/**
 * ============LICENSE_START========================================================================
 * ONAP : ccsdk feature sdnr wt odlux
 * =================================================================================================
 * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
 * =================================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 * ============LICENSE_END==========================================================================
 */
import { IActionHandler } from '../flux/action';
import { UpdateAuthentication } from '../actions/authentication';

import { User } from '../models/authentication';

import { onLogin, onLogout } from '../services/applicationApi';
import { startWebsocketSession, endWebsocketSession } from '../services/notificationService';

export interface IAuthenticationState {
  user?: User;
}

const initialToken = localStorage.getItem("userToken");

if (initialToken !== null) {
  startWebsocketSession();
}

const authenticationStateInit: IAuthenticationState = {
  user: initialToken && User.fromString(initialToken) || undefined
};

export const authenticationStateHandler: IActionHandler<IAuthenticationState> = (state = authenticationStateInit, action) => {
  if (action instanceof UpdateAuthentication) {

    const user = action.bearerToken && new User(action.bearerToken) || undefined;
    if (user) {
      localStorage.setItem("userToken", user.toString());
      startWebsocketSession();
      onLogin();
    } else {
      localStorage.removeItem("userToken");
      endWebsocketSession();
      onLogout();
    }

    state = {
      ...state,
      user
    };
  }

  return state;
};