77 lines
2.8 KiB
TypeScript
77 lines
2.8 KiB
TypeScript
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/**
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* Workspace draft — keep an anonymous user's in-progress circuit + code across
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* a full-page navigation to /login and back.
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*
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* The Sign-in links mount in a separate React root without Router context, so
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* they navigate with `window.location.assign` (full page load), which wipes
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* the in-memory Zustand stores. Before that navigation we stash the whole
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* workspace (reusing the lossless `.vlx` serialisation) into sessionStorage;
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* when the editor remounts after login it restores the stash. sessionStorage
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* is same-tab and survives the reload, and is discarded when the tab closes.
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*
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* Scoped strictly to the login round-trip via a one-shot restore flag — it is
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* NOT a general autosave, so a normal reload never resurrects an old draft.
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*/
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import type { BoardInstance } from '../types/board';
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import { useProjectStore } from '../store/useProjectStore';
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import { useSimulatorStore } from '../store/useSimulatorStore';
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import { buildVlxPayload } from './vlxFile';
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const DRAFT_KEY = 'velxio_ws_draft';
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const RESTORE_FLAG = 'velxio_ws_restore';
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/** True when the canvas holds something worth preserving (a real build, not
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* just the empty starter board). */
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export function workspaceHasWork(): boolean {
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const sim = useSimulatorStore.getState();
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return sim.components.length > 0 || sim.wires.length > 0;
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}
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/**
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* Snapshot the current workspace and mark it for restore on the next editor
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* mount. Call right before a full-page navigation to /login. No-op when there
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* is nothing worth keeping or storage is unavailable.
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*/
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export function stashWorkspaceForAuth(): void {
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try {
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if (!workspaceHasWork()) return;
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sessionStorage.setItem(DRAFT_KEY, JSON.stringify(buildVlxPayload()));
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sessionStorage.setItem(RESTORE_FLAG, '1');
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} catch {
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// storage full / disabled — degrade to losing the draft, never throw.
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}
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}
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/**
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* If a stash is pending (set before the login redirect), load it into the
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* stores and clear it. Runs once on editor mount. Skips when a named project
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* is already loaded so it never clobbers one. Returns whether it restored.
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*/
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export function restoreStashedWorkspace(): boolean {
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let raw: string | null = null;
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try {
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if (sessionStorage.getItem(RESTORE_FLAG) !== '1') return false;
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sessionStorage.removeItem(RESTORE_FLAG);
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raw = sessionStorage.getItem(DRAFT_KEY);
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sessionStorage.removeItem(DRAFT_KEY);
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} catch {
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return false;
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}
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if (!raw) return false;
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if (useProjectStore.getState().currentProject) return false;
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try {
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const payload = JSON.parse(raw);
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useSimulatorStore.getState().loadProjectState({
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boards: payload.boards as unknown as BoardInstance[],
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fileGroups: payload.fileGroups,
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components: payload.components,
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wires: payload.wires,
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activeBoardId: payload.activeBoardId,
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});
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return true;
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} catch {
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return false;
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}
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}
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