const EXT_ID_U256_BE* = 51

const EXT_ID_U256_LE* = 50


type StorageProofs* {.incompleteStruct.} = object

type Buffer* = object
  data: ptr uint8
  len: uint

type ProofCtx* = object
  proof: Buffer
  public_inputs: Buffer

## # Safety
#
# Use on a valid pointer to ProofCtx or panics
proc free_proof_ctx*(ctx: ptr ProofCtx) {.importc: "free_proof_ctx".}

## # Safety
#
# Use on a valid pointer to StorageProofs or panics
proc free_prover*(prover: ptr StorageProofs) {.importc: "free_prover".}

## # Safety
#
# Construct a StorageProofs object
proc init_storage_proofs*(r1cs: Buffer,
                          wasm: Buffer,
                          zkey: ptr Buffer): (ptr StorageProofs) {.importc: "init_storage_proofs".}

## # Safety
#
# Use after constructing a StorageProofs object with init
proc prove*(prover_ptr: ptr StorageProofs,
            chunks: ptr Buffer,
            siblings: ptr Buffer,
            hashes: ptr Buffer,
            path: ptr int32,
            path_len: uint,
            pubkey: ptr Buffer,
            root: ptr Buffer,
            salt: ptr Buffer): (ptr ProofCtx) {.importc: "prove".}

## # Safety
#
# Use after constructing a StorageProofs object with init
proc prove_mpack_ext*(prover_ptr: ptr StorageProofs,
                      args: ptr Buffer): (ptr ProofCtx) {.importc: "prove_mpack_ext".}

## # Safety
#
# Should be called on a valid proof and public inputs previously generated by prove
proc verify*(prover_ptr: ptr StorageProofs,
             proof: ptr Buffer,
             public_inputs: ptr Buffer): bool {.importc: "verify".}