(function () {
  'use strict';

  document.body.addEventListener('htmx:afterSwap', function (event) {
    var target = event.detail.target;
    if (!target) return;
    if (target.id === 'reference-verse') return scrollToHash();
    if (target.id === 'content') return land();
  });

  document.body.addEventListener('htmx:historyRestore', function () {
    land();
  });

  function hashTarget() {
    if (!location.hash) return null;
    return document.getElementById(decodeURIComponent(location.hash.slice(1)));
  }

  function jumpTo(el) {
    el.scrollIntoView({ block: 'start', behavior: 'instant' });
  }

  function jumpToTop() {
    window.scrollTo({ top: 0, behavior: 'instant' });
  }

  function scrollToHash() {
    var el = hashTarget();
    if (el) jumpTo(el);
  }

  function land() {
    var el = hashTarget();
    if (el) jumpTo(el);
    else jumpToTop();
  }

  document.addEventListener('DOMContentLoaded', function () {
    scrollToHash();

    if ('serviceWorker' in navigator) {
      navigator.serviceWorker.register('sw.js').catch(function () {});
    }
  });
})();