// modification of suggestion by chatgpt - see README.txt

// Handle swap failures where response exists
document.body.addEventListener('htmx:beforeSwap', function (evt) {
  if (evt.detail.failed) {
    // swap failure (could be bad target or invalid response)
    console.warn("Swap failed:", evt.detail);
        
    const xhr = evt.detail.xhr;
    if (xhr && xhr.responseText) {
      const fallback = document.getElementById('fallback') || document.body;
      fallback.insertAdjacentHTML(
        'beforeend',
        "<div style='color:blue;'>[Recovered beforeSwap] " + xhr.responseText + "</div>"
      );
    }
        
    // prevent htmx from throwing its own error
    evt.preventDefault();
  }
});
// Handle missing targets with a generic message
document.body.addEventListener('htmx:targetError', function (evt) {
  const target = evt.detail.target; // the actual DOM node
  // console.warn(target);
  const initiator = evt.detail.elt; // the element that triggered request
  // console.warn(initiator);
  let targetName;
  if (target) { // this does not work - see below 'if !targetname' block
    // target exists but swap failed for another reason
    targetName = target.id ? `#${target.id}` : target.tagName;
  } else {
    // target truly missing → try to read from hx-target attribute
    targetName = initiator.getAttribute('hx-target') || '(unknown)';
  }
  // added because above if/else fails due to no target.id or target.tagName
  if (!targetName) {
      targetName = initiator.getAttribute('hx-target') || '(unknown)';
  }
  // console.warn(targetName);
  console.warn("Target error, no response body available here:", evt.detail);
  // you can still insert a generic message
  const message = document.getElementById('hx-error') || document.body;
  message.insertAdjacentHTML(
    'beforeend',
    `<div style='color:red;'>[ERROR] Could not swap into target: "${targetName}",
        check it exists in DOM</div>`
  );
  evt.preventDefault();
});