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portal/README.md
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Bendik Aagaard LynghaugandClaude Sonnet 5 34a027e17b
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README: what the engine provides
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-12 23:30:29 +02:00

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# portal
The question runtime behind [uhhm.no](https://uhhm.no). Every page,
form, review desk, and state machine it serves is declared in the
[`questions`](https://project.uhhm.no/uhhm/questions) content repo —
this codebase is the engine that renders, enforces, and records, and
it special-cases none of it.
## What the engine provides
- **Content-driven pages** (`src/content.rs`, `src/app.rs`): YAML
loaded from Gitea at boot and hot-swapped on a NATS reload signal;
a bad push keeps the last-good content serving. A page's `id` is
its URL; `qualifies` gates it to a Kanidm group.
- **State machines as content** (`src/aggregates/`): `aggregates.yaml`
declares each bucket's states and legal transitions; the engine
replays a record's event history and refuses undeclared moves, with
optimistic concurrency (CAS on the event log's sequence) against
racing decisions. An empty history reseeds from the KV projection,
so wiping the event stream strands nothing.
- **Durable events + projections** (`src/events/`, `src/answers.rs`):
every submission and decision appends to a JetStream event log and
projects into a NATS KV bucket pages read back; every one also
publishes on `portal.answers.submitted` for automations (n8n) to
react to.
- **Answer chains** (`src/chain.rs`): each submission hashes its
parent(s), so a visitor's path through the questions is a verifiable
lineage; `?chain=` links carry it, and self-service transitions
(unsubscribe) authorize by holding one.
- **Live resources** (`src/resource.rs`): content can pull a KV
bucket, Gitea starred/org repos, or any public JSON URL (SSRF
fail-closed), reshaped by a content-declared `jq` filter.
- **Review desks**: any Kv resource with `transitions` renders rows
with per-state action buttons and one shared confirm per
alternative — owners walk records through their graphs without
bespoke UI per bucket.
## Binaries
- `portal` — the server (Leptos SSR + hydrate, Axum underneath).
- `question_lint` — headless content validation, run by the
`questions` repo's CI against a prebuilt copy this repo's deploy
publishes; also works offline: `question_lint --path <dir>`.
## Development
```sh
cargo leptos build # full app (server + wasm)
cargo test --features ssr # engine tests
cargo build --features ssr --bin question_lint
```
Runtime configuration is env vars (see `src/main.rs` and
`.gitea/workflows/deploy.yml`): `NATS_URL`, `CONTENT_REPO`/
`CONTENT_BRANCH`, Kanidm OIDC (`KANIDM_URL`, `OAUTH2_CLIENT_*`),
optional `GARAGE_*` for uploads, `GITEA_API_TOKEN` for authenticated
resource pulls, `AUTOMATION_READ_TOKEN` for the automation KV read
endpoint.
## Deploy
Pushing `main` triggers `.gitea/workflows/deploy.yml` on the
bare-metal runner: release build, ship to
`/srv/app/uhhm-portal/releases/<sha>`, flip the `current` symlink,
restart `app@uhhm-portal`, reload Caddy. Content changes never come
through here — they hot-reload live from the `questions` repo.