Add n8n integration for automation workflows

[Haimantika]

Enable workflows via n8n, e.g. trigger automations when notes are created/updated/deleted.

Acceptance Criteria:

• Expose webhook triggers from SeaNotes to n8n.
• Example workflow in n8n: “When a note is created → send email/slack notification.”
• Update README with setup guide.

[naikmubashir]

hi, i would like to work on this issue

[ANINDITAPRIYADARSHINI]

Hello @Haimantika,

I see that another user has shown interest in Issue #32 (n8n integration) but hasn't been assigned yet.

If this issue is still available, I would like to claim it for Hacktoberfest. I can efficiently implement the secure webhook triggers (create/update/delete) required for the n8n automation.

Please let me know the status, and if it's open, then kindly assign it to me.

Thank you!

[Haimantika]

hi, i would like to work on this issue

Hey, do you still want to take this one?

[Haimantika]

Hello @Haimantika,

I see that another user has shown interest in Issue #32 (n8n integration) but hasn't been assigned yet.

If this issue is still available, I would like to claim it for Hacktoberfest. I can efficiently implement the secure webhook triggers (create/update/delete) required for the n8n automation.

Please let me know the status, and if it's open, then kindly assign it to me.

Thank you!

Hi since I have assigned another issue to you which is still pending, I have assigned this one to @naikmubashir.

[naikmubashir]

hi, i would like to work on this issue

Hey, do you still want to take this one?

Yes.

[ANINDITAPRIYADARSHINI]

Hello @Haimantika,
I see that another user has shown interest in Issue #32 (n8n integration) but hasn't been assigned yet.
If this issue is still available, I would like to claim it for Hacktoberfest. I can efficiently implement the secure webhook triggers (create/update/delete) required for the n8n automation.
Please let me know the status, and if it's open, then kindly assign it to me.
Thank you!

Hi since I have assigned another issue to you which is still pending, I have assigned this one to @naikmubashir.

Hi @Haimantika,

Got it. Just noting I requested this last week while waiting, but I understand your decision.

I'm making good progress on my current assigned issue and will have a PR ready soon. Looking forward to contributing more after this one is done.

Thanks.

[shrvansudhakara]

@Haimantika I'd like to work on this issue if its pending.

Proposed changes:

1. Database Schema (prisma/schema.prisma)

• Add Webhook model (url, events, secret, isActive)
• Add WebhookDelivery model for logging (event, payload, success, attempt)
• Add WebhookEvent enum (NOTE_CREATED, NOTE_UPDATED, NOTE_DELETED)

2. Webhook Service (services/webhook/webhookService.ts)

• Async webhook delivery with retry logic (3 attempts, exponential backoff)
• HMAC-SHA256 signature for security
• Non-blocking execution to avoid impacting note operations

3. API Endpoints

• POST/GET /api/webhooks - Create and list webhooks
• GET/PUT/DELETE /api/webhooks/[id] - Manage individual webhook
• POST /api/webhooks/[id]/test - Test webhook delivery
• GET /api/webhooks/[id]/deliveries - View delivery history

4. Integration Points

• Hook into createNote.ts, editNote.ts, deleteNote.ts
• Trigger webhooks after successful operations
• Pass full note data in payload

5. Documentation

• Add n8n setup guide to README
• Include example n8n workflow JSON
• Document webhook payload format and signature verification