import { ProofStatus, SignatureProof } from "@notabene/javascript-sdk";
import { Secp256k1, Hex, PersonalMessage, Signature, Address } from "ox";

export function verifyEIP191(
  address: Hex.Hex,
  message: string,
  proof: Hex.Hex,
): boolean {
  try {
    const payload = PersonalMessage.getSignPayload(Hex.fromString(message));
    const signature = Signature.fromHex(proof);
    const publicKey = Secp256k1.recoverPublicKey({ payload, signature });
    const recovered = Address.checksum(Address.fromPublicKey(publicKey));
    return recovered.toString() === Address.checksum(address);
  // eslint-disable-next-line @typescript-eslint/no-unused-vars
  } catch (error) {
    return false;
  }
}

export async function verifyPersonalSignEIP191(
  proof: SignatureProof,
): Promise<SignatureProof> {
  const [ns, , address] = proof.address.split(/:/);
  if (ns !== "eip155") return { ...proof, status: ProofStatus.FAILED };

  const verified = verifyEIP191(
    address as Hex.Hex,
    proof.attestation,
    proof.proof as Hex.Hex,
  );
  return {
    ...proof,
    status: verified ? ProofStatus.VERIFIED : ProofStatus.FAILED,
  };
}