serverAppConfigs/docs/Infrastructure/Homepage.md

# Homepage

A password-protected web site on Dankclaw lists the services that are up, with a short description of each and a link to both the service and its usage documentation.

**Served by:** Caddy, `file_server` + `basicauth` — **Docs:** this page

## Status — 2026-08-23: deployed to production

The homepage is live on Dankclaw. `./scripts/deploy.sh dankclaw` copies the static assets to `/srv/homepage/`, installs the status checker (systemd timer, every 3 min, writes `status.json`), writes `deployed.js` (the last master deployment datetime), renders the Caddyfile (both basicauth hashes from the host `.env`), reloads Caddy, and checks health. 116 tests pass. The Caddyfile auth uses `handle` blocks (see [Auth](#auth)); the caddy container mounts the host's `/srv/homepage` (not the repo source) so the generated files serve.

To change the operator password: regenerate `CADDY_ADMIN_HASH` (`caddy hash-password`) in the host `.env`, then redeploy. The per-service `/docs/` pages, the *arr stack, and the optional `/how/` page remain separate threads.

## Design decision — 2026-08-22

The live up/down check runs server-side. A checker on Dankclaw probes each backend and writes a same-origin `status.json`. The page fetches only that file and renders the badges. The browser never calls a backend directly. The checker runs as a systemd timer every 3 minutes.

The site has two pages. The root lists user-facing services only, with no host labels. An `/admin/` subpage lists the admin and infrastructure services behind a separate password for the operator. Gitea is a user service. Hermes is an admin service. A "how it is built" page for visitors is deferred (Q6).

The client-side probe design is blocked in this topology. The page origin is `https://dankclaw.franksdank.cloud`. The service URLs are `http://<name>.franksdank.cloud`. That is cross-origin, mixed content, and auth-gated (HTTP 401). All three fail a browser `fetch`.

Intended direction: move to client-side probing. Serve every service as a same-origin `https` path under `dankclaw.franksdank.cloud`. Add a health endpoint and CORS headers to each backend. Then the page probes each service directly. Keep this note until that shift is complete.

## Structure

The site has two pages. The root page lists the user services. The `/admin/` page lists the admin and infrastructure services. The optional `/how/` page is deferred (Q6).

```mermaid
graph TD
    subgraph site["dankclaw.franksdank.cloud (Caddy)"]
        ROOT["/  user services<br/>(shared password)"]
        ADMIN["/admin/  admin services<br/>(operator password)"]
        HOW["/how/  how it is built<br/>(deferred)"]
        STATUS["/status.json"]
    end
    TIMER["systemd timer<br/>every 3 minutes"]
    CHECKER["checker script<br/>probes each backend"]
    BACKENDS["backends on both hosts"]
    TIMER --> CHECKER
    CHECKER -->|writes| STATUS
    STATUS -->|polled| ROOT
    STATUS -->|polled| ADMIN
    CHECKER -->|probes| BACKENDS
```

## Status model

Each service shows one of three states.

```mermaid
stateDiagram-v2
    [*] --> Up
    [*] --> Down
    [*] --> WIP
    Up --> Down: probe fails
    Down --> Up: probe succeeds
    WIP --> Up: work completes
```

- **Up** — the probe reached the backend.
- **Down** — the probe failed (connection refused or timeout).
- **WIP** — a static override. The service is intentionally not finished. The checker does not probe it.

## Checker

The checker runs on Dankclaw as a systemd timer. Every run probes each backend directly, then writes `status.json`. It probes the backend `host:port`, not the Caddy site. A Caddy `502` or `401` cannot tell up from down. The probe method is per service (`tcp` or `http`). The timeout is 5 s. The page reads `status.json` once on load. It does not auto-refresh.

```mermaid
flowchart TD
    A[timer fires] --> B[read service config]
    B --> C{for each service}
    C -->|wip| D[mark WIP]
    C -->|probe| E[probe: tcp or http]
    E -->|connected| F[mark Up]
    E -->|refused / timeout| G[mark Down]
    D --> H[write status.json]
    F --> H
    G --> H
```

## Service classification

**User services** (root page): SearXNG, ComfyUI, OpenWebUI, Gitea, Calibre-Web, RomM, Copyparty, Plex, Jellyfin.

**Admin services** (`/admin/`): Hermes, Grafana, Prometheus, Loki, Caddy, Pi-hole, Gluetun, the LLM fleet, and the low-level backends (mariadb, redis, Postgres, node-exporter, alloy). The backends show status only. They get a link only where a UI is meaningful.

**Excluded for now:** the *arr stack (Radarr, Sonarr, Lidarr, Readarr, Prowlarr, qBittorrent). It is not started. It is a separate effort, possibly on a different host.

## Layout

```
shared/homepage/
├── index.html        # root page (user services)
├── admin.html        # admin + infrastructure services
├── how.html          # deferred (Q6)
├── style.css         # full theme; a toggle strips to bare HTML
├── app.js            # loads status.json once, renders the panels
├── services.json     # service config (user + admin)
└── fonts/            # Terminus (woff2) for @font-face
```

`status.json` is generated at runtime in `/srv/homepage/`. It is not committed.

## Rendering

The page renders a **grid of TUI-style panels** — one panel per service. Each panel shows the state badge, the name, the description, and the `Open` and `Docs` links. A summary line at the top counts the states. The footer shows the last master deployment datetime (Q43).

The page reads `status.json` **once on load**. It does not auto-refresh (Q41).

Styling is **toggleable** (Q27). The default is the full terminal theme. A toggle strips the page to bare, unstyled HTML (motherfuckingwebsite.com style). The page does not alter the user's cursor (Q28).

## Auth

Caddy wraps the site with HTTP basic auth. The root page uses the shared password. The `/admin/` page uses a second, operator-only password. The shared data + assets accept **both** (the browser reuses the page's credential for the data fetches). The hashes come from the host `.env` (git-ignored). Do not commit the hash or the password.

The pages are served from `handle` blocks, not a top-level `rewrite`. Caddy **sorts** top-level directives, so a `rewrite` runs before a `basicauth`; the rewrite would change `/admin/` to `/admin.html` and the path-based auth matchers would then see the rewritten path and apply the wrong block. A `handle` block preserves file order, so the auth is checked on the original path.

```
dankclaw.franksdank.cloud {
    root * /srv/homepage

    handle /admin* {
        basicauth {
            frank REPLACE_WITH_ADMIN_HASH
        }
        try_files /admin.html
        file_server
    }

    @data path /services.json /status.json /app.js /style.css /deployed.js
    handle @data {
        basicauth {
            dank REPLACE_WITH_HASH
            frank REPLACE_WITH_ADMIN_HASH
        }
        file_server
    }

    handle {
        basicauth {
            dank REPLACE_WITH_HASH
        }
        try_files /index.html
        file_server
    }
}
```

A `handle` inline matcher is a single token; the multi-path `@data` match is a named matcher. The caddy container mounts the host's `/srv/homepage` (where the deploy writes the static files and the checker writes `status.json`), not the repo's `shared/homepage`. A compose change needs a container recreate (`podman compose up -d caddy`), not a reload. The Caddyfile syntax is documented in the agent knowledge base (`~/.pi/agent/docs/caddy/caddyfile.md`).

## Service entry format

```json
{
  "name": "SearXNG",
  "category": "user",
  "description": "Privacy-respecting metasearch engine.",
  "url": "http://search.franksdank.cloud",
  "docs": "/docs/searxng/",
  "probe": "127.0.0.1:8081",
  "method": "http",
  "wip": false,
  "showLink": true
}
```

- `category` — `user` or `admin`. Selects the page.
- `url` — the "Open" link (the Caddy site).
- `docs` — the per-service docs page (`/docs/<svc>/`).
- `probe` — the backend `host:port` the checker probes.
- `method` — `tcp` or `http`. The probe type for this service (Q10).
- `wip` — when true, the badge shows WIP and the checker skips the probe.
- `showLink` — when false, the panel shows status only (no "Open" link).

## Deployment and testing

The deploy is **git-driven**. Master always reflects the currently deployed state (Q33). `deploy.sh` copies the assets to `/srv/homepage/`, installs the checker timer, renders the Caddyfile (both hashes), and reloads Caddy. It stamps the deployment datetime the footer shows (Q43).

The build is **full TDD** (Q36–Q38). Tests exist before the code: the checker (a fake up port, a down port, a WIP service, and the JSON schema), the pages and config (the `services.json` schema, `caddy validate`, the `status.json` reference), and the security check (two distinct basicauth hashes).

## Per-service docs (separate workstream)

Each service gets a docs page at `/docs/<svc>/` (Q30). The content is a **how-to for a regular user** — no maintenance details (Q29). The pages are password-protected by the same auth as the homepage section they belong to (Q31). They are built as each service goes active (Q32). The `docs` link on a service points to its page. The existing reference docs in `docs/` are not linked from the homepage. They may contain secrets (Q22).

## See Also

- [[Homepage Design Grilling]] — the decision log
- [[Caddy]] — the proxy that serves it
- [[Dankclaw Stack]], [[Dankserver Stack]] — the services it lists