Files
netris-nestri/apps/api/README.md
Wanjohi 40b4270161 refactor(api)!: remove the shared operator secret, and let hosts sync their own
A single secret that turned any request into an operator was the only
credential several routes accepted, and it had no caller left: the device
pairing it existed for is on hold, and nothing in this tree or any client
sent it. What remained was a key that bypassed authentication entirely,
required to boot, and checked by nobody.

Every route behind it had a better answer available:

- Library and game sync move to host credentials. Both took a `userId` in
  the body, which meant one secret could write into anybody's library. A
  host now says which of its enrolled users a batch is for, and that claim
  is checked against the Steam sign-ins it actually holds — one box carries
  several people's accounts, so the pair is the unit.
- Download-state reporting narrows to hosts alone, and the body that could
  name a different host is gone. Which host is reporting comes from its own
  credentials, and a body that still names one is refused rather than
  ignored.
- Linking a Steam account is always for the caller.
- Creating a game by hand is deleted; syncing already upserts the catalogue.
- Reading the waitlist is deleted. Every address on it belongs to someone
  who has not agreed to anything, and answering it over HTTP made that list
  something a leaked key could drain.
- The pairing-code routes are deleted with the flow they served. The domain
  module and its table stay, so returning to it is a route file rather than
  a migration.

Nothing in the API now accepts a credential that stands for more than one
caller: every request resolves to a specific user or a specific host, which
is what lets a route say "the caller's own library" and mean it.

BREAKING CHANGE: the `x-nestri-admin-token` header is no longer accepted and
`ADMIN_SHARED_SECRET` is no longer read. `POST /games`, `GET /waitlist` and
the `/pairing-code` routes are gone; `POST /games/sync` and `POST /library/sync`
now require host credentials and take `userId` in the body; `POST /steam/link`
no longer accepts `userId`; `POST /games/download-state` no longer accepts
`hostId`.
2026-09-18 22:59:06 +03:00

63 lines
3.0 KiB
Markdown

# apps/api
The public HTTP API for Nestri — a [Hono](https://hono.dev) app. One handler, run either as a
Cloudflare Worker or as an ordinary HTTP server.
## What it does
Exposes the JSON API consumed by frontends and other clients. Every route is a thin wrapper that
validates input, delegates to a domain function in [`@nestri/core`](../../packages/core/README.md),
and returns `{ data: ... }`. All business logic lives in the core package.
Routes:
| Prefix | Purpose |
| --------------- | --------------------------------------------------- |
| `/` | Health check |
| `/user` | Current user profile, fingerprints, linked accounts |
| `/steam` | Link / sync / unlink a Steam account |
| `/library` | Owned games with playtime |
| `/games` | Game catalog |
| `/pairing-code` | Device pairing codes |
| `/machine` | Host machines |
| `/access-token` | Short-lived access tokens |
| `/doc` | Generated OpenAPI spec |
## Structure
```text
app/
index.ts # The handler: middleware, routes, error handler, /doc
server.ts # The same handler behind a listening socket
middleware/auth.ts # Bearer JWT, access token or host credentials → Actor
routes/*.ts # Thin route namespaces (UserApi, SteamApi, ...)
utils/ # ErrorResponses, Result(), validator wrapping
wrangler.jsonc # Worker configuration, one environment per stage
Dockerfile # The container, built from the repository root
test/ # Route tests
```
## Key details
- Auth: `Authorization: Bearer …`, carrying either a session token verified against `@nestri/auth`
or a personal access token resolved from the database; or a registered host's own
`x-nestri-machine-id` and `x-nestri-machine-secret`. There is no shared secret and no credential
that stands for more than one caller, so every route resolves to a specific user or a specific
host — which is what lets a route say "the caller's own library" and mean it.
- Errors: centralized `VisibleError` → typed JSON responses.
- Settings arrive as bindings or as environment variables, and two of them have one spelling of
each: Postgres is `HYPERDRIVE` or `DATABASE_URL`, and the route to the issuer is an `AUTH`
service binding or `AUTH_INTERNAL_URL`. Nothing here branches on which it got.
- `AUTH_ISSUER_URL` is the issuer's **public** URL and never the internal one, because it is
compared literally against the `iss` claim on every token.
## Running
```sh
bun run dev # under the Workers runtime, on :3000
bun run serve # as a plain process, on $PORT (default 3000)
```
Needs a Postgres database and a reachable issuer. Full list and deployment steps:
[`docs/deploy.md`](../../docs/deploy.md).