Files
HealthLog/src/lib/validations/consent.ts
T
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68 lines
2.5 KiB
TypeScript

import { z } from "zod/v4";
/**
* v1.4.40 SB-10 — AI consent receipts (App-Store Guideline 5.1.2(i) +
* GDPR Art. 7 audit trail).
*
* The discriminator covers the three consent surfaces the iOS client
* collects independently:
* - `ai_full` full assistant + on-device personalisation
* - `ai_insights_only` read-only Insights generation (no Coach)
* - `ai_coach` chat-style Coach access
*
* Keeping each surface as its own row means the legal team can prove
* which exact scope the user agreed to without parsing the signed
* artefact server-side. The server stays opaque to the artefact's
* format — we accept either a base64-encoded PDF or a signed JWT, the
* audit trail *is* the storage plus the `signedAt` timestamp.
*/
export const consentKindEnum = z.enum([
"ai_full",
"ai_insights_only",
"ai_coach",
]);
export type ConsentKind = z.infer<typeof consentKindEnum>;
/**
* 64 KB upper bound on the artefact. A signed PDF receipt sits well
* under 32 KB; a signed JWT is a few hundred bytes. The cap exists so
* a misbehaving client (or a malicious one) can't fill the audit table
* with multi-megabyte rows.
*
* v1.4.40 security M1 — the cap is enforced via `Buffer.byteLength(...,
* "utf8")` because `z.string().max()` counts JavaScript string units
* (UTF-16 code units), not bytes. A UTF-8 artefact full of multi-byte
* code points (CJK, emoji) would otherwise be allowed past the 64 KB
* row budget — the database stores bytes, not code units, and the
* audit-table guarantee is byte-bounded.
*/
const ARTEFACT_MAX_BYTES = 64 * 1024;
export const consentPostBody = z.object({
kind: consentKindEnum,
artefact: z
.string()
.min(1, "artefact must not be empty")
.refine((value) => Buffer.byteLength(value, "utf8") <= ARTEFACT_MAX_BYTES, {
message: "artefact exceeds 64 KB cap (UTF-8 byte length)",
}),
signedAt: z.iso.datetime({ offset: true }).transform((s) => new Date(s)),
});
export type ConsentPostBody = z.infer<typeof consentPostBody>;
/**
* Query schema for both `/api/consent/ai/latest` GET and DELETE.
*
* Omitting `kind` on GET returns the latest active receipt per kind
* (a `Record<ConsentKind, …>` shape). Omitting it on DELETE revokes
* the latest receipt across all three kinds — handy for the iOS
* "deaktivieren alle KI-Funktionen" master toggle.
*/
export const consentLatestQuery = z.object({
kind: consentKindEnum.optional(),
});
export type ConsentLatestQuery = z.infer<typeof consentLatestQuery>;