First test implementation of video client
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nicolas
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212
lib/videoClient.ts
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212
lib/videoClient.ts
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function handleErrorsJson(response) {
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if (!response.ok) {
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response.json().then(console.log);
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throw Error(response.statusText);
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}
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return response.json();
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}
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function handleErrorsRaw(response) {
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if (!response.ok) {
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response.text().then(console.log);
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throw Error(response.statusText);
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}
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return response.text();
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}
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const zoomAuth = (credential) => {
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const isExpired = (expiryDate) => expiryDate < +(new Date());
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const authHeader = 'Basic ' + Buffer.from(process.env.CLIENT_ID + ':' + process.env.CLIENT_SECRET).toString('base64');
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const refreshAccessToken = (refreshToken) => fetch('https://zoom.us/oauth/token', {
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method: 'POST',
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headers: {
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'Authorization': authHeader,
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'Content-Type': 'application/x-www-form-urlencoded'
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},
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body: new URLSearchParams({
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'refresh_token': refreshToken,
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'grant_type': 'refresh_token',
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})
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})
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.then(handleErrorsJson)
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.then((responseBody) => {
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credential.key.access_token = responseBody.access_token;
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credential.key.expires_in = Math.round((+(new Date()) / 1000) + responseBody.expires_in);
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return credential.key.access_token;
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})
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return {
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getToken: () => !isExpired(credential.key.expires_in) ? Promise.resolve(credential.key.access_token) : refreshAccessToken(credential.key.refresh_token)
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};
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};
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interface Person {
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name?: string,
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email: string,
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timeZone: string
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}
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interface VideoMeeting {
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title: string;
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startTime: string;
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endTime: string;
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description?: string;
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timezone: string;
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organizer: Person;
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attendees: Person[];
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}
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interface VideoApiAdapter {
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createMeeting(meeting: VideoMeeting): Promise<any>;
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updateMeeting(uid: String, meeting: VideoMeeting);
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deleteMeeting(uid: String);
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getAvailability(dateFrom, dateTo): Promise<any>;
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}
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const ZoomVideo = (credential): VideoApiAdapter => {
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const auth = zoomAuth(credential);
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const translateMeeting = (meeting: VideoMeeting) => {
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// Documentation at: https://marketplace.zoom.us/docs/api-reference/zoom-api/meetings/meetingcreate
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return {
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topic: meeting.title,
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type: 2, // Means that this is a scheduled meeting
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start_time: meeting.startTime,
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duration: 60, //TODO calculate endTime - startTime (in minutes, int)
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//schedule_for: "string", TODO: Used when scheduling the meeting for someone else (needed?)
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timezone: meeting.timezone,
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//password: "string", TODO: Should we use a password? Maybe generate a random one?
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agenda: meeting.description,
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settings: {
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host_video: true,
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participant_video: true,
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cn_meeting: false, // TODO: true if host meeting in china
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in_meeting: false, // TODO: true if host meeting in india
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join_before_host: true,
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mute_upon_entry: false,
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watermark: false,
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use_pmi: false,
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approval_type: 2,
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audio: "both",
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auto_recording: "none",
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enforce_login: false,
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registrants_email_notification: true
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}
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};
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};
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return {
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getAvailability: (dateFrom, dateTo) => {
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/*const payload = {
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schedules: [credential.key.email],
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startTime: {
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dateTime: dateFrom,
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timeZone: 'UTC',
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},
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endTime: {
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dateTime: dateTo,
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timeZone: 'UTC',
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},
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availabilityViewInterval: 60
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};
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return auth.getToken().then(
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(accessToken) => fetch('https://graph.microsoft.com/v1.0/me/calendar/getSchedule', {
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method: 'post',
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headers: {
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'Authorization': 'Bearer ' + accessToken,
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'Content-Type': 'application/json'
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},
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body: JSON.stringify(payload)
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})
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.then(handleErrorsJson)
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.then(responseBody => {
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return responseBody.value[0].scheduleItems.map((evt) => ({
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start: evt.start.dateTime + 'Z',
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end: evt.end.dateTime + 'Z'
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}))
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})
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).catch((err) => {
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console.log(err);
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});*/
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},
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//TODO Also add the client user to the meeting after creation
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createMeeting: (meeting: VideoMeeting) => auth.getToken().then(accessToken => fetch('https://zoom.us/users/me/meetings', {
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method: 'POST',
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headers: {
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'Authorization': 'Bearer ' + accessToken,
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'Content-Type': 'application/json',
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},
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body: JSON.stringify(translateMeeting(meeting))
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}).then(handleErrorsJson)),
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deleteMeeting: (uid: String) => auth.getToken().then(accessToken => fetch('https://zoom.us/meetings/' + uid, {
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method: 'DELETE',
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headers: {
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'Authorization': 'Bearer ' + accessToken
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}
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}).then(handleErrorsRaw)),
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updateMeeting: (uid: String, meeting: VideoMeeting) => auth.getToken().then(accessToken => fetch('https://zoom.us/meetings/' + uid, {
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method: 'PATCH',
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headers: {
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'Authorization': 'Bearer ' + accessToken,
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'Content-Type': 'application/json'
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},
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body: JSON.stringify(translateMeeting(meeting))
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}).then(handleErrorsRaw)),
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}
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};
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// factory
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const videoIntegrations = (withCredentials): VideoApiAdapter[] => withCredentials.map((cred) => {
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switch (cred.type) {
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case 'zoom':
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return ZoomVideo(cred);
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default:
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return; // unknown credential, could be legacy? In any case, ignore
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}
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}).filter(Boolean);
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const getBusyTimes = (withCredentials, dateFrom, dateTo) => Promise.all(
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videoIntegrations(withCredentials).map(c => c.getAvailability(dateFrom, dateTo))
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).then(
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(results) => results.reduce((acc, availability) => acc.concat(availability), [])
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);
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const createMeeting = (credential, meeting: VideoMeeting): Promise<any> => {
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//TODO Implement email template
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/*createNewMeetingEmail(
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meeting,
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);*/
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if (credential) {
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return videoIntegrations([credential])[0].createMeeting(meeting);
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}
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return Promise.resolve({});
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};
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const updateMeeting = (credential, uid: String, meeting: VideoMeeting): Promise<any> => {
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if (credential) {
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return videoIntegrations([credential])[0].updateMeeting(uid, meeting);
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}
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return Promise.resolve({});
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};
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const deleteMeeting = (credential, uid: String): Promise<any> => {
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if (credential) {
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return videoIntegrations([credential])[0].deleteMeeting(uid);
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}
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return Promise.resolve({});
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};
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export {getBusyTimes, createMeeting, updateMeeting, deleteMeeting, VideoMeeting};
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