(function () {
  function read() {
    const params = new URLSearchParams(window.location.search);
    return {
      path: params.get('path') || '',
      play: params.get('play') || null
    };
  }

  function write(path, play, replace) {
    const url = new URL(window.location.href);
    path ? url.searchParams.set('path', path) : url.searchParams.delete('path');
    play ? url.searchParams.set('play', play) : url.searchParams.delete('play');
    const next = `${url.pathname}${url.search}`;
    window.history[replace ? 'replaceState' : 'pushState']({}, '', next);
  }

  function fileName(path) {
    const parts = path.split('/');
    return parts[parts.length - 1] || path;
  }

  window.LanPlayLocation = { read, write, fileName };
})();