# Website → RootNode Academy Enrollment Integration

Audience: whoever builds `rootnodeacademy.com` (marketing, pricing, checkout) and needs to turn
a successful purchase/signup into a real RootNode Academy student enrollment. This document is
meant to be enough on its own — you should not need to read the Platform API's source to
integrate against it.

## Architecture

```
rootnodeacademy.com (marketing, pricing, checkout — built separately, not in this repo)
    |
    | your backend verifies payment/signup with your payment provider
    v
your backend calls the RootNode Enrollment API (below) — server-to-server only
    v
RootNode Academy Platform API
    creates/matches a student account
    creates or reuses (idempotently) an enrollment
    v
the student logs in at the RootNode Academy platform and sees their program
```

**RootNode never talks to your payment provider, and your payment provider never talks to
RootNode.** Your backend is the only thing that calls this endpoint, after it has already
confirmed payment (or whatever your enrollment trigger is) on its own. This endpoint knows
nothing about Stripe, PayPal, or any other provider's object model — it only understands a
small, generic enrollment event described below.

## The endpoint

```
POST /api/integrations/enrollments
```

Reachable at the RootNode Academy platform's public origin (the same host your students'
browsers already use), via HTTPS in any real deployment. This is the **only** endpoint your
backend needs.

## Authentication

A pre-shared secret, sent as a header:

```
X-RootNode-Integration-Key: <the secret>
```

- This is **not** a student or admin login. It has nothing to do with cookies, sessions, or
  browser auth of any kind.
- **The secret must live only in your backend's server-side configuration.** It must never be
  embedded in any browser-served JavaScript, mobile app bundle, or client-side config — anyone
  who obtains it can create enrollments.
- A request with a missing or wrong key gets `401 { "error": "unauthorized" }` and nothing else
  happens — no student is looked up, nothing is created.
- RootNode will provide you with the production secret out of band (not over email/chat in
  plaintext — ask the RootNode team for the current secure-sharing process). Rotate it by
  asking RootNode to issue a new one; there is no self-service rotation yet.

## Request

```json
{
  "event_id": "order_9f8e7d6c5b4a",
  "source": "website",
  "program_slug": "root-kubernetes-foundations",
  "status": "paid",
  "student": {
    "email": "jamie@example.com",
    "login_identifier": null,
    "display_name": "Jamie Rivera"
  }
}
```

| Field | Required | Notes |
|---|---|---|
| `event_id` | **yes** | A string, unique per real-world event, from *your* system (an order ID, a payment intent ID — anything stable). This is the idempotency key — see below. Not a RootNode-generated value. |
| `source` | no | Free text, e.g. `"website"`. Recorded for audit only, defaults to `"integration"` if omitted. |
| `program_slug` | **yes** | The RootNode program's id, e.g. `"root-kubernetes-foundations"`. Ask RootNode for the current list — there is no public program-catalog endpoint. |
| `status` | **yes** | One of: `"paid"`, `"active"`, `"confirmed"` (all mean "grant access now") or `"pending"`, `"awaiting_payment"` (means "record the enrollment but don't grant access yet"). This is a small, fixed, provider-neutral vocabulary — translate whatever your payment provider says into one of these five values before calling. Anything else is rejected. |
| `student.email` | one of email/login_identifier required | The student's own email, if they have one. |
| `student.login_identifier` | one of email/login_identifier required | Use this instead of/alongside email for a student who doesn't have their own email address (a minor enrolled by a parent/guardian — see below). Any stable, unique string you control — e.g. an internal user ID from your own system works well. |
| `student.display_name` | no | Shown in the RootNode instructor portal and, once the student logs in, to themselves. Falls back to the email or login_identifier if omitted. |

### What you must NOT send

- No card numbers, CVVs, bank details, or any other payment-card data. This endpoint has no
  field for it and never will — RootNode never touches payment-card data at all.
- No raw provider webhook payloads (Stripe event objects, PayPal IPN bodies, etc.) — translate
  to the shape above first. This endpoint is deliberately provider-neutral.
- No password. RootNode issues its own credential/activation flow (see "What the student
  experiences" below) — you cannot set a student's password through this endpoint, and should
  never try to invent one.

## Response

**Success — a new enrollment was created** (`201`):
```json
{ "enrollment_id": "6dd6d898-f895-477f-97d8-1e5ce89c27cd", "student_id": "student-042", "program_id": "root-kubernetes-foundations", "status": "active", "created": true }
```

**Success — this exact `event_id` was already processed** (`200`, idempotent replay — see below):
```json
{ "enrollment_id": "6dd6d898-f895-477f-97d8-1e5ce89c27cd", "student_id": "student-042", "program_id": "root-kubernetes-foundations", "status": "active", "created": false }
```

**Errors:**

| Status | Body `error` | Meaning |
|---|---|---|
| `401` | `unauthorized` | Missing/wrong `X-RootNode-Integration-Key`. |
| `400` | `event_id is required` | — |
| `400` | `program_slug is required` | — |
| `400` | `status must be one of: paid, active, confirmed, pending, awaiting_payment` | — |
| `400` | `student.email or student.login_identifier is required` | — |
| `404` | `PROGRAM_NOT_FOUND` | `program_slug` doesn't exist. |
| `409` | `PROGRAM_INACTIVE` | The program exists but isn't currently open for enrollment. |
| `500` | `internal_error` | Something unexpected broke server-side. Safe to retry (see below). |

## Idempotency and retries

**`event_id` is the whole mechanism.** Send the exact same `event_id` again (your payment
provider retried a webhook, your own backend retried a timed-out request, anything) and you get
back the **same enrollment**, `created: false`, `200` instead of `201` — never a duplicate. This
is enforced at the database level (a unique constraint), not just "best effort," so it's safe
under concurrent/parallel retries too, not just sequential ones.

**Retry policy:** on a `5xx` or a network error/timeout, retry with the *same* `event_id`
(standard exponential backoff is fine — a few attempts over a couple of minutes is plenty). On a
`4xx`, do not blindly retry — fix the request (see the error table above) or, for `401`, check
your key.

**Never generate a new `event_id` for a retry of the same real-world event.** Doing so would
create a second enrollment. Reserve a fresh `event_id` only for a genuinely new enrollment event
(e.g. a renewal, a second purchase).

## Student matching rules

RootNode looks for an existing student by `email` (case-insensitive) or `login_identifier`
(exact match), in that priority. If found, that student is enrolled. If not found, a new student
account is created automatically — this is a trusted server-to-server call from your backend,
equivalent to an instructor adding a student through the admin portal, not a public signup form.

## Minor / no-email students

RootNode explicitly supports students without their own email address (younger students,
enrolled by a parent/guardian). Send `student.login_identifier` instead of (or in addition to)
`email` — any stable string you control, such as an internal account/order reference. You must
send **at least one** of `email` or `login_identifier`; sending neither is rejected.

There is no guardian/parent account system yet — the enrollment is created directly against the
student identity you provide. If you need to support "a parent manages multiple children's
enrollments" as a first-class concept later, talk to the RootNode team before building around a
workaround; the schema has room for it but it isn't implemented.

## What the student experiences after you call this

If `status` mapped to "active": the student can log in immediately (once RootNode's own
activation flow — a one-time setup link — reaches them; RootNode does not send that email/link
for you today, see "Known limitation" below) and sees the program on their dashboard right away.
If `status` mapped to "pending": the enrollment exists but the student can't start until a
RootNode instructor activates it — useful if your flow needs a manual review step before access
is granted.

**Known limitation:** RootNode does not yet send the student's activation email itself. If the
student is brand new (no prior RootNode account), your integration is responsible for letting
them know they have access and how to set up their login, until RootNode's own email delivery
exists. Ask the RootNode team for the current interim process.

## Local/staging testing

Set `INTEGRATION_SHARED_SECRET` in your test environment's config (in local dev,
`platform/.env`; example dev value used by this repo's own test suite:
`dev-integration-secret-not-for-production` — never use this value anywhere real). Then:

```bash
curl -s -X POST http://localhost:4200/api/integrations/enrollments \
  -H 'Content-Type: application/json' \
  -H 'X-RootNode-Integration-Key: dev-integration-secret-not-for-production' \
  -d '{
    "event_id": "test-order-001",
    "source": "website",
    "program_slug": "root-kubernetes-foundations",
    "status": "paid",
    "student": { "email": "test-student@example.com", "display_name": "Test Student" }
  }'
```

All example data on this page is fake — do not reuse these values against a real deployment.

## Production secret handling

- The production `X-RootNode-Integration-Key` value must be requested from the RootNode team
  and stored in your backend's secret manager/environment configuration — never in source
  control, never in a browser-reachable config, never logged.
- RootNode's own logs and audit trail never record the secret's value, only that an
  authenticated call happened (or a `401` if it didn't).