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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};

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

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

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

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

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 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);
       }

    }