/* HotelSync Widget Loader — https://hotelsync.ru */
(function () {
  var s = document.currentScript || (function () {
    var t = document.getElementsByTagName('script');
    return t[t.length - 1];
  })();

  var rawUrl = s.getAttribute('data-url') || '';
  var mode   = s.getAttribute('data-mode') || 'floating';
  var btn    = s.getAttribute('data-btn') || 'Забронировать';
  var color  = s.getAttribute('data-color') || '#4F46E5';
  var cls    = s.getAttribute('data-class') || 'hotelsync-book';

  var url = rawUrl + (rawUrl.indexOf('?') >= 0 ? '&' : '?') + 'embed=true';

  function init() {
    /* ── Overlay ── */
    var overlay = document.createElement('div');
    overlay.style.cssText = [
      'display:none',
      'position:fixed', 'inset:0',
      'background:rgba(0,0,0,.6)',
      'backdrop-filter:blur(6px)',
      '-webkit-backdrop-filter:blur(6px)',
      'z-index:99998',
      'align-items:center',
      'justify-content:center',
      'padding:16px',
      'box-sizing:border-box',
    ].join(';');

    /* ── Dialog — explicit height so iframe fills it ── */
    var dialog = document.createElement('div');
    dialog.style.cssText = [
      'position:relative',
      'width:100%',
      'max-width:480px',
      'height:90vh',
      'max-height:720px',
      'border-radius:20px',
      'overflow:hidden',
      'box-shadow:0 24px 64px rgba(0,0,0,.45)',
      'background:#fff',
    ].join(';');

    /* ── Close button — top-right corner of dialog ── */
    var closeBtn = document.createElement('button');
    closeBtn.innerHTML = '✕';
    closeBtn.title = 'Закрыть';
    closeBtn.style.cssText = [
      'position:absolute', 'top:14px', 'right:14px', 'z-index:10',
      'width:34px', 'height:34px', 'border-radius:50%',
      'background:rgba(255,255,255,.95)',
      'color:#374151',
      'border:1px solid rgba(0,0,0,.12)',
      'cursor:pointer',
      'font-size:15px', 'font-weight:700',
      'display:flex', 'align-items:center', 'justify-content:center',
      'box-shadow:0 2px 8px rgba(0,0,0,.12)',
      'transition:background .15s,transform .1s',
    ].join(';');
    closeBtn.onmouseenter = function () { closeBtn.style.transform = 'scale(1.1)'; };
    closeBtn.onmouseleave = function () { closeBtn.style.transform = 'scale(1)'; };
    closeBtn.onclick = function () { overlay.style.display = 'none'; };

    /* ── Iframe fills dialog completely ── */
    var iframe = document.createElement('iframe');
    iframe.src = url;
    iframe.setAttribute('allow', 'payment');
    iframe.style.cssText = [
      'position:absolute', 'inset:0',
      'width:100%', 'height:100%',
      'border:none',
    ].join(';');

    dialog.appendChild(iframe);
    dialog.appendChild(closeBtn);   // on top of iframe
    overlay.appendChild(dialog);

    overlay.addEventListener('click', function (e) {
      if (e.target === overlay) overlay.style.display = 'none';
    });
    document.addEventListener('keydown', function (e) {
      if (e.key === 'Escape') overlay.style.display = 'none';
    });

    document.body.appendChild(overlay);
    window.hsOpenWidget = function () { overlay.style.display = 'flex'; };

    /* ── Floating button ── */
    if (mode === 'floating') {
      var fab = document.createElement('button');
      fab.textContent = btn;
      fab.style.cssText = [
        'position:fixed', 'bottom:24px', 'right:24px',
        'background:' + color, 'color:#fff',
        'border:none', 'padding:15px 28px',
        'border-radius:50px',
        'font-size:15px', 'font-family:inherit', 'font-weight:700',
        'letter-spacing:.01em',
        'cursor:pointer', 'z-index:99997',
        'box-shadow:0 6px 24px rgba(0,0,0,.28)',
        'transition:transform .15s,box-shadow .15s',
      ].join(';');
      fab.onmouseenter = function () {
        fab.style.transform = 'translateY(-2px)';
        fab.style.boxShadow = '0 10px 32px rgba(0,0,0,.35)';
      };
      fab.onmouseleave = function () {
        fab.style.transform = 'none';
        fab.style.boxShadow = '0 6px 24px rgba(0,0,0,.28)';
      };
      fab.onclick = function () { window.hsOpenWidget(); };
      document.body.appendChild(fab);
    }

    /* ── Class trigger ── */
    if (mode === 'trigger') {
      document.addEventListener('click', function (e) {
        var el = e.target;
        while (el) {
          if (el.classList && el.classList.contains(cls)) {
            e.preventDefault();
            window.hsOpenWidget();
            return;
          }
          el = el.parentElement;
        }
      });
    }
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', init);
  } else {
    init();
  }
})();