// mcias.js — HTMX event wiring for the MCIAS web UI.

// Show server error responses in the global #htmx-error-banner.
//
// HTMX 2.x fires htmx:responseError for 4xx/5xx responses and does not swap
// the body into the target by default.  The server's renderError() always
// returns a <div class="alert alert-error"> fragment whose message is
// HTML-escaped server-side, so setting innerHTML here is safe.
document.body.addEventListener('htmx:responseError', function (evt) {
  var banner = document.getElementById('htmx-error-banner');
  if (!banner) { return; }
  var body = (evt.detail.xhr && evt.detail.xhr.responseText) || 'An unexpected error occurred.';
  banner.innerHTML = body;
  banner.style.display = '';
  banner.scrollIntoView({ behavior: 'instant', block: 'nearest' });
});

// Clear the error banner whenever a successful HTMX swap completes so
// stale errors do not persist after the user corrects their input.
document.body.addEventListener('htmx:afterSwap', function () {
  var banner = document.getElementById('htmx-error-banner');
  if (banner) {
    banner.style.display = 'none';
    banner.innerHTML = '';
  }
});