/* ADMIN_JS_MARKER */
(() => {
const ADMIN_URL = window.ADMIN_URL;
const ADMIN_PDF_URL = window.ADMIN_PDF_URL;
const MEALS = window.MEALS;
const WEEK = window.WEEK;
const ADMIN_REQUEST_TIMEOUT_MS = 10000;

let currentAdminWeek = '';
let editingOrder = null;
let editQuantities = {};
let lastAdminData = null;
let latestAdminRequest = 0;

function adminHeaders() {
  const h = {};
  const cred = window.googleCredential;
  if (cred) h['Authorization'] = 'Bearer ' + cred;
  return h;
}

function adminFetch(url, options = {}) {
  const controller = new AbortController();
  const timeout = setTimeout(() => controller.abort(), ADMIN_REQUEST_TIMEOUT_MS);
  return fetch(url, { ...options, signal: controller.signal })
    .finally(() => clearTimeout(timeout));
}

function setAdminActionDisabled(action, disabled) {
  document.querySelectorAll('[data-admin-action="' + action + '"]').forEach(btn => {
    btn.disabled = disabled;
  });
}

function loadWeekOrders(week) {
  if (!week) return;
  const requestId = ++latestAdminRequest;
  window.FormUtils.clearStatus('admin');
  currentAdminWeek = week;
  editingOrder = null;
  editQuantities = {};
  const tbody = document.getElementById('admin-tbody');
  tbody.innerHTML = '<tr><td colspan="5" class="admin-loading">Loading...</td></tr>';
  const cards = document.getElementById('admin-cards');
  cards.innerHTML = '<div class="admin-loading">Loading...</div>';
  document.getElementById('admin-empty').classList.add('is-hidden');
  document.getElementById('admin-stats').textContent = '';

  adminFetch(ADMIN_URL + '?week=' + encodeURIComponent(week), { headers: adminHeaders() })
    .then(r => {
      if (!r.ok) throw new Error('HTTP ' + r.status);
      return r.json();
    })
    .then(data => {
      if (requestId === latestAdminRequest && week === currentAdminWeek) {
        renderAdminTable(data);
      }
    })
    .catch(() => {
      if (requestId === latestAdminRequest && week === currentAdminWeek) {
        tbody.innerHTML = '<tr><td colspan="5" class="admin-error">Failed to load orders.</td></tr>';
        cards.innerHTML = '';
        window.FormUtils.showStatus('Failed to load orders.', {
          tone: 'error',
          scope: 'admin',
        });
      }
    });
}

window.loadWeekOrders = loadWeekOrders;

function buildEditQtyRow(name, qty) {
  const wrap = document.createElement('div');
  wrap.className = qty === 0 ? 'edit-qty removed' : 'edit-qty';

  const minusBtn = document.createElement('button');
  minusBtn.type = 'button';
  minusBtn.dataset.adminAction = 'edit-qty';
  minusBtn.dataset.mealName = name;
  minusBtn.dataset.delta = '-1';
  minusBtn.setAttribute('aria-label', 'Remove one ' + name);
  minusBtn.innerHTML = '&minus;';

  const span = document.createElement('span');
  span.textContent = qty;
  span.setAttribute('aria-label', 'Quantity of ' + name);

  const plusBtn = document.createElement('button');
  plusBtn.type = 'button';
  plusBtn.dataset.adminAction = 'edit-qty';
  plusBtn.dataset.mealName = name;
  plusBtn.dataset.delta = '1';
  plusBtn.setAttribute('aria-label', 'Add one ' + name);
  plusBtn.textContent = '+';

  wrap.appendChild(minusBtn);
  wrap.appendChild(span);
  wrap.appendChild(plusBtn);
  wrap.appendChild(document.createTextNode(' ' + name));
  return wrap;
}

function buildAddItemSelect(availableMeals) {
  const wrap = document.createElement('div');
  wrap.className = 'admin-add-item';
  const select = document.createElement('select');
  select.dataset.adminAction = 'add-item-select';

  const defaultOpt = document.createElement('option');
  defaultOpt.value = '';
  defaultOpt.textContent = '+ Add item...';
  select.appendChild(defaultOpt);

  availableMeals.forEach(m => {
    const opt = document.createElement('option');
    const price = m.price || 0;
    opt.value = m.name;
    opt.textContent = m.name + ' ($' + price.toFixed(2) + ')';
    select.appendChild(opt);
  });

  wrap.appendChild(select);
  return wrap;
}

function buildActionButton(label, action, extra) {
  const btn = document.createElement('button');
  btn.type = 'button';
  btn.dataset.adminAction = action;
  if (extra) {
    Object.entries(extra).forEach(([key, val]) => {
      btn.dataset[key] = val;
    });
  }
  btn.textContent = label;
  return btn;
}

function buildEditActions(email) {
  const wrap = document.createElement('div');
  wrap.className = 'admin-actions';
  const saveBtn = buildActionButton('Save', 'save-edit', { email });
  saveBtn.className = 'btn btn-sm btn-save';
  const cancelBtn = buildActionButton('Cancel', 'cancel-edit');
  cancelBtn.className = 'btn btn-sm btn-cancel';
  wrap.appendChild(saveBtn);
  wrap.appendChild(cancelBtn);
  return wrap;
}

function buildViewActions(email, name) {
  const wrap = document.createElement('div');
  wrap.className = 'admin-actions';
  const editBtn = buildActionButton('Edit', 'start-edit', { email });
  editBtn.className = 'btn btn-sm btn-edit';
  const deleteBtn = buildActionButton('Delete', 'delete', { email, name });
  deleteBtn.className = 'btn btn-sm btn-delete';
  wrap.appendChild(editBtn);
  wrap.appendChild(deleteBtn);
  return wrap;
}

function formatSubmittedAt(submittedAt) {
  return submittedAt
    ? new Date(submittedAt).toLocaleString('en-US', {
        timeZone: 'America/New_York',
        month: 'short',
        day: 'numeric',
        hour: 'numeric',
        minute: '2-digit',
      })
    : '';
}

function editTotal() {
  const menuPrices = {};
  MEALS.forEach(m => { menuPrices[m.name] = m.price; });
  return Object.keys(editQuantities).reduce((sum, name) => {
    const price = menuPrices[name] || 0;
    return sum + window.FormUtils.employeePrice(price) * (editQuantities[name] || 0);
  }, 0);
}

function populateOrderItems(container, order, isEditing) {
  if (isEditing) {
    Object.keys(editQuantities).forEach(name => {
      container.appendChild(buildEditQtyRow(name, editQuantities[name] || 0));
    });
    const availableMeals = MEALS.filter(
      m => !Object.prototype.hasOwnProperty.call(editQuantities, m.name)
    );
    if (availableMeals.length > 0) {
      container.appendChild(buildAddItemSelect(availableMeals));
    }
    return '$' + editTotal().toFixed(2);
  }

  order.items.forEach(item => {
    const row = document.createElement('div');
    row.className = 'admin-item';
    row.appendChild(document.createTextNode(item.name + ' ×' + item.quantity + ' '));
    const sub = document.createElement('span');
    sub.className = 'admin-muted';
    sub.textContent = '($' + item.subtotal.toFixed(2) + ')';
    row.appendChild(sub);
    container.appendChild(row);
  });
  return '$' + order.total.toFixed(2);
}

function buildAdminCard(order) {
  const card = document.createElement('article');
  card.className = 'admin-order-card';
  card.dataset.email = order.employee_email;
  const isEditing = editingOrder === order.employee_email;

  const header = document.createElement('div');
  header.className = 'admin-card-header';
  const employee = document.createElement('div');
  employee.className = 'admin-card-employee';
  const name = document.createElement('strong');
  name.textContent = order.employee_name;
  const email = document.createElement('span');
  email.className = 'admin-muted';
  email.textContent = order.employee_email;
  employee.appendChild(name);
  employee.appendChild(email);
  const time = document.createElement('span');
  time.className = 'admin-card-time';
  time.textContent = formatSubmittedAt(order.submitted_at);
  header.appendChild(employee);
  header.appendChild(time);

  const items = document.createElement('div');
  items.className = 'admin-card-items';
  const total = populateOrderItems(items, order, isEditing);

  const footer = document.createElement('div');
  footer.className = 'admin-card-footer';
  const totalWrap = document.createElement('div');
  totalWrap.className = 'admin-card-total';
  const totalLabel = document.createElement('span');
  totalLabel.textContent = 'Total';
  const totalValue = document.createElement('strong');
  totalValue.textContent = total;
  totalWrap.appendChild(totalLabel);
  totalWrap.appendChild(totalValue);
  footer.appendChild(totalWrap);
  footer.appendChild(
    isEditing
      ? buildEditActions(order.employee_email)
      : buildViewActions(order.employee_email, order.employee_name)
  );

  card.appendChild(header);
  card.appendChild(items);
  card.appendChild(footer);
  return card;
}

function renderAdminCards(data) {
  const cards = document.getElementById('admin-cards');
  cards.innerHTML = '';
  (data.orders || []).forEach(order => {
    cards.appendChild(buildAdminCard(order));
  });
}

function renderAdminTable(data) {
  lastAdminData = data;
  const hasOrders = !!(data.orders && data.orders.length > 0);
  const dlBtn = document.getElementById('admin-download-btn');
  if (dlBtn) dlBtn.disabled = !hasOrders;
  const tbody = document.getElementById('admin-tbody');
  tbody.innerHTML = '';
  const cards = document.getElementById('admin-cards');
  cards.innerHTML = '';

  if (!hasOrders) {
    document.getElementById('admin-empty').classList.remove('is-hidden');
    document.getElementById('admin-stats').textContent = '';
    return;
  }

  document.getElementById('admin-empty').classList.add('is-hidden');
  const statsEl = document.getElementById('admin-stats');
  statsEl.replaceChildren();
  const empStrong = document.createElement('strong');
  empStrong.textContent = String(data.total_employees);
  statsEl.appendChild(empStrong);
  statsEl.appendChild(
    document.createTextNode(
      ' employee' + (data.total_employees !== 1 ? 's' : '') + ' ordered · '
    )
  );
  const totalStrong = document.createElement('strong');
  totalStrong.textContent = '$' + data.grand_total.toFixed(2);
  statsEl.appendChild(totalStrong);
  statsEl.appendChild(document.createTextNode(' total payroll deductions'));

  data.orders.forEach((order, idx) => {
    const tr = document.createElement('tr');
    tr.id = 'admin-row-' + idx;
    const isEditing = editingOrder === order.employee_email;

    const empTd = document.createElement('td');
    const nameStrong = document.createElement('strong');
    nameStrong.textContent = order.employee_name;
    empTd.appendChild(nameStrong);
    empTd.appendChild(document.createElement('br'));
    const emailSpan = document.createElement('span');
    emailSpan.className = 'admin-muted';
    emailSpan.textContent = order.employee_email;
    empTd.appendChild(emailSpan);

    const itemsTd = document.createElement('td');
    itemsTd.className = 'items-cell';

    let totalHtml;
    if (isEditing) {
      const editNames = Object.keys(editQuantities);
      editNames.forEach(name => {
        itemsTd.appendChild(buildEditQtyRow(name, editQuantities[name] || 0));
        itemsTd.appendChild(document.createElement('br'));
      });
      const availableMeals = MEALS.filter(m => !Object.prototype.hasOwnProperty.call(editQuantities, m.name));
      if (availableMeals.length > 0) {
        itemsTd.appendChild(buildAddItemSelect(availableMeals));
      }
      totalHtml = '$' + editTotal().toFixed(2);
      tr.appendChild(empTd);
      tr.appendChild(itemsTd);
    } else {
      order.items.forEach((item, itemIdx) => {
        if (itemIdx > 0) itemsTd.appendChild(document.createElement('br'));
        itemsTd.appendChild(document.createTextNode(item.name + ' ×' + item.quantity + ' '));
        const sub = document.createElement('span');
        sub.className = 'admin-muted';
        sub.textContent = '($' + item.subtotal.toFixed(2) + ')';
        itemsTd.appendChild(sub);
      });
      totalHtml = '$' + order.total.toFixed(2);
      tr.appendChild(empTd);
      tr.appendChild(itemsTd);
    }

    const totalTd = document.createElement('td');
    totalTd.className = 'total-cell';
    totalTd.textContent = totalHtml;

    const timeTd = document.createElement('td');
    timeTd.className = 'time-cell';
    timeTd.textContent = formatSubmittedAt(order.submitted_at);

    const actionsTd = document.createElement('td');
    if (isEditing) {
      actionsTd.appendChild(buildEditActions(order.employee_email));
    } else {
      actionsTd.appendChild(buildViewActions(order.employee_email, order.employee_name));
    }

    tr.appendChild(totalTd);
    tr.appendChild(timeTd);
    tr.appendChild(actionsTd);
    tbody.appendChild(tr);
  });

  const totalRow = document.createElement('tr');
  totalRow.className = 'admin-total-row';
  const mealCount = data.orders.reduce((s, o) => s + o.items.reduce((a, i) => a + i.quantity, 0), 0);
  const t1 = document.createElement('td');
  t1.textContent = 'Total';
  const t2 = document.createElement('td');
  t2.textContent = mealCount + (mealCount === 1 ? ' meal' : ' meals');
  const t3 = document.createElement('td');
  t3.className = 'total-cell';
  t3.textContent = '$' + data.grand_total.toFixed(2);
  totalRow.appendChild(t1);
  totalRow.appendChild(t2);
  totalRow.appendChild(t3);
  totalRow.appendChild(document.createElement('td'));
  totalRow.appendChild(document.createElement('td'));
  tbody.appendChild(totalRow);
  renderAdminCards(data);
}

function downloadOrderList() {
  const data = lastAdminData;
  if (!data || !data.orders || data.orders.length === 0) return;
  const totals = {};
  data.orders.forEach(o => (o.items || []).forEach(i => {
    const name = i.name || '';
    totals[name] = (totals[name] || 0) + (i.quantity || 0);
  }));
  const names = Object.keys(totals).sort((a, b) => a.localeCompare(b));
  const esc = v => {
    const s = String(v);
    const safe = /^[=+\-@\t\r]/.test(s) ? "'" + s : s;
    return /[",\n]/.test(safe) ? '"' + safe.replace(/"/g, '""') + '"' : safe;
  };
  const rows = [['Item', 'Quantity']].concat(names.map(n => [n, totals[n]]));
  const csv = rows.map(r => r.map(esc).join(',')).join('\r\n');
  const week = data.week || currentAdminWeek || WEEK;
  const blob = new Blob([csv], { type: 'text/csv;charset=utf-8;' });
  const url = URL.createObjectURL(blob);
  const a = document.createElement('a');
  a.href = url;
  a.download = 'order-list-' + week + '.csv';
  document.body.appendChild(a);
  a.click();
  document.body.removeChild(a);
  URL.revokeObjectURL(url);
}

function downloadSummaryPdf() {
  const week = currentAdminWeek || WEEK;
  const btn = document.getElementById('admin-pdf-btn');
  if (btn) btn.disabled = true;
  window.FormUtils.clearStatus('admin');
  adminFetch(ADMIN_PDF_URL + '?week=' + encodeURIComponent(week), { headers: adminHeaders() })
    .then(r => r.json().then(data => ({ ok: r.ok, status: r.status, data })))
    .then(({ ok, status, data }) => {
      if (ok && data.url) {
        // Only follow https presigned URLs from our admin API.
        if (typeof data.url === 'string' && data.url.startsWith('https://')) {
          window.location.href = data.url;
        } else {
          window.FormUtils.showStatus('Could not fetch the summary PDF: invalid URL', {
            tone: 'error',
            scope: 'admin',
          });
        }
      } else if (status === 404) {
        window.FormUtils.showStatus(
          'No summary PDF for ' + week + ' yet — it is generated when the week closes on Thursday.',
          { tone: 'info', scope: 'admin' }
        );
      } else {
        window.FormUtils.showStatus(
          'Could not fetch the summary PDF: ' + (data.error || 'unknown error'),
          { tone: 'error', scope: 'admin' }
        );
      }
    })
    .catch(() => {
      window.FormUtils.showStatus('Could not fetch the summary PDF.', {
        tone: 'error',
        scope: 'admin',
      });
    })
    .finally(() => { if (btn) btn.disabled = false; });
}

function adminStartEdit(email) {
  window.FormUtils.clearStatus('admin');
  setAdminActionDisabled('start-edit', true);
  adminFetch(ADMIN_URL + '?week=' + encodeURIComponent(currentAdminWeek), { headers: adminHeaders() })
    .then(r => {
      if (!r.ok) throw new Error('HTTP ' + r.status);
      return r.json();
    })
    .then(data => {
      lastAdminData = data;
      const order = data.orders.find(o => o.employee_email === email);
      if (!order) return;
      editingOrder = email;
      editQuantities = {};
      order.items.forEach(i => { editQuantities[i.name] = i.quantity; });
      renderAdminTable(data);
    })
    .catch(() => {
      window.FormUtils.showStatus('Failed to load this order for editing.', {
        tone: 'error',
        scope: 'admin',
      });
    })
    .finally(() => setAdminActionDisabled('start-edit', false));
}

function adminCancelEdit() {
  editingOrder = null;
  editQuantities = {};
  if (lastAdminData) renderAdminTable(lastAdminData);
}

function adminEditQty(name, delta) {
  const current = editQuantities[name] || 0;
  editQuantities[name] = Math.max(0, current + delta);
  if (lastAdminData) renderAdminTable(lastAdminData);
}

function adminAddItem(name) {
  if (!name) return;
  editQuantities[name] = 1;
  if (lastAdminData) renderAdminTable(lastAdminData);
}

function adminSaveEdit(email) {
  const items = Object.entries(editQuantities)
    .filter(([, q]) => q > 0)
    .map(([name, quantity]) => ({ name, quantity }));
  if (items.length === 0) {
    // confirm() retained deliberately for destructive zero-qty → delete guard.
    if (confirm('All quantities are zero. Delete this order instead?')) {
      adminDeleteOrder(email, '');
    }
    return;
  }
  window.FormUtils.clearStatus('admin');
  setAdminActionDisabled('save-edit', true);
  adminFetch(ADMIN_URL, {
    method: 'PUT',
    headers: { ...adminHeaders(), 'Content-Type': 'application/json' },
    body: JSON.stringify({ week: currentAdminWeek, email, items }),
  })
    .then(r => { if (!r.ok) return r.json().then(d => { throw new Error(d.error); }); return r.json(); })
    .then(() => { editingOrder = null; editQuantities = {}; loadWeekOrders(currentAdminWeek); })
    .catch(e => {
      window.FormUtils.showStatus('Failed to update: ' + e.message, {
        tone: 'error',
        scope: 'admin',
      });
    })
    .finally(() => setAdminActionDisabled('save-edit', false));
}

function adminDeleteOrder(email, name) {
  const label = name ? name + ' (' + email + ')' : email;
  // confirm() retained deliberately for destructive delete guard.
  if (!confirm('Delete order for ' + label + '?')) return;
  window.FormUtils.clearStatus('admin');
  setAdminActionDisabled('delete', true);
  adminFetch(ADMIN_URL + '?week=' + encodeURIComponent(currentAdminWeek) + '&email=' + encodeURIComponent(email), {
    method: 'DELETE',
    headers: adminHeaders(),
  })
    .then(r => { if (!r.ok) return r.json().then(d => { throw new Error(d.error); }); return r.json(); })
    .then(() => loadWeekOrders(currentAdminWeek))
    .catch(e => {
      window.FormUtils.showStatus('Failed to delete: ' + e.message, {
        tone: 'error',
        scope: 'admin',
      });
    })
    .finally(() => setAdminActionDisabled('delete', false));
}

function handleAdminPanelClick(e) {
  const btn = e.target.closest('[data-admin-action]');
  if (btn) {
    const action = btn.dataset.adminAction;
    if (action === 'start-edit') {
      adminStartEdit(btn.dataset.email);
    } else if (action === 'delete') {
      adminDeleteOrder(btn.dataset.email, btn.dataset.name || '');
    } else if (action === 'save-edit') {
      adminSaveEdit(btn.dataset.email);
    } else if (action === 'cancel-edit') {
      adminCancelEdit();
    } else if (action === 'edit-qty') {
      adminEditQty(btn.dataset.mealName, parseInt(btn.dataset.delta, 10));
    } else if (action === 'download-list') {
      downloadOrderList();
    } else if (action === 'download-pdf') {
      downloadSummaryPdf();
    } else if (action === 'hide-admin') {
      window.hideAdmin();
    }
    return;
  }
}

function adminInit() {
  const panel = document.getElementById('admin-panel');
  if (panel) {
    panel.addEventListener('click', handleAdminPanelClick);
    panel.addEventListener('change', (e) => {
      const select = e.target.closest('[data-admin-action="add-item-select"]');
      if (select && select.value) {
        adminAddItem(select.value);
        select.selectedIndex = 0;
      }
    });
  }

  const weekSelect = document.getElementById('admin-week');
  if (weekSelect) {
    weekSelect.addEventListener('change', () => loadWeekOrders(weekSelect.value));
  }
}

adminInit();
})();