# UOMysticmoon — Hero Canvas Editor Spec

> Branch: **`hero-feature`**. Build contract for the WYSIWYG portal-hero editor.
> Derived from the design doc *Hero Canvas Editor — Design Document*, **corrected
> to match the current codebase** and with the open questions resolved.
> Same workflow as the wiki upgrade: design → phased build → verify.

## 1. Goal

Let staff compose the portal hero (background image, overlay opacity, and floating
elements — text, CTA buttons, moon, badge, image) in-browser, then preview and
publish — no source edits. Layout persists as JSON in the existing `settings` table.

## 2. Locked decisions

| # | Decision |
|---|---|
| Scope | **Full v1** — background/overlay, all element types, drag/resize/z-order, draft→preview→publish (built in phases) |
| CTA buttons | **First-class `buttons` element type** (independently positioned), not baked into a text block |
| First run | **Pre-populate** the canvas with today's hero (headline, subtitle, teaser, CTAs) as editable elements so nothing changes visually until edited |
| Drag | **Native Pointer Events** (mouse/touch/pen), zero dependencies |
| Font size | Stored in **px** (fixed reference canvas) |
| Image compression | **None** server-side; client warns when a file is > ~1 MB |
| Preview | `?preview=1` renders the **draft** by reading it through the authenticated admin settings endpoint |
| Other pages | Out of scope for v1 (design allows a per-page key later) |

## 3. Corrections to the design doc (current-code reality)

1. **Public settings is a whitelist, not `getAll()`.** `GET /api/v1/public/settings`
   → `settings.getPublic()` → `PUBLIC_KEYS` in
   [settings.model.js](server/src/model/settings/settings.model.js). The doc's
   "no backend changes / picked up automatically" is wrong. **Fix:** add
   `hero_layout` to `PUBLIC_KEYS` (one line). `hero_layout_draft` stays out
   (admin-only) — which is why preview reads the draft via `api.admin.getSettings()`.
2. **Moon is a reusable component** ([MoonDot.jsx](client/src/components/MoonDot.jsx),
   props `size`/`glow`), used in logo/login/maintenance — not "only the header."
   The `moon` element reuses it; it gains an optional `color`.
3. **Route vs. nav live in different files.** `/admin/hero` route →
   [App.jsx](client/src/App.jsx); sidebar link/title → `NAV`/`TITLES` in
   [AdminLayout.jsx](client/src/routes/admin/AdminLayout.jsx).
4. **Admin content area is `maxWidth: 1000px`** — the editor canvas renders
   scaled-to-fit; percentage positions stay faithful.

Everything else in the doc matches (hardcoded `HERO_BG` + CTAs + `homepage_teaser`
in [Portal.jsx](client/src/routes/public/Portal.jsx); `updateSettings` accepts
arbitrary keys; `/admin/uploads` exists; default hero asset present; TEXT settings
columns — no schema change).

## 4. Data model — no schema change

Two `settings` keys (TEXT): `hero_layout` (live) and `hero_layout_draft` (admin).

```jsonc
{
  "version": 1,
  "background": { "image_url": null, "position_x": "left", "position_y": "center", "size": "cover" },
  "overlay": { "opacity": 0.72 },
  "elements": [
    { "id": "uuid", "type": "text_block|buttons|moon|badge|image",
      "x": 50, "y": 42, "z": 1, "anchor": "center", "props": { /* per type */ } }
  ]
}
```

Positions are **% of canvas** (reference width 1080, matching `.shell`), so the
layout adapts across viewports without breakpoint data. `version` is validated
(`=== 1`) before use; anything else falls back.

### Element props

| Type | Props |
|---|---|
| `text_block` | `lines: [{ text, tag(h1/h2/p/span), fontSize(px), color, weight }]`, `align` |
| `buttons` | `items: [{ label, to, variant(primary/ghost) }]`, `align`, `gap` |
| `moon` | `size`, `glow`, `color` |
| `badge` | `text`, `bgColor`, `textColor`, `borderRadius` |
| `image` | `src`, `width`(%), `alt` |

## 5. Backend changes
- **One line:** add `'hero_layout'` to `PUBLIC_KEYS`. No new routes/controllers —
  layout saves through the existing `PUT /admin/settings`; images via `/admin/uploads`.

## 6. Frontend changes
- **New** `client/src/components/HeroElement.jsx` — renders one element by type
  (shared by the live portal and the editor canvas).
- **New** `client/src/routes/admin/views/HeroEditor.jsx` — canvas + element tray +
  properties panel; native-pointer drag/resize; background/overlay panel; snap grid;
  auto-save draft, preview, publish, revert.
- **Edit** [Portal.jsx](client/src/routes/public/Portal.jsx) — parse `hero_layout`
  (or draft when `?preview=1` + admin), render elements, fall back to a
  `DEFAULT_LAYOUT` built from today's hero so the page is unchanged until edited.
- **Edit** [AdminLayout.jsx](client/src/routes/admin/AdminLayout.jsx) (nav) +
  [App.jsx](client/src/App.jsx) (route `/admin/hero`).
- **Edit** [MoonDot.jsx](client/src/components/MoonDot.jsx) — optional `color`.
- **No** `client/src/api/client.js` changes needed beyond what exists
  (`admin.updateSettings`, `admin.getSettings`, `admin.upload`).

## 7. Phased build (each phase: build → verify in preview → commit)

- **Phase 0 — Spec** ✅ this document.
- **Phase 1 — Data path & renderer** ✅ (verified 2026-06-28). `hero_layout`
  whitelisted; `HeroElement.jsx`; Portal renders the layout with a `DEFAULT_LAYOUT`
  fallback. Default render matches the old hero; publishing a layout re-renders;
  draft key not exposed publicly. Shared helpers moved to `client/src/lib/heroLayout.js`.
- **Phase 2 — Editor shell + background/overlay** ✅ (verified 2026-06-28).
  `/admin/hero` view + sidebar nav; canvas live-preview; background upload + 3×3
  position + overlay opacity; debounced draft auto-save; publish; `?preview=1`
  reads the draft (admin) with a banner; revert. Verified: overlay/position update
  the canvas, auto-save writes the draft, publish writes live, preview shows the
  draft while the normal portal shows live.
- **Phase 3 — Elements: select / drag / text_block / buttons** ✅ (verified
  2026-06-28). Element tray (+ Text / + Buttons); click-to-select with outline;
  native Pointer Events drag (% of canvas); Delete key + panel delete; z-order
  (send back / bring forward); text_block line editor (text/tag/size/color/bold,
  add/remove lines, align) and buttons editor (label/path/variant, add/remove).
  Verified: select shows the line editor, editing a line updates the canvas live,
  drag moved 50%→65%, add→3/delete→2 elements, empty-canvas click deselects.
- **Phase 4 — moon + badge + image + resize + snap grid.** Remaining element types,
  resize handles, 8px snap. *Exit:* place a moon and an uploaded image, resize, publish.

## 8. Edge cases (from the doc, carried forward)
- `JSON.parse` wrapped in try/catch + `version` check → fall back to `DEFAULT_LAYOUT`.
- Element ids via `crypto.randomUUID()` (never array index).
- Empty `elements` → render `DEFAULT_LAYOUT` so the hero is never blank.
- Last-write-wins on concurrent admin edits (acceptable for this shard).
- Client-side warning for background files > ~1 MB (no hard block; 8 MB server cap).