from std/openssl import
  EVP_PKEY,
  PEVP_MD,
  PX509_STORE

from picotls import
  ptls_cipher_suite_t,
  ptls_key_exchange_algorithm_t,
  ptls_sign_certificate_t,
  ptls_verify_certificate_t

type
  ptls_openssl_signature_scheme_t* {.importc: "struct st_ptls_openssl_signature_scheme_t",
                                     header: "picotls/openssl.h", bycopy.} = object
    scheme_id*: uint16
    scheme_md*: PEVP_MD

  ptls_openssl_sign_certificate_t* {.importc, header: "picotls/openssl.h", bycopy.} = object
    super*: ptls_sign_certificate_t
    key*: EVP_PKEY
    schemes*: array[4, ptls_openssl_signature_scheme_t]

  ptls_openssl_verify_certificate_t* {.importc, header: "picotls/openssl.h", bycopy.} = object
    super*: ptls_verify_certificate_t
    cert_store*: PX509_STORE

proc ptls_openssl_random_bytes*(buf: pointer, len: csize_t) {.cdecl, importc,
                               header: "picotls/openssl.h".}

proc ptls_openssl_init_verifiy_certificate*(self: ptr ptls_openssl_verify_certificate_t,
                                            store: PX509_STORE): cint {.cdecl,
                                           importc, header: "picotls/openssl.h".}

proc ptls_openssl_init_sign_certificate*(self: ptr ptls_openssl_sign_certificate_t,
                                         key: EVP_PKEY): cint {.cdecl, importc,
                                        header: "picotls/openssl.h".}

var ptls_openssl_cipher_suites* {.importc, header: "picotls/openssl.h".}: ptr ptr ptls_cipher_suite_t

var ptls_openssl_key_exchanges* {.importc, header: "picotls/openssl.h".}: ptr ptr ptls_key_exchange_algorithm_t