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webex.js
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webex.js
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const rootElement = document.getElementById("root");
const joinWithMediaBtn = document.getElementById("join-with-media");
const leaveMeetingBtn = document.getElementById("leave-meeting");
const toggleVBGBtn = document.getElementById("toggle-vbg-btn");
// Media elements
const remoteVideoStreamElm = document.getElementById("remote-video");
const remoteAudioStreamElm = document.getElementById("remote-audio");
const localVideoStreamElm = document.getElementById("local-video");
const localAudioStreamElm = document.getElementById("local-audio");
import {
meetingInfo,
guestEndpointUrl,
vbgImageUrl,
guestIssuerAccessToken,
personalAccessToken,
} from "./meeting-info.js";
let webex = null;
let createdMeeting = null;
let localStream = null;
let vbgEffect = null;
let isVBGEnabled = false;
rootElement.addEventListener("click", async (e) => {
switch (e.target.id) {
case "join-with-media":
await joinMeeting();
break;
case "toggle-vbg-btn":
await toggleVBG();
break;
case "leave-meeting":
await leaveMeeting();
break;
default:
break;
}
e.stopPropagation();
});
const guestUrl = "https://webexapis.com/v1/guests/token";
// Via Service App
async function getGuestAccessTokenV2() {
const response = await fetch(guestUrl, {
method: "post",
headers: {
Accept: "application/json",
"Content-Type": "application/json",
Authorization: `Bearer ${guestIssuerAccessToken}`,
},
body: JSON.stringify({
subject: "Guest token for Webex SDK Sample App",
displayName: "Guest User",
}),
});
const data = await response.json();
return data.accessToken;
}
async function getGuestAccessToken() {
// Create the end point using guest issuer
const response = await fetch(guestEndpointUrl, {
method: "post",
headers: {
Accept: "application/json",
"Content-Type": "application/json",
},
body: JSON.stringify({
name: "Guest User",
}),
});
const data = await response.json();
return data.body.token;
}
async function initWebexAndRegisterDevice(access_token) {
if (!access_token) {
alert("Please provide an access token");
return;
}
webex = window.webex = Webex.init({
credentials: {
access_token,
},
});
await webex.meetings.register();
}
async function createMeeting() {
// MeetingInfo object being referenced from meeting-info.js
const meeting = await webex.meetings.create(meetingInfo.sipAddress);
createdMeeting = meeting;
}
function setMediaListeners() {
// Wait for media in order to show video
createdMeeting.on("media:ready", (media) => {
console.log("Media ready", media);
switch (media.type) {
case "remoteVideo":
remoteVideoStreamElm.srcObject = media.stream;
break;
case "remoteAudio":
remoteAudioStreamElm.srcObject = media.stream;
break;
}
});
// Remove stream if media stopped
createdMeeting.on("media:stopped", (media) => {
switch (media.type) {
case "remoteVideo":
remoteVideoStreamElm.srcObject = null;
break;
case "remoteAudio":
remoteAudioStreamElm.srcObject = null;
break;
}
});
}
async function getLocalStreams() {
// https://github.com/webex/webex-js-sdk/wiki/Streams-and-Effects
const microphoneStream =
await webex.meetings.mediaHelpers.createMicrophoneStream({
echoCancellation: true,
noiseSuppression: true,
});
const cameraStream = await webex.meetings.mediaHelpers.createCameraStream({
width: 640,
height: 480,
}); // Optional params
localVideoStreamElm.srcObject = cameraStream.outputStream;
return {
microphone: microphoneStream,
camera: cameraStream,
};
}
async function verifyPassword() {
const { isPasswordValid } = await createdMeeting.verifyPassword(
meetingInfo.password,
);
if (!isPasswordValid) {
console.error("Invalid meeting password");
throw new Error("Invalid meeting password");
}
}
async function joinMeetingWithMedia(localStreams) {
const meetingOptions = {
mediaOptions: {
allowMediaInLobby: true,
localStreams,
},
};
await createdMeeting.joinWithMedia(meetingOptions);
leaveMeetingBtn.style.display = "inline";
joinWithMediaBtn.style.display = "none";
}
async function leaveMeeting() {
leaveMeetingBtn.innerHTML = "Leaving...";
leaveMeetingBtn.disabled = true;
await createdMeeting.leave();
reset();
}
export async function joinMeeting() {
joinWithMediaBtn.innerHTML = "Joining...";
joinWithMediaBtn.disabled = true;
joinWithMediaBtn.style.backgroundColor = "grey";
joinWithMediaBtn.style.cursor = "default";
try {
// Step-1
let accessToken;
if (guestEndpointUrl && guestIssuerAccessToken) {
accessToken = await getGuestAccessTokenV2();
} else {
accessToken = personalAccessToken;
}
// Step-2
await initWebexAndRegisterDevice(accessToken);
// Step-3
await createMeeting();
// Step-4
setMediaListeners();
// Step-5
localStream = await getLocalStreams();
// Step-6
// Enable only if meeting is password protected.
// await verifyPassword();
// Step-7
await joinMeetingWithMedia(localStream);
} catch (error) {
console.error("Error joining meeting", error);
reset();
}
}
async function toggleVBG() {
toggleVBGBtn.innerText = "Toggling...";
if (!vbgEffect) {
vbgEffect = await webex.meetings.createVirtualBackgroundEffect({
mode: "IMAGE", // options are 'BLUR', 'IMAGE', 'VIDEO'
bgImageUrl: vbgImageUrl,
// bgVideoUrl: blurVBGVideoUrl,
});
}
await localStream.camera.addEffect(vbgEffect);
if (isVBGEnabled) {
await vbgEffect.disable();
isVBGEnabled = false;
} else {
await vbgEffect.enable();
isVBGEnabled = true;
}
toggleVBGBtn.innerText = "Toggle VBG";
}
async function addBNR() {
bnrEffect = await webex.meetings.createNoiseReductionEffect();
await localStream.microphone.addEffect(bnrEffect);
await bnrEffect.enable();
}
async function disableBNR() {
await bnrEffect.disable();
}
function reset() {
// Join meeting button
joinWithMediaBtn.style.display = "block";
joinWithMediaBtn.innerHTML = "Join";
joinWithMediaBtn.disabled = false;
joinWithMediaBtn.style.backgroundColor = "#59b15d";
joinWithMediaBtn.style.cursor = "pointer";
// Leave meeting button
leaveMeetingBtn.style.display = "none";
leaveMeetingBtn.innerHTML = "Leave";
leaveMeetingBtn.disabled = false;
cleanUpMedia();
createdMeeting = null;
}
function cleanUpMedia() {
// local streams can be used across meetings
[
localAudioStreamElm,
localVideoStreamElm,
remoteVideoStreamElm,
remoteAudioStreamElm,
].forEach((elem) => {
if (elem.srcObject) {
try {
elem.srcObject.getTracks().forEach((track) => track.stop());
} catch (error) {
console.log("Cleanup media error: ", error);
} finally {
elem.srcObject = null;
}
}
});
}