/* global window, document */

(function () {
  'use strict';

  function normalizeToFileUrl(path) {
    if (!path) return '';

    // already a file URL
    if (/^file:\/\//i.test(path)) return path;

    // UNC path: \\server\share\path
    if (/^\\\\/.test(path)) {
      var p = path.replace(/^\\\\/, '');
      p = p.replace(/\\/g, '/');
      return 'file://///' + p;
    }

    // Windows drive: C:\path\to\file
    if (/^[a-zA-Z]:\\/.test(path)) {
      var drive = path[0].toUpperCase();
      var rest = path.slice(2).replace(/\\/g, '/');
      return 'file:///' + drive + ':' + rest;
    }

    // POSIX absolute: /home/user/file
    if (path[0] === '/') {
      return 'file://' + path;
    }

    // Fall back to using the provided string.
    return path;
  }

  function onClick(event) {
    var el = event.target;
    if (!el || !el.classList || !el.classList.contains('filetools-open')) return;

    var raw = el.getAttribute('data-path') || '';
    var url = normalizeToFileUrl(raw);
    console.log('Opening file URL:', url);
    if (!url) return;

    // Best-effort: browsers may block file:// navigation depending on settings.
    try {
      window.open(url, '_blank', 'noopener');
    } catch (e) {
      console.error('Failed to open file URL in new tab:', e);
      try {
        window.location.href = url;
      } catch (e2) {
        console.error('Failed to open file URL:', e2);
      }
    }
  }

  document.addEventListener('click', onClick, false);
})();