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path: root/sdnr/wt-odlux/odlux/framework/src/services/broadcastService.ts
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/**
 * ============LICENSE_START========================================================================
 * ONAP : ccsdk feature sdnr wt odlux
 * =================================================================================================
 * Copyright (C) 2021 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 { setGeneralSettingsAction } from '../actions/settingsAction';
import { loginUserAction, logoutUser } from '../actions/authentication';
import { ReplaceAction } from '../actions/navigationActions';
import { User } from '../models/authentication';
import { ApplicationStore } from '../store/applicationStore';

type Broadcaster = {
  channel: BroadcastChannel;
  key: String;
};

type AuthTypes = 'login' | 'logout';
export type AuthMessage = {
  key: AuthTypes;
  data: any;
};

type SettingsType = 'general';
export type SettingsMessage = {
  key: SettingsType;
  enableNotifications: boolean;
  user: string;
};

const channels: Broadcaster[] = [];
let store: ApplicationStore | null = null;

export const saveChannel = (channel: BroadcastChannel, channelName: string) => {
  channels.push({ channel: channel, key: channelName });
};

const createSettingsBroadcastChannel = () => {

  const name = 'odlux_settings';
  const bc: BroadcastChannel = new BroadcastChannel(name);
  channels.push({ channel: bc, key: name });

  bc.onmessage = (eventMessage: MessageEvent<SettingsMessage>) => {
    console.log(eventMessage);

    if (eventMessage.data.key === 'general') {

      if (store?.state.framework.authenticationState.user) {
        const data = eventMessage.data;
        if (store.state.framework.authenticationState.user.user === data.user) {
          store?.dispatch(setGeneralSettingsAction(data.enableNotifications));
        }
      }
    }
  };
};

const createAuthBroadcastChannel = () => {
  const name = 'odlux_auth';
  const bc: BroadcastChannel = new BroadcastChannel(name);
  channels.push({ channel: bc, key: name });

  bc.onmessage = (eventMessage: MessageEvent<AuthMessage>) => {
    console.log(eventMessage);

    if (eventMessage.data.key === 'login') {
      if (!store?.state.framework.authenticationState.user) {
        const initialToken = localStorage.getItem('userToken');
        if (initialToken) {
          store?.dispatch(loginUserAction(User.fromString(initialToken)));
          store?.dispatch(new ReplaceAction('/'));
        }
      }
    } else if (eventMessage.data.key === 'logout') {

      if (store?.state.framework.authenticationState.user) {
        store?.dispatch(logoutUser());
        store?.dispatch(new ReplaceAction('/login'));
      }
    }
  };
};

export const startBroadcastChannel = (applicationStore: ApplicationStore) => {
  store = applicationStore;

  // might decide to use one general broadcast channel with more keys in the future
  createAuthBroadcastChannel();
  createSettingsBroadcastChannel();
};

export const getBroadcastChannel = (channelName: string) => {
  const foundChannel = channels.find(s => s.key === channelName);
  return foundChannel?.channel;
};

export const sendMessage = (data: any, channel: string) => {
  const foundChannel = channels.find(s => s.key === channel);
  if (foundChannel) {
    foundChannel.channel.postMessage(data);
  }
};