Pouzor
bf8551015c
Cleared canvas re-showed the demo, and backend errors silently fell back to demo — hiding real outages and forcing users to wipe demo nodes before bulk edits. Now: - backend load reports `initialized` (CanvasState row exists = ever saved) - decideCanvasLoad() picks real | empty | demo; empty is kept empty - backend down/error shows an error banner + toast, never the demo - data-new-user flag reserved as the Getting Started walkthrough hook ha-relevant: yes
26 lines
1.1 KiB
TypeScript
26 lines
1.1 KiB
TypeScript
/**
|
|
* Decides what to render when a design's canvas loads.
|
|
*
|
|
* Three cases must stay distinct (issue: clearing a canvas re-showed the demo):
|
|
* - `real` → the canvas has saved nodes; render them.
|
|
* - `empty` → the canvas is initialized (ever saved / explicitly created) but
|
|
* has no nodes; the user intentionally cleared it — keep it empty.
|
|
* - `demo` → brand-new, never-initialized canvas; seed the demo so first-time
|
|
* users see an example (and, later, the Getting Started walkthrough).
|
|
*
|
|
* Backend errors are handled by the caller, NOT here — a failed load must show an
|
|
* error and must never fall back to `demo` (that would hide the real failure).
|
|
*/
|
|
export type CanvasLoadMode = 'real' | 'empty' | 'demo'
|
|
|
|
export function decideCanvasLoad(hasNodes: boolean, initialized: boolean): CanvasLoadMode {
|
|
if (hasNodes) return 'real'
|
|
if (initialized) return 'empty'
|
|
return 'demo'
|
|
}
|
|
|
|
/** A new user is one who lands on the demo canvas — the Getting Started hook. */
|
|
export function isNewUserCanvas(mode: CanvasLoadMode): boolean {
|
|
return mode === 'demo'
|
|
}
|