// Copyright (c) 2017-2019, The Monero Project
// 
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
// 
// 1. Redistributions of source code must retain the above copyright notice, this list of
//    conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
//    of conditions and the following disclaimer in the documentation and/or other
//    materials provided with the distribution.
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
//    used to endorse or promote products derived from this software without specific
//    prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//

#pragma once

#include <cstddef>
#include <string>

#include "ringct/rctOps.h"
#include "crypto/crypto.h"
#include "cryptonote_basic/account.h"

#include "device.hpp"

namespace hw {

    /* Note about debug:
     * To debug Device you can def the following :
     * #define DEBUG_HWDEVICE
     *   Activate debug mechanism:
     *     - Add more trace
     *     - All computation done by device are checked by default device.
     *       Required IODUMMYCRYPT_HWDEVICE or IONOCRYPT_HWDEVICE for fully working
     * #define IODUMMYCRYPT_HWDEVICE 1
     *     - It assumes sensitive data encryption is is off on device side. a XOR with 0x55. This allow Ledger Class to make check on clear value
     * #define IONOCRYPT_HWDEVICE 1
     *     - It assumes sensitive data encryption is off on device side.
     */

    void log_hexbuffer(std::string_view msg, const void* buff, size_t len);
    void log_message(std::string_view msg, std::string_view info );

    #ifdef WITH_DEVICE_LEDGER    
    namespace ledger {

        inline constexpr unsigned const char dummy_view_key[32] = {0};
        inline constexpr unsigned const char dummy_spend_key[32] = {
          0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
          0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};

        #ifdef DEBUG_HWDEVICE

        extern crypto::secret_key dbg_viewkey;
        extern crypto::secret_key dbg_spendkey;

        void decrypt(char* buf, size_t len);
        crypto::key_derivation decrypt(const crypto::key_derivation &derivation) ;
        cryptonote::account_keys decrypt(const cryptonote::account_keys& keys) ;
        crypto::secret_key decrypt(const crypto::secret_key &sec) ;
        rct::key decrypt(const rct::key &sec);
        crypto::ec_scalar decrypt(const crypto::ec_scalar &res);

        void check32(const std::string &msg, const std::string &info, const void *h, const void *d, bool crypted=false);
        void check8(const std::string &msg, const std::string &info, const void *h, const void *d,  bool crypted=false);

        void set_check_verbose(bool verbose);
        #endif
    }
    #endif
}
