import { z } from 'zod';

const hex64 = z.string().regex(/^[a-f0-9]{64}$/);
const uuid = z.string().uuid();
const network = z.enum(['wikideck-randomx-mainnet-1', 'wikideck-randomx-testnet-6']);

/** Wallet-signed request to allocate the caller's own immutable Monero subaddress. */
export const moneroDepositAddressRequestSchema = z.object({
  version: z.literal(1),
  network,
  chainId: hex64,
  custodianId: uuid,
  actor: hex64,
  publicKey: z.string().min(1).max(256),
  requestId: uuid,
  walletGenerationId: uuid,
  walletFingerprint: hex64,
  accountIndex: z.number().int().min(0).max(0xffff_ffff).safe(),
  expiresAt: z.number().int().nonnegative().safe(),
  signature: z.string().min(1).max(256),
}).strict();

export type MoneroDepositAddressRequest = z.infer<typeof moneroDepositAddressRequestSchema>;
export type MoneroDepositAddressRequestUnsigned = Omit<MoneroDepositAddressRequest, 'signature'>;

/** Domain-separated, canonical terms for requesting one beneficiary-bound deposit address. */
export function moneroDepositAddressMessage(request: MoneroDepositAddressRequestUnsigned): string {
  return JSON.stringify([
    'wikideck-monero-deposit-address-v1', request.version, request.network, request.chainId,
    request.custodianId, request.actor, request.publicKey, request.requestId,
    request.walletGenerationId, request.walletFingerprint, request.accountIndex, request.expiresAt,
  ]);
}