# HELIX

> **EVOLV and every R&D strand, one helix.**
>
> The R&D showcase platform of Waterschap Brabantse Delta. EVOLV at its core,
> every innovation along the strands.

HELIX collects projects, innovations, and updates from across the R&D team in
one place — with deep links to repos, dashboards, and demos. Sign-in is gated
to the `RnD` Gitea organisation; viewing is open.

## Stack

- **SvelteKit 2** + **Svelte 5** + TypeScript
- **Tailwind v4** (CSS-first design tokens)
- **SQLite** (single file) + **Drizzle ORM**
- **Gitea OAuth2** for authoring (no passwords stored)
- Pure **SVG + CSS** helix animation — no WebGL

## Run it locally — two ways

### 1. Docker (production-like, recommended for testing)

Mirrors how the EVOLV stack is exercised locally. One command, named volume
for SQLite, healthcheck wired:

```bash
cd /path/to/helix
docker compose up -d --build         # build image + start container
docker compose logs -f helix         # tail logs
# → http://localhost:3000
```

If port 3000 is in use (Node-RED, another dev server, …) pick another:

```bash
HELIX_PORT=3030 \
  ORIGIN=http://localhost:3030 \
  GITEA_REDIRECT_URI=http://localhost:3030/auth/gitea/callback \
  docker compose up -d --build
# → http://localhost:3030
```

Useful commands:

```bash
docker compose ps                                 # status + health
docker inspect helix --format '{{.State.Health.Status}}'
docker compose exec helix sh                      # shell into the container
docker compose exec helix sqlite3 /data/helix.db  # inspect the DB
docker compose down                               # stop (keeps the volume)
docker compose down -v                            # stop + DELETE all data
```

The SQLite database lives in the **`helix_helix-data`** named volume at
`/data/helix.db`. Migrations + the idempotent seed both run on every boot.
Once you have real content, set `SEED_ON_BOOT=false` in your env to stop
re-seeding the demo entries.

### 2. Native Node (faster dev loop, hot reload)

```bash
nvm use                # .nvmrc → Node 20 (Tailwind v3 also works on 18)
cp .env.example .env   # fill in Gitea OAuth — see below

npm install
npm run db:generate    # generate drizzle/0000_*.sql from the schema
npm run db:migrate     # apply migrations to ./helix.db
npm run db:seed        # idempotent demo content
npm run dev            # http://localhost:5173
```

## Gitea OAuth setup

HELIX uses your existing Gitea identity. Create an OAuth2 application once:

1. Open <https://gitea.wbd-rd.nl/-/user/settings/applications>
2. Click **Create new OAuth2 application**
3. Application name: `HELIX (local)` (or `HELIX (production)`)
4. Redirect URI:
   - local: `http://localhost:3000/auth/gitea/callback`
   - prod:  `https://<your-helix-host>/auth/gitea/callback`
5. Click **Create application**
6. Copy the **Client ID** and **Client Secret** into your `.env`:
   ```
   GITEA_CLIENT_ID=...
   GITEA_CLIENT_SECRET=...
   ```

`GITEA_ALLOWED_ORG=RnD` restricts authoring (sign-in) to members of the `RnD`
organisation. Leave it empty to allow any authenticated Gitea user.

## Adding a dashboard embed allowlist host

`src/lib/config.ts` → `DASHBOARD_ALLOWED_HOSTS` controls which Grafana / dashboard
origins can be embedded inline on a project page. Add a hostname (no scheme,
no path) and redeploy. Hosts not on the list render as a "Open in new tab" card
instead — never blindly iframed.

## Production deploy

Same compose file as local. On the production host:

```bash
cp .env.example .env
# Set: ORIGIN=https://your-host, GITEA_REDIRECT_URI=https://your-host/auth/gitea/callback,
#      GITEA_CLIENT_ID, GITEA_CLIENT_SECRET (from a separate prod OAuth app)
docker compose up -d --build
```

Put a TLS-terminating reverse proxy (nginx/caddy/traefik) in front of port 3000.
Back up the volume periodically:

```bash
docker compose exec helix sqlite3 /data/helix.db .dump | gzip > helix-backup-$(date +%F).sql.gz
```

## Project layout

```
helix/
├── src/
│   ├── lib/
│   │   ├── components/         # Helix.svelte, ProjectCard, PostCard, Nav, Footer, DashboardEmbed
│   │   ├── server/
│   │   │   ├── db/             # Drizzle schema + client (better-sqlite3)
│   │   │   ├── auth.ts         # session token + cookie helpers
│   │   │   └── gitea.ts        # OAuth2 dance + user fetch
│   │   ├── config.ts           # site name, tagline, dashboard allowlist
│   │   └── markdown.ts         # marked wrapper + slug/id helpers
│   ├── routes/
│   │   ├── +page.svelte        # landing (helix hero + recent projects/posts)
│   │   ├── projects/           # /projects, /[slug], /new
│   │   ├── posts/              # /posts, /[slug], /new
│   │   ├── login/              # sign-in page (kicks off Gitea OAuth)
│   │   ├── logout/+server.ts   # POST → invalidates session
│   │   └── auth/gitea/         # OAuth start + callback
│   ├── app.html
│   ├── app.css                 # Tailwind v4 entry + design tokens
│   ├── app.d.ts                # Locals types
│   └── hooks.server.ts         # session hydration
├── drizzle/                    # generated migrations
├── scripts/
│   ├── migrate.js              # run pending migrations
│   └── seed.js                 # idempotent example data
├── static/favicon.svg
├── Dockerfile
├── docker-compose.yml
├── drizzle.config.ts
├── svelte.config.js
├── vite.config.ts
├── tailwind.config.ts (none — Tailwind v4 uses @theme in app.css)
├── tsconfig.json
└── package.json
```

## How to post

After signing in (top-right → Sign in → Gitea), use:

- **+ New** in the nav (or `/projects/new`) — a project: title, summary, markdown body, links
- **`/posts/new`** — a shorter update / write-up

Both are auth-gated. Anyone in `RnD` on Gitea can post.

## Contributing

This is internal R&D — open a PR against `main` on
[`gitea.wbd-rd.nl/RnD/helix`](https://gitea.wbd-rd.nl/RnD/helix).

## License

Internal — Waterschap Brabantse Delta R&D.