11e8013b6a
- Add file-hash.ts: SHA-256 hash of uploaded files via Web Crypto API - Add datum-cache.ts: localStorage save/load/clear for datums by hash - Add settings-cache.ts: persist scalePxPerMm and includeScaleBar - Restore datums from cache on re-upload of same file - Discreet "Clear cache" button on upload page - Store fileHash and cacheRestoreMessage in Pinia store - Auto-save datums on every change via deep watcher - Track maxStepReached for clickable step navigation Co-Authored-By: Claude <noreply@anthropic.com>
49 lines
1.1 KiB
TypeScript
49 lines
1.1 KiB
TypeScript
import type { Datum } from "@/types"
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const KEY_PREFIX = "skwik-datums-"
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export function saveDatums(hash: string, datums: Datum[]): void {
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try {
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localStorage.setItem(
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KEY_PREFIX + hash,
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JSON.stringify(datums),
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)
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} catch {
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// localStorage full or unavailable — silently ignore
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}
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}
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export function loadDatums(hash: string): Datum[] | null {
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try {
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const raw = localStorage.getItem(KEY_PREFIX + hash)
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if (!raw) return null
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return JSON.parse(raw) as Datum[]
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} catch {
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return null
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}
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}
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export function clearCache(): void {
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const toRemove: string[] = []
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for (let i = 0; i < localStorage.length; i++) {
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const key = localStorage.key(i)
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if (key?.startsWith(KEY_PREFIX)) {
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toRemove.push(key)
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}
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}
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for (const key of toRemove) {
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localStorage.removeItem(key)
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}
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}
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export function getCacheSize(): number {
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let count = 0
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for (let i = 0; i < localStorage.length; i++) {
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const key = localStorage.key(i)
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if (key?.startsWith(KEY_PREFIX)) {
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count++
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}
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}
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return count
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}
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