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var request = require('request');
const CLIENT_ID = '<client_id>';
const CLIENT_SECRET = '<client_secret>';
const REDIRECT_URI = '<redirect_uri>';
module.exports = {
// Handles the the redirect URI location
callback: function(req, res) {
// code is the OAuth code received from the Zoom OAuth permissions page
if (req.query.code) {
let url = 'https://zoom.us/oauth/token?grant_type=authorization_code&code=' + req.query.code + '&redirect_uri=' + REDIRECT_URI;
request.post(url, function(err, response, body) {
if (err) {
// Log the error and inform the user that authentication has failed
}
body = JSON.parse(body);
if (body.access_token) {
// Associate the Zoom authentication details (access_token, refresh_token, scope) with the user
// If the user has already connected Zoom before, update the authentication details
// Finally, inform the user that Zoom has been successfully connected
} else {
// Log the error and inform the user that authentication has failed
}
}).auth(CLIENT_ID, CLIENT_SECRET);
}
// If no code provided, need to redirect the user to the Zoom OAuth permissions page
res.redirect('https://zoom.us/oauth/authorize?response_type=code&client_id=' + CLIENT_ID + '&redirect_uri=' + REDIRECT_URI);
},
/**
* Retrieves a new access token from the Zoom API using the refresh token.
* @param {Object} credential - the user's oauth credentials for zoom.
* @param {string} credential.accessToken - the expired Zoom access token
* @param {string} credential.refreshToken - the Zoom refresh token
* @param {function} callback - the callback that passes along the fresh access token or error message
*/
_refreshAccessToken: function(credential, callback) {
let url = 'https://zoom.us/oauth/token?grant_type=refresh_token&refresh_token=' + credential.refreshToken + '&redirect_uri=' + REDIRECT_URI;
request.post(url, function(err, response, body) {
if (err) {
// Log the error
}
if (response.statusCode == 400 || response.statusCode == 401) {
// Request for a new access_token has failed - this likely means that the user has revoked Zoom account access from our app
// Gracefully handle the failure, and prompt the user to re-authenticate their Zoom account
}
var parsedBody = JSON.parse(body);
// Save the new access_token and refresh_token for future use and use the callback
}).auth(CLIENT_ID, CLIENT_SECRET);
},
/**
* Creates an example Zoom meeting for the user.
* @param {Object} credential - the user's oauth credentials for zoom.
* @param {string} credential.accessToken - the expired Zoom access token
* @param {string} credential.refreshToken - the Zoom refresh token
* @param {function} callback - the callback that passes along the created Zoom meeting or error message
*/
createMeeting: function(credential, callback) {
var self = this;
var tokenRetries = 3;
var makeRequest = function(accessToken) {
tokenRetries--;
if (!tokenRetries) {
// Attempts to create a meeting have failed after multiple attempts -> log the error and inform the user
}
request({
url: 'https://api.zoom.us/v2/users/me/meetings',
method: 'POST',
json: {
'topic': 'Zoom example meeting',
'start_time': '2018-02-10T08:00:45+00:00',
'duration': 30
},
headers: {
'content-type': 'application/json'
}
}, function(err, response, body) {
if (err || !response || response.statusCode == 400) {
// Handle the error
}
if (response.statusCode === 401) {
// accessToken has expired - need to request a new access token using the refresh token
self._refreshAccessToken(credential, function(err, updatedCredential) {
if (err || !updatedCredential) {
// Handle the error
}
// Retry using the fresh access token
makeRequest(updatedCredential.accessToken);
});
} else {
return callback(null, body);
}
}).auth(null, null, true, accessToken);
}
makeRequest(credential.accessToken);
}
};
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