2021-06-01 10:30:37 +03:00
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/*
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Copyright 2021 Šimon Brandner <simon.bra.ag@gmail.com>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import { EventType } from "matrix-js-sdk/src/@types/event";
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import { MatrixEvent } from "matrix-js-sdk/src/models/event";
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import { CallEvent, CallState, MatrixCall } from "matrix-js-sdk/src/webrtc/call";
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import CallHandler from '../../CallHandler';
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import { EventEmitter } from 'events';
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export enum CallEventGrouperEvent {
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StateChanged = "state_changed",
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}
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2021-06-01 11:33:44 +03:00
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const SUPPORTED_STATES = [
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CallState.Connected,
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CallState.Connecting,
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CallState.Ended,
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CallState.Ringing,
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];
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2021-06-01 10:30:37 +03:00
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export default class CallEventGrouper extends EventEmitter {
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2021-06-01 11:42:21 +03:00
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events: Array<MatrixEvent> = [];
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call: MatrixCall;
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state: CallState;
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2021-06-01 10:30:37 +03:00
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2021-06-01 11:42:21 +03:00
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private get invite(): MatrixEvent {
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return this.events.find((event) => event.getType() === EventType.CallInvite);
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}
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2021-06-01 11:03:17 +03:00
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public answerCall = () => {
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this.call?.answer();
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}
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2021-06-01 11:03:17 +03:00
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public rejectCall = () => {
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this.call?.reject();
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}
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2021-06-01 11:03:17 +03:00
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public callBack = () => {
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}
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public isVoice(): boolean {
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const invite = this.invite;
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// FIXME: Find a better way to determine this from the event?
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let isVoice = true;
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if (
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invite.getContent().offer && invite.getContent().offer.sdp &&
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invite.getContent().offer.sdp.indexOf('m=video') !== -1
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) {
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isVoice = false;
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}
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return isVoice;
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}
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public getState() {
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return this.state;
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}
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private setCallListeners() {
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if (!this.call) return;
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this.call.addListener(CallEvent.State, this.setCallState);
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}
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private setCallState = () => {
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if (SUPPORTED_STATES.includes(this.call?.state)) {
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this.state = this.call.state;
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} else {
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const lastEvent = this.events[this.events.length - 1];
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const lastEventType = lastEvent.getType();
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if (lastEventType === EventType.CallHangup) this.state = CallState.Ended;
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else if (lastEventType === EventType.CallReject) this.state = CallState.Ended;
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}
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this.emit(CallEventGrouperEvent.StateChanged, this.state);
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}
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public add(event: MatrixEvent) {
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const callId = event.getContent().call_id;
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this.events.push(event);
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if (!this.call) {
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this.call = CallHandler.sharedInstance().getCallById(callId);
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this.setCallListeners();
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}
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this.setCallState();
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}
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}
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