(function(root, factory) {
  const api = factory();
  if (typeof module === 'object' && module.exports) module.exports = api;
  else root.createIssueFilingReview = api;
})(typeof self !== 'undefined' ? self : this, function() {
  'use strict';

  const INTENT_LABELS = {
    'create-and-assign': 'Create & assign to me',
    'create-and-start': 'Create & start',
    'follow-up-and-next': 'Create follow-up & next',
  };

  function clone(value) {
    if (typeof structuredClone === 'function') return structuredClone(value);
    return JSON.parse(JSON.stringify(value));
  }

  function create(options) {
    let reviewed = null;
    let trigger = null;
    let busy = false;

    function close() {
      options.sheet.hidden = true;
      const previousTrigger = trigger;
      trigger = null;
      reviewed = null;
      busy = false;
      options.confirmButton.disabled = false;
      previousTrigger?.focus();
    }

    function render(payload) {
      const draft = payload.draft;
      options.repository.textContent = draft.repository || 'No repository';
      options.intent.textContent = INTENT_LABELS[payload.intent] || payload.intent;
      options.title.textContent = draft.title;
      options.body.textContent = draft.body || 'No note provided.';
      const labels = (draft.labels || []).map(label => typeof label === 'string' ? label : label.name);
      const milestone = draft.milestone?.title || draft.milestoneTitle || 'No milestone';
      const dueDate = draft.dueDate || draft.due_date || 'No due date';
      options.metadata.textContent = [
        labels.length ? 'Labels: ' + labels.join(', ') : 'No labels',
        'Milestone: ' + milestone,
        'Due: ' + dueDate,
        'Assigned to you',
      ].join(' · ');
      const attachments = (draft.attachments || (draft.attachment ? [draft.attachment] : [])).filter(Boolean);
      options.evidenceList.replaceChildren(...attachments.map((attachment, index) => {
        const item = options.document.createElement('li');
        item.textContent = (index + 1) + '. ' + (attachment.filename || 'Screenshot') +
          (attachment.note ? ' — ' + attachment.note : '');
        return item;
      }));
    }

    function open(payload, opener) {
      reviewed = clone(payload);
      trigger = opener || null;
      busy = false;
      options.confirmButton.disabled = false;
      render(reviewed);
      options.sheet.hidden = false;
      options.backButton.focus();
    }

    options.backButton.addEventListener('click', close);
    options.confirmButton.addEventListener('click', async () => {
      if (!reviewed || busy) return;
      busy = true;
      options.confirmButton.disabled = true;
      try {
        await options.onConfirm(reviewed);
        close();
      } catch (error) {
        busy = false;
        options.confirmButton.disabled = false;
        if (options.status) options.status.textContent = error.message;
        options.confirmButton.focus();
      }
    });
    options.document.addEventListener('keydown', event => {
      if (!options.sheet.hidden && event.key === 'Escape' && !busy) {
        event.preventDefault();
        close();
      }
    });
    return { close, open };
  }

  return create;
});