// TODO: This is a candidate to be added to the common client library
import PubSub from 'pubsub-js';
import { Logger } from '../common/logger';

export class ConferenceState {
    private isInVideoConference = false;
    private _isInAudioConference = false;
    private _isVideoConferenceFullScreen = false;
    private logger = Logger.getInstance();

    constructor() {
        this.resetState();

        PubSub.subscribe('onConferenceViewState', (msg, data) => {
            this.processConferenceNotification(data);
        });

        PubSub.subscribe('onChatWindowClosed', (msg, data) => {
            this.resetState();
        });
    }

    public get isVideoConferenceFullScreen(): boolean {
        return this._isVideoConferenceFullScreen;
    }

    public get isInAudioConference(): boolean {
        return this._isInAudioConference;
    }

    public resetState() {
        this.isInVideoConference = false;
        this._isInAudioConference = false;
        this._isVideoConferenceFullScreen = false;
    }

    // TODO: any
    public setConferenceState(stateObject: any) {
        if (stateObject.hasOwnProperty('isInVideoConference')) {
            if (stateObject.isInVideoConference !== this.isInVideoConference) {
                PubSub.publish('onConferenceStateChange', { isInVideoConference: stateObject.isInVideoConference });
                this.isInVideoConference = stateObject.isInVideoConference;
            }
        }

        if (stateObject.hasOwnProperty('isVideoConferenceFullScreen')) {
            if (stateObject.isVideoConferenceFullScreen !== this._isVideoConferenceFullScreen) {
                PubSub.publish('onConferenceStateChange', {
                    isVideoConferenceFullScreen: stateObject.isVideoConferenceFullScreen
                });
                this._isVideoConferenceFullScreen = stateObject.isVideoConferenceFullScreen;
            }
        }

        if (stateObject.hasOwnProperty('isInAudioConference')) {
            if (stateObject.isInAudioConference !== this._isInAudioConference) {
                PubSub.publish('onConferenceStateChange', { isInAudioConference: stateObject.isInAudioConference });
                this._isInAudioConference = stateObject.isInAudioConference;
            }
        }
    }

    // TODO: any
    public processConferenceNotification(data: any) {
        if (!data) {
            this.logger.logError('WebViewWindowController.processConferenceNotification(): No data.');
            return;
        }

        if (!data.mode) {
            this.logger.logError('WebViewWindowController.processConferenceNotification(): No data mode.');
            return;
        }

        this.logger.logMessage(
            'ConferenceState.processConferenceNotification: Conference notification: ' + JSON.stringify(data)
        );
        if (data.mode === 'Start') {
            if (data.type === 'Video') {
                this.setConferenceState({ isInVideoConference: true });
                this.setConferenceState({ isVideoConferenceFullScreen: data.view === 'Full Screen' });
            } else if (data.type === 'Audio') {
                this.setConferenceState({ isInAudioConference: true });
            }
        } else if (data.mode === 'End') {
            if (data.type === 'Video') {
                this.setConferenceState({ isInVideoConference: false });
                this.setConferenceState({ isVideoConferenceFullScreen: false });
            } else if (data.type === 'Audio') {
                this.setConferenceState({ isInAudioConference: false });
            }
        }

        this.logger.logMessage(
            'ConferenceState.processConferenceNotification: Current conference state: ' + JSON.stringify(this)
        );
    }
}