# All files / src/lib/components/room room.component.ts

30.71% Statements 43/140
20% Branches 19/95
25% Functions 9/36
29.45% Lines 38/129

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     import { Component, EventEmitter, HostListener, Input, OnInit, Output } from '@angular/core';
    import { Subscription } from 'rxjs';
    impoIrt { Subscriber, Session, StreamEvent, StreamPropertyChangedEvent, SessionDisconnectedEvent, ConnectionEvent } from 'openvidu-browser';

    import { VideoType } from '../../models/video-type.model';
    import { ILogger } from '../../models/logger.model';
    import { UserName } from '../../models/username.model';

    import { RemoteUserService } from '../../services/remote-user/remote-user.service';
    import { ChatService } from '../../services/chat/chat.service';
    import { LocalUserService } from '../../services/local-user/local-user.service';
    import { LoggerService } from '../../services/logger/logger.service';
    import { WebrtcService } from '../../services/webrtc/webrtc.service';
    import { TokenService } from '../../services/token/token.service';
    import { PlatformService } from '../../services/platform/platform.service';
    import { LayoutService } from '../../services/layout/layout.service';
    import { ActionService } from '../../services/action/action.service';
    import { Signal } from '../../models/signal.model';

    @Component({
    	selector: 'ov-room',
    	templateUrl: './room.component.html',
    	styleUrls: ['./room.component.css']
    })
    export class RoomComponent implements OnInit {
    	@Input() tokens: { webcam: string; screen: string };
    	@Output() _session = new EventEmitter<any>();
    	@Output() _publisher = new EventEmitter<any>();
    	@Output() _error = new EventEmitter<any>();

    	session: Session;
    	sessionScreen: Session;
    	participantsNameList: UserName[] = [];
    	private log: ILogger;
    	private remoteUserNameSubscription: Subscription;

    	constructor(
    		private actionService: ActionService,
    		private remoteUserService: RemoteUserService,
    		private openViduWebRTCService: WebrtcService,
    		private localUserService: LocalUserService,
    		private loggerSrv: LoggerService,
    		private chatService: ChatService,
    		private oVLayout: LayoutService,
    		private tokenService: TokenService,
    		private platformService: PlatformService
    	) {
    		this.log = this.loggerSrv.get('RoomComponent');
    	}

    	@HostListener('window:beforeunload')
    	beforeunloadHandler() {
    		this.leaveSession();
    	}

    	async ngOnInit() {
    		this.session = this.openViduWebRTCService.getWebcamSession();
    		this.sessionScreen = this.openViduWebRTCService.getScreenSession();
    		this.subscribeToConnectionCreatedAndDestroyed();
    		this.subscribeToStreamCreated();
    		this.subscribeToStreamDestroyed();
    		this.subscribeToStreamPropertyChange();
    		this.subscribeToNicknameChanged();
    		this.chatService.subscribeToChat();
    		this.subscribeToReconnection();

    		this.tokenService.setWebcamToken(this.tokens.webcam);
    		this.tokenService.setScreenToken(this.tokens.screen);

    		await this.connectToSession();
    		// Workaround, firefox does not have audio when publisher join with muted camera
    		if (this.platformService.isFirefox() && !this.localUserService.hasWebcamVideoActive()) {
    			this.openViduWebRTCService.publishWebcamVideo(true);
    			this.openViduWebRTCService.publishWebcamVideo(false);
    		}

    		this._session.emit(this.session);
    	}

    	ngOnDestroy() {
    		// Reconnecting session is received in Firefox
    		// To Iavoid 'Connection lost' message uses session.off()
    		this.session?.off('reconnecting');
    		this.remoteUserService.clear();
    		this.oVLayout.clear();
    		this.localUserService.clear();
    		this.session = null;
    		this.sessionScreen = null;
    		if (this.remoteUserNameSubscription) this.remoteUserNameSubscription.unsubscribe();
    	}

    	leaveSession() {
    		this.log.d('Leaving session...');
    		this.openViduWebRTCService.disconnect();
    	}

    	//TODO Refactor connection methods move them to a service
    	private async connectToSession(): Promise<void> {
    		if (this.localUserService.areBothConnected()) {
    			await this.connectWebcamSession();
    			await this.connectScreenSession();
    			await this.openViduWebRTCService.publishWebcamPublisher();
    			await this.openViduWebRTCService.publishScreenPublisher();
    		} else if (this.localUserService.isOnlyScreenConnected()) {
    			await this.connectScreenSession();
    			await this.openViduWebRTCService.publishScreenPublisher();
    		} else {
    			await this.connectWebcamSession();
    			await this.openViduWebRTCService.publishWebcamPublisher();
    		}

    		this.oVLayout.update();
    	}

    	//TODO Refactor connection methods move them to a service
    	private async connectScreenSession() {
    		try {
    			await this.openViduWebRTCService.connectScreenSession(this.tokenService.getScreenToken());
    		} catch (error) {
    			this._error.emit({ error: error.error, messgae: error.message, code: error.code, status: error.status });
    			this.log.e('There was an error connecting to the session:', error.code, error.message);
    			this.actionService.openDialog('There was an error connecting to the session:', error?.error || error?.message);
    		}
    	}

    	//TODO Refactor connection methods move them to a service
    	private async connectWebcamSession() {
    		try {
    			await this.openViduWebRTCService.connectWebcamSession(this.tokenService.getWebcamToken());
    		} catch (error) {
    			this._error.emit({ error: error.error, messgae: error.message, code: error.code, status: error.status });
    			this.log.e('There was an error connecting to the session:', error.code, error.message);
    			this.actionService.openDialog('There was an error connecting to the session:', error?.error || error?.message);
    		}
    	}

    	private subscribeToConnectionCreatedAndDestroyed() {
    		this.session.on('connectionCreated', (event: ConnectionEvent) => {
    			if (this.openViduWebRTCService.isMyOwnConnection(event.connection.connectionId)) {
    				return;
    			}

    			const nickname: string = this.remoteUserService.getNicknameFromConnectionData(event.connection.data);
    			this.remoteUserService.addUserName(event);

    			// Adding participant when connection is created
    			if (!nickname?.includes('_' + VideoType.SCREEN)) {
    				this.remoteUserService.add(event, null);

    				//Sending nicnkanme signal to new participants
    				if (this.openViduWebRTCService.needSendNicknameSignal()) {
    					const data = { clientData: this.localUserService.getWebcamUserName() };
    					this.openViduWebRTCService.sendSignal(Signal.NICKNAME_CHANGED, event.connection, data);
    				}
    			}
    		});

    		this.session.on('connectionDestroyed', (event: ConnectionEvent) => {
    			if (this.openViduWebRTCService.isMyOwnConnection(event.connection.connectionId)) {
    				return;
    			}
    			this.remoteUserService.deleteUserName(event);
    			const nickname: string = this.remoteUserService.getNicknameFromConnectionData(event.connection.data);
    			// Deleting participant when connection is destroyed
    			if (!nickname?.includes('_' + VideoType.SCREEN)) {
    				this.remoteUserService.removeUserByConnectionId(event.connection.connectionId);
    			}
    		});
    	}

    	private subscribeToStreamCreated() {
    		this.session.on('streamCreated', (event: StreamEvent) => {
    			const connectionId = event.stream.connection.connectionId;

    			if (this.openViduWebRTCService.isMyOwnConnection(connectionId)) {
    				return;
    			}

    			const subscriber: Subscriber = this.session.subscribe(event.stream, undefined);
    			this.remoteUserService.add(event, subscriber);
    			// this.oVSessionService.sendNicknameSignal(event.stream.connection);
    		});
    	}

    	private subscribeToStreamDestroyed() {
    		this.session.on('streamDestroyed', (event: StreamEvent) => {
    			const connectionId = event.stream.connection.connectionId;
    			this.remoteUserService.removeUserByConnectionId(connectionId);
    			// event.preventDefault();
    		});
    	}

    	private subscribeToStreamPropertyChange() {
    		this.session.on('streamPropertyChanged', (event: StreamPropertyChangedEvent) => {
    			const connectionId = event.stream.connection.connectionId;
    			if (this.openViduWebRTCService.isMyOwnConnection(connectionId)) {
    				return;
    			}
    			if (event.changedProperty === 'videoActive') {
    				this.remoteUserService.updateUsers();
    			}
    		});
    	}

    	private subscribeToNicknameChanged() {
    		this.session.on('signal:nicknameChanged', (event: any) => {
    			const connectionId = event.from.connectionId;
    			if (this.openViduWebRTCService.isMyOwnConnection(connectionId)) {
    				return;
    			}
    			this.remoteUserService.updateNickname(connectionId, event.data);
    		});
    	}

    	private subscribeToReconnection() {
    		this.session.on('reconnecting', () => {
    			this.log.w('Connection lost: Reconnecting');
    			this.actionService.openDialog('Connection Problem', 'Oops! Trying to reconnect to the session ...', false);
    		});
    		this.session.on('reconnected', () => {
    			this.log.w('Connection lost: Reconnected');
    			this.actionService.closeDialog();
    		});
    		this.session.on('sessionDisconnected', (event: SessionDisconnectedEvent) => {
    			if (event.reason === 'networkDisconnect') {
    				this.actionService.closeDialog();
    				this.leaveSession();
    			}
    		});
    	}
    }