if (window.location.pathname.endsWith('/index.html')) {
  const cleanUrl = window.location.pathname.replace('/index.html', '/') + window.location.search + window.location.hash;
  window.history.replaceState(null, '', cleanUrl);
}

let state = {
  user: null, role: null,
  options: { items: [] },
  data: [],
  currentMode: 'ADD', 
  currentRowIndex: null,
  currentPage: 1,      
  rowsPerPage: 10      
};

const ENC = "aHR0cHM6Ly9zY3JpcHQuZ29vZ2xlLmNvbS9tYWNyb3Mvcy9BS2Z5Y2J4MG5tbDVJc1d0NXh1VWVNTGZpZjY5OU9MSEQ5NF9rdGZneExUWnRoQ1VpUDIyMFJhbE5kUDdfaFh1WGUyREpyMWhBQS9leGVj";
const GWP = atob(ENC);

async function apiCall(action, payload = {}) {
  const reqPayload = { action, username: state.user, password: state.password, ...payload };
  const response = await fetch(GWP, { method: 'POST', body: JSON.stringify(reqPayload) });
  const res = await response.json();
  if (res.status === 'error') throw new Error(res.message);
  return res.data;
}

async function login() {
  const u = document.getElementById('username').value;
  const p = document.getElementById('password').value;
  try {
    const data = await apiCall('login', { username: u, password: p });
    state.user = u; state.password = p; state.role = data.role;
    
    document.getElementById('login-view').classList.add('d-none');
    document.getElementById('app-view').classList.remove('d-none');
    
    document.getElementById('nav-username').innerText = state.user;
    document.getElementById('drop-username').innerText = state.user;
    document.getElementById('drop-role').innerText = state.role;
    
    const btnAdd = document.getElementById('btn-add-new');
    btnAdd.classList.remove('d-none');
    if (state.role === 'Viewer') {
      btnAdd.disabled = true;
    } else {
      btnAdd.disabled = false;
    }
    
    await loadInitialData();
  } catch (e) {
    document.getElementById('login-error').classList.remove('d-none');
  }
}

function logout() {
  state.user = null; state.password = null; state.role = null;
  document.getElementById('app-view').classList.add('d-none');
  document.getElementById('login-view').classList.remove('d-none');
  document.getElementById('username').value = '';
  document.getElementById('password').value = '';
}

async function loadInitialData() {
  document.getElementById('tableBody').innerHTML = `<tr><td colspan="17" class="text-center py-4"><span class="spinner-border spinner-border-sm text-warning me-2"></span>Loading data...</td></tr>`;
  
  const result = await apiCall('getData');
  state.options = result.options;
  state.data = result.data;
  populateDropdowns();
  renderTable();
}

function populateDropdowns() {
  const buildOptions = (arr, valKey, labelKey = null) => 
    arr.map(i => `<option value="${labelKey ? i[labelKey] : i}">`).join('');
  
  document.getElementById('dl_supplier').innerHTML = buildOptions(state.options.suppliers);
  document.getElementById('dl_item').innerHTML = state.options.items.map(i => `<option value="${i.display}">`).join('');
  
  document.getElementById('f_subInv').innerHTML = `<option value="">Select...</option>` + 
    state.options.subinv.map(i => `<option value="${i}">${i}</option>`).join('');
}

function updateUOM() {
  const selectedItemDisplay = document.getElementById('f_item').value;
  const itemData = state.options.items.find(i => i.display === selectedItemDisplay);
  document.getElementById('f_uom').value = itemData ? itemData.uom : '';
  checkFormValidity();
}

function resetPageAndRender() {
  state.rowsPerPage = parseInt(document.getElementById('rowsPerPage').value);
  state.currentPage = 1;
  renderTable();
}

function changePage(page) {
  state.currentPage = page;
  renderTable();
}

function displayDate(dateStr) {
  if (!dateStr) return '';
  return new Date(dateStr).toLocaleDateString('id-ID', { year: 'numeric', month: '2-digit', day: '2-digit' });
}

function renderTable() {
  const search = document.getElementById('searchInput').value.toLowerCase();
  const filtered = state.data.filter(r => Object.values(r).some(v => String(v).toLowerCase().includes(search)));

  const total = filtered.length;
  const totalPages = Math.ceil(total / state.rowsPerPage);
  if (state.currentPage > totalPages) state.currentPage = totalPages || 1;
  
  const startIdx = (state.currentPage - 1) * state.rowsPerPage;
  const paginated = filtered.slice(startIdx, startIdx + state.rowsPerPage);

  document.getElementById('totalRows').innerText = total;
  document.getElementById('pageStart').innerText = total === 0 ? 0 : startIdx + 1;
  document.getElementById('pageEnd').innerText = Math.min(startIdx + state.rowsPerPage, total);

  let pageHTML = `<li class="page-item ${state.currentPage === 1 ? 'disabled' : ''}"><button class="page-link" onclick="changePage(${state.currentPage - 1})">‹</button></li>`;
  let pStart = Math.max(1, state.currentPage - 2);
  let pEnd = Math.min(totalPages, state.currentPage + 2);
  for(let i = pStart; i <= pEnd; i++) {
    pageHTML += `<li class="page-item ${state.currentPage === i ? 'active' : ''}"><button class="page-link" onclick="changePage(${i})">${i}</button></li>`;
  }
  pageHTML += `<li class="page-item ${state.currentPage === totalPages || totalPages === 0 ? 'disabled' : ''}"><button class="page-link" onclick="changePage(${state.currentPage + 1})">›</button></li>`;
  document.getElementById('paginationNav').innerHTML = pageHTML;

  let headHTML = `<tr>
    <th>Nama Supplier</th><th>Tgl Kedatangan</th><th>No. SJ Supplier</th>
    <th>Item</th><th>Qty Awal</th><th>Qty Reject</th><th>Qty Nett</th>
    <th>UOM</th><th>Sub Inv</th><th>No. STG Manual</th><th>Ekspedisi PIC</th>
    <th>Nomer PO</th><th>Tanggal PO</th><th>No. Receive</th><th>Notes</th>
    <th>Status</th><th class="text-center sticky-right">Action</th>
  </tr>`;
  document.getElementById('tableHead').innerHTML = headHTML;

  if (paginated.length === 0) {
    document.getElementById('tableBody').innerHTML = `<tr><td colspan="17" class="text-center py-4 text-muted">No data found</td></tr>`;
    return;
  }

  let bodyHTML = '';
  paginated.forEach(row => {
    let statColor = row.stat === 'OK' ? 'bg-success' : (row.stat === 'EDITED' ? 'bg-primary' : 'bg-secondary');
    
    // Disable edit button if role is Viewer OR if status is OK
    let isViewer = state.role === 'Viewer';
    let btnDisabled = (isViewer || row.stat === 'OK') ? 'disabled' : '';
    let btnClass = btnDisabled ? 'btn-secondary opacity-50' : 'btn-warning';

    bodyHTML += `<tr>
      <td>${row.supplier}</td>
      <td>${displayDate(row.tglDatang)}</td>
      <td>${row.noSj}</td>
      <td>${row.item}</td>
      <td>${row.qtyAwal}</td>
      <td>${row.qtyReject}</td>
      <td>${row.qtyNett}</td>
      <td>${row.uom}</td>
      <td>${row.subInv}</td>
      <td>${row.stgManual}</td>
      <td>${displayDate(row.ekspedisi)}</td>
      <td>${row.noPo}</td>
      <td>${displayDate(row.tglPo)}</td>
      <td>${row.noReceive}</td>
      <td>${row.notes}</td>
      <td><span class="badge ${statColor}">${row.stat}</span></td>
      <td class="text-center sticky-right">
        <button class="btn ${btnClass} btn-sm text-white py-0 px-2" onclick="openEditModal(${row._rowIndex})" title="Edit" ${btnDisabled}>
          <i class="bi bi-pencil-square"></i>
        </button>
      </td>
    </tr>`;
  });
  document.getElementById('tableBody').innerHTML = bodyHTML;
}

function openAddModal() {
  if (state.role === 'Viewer') return;
  state.currentMode = 'ADD';
  document.getElementById('recordForm').reset();
  document.getElementById('modalTitle').innerText = "Kedatangan Baru";
  
  document.getElementById('section-edit').classList.add('d-none');
  document.getElementById('divider-edit').classList.add('d-none');
  
  lockFields(false); 
  document.getElementById('btnActionSave').innerText = "Save";
  document.getElementById('btnActionSave').disabled = true;
  
  new coreui.Modal(document.getElementById('dataModal')).show();
}

function openEditModal(rowIndex) {
  if (state.role === 'Viewer') return;
  state.currentMode = 'EDIT';
  state.currentRowIndex = rowIndex;
  const rowData = state.data.find(r => r._rowIndex === rowIndex);
  
  document.getElementById('modalTitle').innerText = "Edit Row";
  document.getElementById('section-edit').classList.remove('d-none');
  document.getElementById('divider-edit').classList.remove('d-none');

  document.getElementById('f_supplier').value = rowData.supplier;
  document.getElementById('f_tglDatang').value = formatDateForInput(rowData.tglDatang);
  document.getElementById('f_noSj').value = rowData.noSj;
  document.getElementById('f_item').value = rowData.item;
  document.getElementById('f_qtyAwal').value = rowData.qtyAwal;
  document.getElementById('f_qtyReject').value = rowData.qtyReject;
  document.getElementById('f_qtyNett').value = rowData.qtyNett;
  document.getElementById('f_uom').value = rowData.uom;
  document.getElementById('f_subInv').value = rowData.subInv;
  document.getElementById('f_stgManual').value = rowData.stgManual;
  document.getElementById('f_ekspedisi').value = formatDateForInput(rowData.ekspedisi);
  document.getElementById('f_notes').value = rowData.notes;

  const cleanPo = rowData.noPo ? String(rowData.noPo).replace('PO/SKL/', '') : '';
  document.getElementById('f_noPo').value = cleanPo;
  document.getElementById('f_tglPo').value = formatDateForInput(rowData.tglPo);
  document.getElementById('f_noReceive').value = rowData.noReceive;
  
  lockFields(true); 
  document.getElementById('btnActionSave').innerText = "Update";
  document.getElementById('btnActionSave').disabled = true;
  
  new coreui.Modal(document.getElementById('dataModal')).show();
}

function formatDateForInput(dateString) {
  if (!dateString) return '';
  const d = new Date(dateString);
  return d.toISOString().split('T')[0];
}

function lockFields(isEdit) {
  const toLock = ['f_supplier', 'f_tglDatang', 'f_noSj', 'f_item'];
  toLock.forEach(id => document.getElementById(id).disabled = isEdit);
}

function checkFormValidity() {
  let isValid = true;
  if (state.currentMode === 'ADD') {
    document.querySelectorAll('.req-add').forEach(el => {
      if (!el.value.trim()) isValid = false;
    });
  } else {
    document.querySelectorAll('.req-edit').forEach(el => {
      if (!el.value.trim()) isValid = false;
    });
    
    const noPoVal = document.getElementById('f_noPo').value.trim();
    const tglPoVal = document.getElementById('f_tglPo').value.trim();
    if ((noPoVal && !tglPoVal) || (!noPoVal && tglPoVal)) {
        isValid = false; 
    }
  }
  document.getElementById('btnActionSave').disabled = !isValid;
}

async function submitData() {
  const btn = document.getElementById('btnActionSave');
  btn.disabled = true;
  btn.innerHTML = `<span class="spinner-border spinner-border-sm"></span> Processing...`;

  const payload = {
    qtyAwal: document.getElementById('f_qtyAwal').value,
    qtyReject: document.getElementById('f_qtyReject').value,
    qtyNett: document.getElementById('f_qtyNett').value,
    subInv: document.getElementById('f_subInv').value,
    stgManual: document.getElementById('f_stgManual').value.toUpperCase(),
    ekspedisi: document.getElementById('f_ekspedisi').value,
    notes: document.getElementById('f_notes').value 
  };

  if (state.currentMode === 'ADD') {
    payload.supplier = document.getElementById('f_supplier').value;
    payload.tglDatang = document.getElementById('f_tglDatang').value;
    payload.noSj = document.getElementById('f_noSj').value;
    payload.item = document.getElementById('f_item').value;
    payload.uom = document.getElementById('f_uom').value;
    await apiCall('saveRow', { rowData: payload });
  } else {
    payload.noPo = document.getElementById('f_noPo').value;
    payload.tglPo = document.getElementById('f_tglPo').value;
    payload.noReceive = document.getElementById('f_noReceive').value;
    await apiCall('updateRow', { rowData: payload, rowIndex: state.currentRowIndex });
  }

  closeModal('dataModal');
  await loadInitialData();
}

function closeModal(id) {
  const modal = coreui.Modal.getInstance(document.getElementById(id));
  if (modal) modal.hide();
}