fetch masuk sini -->
                                </tbody>
                            </table>
                            </div>
                            <div class="d-flex flex-wrap align-items-center gap-2 mt-3">
                                <div class="d-flex align-items-center gap-1">
                                    <span class="small text-muted">Tampilkan</span>
                                    <select id="tablePageSize" class="form-select form-select-sm" style="width: 80px;">
                                        <option value="5">5</option>
                                        <option value="10" selected>10</option>
                                        <option value="20">20</option>
                                        <option value="50">50</option>
                                        <option value="100">100</option>
                                    </select>
                                    <span class="small text-muted">data</span>
                                </div>

                                <div id="paginationControls" class="ms-auto"></div>

                                <div class="small text-muted text-nowrap" id="tableSummary">
                                    Memuat data...
                                </div>
                            </div>

                        </div>
                    </div>
                </div>

            </div>
        </div>
    </div>

    @include('dataUnit.modal.create')

    @if(Auth::guard('admin')->check())
    <div class="modal fade" id="modalAkreInstrumen" tabindex="-1" aria-hidden="true">
        <div class="modal-dialog modal-lg modal-dialog-centered">
            <div class="modal-content">
                <div class="modal-header">
                    <h1 class="modal-title fs-5">Tambah Folder/Instrumen Akreditasi</h1>
                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
                </div>
                <form id="formAkreInstrumen" autocomplete="off">
                    <div class="modal-body">
                        <div class="alert alert-info small mb-3">
                            Isi <strong>Type</strong> untuk membuat folder utama. Isi <strong>Segment</strong> untuk membuat sub-folder di dalam type.
                            Isi <strong>Item</strong> untuk membuat item di dalam segment.
                        </div>
                        <div class="row g-3">
                            <div class="col-12">
                                <label class="form-label fw-semibold">Type <span class="text-danger">*</span></label>
                                <input type="text" class="form-control" name="type" id="akreTypeInput" placeholder="Contoh: Tata Kelola Rumah Sakit (TKRS)" required>
                            </div>
                            <div class="col-md-6">
                                <label class="form-label fw-semibold">Segment</label>
                                <textarea class="form-control" name="segment" id="akreSegmentInput" rows="3" placeholder="Contoh: TKRS 7, TKRS 8, TKRS 9"></textarea>
                                <div class="form-text text-muted">Opsional. Bisa isi banyak (pisahkan dengan koma atau baris baru).</div>
                            </div>
                            <div class="col-md-6">
                                <label class="form-label fw-semibold">Item</label>
                                <textarea class="form-control" name="item" id="akreItemInput" rows="3" placeholder="Contoh: TKRS 7.a, TKRS 7.b, TKRS 7.c" disabled></textarea>
                                <div class="form-text text-muted">Aktif jika segment diisi. Bisa isi banyak (pisahkan dengan koma atau baris baru).</div>
                            </div>
                        </div>
                    </div>
                    <div class="modal-footer">
                        <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Tutup</button>
                        <button type="submit" class="btn btn-primary" id="btnSaveAkreInstrumen">Simpan</button>
                    </div>
                </form>
            </div>
        </div>
    </div>
    @endif

    <script>
  // === STATE MANAGEMENT ===
    let currentData = [];
    let selectedIds = [];
    let expandedFolders = new Set();
    let searchTimer;
    const isAdminUser = @json(Auth::guard('admin')->check());
    const btn = document.getElementById('btnDownloadMultiple');
    const tableState = { page: 1, pageSize: 10, lastPage: 1, total: 0, from: 0, to: 0, search: '' };
    const paginationEl = document.getElementById('paginationControls');
    // === INITIALIZATION ===
    document.addEventListener('DOMContentLoaded', () => {
        fetchData();
        initEventListeners();
        initTooltips();
    });

    function initTooltips() {
        try {
            if (!window.bootstrap?.Tooltip) return;
            document.querySelectorAll('[data-bs-toggle="tooltip"]').forEach(el => {
                const existing = bootstrap.Tooltip.getInstance(el);
                if (existing) existing.dispose();
                new bootstrap.Tooltip(el);
            });
        } catch (_) {}
    }

    // === EVENT LISTENERS ===
    function initEventListeners() {
        // Search dengan Debounce
        document.getElementById('tableSearch').addEventListener('input', (e) => {
            clearTimeout(searchTimer);
            searchTimer = setTimeout(() => {
                tableState.page = 1;
                fetchData(e.target.value, 1);
            }, 500);
        });

        // Per Page Change
        document.getElementById('tablePageSize').addEventListener('change', (e) => {
            const keyword = document.getElementById('tableSearch').value;
            tableState.page = 1;
            fetchData(keyword, 1);
        });

        // Check All Rows
        document.getElementById('checkAllRows').addEventListener('change', function() {
            const checkboxes = document.querySelectorAll('.row-checkbox');
            selectedIds = [];
            checkboxes.forEach(cb => {
                cb.checked = this.checked;
                if (this.checked) selectedIds.push(cb.value);
            });
            updateDownloadButton();
        });
    }

    // === CORE FUNCTIONS ===

    /**
     * Mengambil data dari server
     */
    function fetchData(keyword = '', page = 1) {
        const tbody = document.getElementById('tableDataAkreditasi');
        const perPage = parseInt(document.getElementById('tablePageSize').value, 10) || 10;

        tableState.search = keyword;
        tableState.pageSize = perPage;
        tableState.page = page;

        tbody.innerHTML = '<tr><td colspan="6" class="text-center">Memuat data...</td></tr>';

        fetch(`/datatable-akreditasi?keyword=${encodeURIComponent(keyword)}&per_page=${perPage}&page=${page}`)
            .then(res => res.json())
            .then(response => {
                if (response.status) {
                    currentData = response.data || [];
                    renderTable(keyword);
                    const pag = response.pagination || {};
                    tableState.total = pag.total || 0;
                    tableState.lastPage = pag.last_page || 1;
                    tableState.from = pag.from || 0;
                    tableState.to = pag.to || 0;
                    renderPagination(tableState.lastPage);
                    updateSummary();
                } else {
                    tbody.innerHTML = `<tr><td colspan="6" class="text-center text-danger">${response.message}</td></tr>`;
                }
            })
            .catch(err => {
                console.error('Error fetching data:', err);
                tbody.innerHTML = '<tr><td colspan="6" class="text-center text-danger">Gagal memuat data dari server.</td></tr>';
            });
    }

    /**
     * Merender tabel berdasarkan mode (Folder vs Search)
     */
    function renderTable(keyword = '') {
        const tbody = document.getElementById('tableDataAkreditasi');
        tbody.innerHTML = '';

        if (currentData.length === 0) {
            tbody.innerHTML = '<tr><td colspan="6" class="text-center">Tidak ada data ditemukan</td></tr>';
            return;
        }

        // MODE 1: SEARCH VIEW (Flat View - Langsung tampilkan semua file)
        if (keyword.length > 0) {
            currentData.forEach(item => renderFileRow(tbody, item));
            return;
        }

        // MODE 2: TREE VIEW (All folders & files)
        const tree = buildTree(currentData);
        if (expandedFolders.size === 0) {
            expandAllFolders(tree, '');
        }
        renderTree(tbody, tree, '', 0);
        initTooltips();
    }

    /**
     * Render Baris File (Digunakan di kedua mode)
     */
    function renderFileRow(targetTbody, item) {
        const fileName = item.file ? item.file.split('/').pop() : 'Unknown';
        const typeDok = fileName.split('.').pop().toUpperCase();
        const isChecked = selectedIds.includes(String(item.file_directory_id)) ? 'checked' : '';

        targetTbody.innerHTML += `
            <tr>
                <td class="text-center">
                    <input type="checkbox" class="form-check-input row-checkbox"
                        value="${item.file_directory_id}" ${isChecked} onchange="handleRowCheck(this)">
                </td>
                <td>
                    <div class="btn-group">
                        <a href="/file-download/${item.file_directory_id}" target="_blank"
                        class="btn btn-sm btn-outline-primary" download title="Download">
                            <i class="ti ti-download"></i>
                        </a>
                    </div>
                </td>
                <td>
                    <div class="d-flex flex-column">
                        <strong>${item.nama_dokumen}</strong>
                        <small class="text-muted" style="font-size: 10px;">Path: ${item.file}</small>
                    </div>
                </td>
                <td><span class="badge bg-light text-primary border">${typeDok}</span></td>
                <td></td>
                <td>${item.entry_at || '-'}</td>
            </tr>`;
    }

    // === TREE FUNCTIONS ===

    function buildTree(items) {
        const root = { folders: {}, files: [] };
        (items || []).forEach(item => {
            const path = (item.file || '').split('/').filter(Boolean);
            if (path.length === 0) {
                root.files.push(item);
                return;
            }
            const fileName = path.pop();
            let node = root;
            path.forEach(part => {
                if (!node.folders[part]) {
                    node.folders[part] = { folders: {}, files: [] };
                }
                node = node.folders[part];
            });
            node.files.push({ ...item, __fileName: fileName });
        });
        return root;
    }

    function expandAllFolders(node, basePath) {
        Object.keys(node.folders || {}).forEach(folder => {
            const folderPath = basePath ? `${basePath}/${folder}` : folder;
            expandedFolders.add(folderPath);
            expandAllFolders(node.folders[folder], folderPath);
        });
    }

    function renderTree(tbody, node, basePath, level) {
        const folderNames = Object.keys(node.folders || {}).sort();

        folderNames.forEach(folder => {
            const folderPath = basePath ? `${basePath}/${folder}` : folder;
            const isExpanded = expandedFolders.has(folderPath);
            const folderNode = node.folders[folder];
            const depth = folderPath.split('/').filter(Boolean).length;
            const canAddChild = isAdminUser && (depth === 1 || depth === 2);

            let lines = '';
            for (let i = 0; i < level; i++) {
                lines += '<span class="tree-line"></span>';
            }

            tbody.innerHTML += `
                <tr class="tree-folder" onclick="toggleFolder('${folderPath}')">
                    <td></td> <td></td> <td>
                        <div class="indent-container">
                            ${lines}
                            <span class="folder-toggle me-1">
                                <i class="ti ${isExpanded ? 'ti-chevron-down' : 'ti-chevron-right'} text-muted" style="font-size: 12px;"></i>
                            </span>
                            <i class="ti ti-folder-filled folder-icon me-2"></i>
                            <strong class="text-dark">${folder}</strong>
                            ${canAddChild ? `
                                <span class="folder-actions">
                                    <button type="button"
                                        class="badge bg-primary"
                                        data-bs-toggle="tooltip"
                                        data-bs-title="${depth === 1 ? 'Tambah Segment' : 'Tambah Item'}"
                                        onclick="event.stopPropagation(); openAddAkreFromFolder('${folderPath.replace(/'/g, "\\\\'")}')">
                                        <i class="ti ti-plus me-1"></i>${depth === 1 ? 'Segment' : 'Item'}
                                    </button>
                                </span>
                            ` : ''}
                        </div>
                    </td>
                    <td><span class="badge bg-light text-muted border-0">FOLDER</span></td>
                    <td class="text-muted small"></td> <td class="text-muted small"></td> </tr>
            `;

            if (isExpanded) {
                renderTree(tbody, folderNode, folderPath, level + 1);
            }
        });

        // Bagian ini akan memanggil renderTreeFileRow yang menampilkan tanggal
        (node.files || []).forEach(item => {
            renderTreeFileRow(tbody, item, level);
        });
    }

    function getFolderMaxDate(node) {
        let dates = [];

        // Ambil tanggal dari file di level ini
        (node.files || []).forEach(f => {
            if (f.entry_at) dates.push(new Date(f.entry_at));
        });

        // Ambil tanggal dari sub-folder (rekursif)
        Object.values(node.folders || {}).forEach(subNode => {
            const subDate = getFolderMaxDate(subNode);
            if (subDate) dates.push(new Date(subDate));
        });

        if (dates.length === 0) return null;

        // Cari tanggal paling besar (terbaru)
        const maxDate = new Date(Math.max(...dates));

        // Format balik ke YYYY-MM-DD
        return maxDate.toISOString().split('T')[0];
    }

    function renderTreeFileRow(targetTbody, item, level){
        const fileName = item.__fileName || (item.file ? item.file.split('/').pop() : 'Unknown');
        const typeDok = fileName.split('.').pop().toUpperCase();
        const isChecked = selectedIds.includes(String(item.file_directory_id)) ? 'checked' : '';

        let lines = '';
        for (let i = 0; i < level; i++) {
            lines += '<span class="tree-line"></span>';
        }

        targetTbody.innerHTML += `
            <tr class="tree-file">
                <td class="text-center">
                    <input type="checkbox" class="form-check-input row-checkbox"
                        value="${item.file_directory_id}" ${isChecked} onchange="handleRowCheck(this)">
                </td>
                <td>
                    <a href="/file-download/${item.file_directory_id}" target="_blank"
                    class="btn btn-sm btn-primary text-white border">
                        <i class="ti ti-download"></i>
                    </a>
                </td>
                <td>
                    <div class="indent-container">
                        ${lines}
                        <span style="width: 24px;"></span> <i class="ti ti-file-text file-icon me-2"></i>
                        <div class="d-flex flex-column">
                            <span class="text-dark fw-medium">${item.nama_dokumen}</span>
                            <small class="text-muted" style="font-size: 10px;">${fileName}</small>
                        </div>
                    </div>
                </td>
                <td><span class="badge bg-danger">${typeDok}</span></td>
                <td>${item.unit?.name || '-'}</td>
                <td class="text-muted small">${formatDateTime(item.entry_at)}</td>
            </tr>`;
    }
    // Tambahkan fungsi ini di dalam <script>
    function toggleFolder(folderPath) {
        if (expandedFolders.has(folderPath)) {
            expandedFolders.delete(folderPath);
        } else {
            expandedFolders.add(folderPath);
        }
        renderTable(document.getElementById('tableSearch').value || '');
    }

    // === UTILITY FUNCTIONS ===

    function handleRowCheck(checkbox) {
        const val = String(checkbox.value);
        if (checkbox.checked) {
            if (!selectedIds.includes(val)) selectedIds.push(val);
        } else {
            selectedIds = selectedIds.filter(id => id !== val);
            document.getElementById('checkAllRows').checked = false;
        }
        updateDownloadButton();
    }

    function updateDownloadButton() {

        const countLabel = document.getElementById('selectedCount');
        btn.disabled = selectedIds.length === 0;
        countLabel.innerText = `${selectedIds.length} dipilih`;
    }

    function updateSummary() {
        const summary = document.getElementById('tableSummary');
        if (!summary) return;

        if (!tableState.total) {
            summary.innerText = 'Tidak ada data';
            return;
        }

        const from = tableState.from || 0;
        const to = tableState.to || 0;
        summary.innerText = `Menampilkan ${from} - ${to} dari ${tableState.total} data`;
    }

    function renderPagination(totalPages){
        if(!paginationEl) return;
        if(totalPages <= 1){
            paginationEl.innerHTML = '';
            return;
        }

        const maxButtons = 5;
        let start = Math.max(1, tableState.page - Math.floor(maxButtons/2));
        let end = Math.min(totalPages, start + maxButtons - 1);
        start = Math.max(1, end - maxButtons + 1);

        let buttons = '';
        buttons += `<button class="btn btn-outline-secondary btn-sm" data-page="prev" ${tableState.page === 1 ? 'disabled' : ''}>‹ Sebelumnya</button>`;

        for(let i=start; i<=end; i++){
            buttons += `<button class="btn btn-sm ${i === tableState.page ? 'btn-primary' : 'btn-outline-secondary'}" data-page="${i}">${i}</button>`;
        }

        buttons += `<button class="btn btn-outline-secondary btn-sm" data-page="next" ${tableState.page === totalPages ? 'disabled' : ''}>Berikutnya ›</button>`;

        paginationEl.innerHTML = `
            <div class="d-flex align-items-center gap-2 flex-wrap">
                <div class="btn-group" role="group">${buttons}</div>
                <span class="small text-muted">Halaman ${tableState.page} dari ${totalPages}</span>
            </div>
        `;
    }

    if(paginationEl){
        paginationEl.addEventListener('click', (e) => {
            const page = e.target.getAttribute('data-page');
            if(!page) return;

            if(page === 'prev' && tableState.page > 1) tableState.page--;
            else if(page === 'next'){
                if(tableState.page < tableState.lastPage) tableState.page++;
            }else{
                tableState.page = parseInt(page, 10) || 1;
            }

            fetchData(tableState.search || '', tableState.page);
        });
    }

    const downloadBtn = document.getElementById('btnDownloadMultiple');
    if (downloadBtn) {
        downloadBtn.addEventListener('click', function(){
            if(selectedIds.length === 0){
                return;
            }
            const payload = { ids: Array.from(selectedIds) };
            downloadBtn.disabled = true;
            downloadBtn.textContent = 'Menyiapkan...';
            fetch('/download-multiple', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                    'X-CSRF-TOKEN': document.querySelector('meta[name="csrf-token"]').content,
                    'X-Requested-With': 'XMLHttpRequest'
                },
                body: JSON.stringify(payload)
            })
            .then(async (res) => {
                const contentType = res.headers.get('content-type') || '';
                if(!res.ok || contentType.includes('application/json')){
                    const err = await res.json().catch(() => ({}));
                    throw new Error(err?.message || 'Gagal download file');
                }
                const blob = await res.blob();
                const url = window.URL.createObjectURL(blob);
                const a = document.createElement('a');
                const disposition = res.headers.get('content-disposition') || '';
                const match = disposition.match(/filename="?([^"]+)"?/);
                a.href = url;
                a.download = match?.[1] || 'files.zip';
                document.body.appendChild(a);
                a.click();
                a.remove();
                window.URL.revokeObjectURL(url);
            })
            .catch(err => {
                Swal.fire({ icon: 'error', title: 'Gagal', text: err.message || 'Gagal download file' });
            })
            .finally(() => {
                downloadBtn.disabled = selectedIds.length === 0;
                downloadBtn.textContent = 'Download Terpilih';
            });
        });
    }

    document.addEventListener('click', function(e){
        const toggle = e.target.closest('.folder-toggle');
        if (!toggle) return;
        const folderPath = toggle.getAttribute('data-folder');
        if (!folderPath) return;
        if (expandedFolders.has(folderPath)) {
            expandedFolders.delete(folderPath);
        } else {
            expandedFolders.add(folderPath);
        }
        renderTable(document.getElementById('tableSearch').value || '');
    });

    function formatDateTime(value) {
        if (!value) return '—';
        const d = new Date(value);
        if (isNaN(d)) return value;
        const pad = n => String(n).padStart(2, '0');
        return `${d.getFullYear()}-${pad(d.getMonth()+1)}-${pad(d.getDate())} `
            + `${pad(d.getHours())}:${pad(d.getMinutes())}`;
    }
    const katDok = @json($katDok);
    const formCreate = document.getElementById('formFile');
    const modalCreate = document.getElementById('modalCreateFile');
    let colCount = 1;

    document.addEventListener('change', function(e){
        if(!e.target.classList.contains('toggle-expired')) return;
        const targetId = e.target.getAttribute('data-target');
        if(!targetId) return;
        const fieldWrap = document.getElementById(targetId);
        const input = fieldWrap?.querySelector('input');
        if (input) input.disabled = !e.target.checked;
    });

    let akreData = [];
    let akreLoaded = false;
    let akreFlat = [];

    function loadAkreData(){
        if(akreLoaded) return Promise.resolve(akreData);
        return fetch('/json/akreditasi.jff')
            .then(res => res.json())
            .then(data => {
                akreData = Array.isArray(data) ? data : [];
                akreFlat = [];
                akreLoaded = true;
                return akreData;
            })
            .catch(() => {
                akreData = [];
                akreFlat = [];
                akreLoaded = true;
                return akreData;
            });
    }

    function refreshAkreData(){
        akreLoaded = false;
        akreData = [];
        akreFlat = [];
        return loadAkreData();
    }

    function refreshAkreSelects(){
        return refreshAkreData().then(() => {
            document.querySelectorAll('select.akre-select').forEach(selectEl => {
                const current = selectEl.value;
                fillAkreSelect(selectEl);
                if(current) {
                    // restore selection if still exists
                    selectEl.value = current;
                }
                if(window.$ && $.fn.select2){
                    $(selectEl).trigger('change');
                }
            });
        });
    }

    function getAkreFlat(){
        if(akreFlat.length) return akreFlat;
        akreFlat = (akreData || []).flatMap(type => {
            const segments = Array.isArray(type.segment) ? type.segment : [];
            return segments.flatMap(seg => {
                const children = Array.isArray(seg.turunan) ? seg.turunan : [];
                return children.map(child => ({
                    value: `${type.name}/${seg.name}/${child.name}`,
                    label: `${type.name} / ${child.name}`,
                    type: type.name,
                    segment: seg.name,
                    item: child.name
                }));
            });
        });
        return akreFlat;
    }

    function fillAkreSelect(selectEl){
        if(!selectEl) return;
        selectEl.innerHTML = '<option value="">Pilih Instrumen</option>';
        getAkreFlat().forEach(optData => {
            const opt = document.createElement('option');
            opt.value = optData.value;
            opt.textContent = optData.label;
            selectEl.appendChild(opt);
        });
    }

    function setKategoriRequired(index, isRequired){
        const katSelect = document.getElementById(`select_kategori_${index}`);
        if (!katSelect) return;
        if (isRequired) {
            katSelect.setAttribute('required', 'required');
        } else {
            katSelect.removeAttribute('required');
        }
    }

    function resetAkreFields(index){
        const selectEl = document.getElementById(`akre_select_${index}`);
        const typeInput = document.getElementById(`akre_type_${index}`);
        const segmentInput = document.getElementById(`akre_segment_${index}`);
        const itemInput = document.getElementById(`akre_item_${index}`);
        if(selectEl){
            selectEl.value = '';
            if(window.$ && $.fn.select2) $(selectEl).val(null).trigger('change');
        }
        if(typeInput) typeInput.value = '';
        if(segmentInput) segmentInput.value = '';
        if(itemInput) itemInput.value = '';
        setKategoriRequired(index, false);
    }

    function enableAkreFields(index){
        const selectEl = document.getElementById(`akre_select_${index}`);
        setKategoriRequired(index, false);
        loadAkreData().then(() => {
            fillAkreSelect(selectEl);
            if(window.$ && $.fn.select2){
                $(selectEl).select2({
                    dropdownParent: $('#modalCreateFile'),
                    placeholder: 'Pilih Instrumen',
                    allowClear: true
                });
            }
        });
    }

    function initKategoriSelect2(index){
        if(!window.$ || !$.fn.select2) return;
        const katSelect = $(`#select_kategori_${index}`);
        const hukumSelect = $(`#select_kategori_hukum_${index}`);
        if(katSelect.length){
            katSelect.select2({
                dropdownParent: $('#modalCreateFile'),
                placeholder:'Pilih Kategori',
                allowClear: true
            });
        }
        if(hukumSelect.length){
            hukumSelect.select2({
                dropdownParent: $('#modalCreateFile'),
                placeholder:'Pilih Kategori Hukum',
                allowClear:true
            });
        }
    }

    function selectOptionUnitKerjaV1(localCol){
        const selectUnit = $(`#select_id_unit_kerja_${localCol}`);
        const selectSubUnit = $(`#select_id_sub_unit_kerja_${localCol}`);

        selectUnit.select2({
            placeholder: '-- Pilih Unit Kerja --',
            allowClear:true,
            width: '100%',
            dropdownParent: selectUnit.parent(),
            ajax:{
                url : '/select-unit-kerja-mapping',
                dataType: 'json',
                delay: 250,
                data: function(params){
                    return { q: params.term }
                },
                processResults: function(data){
                    return {
                        results : (data?.data || []).map(item => ({
                            id: item.id+'/'+item.name,
                            text: item.name,
                            sub_units: item.sub_unit_kerja
                        }))
                    }
                },
                cache: true,
            },
            minimumInputLength: 0,
        });

        selectSubUnit.select2({
            placeholder: '-- Pilih Sub Unit Kerja --',
            allowClear: true,
            width: '100%',
            dropdownParent: selectSubUnit.parent()
        });

        selectUnit.on('select2:select', function (e) {
            const data = e.params.data;
            selectSubUnit.empty().append('<option value="" disabled selected>-- Pilih Sub Unit Kerja --</option>');
            if (data.sub_units && data.sub_units.length > 0) {
                data.sub_units.forEach(sub => {
                    selectSubUnit.append(`<option value="${sub.id}/${sub.name}">${sub.name}</option>`);
                });
            }
        });
    }

    window.addFormV2 = function(){
        const col = document.getElementById('col_add_fileV2');
        if (!col) return;
        const katOptions = (Array.isArray(katDok) ? katDok : [])
            .map(k => `<option value="${k.master_kategori_directory_id}/${k.nama_kategori_directory}">${k.nama_kategori_directory}</option>`)
            .join('');

        let html = `
        <div class="row g-3 align-items-start" id="col-${colCount}">
            <hr class="my-3" />
            <div class="col-12 d-flex justify-content-end">
                <button type="button"
                        class="btn btn-sm btn-danger"
                        onclick="removeCol(${colCount})">
                    <i class="fa-solid fa-trash"></i> Hapus
                </button>
            </div>

            <div class="col-md-6">
                <label class="form-label fw-semibold">Unit <span class="text-danger">*</span></label>
                <select class="form-select"
                        name="data[${colCount}][id_unit_kerja]"
                        id="select_id_unit_kerja_${colCount}"
                        required>
                    <option value="" disabled selected>Pilih Unit</option>
                </select>
            </div>

            <div class="col-md-6">
                <label class="form-label fw-semibold">Sub Unit <span class="text-danger">*</span></label>
                <select class="form-select"
                        name="data[${colCount}][id_sub_unit_kerja]"
                        id="select_id_sub_unit_kerja_${colCount}"
                        required>
                    <option value="" disabled selected>Pilih Sub Unit</option>
                </select>
            </div>

            <div class="col-md-4">
                <label class="form-label fw-semibold">Nomor Dokumen</label>
                <div class="input-group">
                    <span class="input-group-text">#</span>
                    <input type="text"
                        class="form-control"
                        name="data[${colCount}][no_dokumen]"
                        placeholder="Contoh: 001/RS/IT/I/2026">
                </div>
            </div>
            <div class="col-md-4">
                <label class="form-label fw-semibold">Nama Dokumen<span class="text-danger">*</span></label>
                <input type="text"
                        class="form-control"
                        name="data[${colCount}][nama_dokumen]"
                        placeholder="Contoh: Panduan Mencuci Tangan" required>
            </div>

            <div class="col-md-4">
                <label class="form-label fw-semibold">Tanggal Terbit</label>
                <input class="form-control"
                        type="date"
                        name="data[${colCount}][date_active]">
            </div>
            <div class="col-md-3">
                <div class="form-check">
                    <input class="form-check-input toggle-expired"
                            type="checkbox"
                            id="hasExpired_${colCount}"
                            data-target="expiredField_${colCount}">
                    <label class="form-check-label" for="hasExpired_${colCount}">Masa Berlaku Dokumen?</label>
                </div>
            </div>

            <div class="col-md-5" id="expiredField_${colCount}">
                <label class="form-label fw-semibold">Tanggal Kedaluwarsa Dokumen</label>
                <input class="form-control"
                        type="date"
                        name="data[${colCount}][tgl_expired]" disabled>
            </div>

            <div class="col-md-4">
                <label class="form-label fw-semibold">Boleh dilihat unit lain? <span class="text-danger">*</span></label>
                <div class="border rounded-3 p-2 bg-light">
                    <div class="form-check">
                        <input class="form-check-input"
                                type="radio"
                                name="data[${colCount}][is_permission]"
                                id="perm_yes_${colCount}"
                                value="1"
                                required>
                        <label class="form-check-label" for="perm_yes_${colCount}">Ya</label>
                    </div>
                    <div class="form-check mt-1">
                        <input class="form-check-input"
                                type="radio"
                                name="data[${colCount}][is_permission]"
                                id="perm_no_${colCount}"
                                value="2"
                                required>
                        <label class="form-check-label" for="perm_no_${colCount}">Tidak</label>
                    </div>
                </div>
            </div>

            <div class="col-md-4">
                <label class="form-label fw-semibold">Instrumen Akreditasi </label>
                <select class="form-select akre-select" id="akre_select_${colCount}" name="data[${colCount}][akre]" style="width: 350px;">
                    <option value="">Pilih Instrumen</option>
                </select>
                <div class="form-text text-muted">Isi form ini bila dokumen yang diunggah merupakan dokumen <strong>akreditasi</strong>.</div>
            </div>
            <div class="col-md-4">
                <label class="form-label fw-semibold">Kategori Hukum</label>
                <select class="form-select select-kat-hukum" name="data[${colCount}][kategori_hukum]" id="select_kategori_hukum_${colCount}" style="width: 350px;">
                    <option value="">Pilih Kategori Hukum</option>
                    <option value="Kebijakan - Peraturan Direktur">Kebijakan - Peraturan Direktur</option>
                    <option value="Kebijakan - Keputusan Direktur Utama">Kebijakan - Keputusan Direktur Utama</option>
                    <option value="Kebijakan - Surat Edaran">Kebijakan - Surat Edaran</option>
                    <option value="Kebijakan - Pengumuman">Kebijakan - Pengumuman</option>
                    <option value="Kerjasama - Pelayanan Kesehatan">Kerjasama - Pelayanan Kesehatan</option>
                    <option value="Kerjasama - Management">Kerjasama - Management</option>
                    <option value="Kerjasama - Pemeliharan">Kerjasama - Pemeliharan</option>
                    <option value="Kerjasama - Diklat">Kerjasama - Diklat</option>
                    <option value="Kerjasama - Luar Negeri">Kerjasama - Luar Negeri</option>
                    <option value="Kerjasama - Area Bisnis">Kerjasama - Area Bisnis</option>
                    <option value="Kerjasama - Pendidikan">Kerjasama - Pendidikan</option>
                    <option value="Kerjasama - Pengampuan KIA">Kerjasama- Pengampuan KIA</option>
                </select>
            </div>
            <div class="col-md-4">
                <label class="form-label fw-semibold">Kategori Lainnya</label>
                <select class="form-select"
                        name="data[${colCount}][master_kategori_directory_id]"
                        id="select_kategori_${colCount}" style="width: 350px;">
                    <option value="">Pilih Kategori</option>
                    ${katOptions}
                </select>
            </div>

            <div class="col-md-12">
                <label for="fileUpload_${colCount}" class="form-label fw-semibold">📂 Upload Dokumen (PDF)</label>
                <div class="border rounded-3 p-3 bg-white shadow-sm">
                    <input class="form-control"
                        type="file"
                        id="fileUpload_${colCount}"
                        accept=".pdf"
                        name="data[${colCount}][file]">
                    <div class="mt-2 text-success fw-semibold d-none file-name" id="fileName_${colCount}"></div>
                </div>
                <div class="form-text text-muted">Format yang didukung: <b>PDF</b>.</div>
            </div>
        </div>`;
        col.insertAdjacentHTML('beforeend', html);
        selectOptionUnitKerjaV1(colCount);
        initKategoriSelect2(colCount);
        enableAkreFields(colCount);
        setKategoriRequired(colCount, false);
        colCount++;
    }

    window.removeCol = function(count){
        const el = document.getElementById(`col-${count}`);
        if (el) el.remove();
    }

    function resetCreateForm(){
        colCount = 1;
        const colAdd = document.getElementById('col_add_fileV2');
        if (colAdd) colAdd.innerHTML = '';
        if (formCreate) {
            formCreate.reset();
            $(formCreate).find('select').val(null).trigger('change');
            $(formCreate).find('input[type="file"]').val('');
            $(formCreate).find('.file-name').addClass('d-none').text('');
        }
        resetAkreFields(0);
        enableAkreFields(0);
    }

    if (formCreate) {
        const select0 = $('#select_id_unit_kerja_0');
        if (select0.length) selectOptionUnitKerjaV1(0);
        initKategoriSelect2(0);
        enableAkreFields(0);

        formCreate.addEventListener('submit', (e) => {
            e.preventDefault();
            const submitBtn = formCreate.querySelector('button[type="submit"]');
            if (submitBtn) submitBtn.disabled = true;
            if (submitBtn) submitBtn.textContent = 'menyimpan...';
            const formData = new FormData(formCreate);

            fetch(`/uploadv2`, {
                method: 'POST',
                headers: {
                    'X-CSRF-TOKEN': document.querySelector('input[name="_token"]')?.value || ''
                },
                body: formData
            }).then(async(res) => {
                const responseData = await res.json();
                if(responseData.status){
                    Swal.fire({
                        icon: 'success',
                        title: 'Berhasil',
                        text: responseData.message || 'Data berhasil disimpan.',
                        timer: 1500,
                        showConfirmButton: false
                    });
                    const modalInstance = bootstrap.Modal.getInstance(modalCreate);
                    modalInstance?.hide();
                    resetCreateForm();
                    fetchData();
                } else {
                    throw new Error(responseData.message || 'Terjadi kesalahan saat menyimpan data.');
                }
            }).catch(err => {
                Swal.fire({
                    icon: 'error',
                    title: 'Gagal',
                    text: err.message || 'Terjadi kesalahan.'
                });
            }).finally(() => {
                if (submitBtn) submitBtn.disabled = false;
                if (submitBtn) submitBtn.textContent = 'Simpan';
            });
        });
    }

    // Admin: tambah folder/instrumen akreditasi (disimpan di public/json/akreditasi.jff)
    const formAkreInstrumen = document.getElementById('formAkreInstrumen');
    const akreSegmentInput = document.getElementById('akreSegmentInput');
    const akreItemInput = document.getElementById('akreItemInput');

    if (akreSegmentInput && akreItemInput) {
        const updateItemEnabled = () => {
            const hasSegment = String(akreSegmentInput.value || '').trim().length > 0;
            akreItemInput.disabled = !hasSegment;
            if (!hasSegment) akreItemInput.value = '';
        };
        akreSegmentInput.addEventListener('input', updateItemEnabled);
        updateItemEnabled();
    }

    if (formAkreInstrumen) {
        formAkreInstrumen.addEventListener('submit', (e) => {
            e.preventDefault();
            const btn = document.getElementById('btnSaveAkreInstrumen');
            if (btn) btn.disabled = true;
            if (btn) btn.textContent = 'menyimpan...';

            const payload = {
                type: String(document.getElementById('akreTypeInput')?.value || '').trim(),
                segment: String(document.getElementById('akreSegmentInput')?.value || '').trim(),
                item: String(document.getElementById('akreItemInput')?.value || '').trim(),
            };
            if (!payload.segment) delete payload.segment;
            if (!payload.item) delete payload.item;

            fetch('/akreditasi/instrumen', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                    'X-CSRF-TOKEN': document.querySelector('input[name="_token"]')?.value || '',
                },
                body: JSON.stringify(payload),
            })
            .then(async (res) => {
                const data = await res.json().catch(() => ({}));
                if (!res.ok) {
                    const msg = data?.message || (data?.errors ? Object.values(data.errors).flat().join(' ') : '') || 'Terjadi kesalahan.';
                    throw new Error(msg);
                }
                if (data?.status === false) {
                    throw new Error(data?.message || 'Terjadi kesalahan.');
                }
                Swal.fire({
                    icon: 'success',
                    title: 'Berhasil',
                    text: data?.message || 'Folder akreditasi berhasil ditambahkan.',
                    timer: 1500,
                    showConfirmButton: false,
                });

                const modalEl = document.getElementById('modalAkreInstrumen');
                const modalInstance = modalEl ? bootstrap.Modal.getInstance(modalEl) : null;
                modalInstance?.hide();

                formAkreInstrumen.reset();
                if (akreItemInput) akreItemInput.disabled = true;

                // refresh dropdown instrumen di form upload
                return refreshAkreSelects();
            })
            .catch((err) => {
                Swal.fire({
                    icon: 'error',
                    title: 'Gagal',
                    text: err?.message || 'Terjadi kesalahan.',
                });
            })
            .finally(() => {
                if (btn) btn.disabled = false;
                if (btn) btn.textContent = 'Simpan';
            });
        });
    }

    // Klik tombol "+" di samping folder (tree view) untuk menambah sub-folder sesuai level:
    // - depth 1 (Type) -> tambah Segment
    // - depth 2 (Type/Segment) -> tambah Item
    window.openAddAkreFromFolder = function(folderPath){
        const modalEl = document.getElementById('modalAkreInstrumen');
        if (!modalEl) return;

        const typeInput = document.getElementById('akreTypeInput');
        const segmentInput = document.getElementById('akreSegmentInput');
        const itemInput = document.getElementById('akreItemInput');
        if (!typeInput || !segmentInput || !itemInput) return;

        const parts = String(folderPath || '').split('/').filter(Boolean);
        const depth = parts.length;

        // reset state
        typeInput.readOnly = false;
        segmentInput.readOnly = false;
        itemInput.disabled = true;
        itemInput.readOnly = false;

        if (depth >= 1) {
            typeInput.value = parts[0] || '';
            typeInput.readOnly = true;
        } else {
            typeInput.value = '';
        }

        if (depth >= 2) {
            segmentInput.value = parts[1] || '';
            segmentInput.readOnly = true;
            itemInput.disabled = false;
            itemInput.value = '';
        } else {
            segmentInput.value = '';
            itemInput.value = '';
        }

        const instance = bootstrap.Modal.getOrCreateInstance(modalEl);
        instance.show();

        // fokus ke field yang tepat
        if (depth >= 2) {
            itemInput.focus();
        } else {
            segmentInput.focus();
        }
    }

    document.addEventListener('change', function(e){
        if(e.target.classList.contains('akre-select')){
            const id = e.target.id || '';
            const idx = id.split('_').pop();
            const [typeVal = '', segmentVal = '', itemVal = ''] = (e.target.value || '').split('/');
            const typeInput = document.getElementById(`akre_type_${idx}`);
            const segmentInput = document.getElementById(`akre_segment_${idx}`);
            const itemInput = document.getElementById(`akre_item_${idx}`);
            if(typeInput) typeInput.value = typeVal;
            if(segmentInput) segmentInput.value = segmentVal;
            if(itemInput) itemInput.value = itemVal;
        }
    });
</script>
@endsection