"use strict";

function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;
var _redux = require("redux");
var _AbstractStoreService2 = _interopRequireDefault(require("./AbstractStoreService"));
var _Deferred = _interopRequireDefault(require("../../Utils/Async/Deferred"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { "default": e }; }
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function asyncGeneratorStep(n, t, e, r, o, a, c) { try { var i = n[a](c), u = i.value; } catch (n) { return void e(n); } i.done ? t(u) : Promise.resolve(u).then(r, o); }
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function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
function _defineProperties(e, r) { for (var t = 0; t < r.length; t++) { var o = r[t]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o); } }
function _createClass(e, r, t) { return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", { writable: !1 }), e; }
function _inherits(t, e) { if ("function" != typeof e && null !== e) throw new TypeError("Super expression must either be null or a function"); t.prototype = Object.create(e && e.prototype, { constructor: { value: t, writable: !0, configurable: !0 } }), Object.defineProperty(t, "prototype", { writable: !1 }), e && _setPrototypeOf(t, e); }
function _setPrototypeOf(t, e) { return _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function (t, e) { return t.__proto__ = e, t; }, _setPrototypeOf(t, e); }
function _createSuper(t) { var r = _isNativeReflectConstruct(); return function () { var e, o = _getPrototypeOf(t); if (r) { var s = _getPrototypeOf(this).constructor; e = Reflect.construct(o, arguments, s); } else e = o.apply(this, arguments); return _possibleConstructorReturn(this, e); }; }
function _possibleConstructorReturn(t, e) { if (e && ("object" == _typeof(e) || "function" == typeof e)) return e; if (void 0 !== e) throw new TypeError("Derived constructors may only return object or undefined"); return _assertThisInitialized(t); }
function _assertThisInitialized(e) { if (void 0 === e) throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); return e; }
function _isNativeReflectConstruct() { try { var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); } catch (t) {} return (_isNativeReflectConstruct = function _isNativeReflectConstruct() { return !!t; })(); }
function _getPrototypeOf(t) { return _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function (t) { return t.__proto__ || Object.getPrototypeOf(t); }, _getPrototypeOf(t); }
function _defineProperty(e, r, t) { return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, { value: t, enumerable: !0, configurable: !0, writable: !0 }) : e[r] = t, e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
function _createForOfIteratorHelper(r, e) { var t = "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (!t) { if (Array.isArray(r) || (t = _unsupportedIterableToArray(r)) || e && r && "number" == typeof r.length) { t && (r = t); var _n = 0, F = function F() {}; return { s: F, n: function n() { return _n >= r.length ? { done: !0 } : { done: !1, value: r[_n++] }; }, e: function e(r) { throw r; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var o, a = !0, u = !1; return { s: function s() { t = t.call(r); }, n: function n() { var r = t.next(); return a = r.done, r; }, e: function e(r) { u = !0, o = r; }, f: function f() { try { a || null == t["return"] || t["return"](); } finally { if (u) throw o; } } }; }
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function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
function StoreObserver() {
  var listeners = [];
  var store;
  var currentState;
  var unsubscribe;

  /**
   * Stores the current state, calls all the listeners which has a new state value
   * @private
   */
  function handleChange() {
    var nextState = store.getState();
    var prevState = currentState;
    currentState = nextState;
    var _iterator = _createForOfIteratorHelper(listeners),
      _step;
    try {
      for (_iterator.s(); !(_step = _iterator.n()).done;) {
        var listener = _step.value;
        var pv = listener.select(prevState);
        var cv = listener.select(currentState);
        if (!(listener.isEqualFunction ? listener.isEqualFunction(pv, cv) : pv === cv)) {
          listener.onChange(cv, pv, listener.remove);
        }
      }
    } catch (err) {
      _iterator.e(err);
    } finally {
      _iterator.f();
    }
  }

  /**
   * Sets the store and subscribes the handleChange method
   * @param store
   */
  this.setStore = function (theStore) {
    store = theStore;

    // the subscribe function returns the call which can remove the listener, it is stored for future usage
    unsubscribe = store.subscribe(handleChange);

    // set the initial currentState
    currentState = store.getState();
  };

  /**
   * Adds a listener to the StoreObserver
   * @param select
   * @param onChange
   * @param isEqualFunction
   */
  this.addListener = function (select, onChange, isEqualFunction) {
    var listener = {
      select: select,
      onChange: onChange,
      isEqualFunction: isEqualFunction
    };
    listener.remove = function () {
      var index = listeners.indexOf(listener);
      if (index > -1) {
        listeners.splice(index, 1);
      }
    };
    listeners.push(listener);
    return listener;
  };

  /**
   * Disconnects from the store, so the added listener will not be notified anymore
   */
  this.dispose = function () {
    if (unsubscribe) {
      unsubscribe();
      currentState = null;
      store = null;
      unsubscribe = null;
    }
    // should the listeners list be cleared?
  };
}
var StoreService = exports["default"] = /*#__PURE__*/function (_AbstractStoreService) {
  _inherits(StoreService, _AbstractStoreService);
  var _super = _createSuper(StoreService);
  function StoreService() {
    var _this;
    _classCallCheck(this, StoreService);
    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }
    _this = _super.call.apply(_super, [this].concat(args));
    _defineProperty(_assertThisInitialized(_this), "store", null);
    _defineProperty(_assertThisInitialized(_this), "storeObserver", new StoreObserver());
    _defineProperty(_assertThisInitialized(_this), "storeDeferred", new _Deferred["default"]());
    return _this;
  }
  _createClass(StoreService, [{
    key: "setStore",
    value: function setStore(store) {
      this.store = store;
      this.storeDeferred.resolve(store);
      this.storeObserver.setStore(store);
    }
  }, {
    key: "dispatch",
    value: function dispatch() {
      var _this$store;
      if (!this.store) {
        throw new Error('StoreService: store must be set first! Use the setStore(store) function!');
      }
      return (_this$store = this.store).dispatch.apply(_this$store, arguments);
    }
  }, {
    key: "state",
    get: function get() {
      if (!this.store) {
        throw new Error('StoreService: store must be set first! Use the setStore(store) function!');
      }
      return this.store.getState();
    }
  }, {
    key: "observeStore",
    value: function observeStore(select, onChange, isEqualFunction) {
      this.storeObserver.addListener(select, onChange, isEqualFunction);
    }
  }, {
    key: "addMiddleware",
    value: function () {
      var _addMiddleware = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee(middleware) {
        var store, middlewareAPI;
        return _regeneratorRuntime().wrap(function _callee$(_context) {
          while (1) switch (_context.prev = _context.next) {
            case 0:
              _context.next = 2;
              return this.storeDeferred.promise;
            case 2:
              store = _context.sent;
              middlewareAPI = {
                getState: store.getState,
                dispatch: function dispatch(action) {
                  return store.dispatch(action);
                }
              };
              store.dispatch = (0, _redux.compose)(middleware(middlewareAPI))(store.dispatch);
            case 5:
            case "end":
              return _context.stop();
          }
        }, _callee, this);
      }));
      function addMiddleware(_x) {
        return _addMiddleware.apply(this, arguments);
      }
      return addMiddleware;
    }()
  }]);
  return StoreService;
}(_AbstractStoreService2["default"]);