elpatron
81da01e786
Änderungen am Eintrag (außer Fotos) entfernen Skipper- und Crew-Signaturen automatisch. Vor dem Unterschreiben erscheinen Hinweis-Banner und Bestätigung. Co-authored-by: Cursor <cursoragent@cursor.com>
58 lines
1.8 KiB
TypeScript
58 lines
1.8 KiB
TypeScript
import type { PasskeySignature, SignatureValue } from '../types/signatures.js'
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export function isSignatureImage(value: string | undefined | null): boolean {
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return typeof value === 'string' && value.startsWith('data:image/')
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}
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export function isPasskeySignature(value: unknown): value is PasskeySignature {
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return (
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typeof value === 'object' &&
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value !== null &&
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(value as PasskeySignature).kind === 'passkey' &&
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(value as PasskeySignature).version === 1
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)
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}
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export function normalizeSignature(value: unknown): SignatureValue | undefined {
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if (value === null || value === undefined || value === '') return undefined
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if (isPasskeySignature(value)) return value
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if (typeof value === 'string') return value
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return undefined
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}
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export function hasAnySignature(
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skipper: SignatureValue | '' | undefined,
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crew: SignatureValue | '' | undefined
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): boolean {
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return !!(skipper || crew)
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}
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export function isSignatureValidForEntry(sig: PasskeySignature, entryHash: string): boolean {
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return sig.entryHash === entryHash
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}
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export interface SignatureExportLabels {
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imagePlaceholder: string
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passkeyLabel: (username: string, signedAt: string) => string
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}
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export function formatSignatureForExport(
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value: SignatureValue | undefined | null,
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labels: SignatureExportLabels
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): string {
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if (!value) return ''
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if (isPasskeySignature(value)) {
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return labels.passkeyLabel(value.username, value.signedAt)
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}
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if (isSignatureImage(value)) return labels.imagePlaceholder
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return value
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}
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export function serializeSignature(value: SignatureValue | '' | undefined): SignatureValue | undefined {
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if (!value) return undefined
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if (isPasskeySignature(value)) return value
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if (isSignatureImage(value)) return value
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const trimmed = value.trim()
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return trimmed || undefined
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}
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