// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include "primitives/pureheader.h"

#include "chainparams.h"
#include "crypto/hashgroestl.h"
#include "crypto/hashqubit.h"
#include "crypto/hashskein.h"
#include "crypto/scrypt.h"
#include "crypto/yescrypt.h"
#include "hash.h"
#include "utilstrencodings.h"

uint256 CPureBlockHeader::GetHash() const
{
    return SerializeHash(*this);
}

uint256 CPureBlockHeader::GetPoWHash(int algo) const
{
    switch(algo)
    {
        case ALGO_SHA256D:
            return GetHash();
        case ALGO_SCRYPT:
        {
            uint256 thash;
            scrypt_1024_1_1_256(BEGIN(nVersion), BEGIN(thash));
            return thash;
        }
        case ALGO_GROESTL:
            return HashGroestl(BEGIN(nVersion), END(nNonce));
        case ALGO_SKEIN:
            return HashSkein(BEGIN(nVersion), END(nNonce));
        case ALGO_QUBIT:
            return HashQubit(BEGIN(nVersion), END(nNonce));
        case ALGO_YESCRYPT:
        {
            uint256 thash;
            yescrypt_hash(BEGIN(nVersion), BEGIN(thash));
            return thash;
        }
    }
    return GetHash();
}

int GetAlgo(int nVersion)
{
    switch (nVersion & BLOCK_VERSION_ALGO)
    {
        case 0:
            return ALGO_SHA256D;
        case BLOCK_VERSION_SCRYPT:
            return ALGO_SCRYPT;
        case BLOCK_VERSION_GROESTL:
            return ALGO_GROESTL;
        case BLOCK_VERSION_SKEIN:
            return ALGO_SKEIN;
        case BLOCK_VERSION_QUBIT:
            return ALGO_QUBIT;
        case BLOCK_VERSION_YESCRYPT:
            return ALGO_YESCRYPT;
    }
    return ALGO_SHA256D;
}

std::string GetAlgoName(int Algo)
{
    switch (Algo)
    {
        case ALGO_SHA256D:
            return std::string("sha256d");
        case ALGO_SCRYPT:
            return std::string("scrypt");
        case ALGO_GROESTL:
            return std::string("groestl");
        case ALGO_SKEIN:
            return std::string("skein");
        case ALGO_QUBIT:
            return std::string("qubit");
        case ALGO_YESCRYPT:
            return std::string("yescrypt");
    }
    return std::string("unknown");       
}