"use strict";

require("core-js/modules/es6.object.define-property");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.createDecorator = void 0;

require("core-js/modules/es7.symbol.async-iterator");

require("core-js/modules/es6.symbol");

require("core-js/modules/es6.array.is-array");

require("core-js/modules/es6.array.for-each");

require("core-js/modules/es6.regexp.match");

require("core-js/modules/web.dom.iterable");

require("core-js/modules/es6.array.iterator");

require("core-js/modules/es7.object.entries");

require("core-js/modules/es6.array.map");

var _global = require("global");

var _isEqual = _interopRequireDefault(require("lodash/isEqual"));

var _addons = _interopRequireDefault(require("@storybook/addons"));

var _coreEvents = _interopRequireDefault(require("@storybook/core-events"));

var _actions = _interopRequireDefault(require("./actions"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance"); }

function _iterableToArrayLimit(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

var lastSubscription;
var lastArgs;
var delegateEventSplitter = /^(\S+)\s*(.*)$/;
var isIE = _global.Element != null && !_global.Element.prototype.matches;
var matchesMethod = isIE ? 'msMatchesSelector' : 'matches';

var root = _global.document && _global.document.getElementById('root');

var hasMatchInAncestry = function hasMatchInAncestry(element, selector) {
  if (element[matchesMethod](selector)) {
    return true;
  }

  var parent = element.parentElement;

  if (!parent) {
    return false;
  }

  return hasMatchInAncestry(parent, selector);
};

var createHandlers = function createHandlers(actionsFn) {
  for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
    args[_key - 1] = arguments[_key];
  }

  var actionsObject = actionsFn.apply(void 0, args);
  return Object.entries(actionsObject).map(function (_ref) {
    var _ref2 = _slicedToArray(_ref, 2),
        key = _ref2[0],
        action = _ref2[1];

    // eslint-disable-next-line no-unused-vars
    var _key$match = key.match(delegateEventSplitter),
        _key$match2 = _slicedToArray(_key$match, 3),
        _ = _key$match2[0],
        eventName = _key$match2[1],
        selector = _key$match2[2];

    return {
      eventName: eventName,
      handler: function handler(e) {
        if (!selector || hasMatchInAncestry(e.target, selector)) {
          action(e);
        }
      }
    };
  });
};

var actionsSubscription = function actionsSubscription() {
  for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
    args[_key2] = arguments[_key2];
  }

  if (!(0, _isEqual.default)(args, lastArgs)) {
    lastArgs = args;
    var handlers = createHandlers.apply(void 0, args);

    lastSubscription = function lastSubscription() {
      handlers.forEach(function (_ref3) {
        var eventName = _ref3.eventName,
            handler = _ref3.handler;
        return root.addEventListener(eventName, handler);
      });
      return function () {
        return handlers.forEach(function (_ref4) {
          var eventName = _ref4.eventName,
              handler = _ref4.handler;
          return root.removeEventListener(eventName, handler);
        });
      };
    };
  }

  return lastSubscription;
};

var createDecorator = function createDecorator(actionsFn) {
  return function () {
    for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
      args[_key3] = arguments[_key3];
    }

    return function (story) {
      if (root != null) {
        _addons.default.getChannel().emit(_coreEvents.default.REGISTER_SUBSCRIPTION, actionsSubscription.apply(void 0, [actionsFn].concat(args)));
      }

      return story();
    };
  };
};

exports.createDecorator = createDecorator;

var _default = createDecorator(_actions.default);

exports.default = _default;