import { apiGet, apiPost, apiPut, isAuthRedirectError } from '../api.js';
import { guard } from '../core/auth-guard.js';
import { esc, formatDeSyncDateTime } from '../core/utils.js';

const loadingEl = document.getElementById('page-loading');
const mainEl = document.getElementById('page-main');
const errEl = document.getElementById('page-error');

function showError(msg) {
  loadingEl.hidden = true;
  mainEl.hidden = true;
  errEl.hidden = false;
  errEl.textContent = msg;
}

function renderSyncLog(entries) {
  const tbody = document.getElementById('sync-log-body');
  if (!entries.length) {
    tbody.innerHTML =
      '<tr><td colspan="5" class="muted">Noch keine Einträge.</td></tr>';
    return;
  }
  tbody.innerHTML = entries
    .map(
      (e) => `
        <tr>
          <td>${esc(formatDeSyncDateTime(e.finishedAt))}</td>
          <td>${e.triggerType === 'automatic' ? 'Automatisch' : 'Manuell'}</td>
          <td><span class="sync-status-badge ${e.status === 'success' ? 'sync-status-ok' : 'sync-status-err'}">${e.status === 'success' ? 'Erfolg' : 'Fehler'}</span></td>
          <td class="num">${esc(String(e.usersSynced ?? 0))}</td>
          <td>${e.errorMessage ? esc(e.errorMessage) : '—'}</td>
        </tr>`,
    )
    .join('');
}

function applyIntegrationForm(data) {
  const ldap = data.ldap || {};
  document.getElementById('ldap_syncEnabled').checked = Boolean(ldap.syncEnabled);
  document.getElementById('ldap_serverUrl').value = ldap.serverUrl ?? '';
  document.getElementById('ldap_searchBase').value = ldap.searchBase ?? '';
  document.getElementById('ldap_bindDn').value = ldap.bindDn ?? '';
  document.getElementById('ldap_bindPassword').value = '';
  document.getElementById('ldap_userSearchFilter').value =
    ldap.userSearchFilter || ldap.userFilter || '';
  document.getElementById('ldap_usernameAttribute').value =
    ldap.usernameAttribute ?? '';
  document.getElementById('ldap_firstNameAttribute').value =
    ldap.firstNameAttribute ?? '';
  document.getElementById('ldap_lastNameAttribute').value =
    ldap.lastNameAttribute ?? '';
  document.getElementById('ldap_syncIntervalMinutes').value = String(
    ldap.syncIntervalMinutes ?? 0,
  );

  const tv = data.teamviewer || {};
  document.getElementById('tv_bearerToken').value =
    tv.bearerToken || tv.apiToken || '';
  document.getElementById('tv_notes').value = tv.notes ?? tv.apiNotes ?? '';
}

async function run() {
  const data = await apiGet('/settings/integrations');
  let syncStatus = { lastSyncAt: null, entries: [] };
  try {
    syncStatus = await apiGet('/ldap/sync-status');
  } catch {
    /* ältere Server */
  }

  applyIntegrationForm(data);
  document.getElementById('ldap-last-sync').textContent =
    `Letzte Synchronisation: ${formatDeSyncDateTime(syncStatus.lastSyncAt)}`;
  renderSyncLog(Array.isArray(syncStatus.entries) ? syncStatus.entries : []);

  const ldapBody = document.getElementById('ldap-section-body');
  const ldapToggle = document.getElementById('ldap-toggle');
  const chev = ldapToggle.querySelector('.ldap-chevron');
  function setLdapOpen(open) {
    ldapBody.hidden = !open;
    ldapToggle.setAttribute('aria-expanded', String(open));
    chev.textContent = open ? '▲' : '▼';
  }
  ldapToggle.onclick = () => setLdapOpen(ldapBody.hidden);

  document.getElementById('btn-ldap-sync-now').onclick = async () => {
    const btn = document.getElementById('btn-ldap-sync-now');
    btn.disabled = true;
    try {
      const r = await apiPost('/ldap/sync', {});
      if (r.errors && r.errors.length) {
        alert(r.errors.join('\n'));
      } else if (r.ok === false && r.error) {
        alert(r.error);
      }
      location.reload();
    } catch (err) {
      alert(err.message || String(err));
    } finally {
      btn.disabled = false;
    }
  };

  document.getElementById('form-opt').onsubmit = async (e) => {
    e.preventDefault();
    const fd = new FormData(e.target);
    await apiPut('/settings/integrations', {
      ldap: {
        serverUrl: fd.get('ldap_serverUrl'),
        bindDn: fd.get('ldap_bindDn'),
        bindPassword: fd.get('ldap_bindPassword'),
        searchBase: fd.get('ldap_searchBase'),
        userSearchFilter: fd.get('ldap_userSearchFilter'),
        usernameAttribute: fd.get('ldap_usernameAttribute'),
        firstNameAttribute: fd.get('ldap_firstNameAttribute'),
        lastNameAttribute: fd.get('ldap_lastNameAttribute'),
        syncIntervalMinutes: fd.get('ldap_syncIntervalMinutes'),
        syncEnabled: fd.get('ldap_syncEnabled') === 'on',
      },
      teamviewer: {
        bearerToken: fd.get('tv_bearerToken'),
        notes: fd.get('tv_notes'),
      },
    });
    location.reload();
  };
}

async function init() {
  const st = await guard({ needsAdmin: true, activeNav: 'options' });
  if (!st) return;
  loadingEl.hidden = true;
  mainEl.hidden = false;
  try {
    await run();
  } catch (e) {
    if (isAuthRedirectError(e)) return;
    showError(e.message || 'Fehler');
  }
}

init();