How do I access Microsoft Graph API with Meteor? - meteor

Question

I've found a lot of tutorials that have gotten me as far as logging in with OAuth in Meteor / MeteorAngular. Unfortunately, they've never gotten me as far as successfully accessing the Microsoft graph API. I know I need to (somehow) transform my user access token into a bearer token, but I haven't found any guides on how to do that in Meteor -- and the sample Node apps I've found to do similar things don't run out of the box, either. I have some routes that should return the data I need, I just can't quite seem to hit them.

Answer 1

Meteor + Microsoft... is darned near nonexistent, as far as I can tell
lol you aren't wrong. However as one of the primary engineers behind Sidekick AI (a scheduling app integrating with Microsoft+Google calendar built with Meteor) I have some very practical examples of using said access_token to work with the Microsoft Graph API with Meteor.
Here's some examples of functions I've written which use the access_token to communicate with the Graph API to work with calendars. Notably the line that matters is where I'm setting
Authorization: `Bearer ${sources.accessToken} // Sources just being the MongoDB collection we store that info in
NOTE: if you need more I'd be happy to provide but didn't want to clutter this initially
NOTE: wherever you see "Outlook" it really should say "Microsoft"; that's just a symptom of uninformed early development.
/**
* This function will use the Meteor HTTP package to make a POST request
* to the Microsoft Graph Calendar events endpoint using an access_token to create a new
* Event for the connected Outlook account
*
* #param { String } sourceId The Sources._id we are using tokens from for the API request
*
* #param { Object } queryData Contains key value pairs which will describe the new Calendar
* Event
*
* #returns { Object } The newly created Event Object
*/
export const createOutlookCalendarEvent = async (
sourceId: string,
queryData: {
subject: any
start: {
dateTime: any
timeZone: string
}
end: {
dateTime: any
timeZone: string
}
isOnlineMeeting: any
body: {
content: string
contentType: string
},
attendees: {
emailAddress: {
address: string
name: string
}
}[]
}
): Promise<object> => {
await attemptTokenRefresh(sourceId)
const sources = Sources.findOne({ _id: sourceId })
const options = {
headers: {
Accept: `application/json`,
Authorization: `Bearer ${sources.accessToken}`,
},
data: queryData,
}
return new Promise((resolve, reject) => {
HTTP.post(`${OauthEndpoints.Outlook.events}`, options, (error, response) => {
if (error) {
reject(handleError(`Failed to create a new Outlook Calendar event`, error, { options, sourceId, queryData, sources }))
} else {
resolve(response.data)
}
})
})
}
/**
* This function will use the Meteor HTTP package to make a GET request
* to the Microsoft Graph Calendars endpoint using an access_token obtained from the
* Microsoft common oauth2 v2.0 token endpoint. It retrieves Objects describing the calendars
* under the connected account
*
* #param sourceId The Sources._id we are using tokens from for the API request
*
* #returns Contains Objects describing the user's connected account's calendars
*/
export const getCalendars = async (sourceId: string): Promise<Array<any>> => {
await attemptTokenRefresh(sourceId)
const sources = Sources.findOne({ _id: sourceId })
const options = {
headers: {
Accept: `application/json`,
Authorization: `Bearer ${sources.accessToken}`,
},
}
return new Promise((resolve, reject) => {
HTTP.get(OauthEndpoints.Outlook.calendars, options, (error, response) => {
if (error) {
reject(handleError(`Failed to retrieve the calendars for a user's connected Outlook account`, error, { options, sources, sourceId }))
} else {
resolve(response.data.value)
}
})
})
}
// reference for the afore-mentioned `OauthEndpoints`
/**
* Object holding endpoints for our Oauth integrations with Google,
* Microsoft, and Zoom
*/
export const OauthEndpoints = {
...
Outlook: {
auth: 'https://login.microsoftonline.com/common/oauth2/v2.0/authorize?',
token: 'https://login.microsoftonline.com/common/oauth2/v2.0/token',
calendars: 'https://graph.microsoft.com/v1.0/me/calendars',
calendarView: 'https://graph.microsoft.com/v1.0/me/calendar/calendarView',
events: 'https://graph.microsoft.com/v1.0/me/calendar/events',
messages: 'https://graph.microsoft.com/v1.0/me/messages',
sendMail: 'https://graph.microsoft.com/v1.0/me/sendMail',
},
...
}