[GF-BE-15] Build Google Calendar OAuth and booking sync service

[yusuftomilola]

Problem

Members must manually add their ManageHub bookings to their personal calendars. There is no calendar sync integration, so booking reminders are missed and scheduling conflicts with external meetings are common. All major coworking platforms offer Google Calendar sync as a standard feature.

Proposed Solution

Create a new NestJS module at backend/src/calendar-sync/ using the googleapis npm package (npm install googleapis).

Entity: CalendarToken

• id (UUID), userId (UUID FK → users, unique)
• provider (enum: google — extensible for future providers)
• accessToken (text, encrypted), refreshToken (text, encrypted)
• expiresAt (timestamp)
• calendarId (string — the user's selected Google Calendar ID)
• createdAt, updatedAt

Endpoints:

Method	Path	Access
GET	/calendar-sync/auth/google	Authenticated — returns Google OAuth URL
GET	/calendar-sync/auth/google/callback	OAuth callback (redirects back to frontend)
DELETE	/calendar-sync/disconnect	Authenticated — revokes and deletes token
GET	/calendar-sync/status	Authenticated — returns { connected: boolean, provider }

Sync logic: Hook into confirm-booking.provider.ts and cancel-booking.provider.ts. When a booking is confirmed for a user with an active CalendarToken, create a Google Calendar event. When a booking is cancelled, delete the corresponding calendar event. Store the Google event ID on the booking entity (googleCalendarEventId nullable field).

Acceptance Criteria

• googleapis installed and listed in package.json
• OAuth flow completes and stores encrypted tokens in CalendarToken
• GET /calendar-sync/auth/google/callback exchanges the auth code for tokens and redirects to frontend
• Booking confirmation automatically creates a Google Calendar event for connected users
• Booking cancellation automatically deletes the corresponding Google Calendar event
• CalendarSyncModule is registered in AppModule
• OAuth client credentials (GOOGLE_CLIENT_ID, GOOGLE_CLIENT_SECRET, GOOGLE_REDIRECT_URI) are documented in .env.example

[nanaf6203-bit]

@nanaf6203-bit has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

can I please take this issue please?

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[brodapeethar]

@brodapeethar has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

hi maintainer pls kind assign me dis issue , i beg you please

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[grantfox-oss]

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[grantfox-oss]

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@nanaf6203-bit's PR #1316 was approved and merged by @yusuftomilola.

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