All files / lib auth-helpers.ts

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// Internal helpers shared by the pro auth (`auth.ts`) and homeowner auth
// (`homeowner-auth.ts`) Better Auth instances. Lives in apps/api because
// it's tied to Better Auth's signup-by-phone flow and the temp-email schema
// — not generic enough to belong in @interioring/utils.
import { normalizeToE164 } from "@interioring/utils/validation/phone";
 
/**
 * Build the local-part of the temp email Better Auth assigns when a user
 * signs up by phone. Strips the "+" from E.164 (e.g. "+919876543210" →
 * "919876543210") so the resulting email has a valid local-part.
 *
 * Falls back to digit-only stripping when the input is unparseable so the
 * sign-up flow doesn't hard-fail on malformed input — the user's phone has
 * already been validated upstream by Better Auth's OTP step.
 */
export function phoneToTempEmailLocalPart(phone: string): string {
	const e164 = normalizeToE164(phone);
	return e164 ? e164.slice(1) : phone.replace(/\D/g, "");
}