/**
 * Helpdesk ticket detail page — async communication aside.
 *
 * Loads the ticket communication feed via fetch and renders
 * it in the aside panel, matching the debitor detail pattern.
 */
import {
  renderCommunicationError,
  renderCommunicationFeed,
  renderCommunicationHint,
} from './helpdesk-communication.js';

const container = document.querySelector('.app-details-container[data-ticket-no]');
if (container) {
  init(container);
}

function init(container) {
  const ticketNo = container.dataset.ticketNo || '';
  const communicationUrl = container.dataset.ticketCommunicationUrl || '';
  const fileDownloadUrl = container.dataset.fileDownloadUrl || '';

  if (!ticketNo || !communicationUrl) return;

  // i18n
  const i18nEl = document.getElementById('helpdesk-ticket-i18n');
  const i18n = i18nEl ? JSON.parse(i18nEl.textContent) : {};
  const t = (key) => i18n[key] || key;

  function showLoading(id) {
    const el = document.getElementById(id);
    if (el) el.hidden = false;
  }

  function hideLoading(id) {
    const el = document.getElementById(id);
    if (el) el.hidden = true;
  }

  function showContent(id) {
    const el = document.getElementById(id);
    if (el) el.hidden = false;
  }

  async function loadCommunication(refresh = false) {
    const feedEl = document.getElementById('ticket-communication-feed');
    const loadingEl = document.getElementById('ticket-communication-loading');
    const contentEl = document.getElementById('ticket-communication-content');
    if (!feedEl || !loadingEl || !contentEl) return;

    if (contentEl) contentEl.hidden = true;
    showLoading('ticket-communication-loading');

    try {
      const params = new URLSearchParams({ ticketNo });
      if (refresh) params.set('refresh', '1');
      const response = await fetch(communicationUrl + '?' + params.toString(), { credentials: 'same-origin' });
      const data = await response.json();

      hideLoading('ticket-communication-loading');
      showContent('ticket-communication-content');

      if (!data.ok) {
        feedEl.innerHTML = renderCommunicationError(t('Could not load communication history.'));
        return;
      }

      let html = '';
      if (
        data.meta
        && data.meta.soap_used === false
        && data.meta.fallback_used === true
        && data.meta.soap_error
      ) {
        html += renderCommunicationHint(t('Live communication unavailable, showing activity fallback.'));
      }
      html += renderCommunicationFeed(data.entries || [], {
        t,
        emptyMessage: 'No communication found.',
        showTicketNo: false,
        fileDownloadUrl,
      });

      feedEl.innerHTML = html;
    } catch {
      hideLoading('ticket-communication-loading');
      showContent('ticket-communication-content');
      feedEl.innerHTML = renderCommunicationError(t('Could not load communication history.'));
    }
  }

  const refreshButton = container.querySelector('button[name="ticket-refresh"]');
  if (refreshButton) {
    refreshButton.addEventListener('click', () => loadCommunication(true));
  }

  loadCommunication();
}