# Resend Invite Codes — Design

**Date**: 2026-02-12

## Summary

Add a "Resend" capability to both invite systems (platform invite codes and account invites). Resending revokes the old code and generates a fresh one, then emails it to the recipient.

## Backend

### Platform Invite Codes

**New endpoint**: `POST /api/v1/invites/{code}/resend` (admin-only)

1. Look up existing invite by code
2. Reject if already used (409 Conflict)
3. Delete the old invite
4. Create a new invite with the same properties (email, plan, trial_days, note, expiration recalculated from now)
5. Send email via `EmailService.send_invite_email()`
6. Log audit event
7. Return the new invite

### Account Invites

**New endpoint**: `POST /api/v1/accounts/me/invites/{invite_id}/resend` (owner-only)

1. Look up existing invite by ID
2. Reject if already used (409 Conflict)
3. Delete the old invite
4. Create a new invite with the same email, role, and fresh expiration
5. Send email via new `EmailService.send_account_invite_email()`
6. Log audit event
7. Return the new invite

### New Email Method: `send_account_invite_email()`

Added to `EmailService` in `backend/app/core/email.py`.

- **Parameters**: `to_email`, `code`, `account_name`, `role`, `signup_url`
- **Subject**: "You've been invited to join [Account Name] on ResolutionFlow"
- **Body**: Same dark monochrome HTML template as platform invites, with:
  - "You've been invited to join **[Account Name]** as an **Engineer/Viewer**"
  - Prominent invite code display (same style)
  - No plan/trial section
  - "Create Your Account" CTA button
- **Returns** `bool` — best-effort, never raises

## Frontend

### Platform Invite Codes (`InviteCodesPage.tsx`)

- Resend button in actions column (next to copy/delete)
- Only visible for unused, non-expired codes with an email address
- Calls `POST /api/v1/invites/{code}/resend`
- Shows success toast with new code, refreshes list
- Loading state on button during API call

### Account Invites (`AccountSettingsPage.tsx`)

- Resend button next to each pending invite
- Only visible for unused, non-expired invites
- Calls `POST /api/v1/accounts/me/invites/{invite_id}/resend`
- Shows success toast, refreshes list
- Loading state on button during API call

## Files to Modify

- `backend/app/core/email.py` — add `send_account_invite_email()` + HTML template
- `backend/app/api/endpoints/invite.py` — add resend endpoint for platform codes
- `backend/app/api/endpoints/accounts.py` — add resend endpoint for account invites
- `frontend/src/pages/admin/InviteCodesPage.tsx` — add resend button
- `frontend/src/pages/AccountSettingsPage.tsx` — add resend button
- `frontend/src/api/admin.ts` — add resend API call
- `frontend/src/api/accounts.ts` — add resend API call