/* Holidays admin page */
(function () {
  'use strict';
  const API = '/bin/twilio/admin/api/holidays.php';
  const lookups = window.TwAdminHolidayLookups || {};

  function populateScopeTargets() {
    const scope = document.getElementById('hf-scope').value;
    const group = document.getElementById('hf-scope_id-group');
    const sel = document.getElementById('hf-scope_id');
    sel.innerHTML = '';

    if (scope === 'global') {
      group.classList.add('hide');
      return;
    }
    group.classList.remove('hide');
    const blank = document.createElement('option');
    blank.value = '';
    blank.textContent = '— select —';
    sel.appendChild(blank);

    const items = scope === 'ring_group' ? (lookups.ring_groups || []) : (lookups.phone_numbers || []);
    items.forEach(function (it) {
      const opt = document.createElement('option');
      opt.value = String(it.id);
      opt.textContent = scope === 'ring_group' ? it.name : (it.friendly_name + ' (' + it.e164 + ')');
      sel.appendChild(opt);
    });
  }

  function populateBehaviorTarget() {
    const beh = document.getElementById('hf-behavior').value;
    const group = document.getElementById('hf-custom_flow_sid-group');
    const sel = document.getElementById('hf-custom_flow_sid');
    sel.innerHTML = '';
    if (beh !== 'custom_flow') { group.classList.add('hide'); return; }
    group.classList.remove('hide');
    const blank = document.createElement('option');
    blank.value = '';
    blank.textContent = '— select —';
    sel.appendChild(blank);
    (lookups.call_flows || []).forEach(function (f) {
      const opt = document.createElement('option');
      opt.value = f.studio_flow_sid;
      opt.textContent = f.name;
      sel.appendChild(opt);
    });
  }

  function openModal(id) {
    const form = document.getElementById('hol-form');
    form.reset();
    form.elements.timezone.value = 'America/New_York';
    form.elements.scope.value = 'global';
    form.elements.behavior.value = 'closed';
    populateScopeTargets();
    populateBehaviorTarget();

    if (id) {
      const tr = document.querySelector('#hol-table tr[data-id="' + id + '"]');
      if (!tr) return;
      const row = JSON.parse(tr.getAttribute('data-row'));
      document.getElementById('hol-modal-title').textContent = 'Edit holiday';
      form.elements.id.value = row.id;
      form.elements.date.value = row.date || '';
      form.elements.name.value = row.name || '';
      form.elements.scope.value = row.scope || 'global';
      form.elements.behavior.value = row.behavior || 'closed';
      form.elements.timezone.value = row.timezone || 'America/New_York';
      populateScopeTargets();
      populateBehaviorTarget();
      if (row.scope_id) form.elements.scope_id.value = String(row.scope_id);
      if (row.custom_flow_sid) form.elements.custom_flow_sid.value = row.custom_flow_sid;
    } else {
      document.getElementById('hol-modal-title').textContent = 'Add holiday';
      form.elements.id.value = '';
    }
    TwAdmin.openModal('hol-modal');
  }

  async function submitForm(ev) {
    ev.preventDefault();
    const form = document.getElementById('hol-form');
    const submit = document.getElementById('hf-submit');
    submit.disabled = true;

    const data = TwAdmin.serializeForm(form);
    const id = data.id ? parseInt(data.id, 10) : null;
    delete data.id;
    if (data.scope === 'global') data.scope_id = null;
    else data.scope_id = data.scope_id ? parseInt(data.scope_id, 10) : null;
    if (data.behavior !== 'custom_flow') data.custom_flow_sid = null;

    try {
      if (id) {
        await TwAdmin.api(API + '?id=' + id, { method: 'PUT', body: data });
        TwAdmin.flash('success', 'Holiday updated.');
      } else {
        await TwAdmin.api(API, { method: 'POST', body: data });
        TwAdmin.flash('success', 'Holiday added.');
      }
      TwAdmin.closeModal('hol-modal');
      setTimeout(function () { window.location.reload(); }, 350);
    } catch (e) {
      TwAdmin.flash('error', e.message || 'Save failed.');
      submit.disabled = false;
    }
    return false;
  }

  async function deleteHoliday(id, label) {
    if (!TwAdmin.confirmDelete(label)) return;
    try {
      await TwAdmin.api(API + '?id=' + id, { method: 'DELETE' });
      TwAdmin.flash('success', 'Holiday deleted.');
      setTimeout(function () { window.location.reload(); }, 350);
    } catch (e) {
      TwAdmin.flash('error', e.message || 'Delete failed.');
    }
  }

  TwAdmin.openHolidayModal = openModal;
  TwAdmin.submitHolidayForm = submitForm;
  TwAdmin.deleteHoliday = deleteHoliday;
  TwAdmin.refreshHolidayScopeTarget = populateScopeTargets;
  TwAdmin.refreshHolidayBehaviorTarget = populateBehaviorTarget;
})();