"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.isSSR = isSSR;
exports.installIntercom = installIntercom;
exports.uninstallIntercom = uninstallIntercom;

function isSSR() {
  return typeof window === 'undefined';
}

function isLoaded() {
  return typeof window.Intercom !== 'undefined';
}

function installIntercom(intercomAppId) {
  if (isSSR()) {
    return;
  }

  if (!intercomAppId) {
    console.warn('Cannot install Intercom, app ID is missing.');
    return;
  } // Check if Intercom is already loaded/present (via GTM for example)


  if (!isLoaded()) {
    /* eslint-disable */
    window.intercomSettings = {
      app_id: intercomAppId
    };

    (function () {
      var w = window;
      var ic = w.Intercom;

      if (typeof ic === "function") {
        ic('reattach_activator');
        ic('update', w.intercomSettings);
      } else {
        var d = document;

        var i = function i() {
          i.c(arguments);
        };

        i.q = [];

        i.c = function (args) {
          i.q.push(args);
        };

        w.Intercom = i;

        var l = function l() {
          var s = d.createElement('script');
          s.type = 'text/javascript';
          s.async = true;
          s.src = 'https://widget.intercom.io/widget/' + intercomAppId;
          var x = d.getElementsByTagName('script')[0];
          x.parentNode.insertBefore(s, x);
        };

        if (document.readyState === 'complete') {
          l();
        } else if (w.attachEvent) {
          w.attachEvent('onload', l);
        } else {
          w.addEventListener('load', l, false);
        }
      }
    })();
    /* eslint-enable */

  }
}

function uninstallIntercom() {
  if (isSSR()) {
    return;
  } // Don't need to do anything if intercom is not loaded/present


  if (!isLoaded()) {
    return;
  } // Shut it down: this causes the connections to Intercom servers to be terminated


  window.Intercom('shutdown'); // Force remove the left-over Intercom iframe from DOM

  var iframe = document.getElementById('intercom-frame');

  if (iframe) {
    iframe.parentNode.removeChild(iframe);
  } // Also clean up the Intercom API


  window.Intercom = undefined;
}