extern "C"
{
#include "sph/sph_blake.h"
#include "sph/sph_bmw.h"
#include "sph/sph_groestl.h"
#include "sph/sph_skein.h"
#include "sph/sph_jh.h"
#include "sph/sph_keccak.h"
}

#include "miner.h"

#include "cuda_helper.h"

static uint32_t *d_hash[MAX_GPUS];

// Speicher zur Generierung der Noncevektoren für die bedingten Hashes
static uint32_t *d_branch1Nonces[MAX_GPUS];
static uint32_t *d_branch2Nonces[MAX_GPUS];
static uint32_t *d_branch3Nonces[MAX_GPUS];

extern void quark_blake512_cpu_init(int thr_id, uint32_t threads);
extern void quark_blake512_cpu_setBlock_80(int thr_id, uint32_t *pdata);
extern void quark_blake512_cpu_hash_80(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_hash);
extern void quark_blake512_cpu_hash_64(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_nonceVector, uint32_t *d_hash, int order);

extern void quark_bmw512_cpu_init(int thr_id, uint32_t threads);
extern void quark_bmw512_cpu_hash_64(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_nonceVector, uint32_t *d_hash, int order);

extern void quark_groestl512_cpu_init(int thr_id, uint32_t threads);
extern void quark_groestl512_cpu_hash_64(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_nonceVector, uint32_t *d_hash, int order);
extern void quark_doublegroestl512_cpu_hash_64(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_nonceVector, uint32_t *d_hash, int order);
extern void quark_groestl512_cpu_free(int thr_id);

extern void quark_skein512_cpu_init(int thr_id, uint32_t threads);
extern void quark_skein512_cpu_hash_64(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_nonceVector, uint32_t *d_hash, int order);

extern void quark_keccak512_cpu_init(int thr_id, uint32_t threads);
extern void quark_keccak512_cpu_hash_64(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_nonceVector, uint32_t *d_hash, int order);

extern void quark_jh512_cpu_init(int thr_id, uint32_t threads);
extern void quark_jh512_cpu_hash_64(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_nonceVector, uint32_t *d_hash, int order);

extern void quark_compactTest_cpu_init(int thr_id, uint32_t threads);
extern void quark_compactTest_cpu_free(int thr_id);
extern void quark_compactTest_cpu_hash_64(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *inpHashes, uint32_t *d_validNonceTable,
											uint32_t *d_nonces1, uint32_t *nrm1,
											uint32_t *d_nonces2, uint32_t *nrm2,
											int order);
extern void quark_compactTest_single_false_cpu_hash_64(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *inpHashes, uint32_t *d_validNonceTable,
											uint32_t *d_nonces1, uint32_t *nrm1,
											int order);

extern uint32_t cuda_check_hash_branch(int thr_id, uint32_t threads, uint32_t startNounce, uint32_t *d_nonceVector, uint32_t *d_inputHash, int order);


// Original Quarkhash Funktion aus einem miner Quelltext
extern "C" void quarkhash(void *state, const void *input)
{
    sph_blake512_context ctx_blake;
    sph_bmw512_context ctx_bmw;
    sph_groestl512_context ctx_groestl;
    sph_jh512_context ctx_jh;
    sph_keccak512_context ctx_keccak;
    sph_skein512_context ctx_skein;
    
    unsigned char hash[64];

    sph_blake512_init(&ctx_blake);
    sph_blake512 (&ctx_blake, input, 80);
    sph_blake512_close(&ctx_blake, (void*) hash);
    
    sph_bmw512_init(&ctx_bmw);
    sph_bmw512 (&ctx_bmw, (const void*) hash, 64);
    sph_bmw512_close(&ctx_bmw, (void*) hash);

    if (hash[0] & 0x8)
    {
        sph_groestl512_init(&ctx_groestl);
        sph_groestl512 (&ctx_groestl, (const void*) hash, 64);
        sph_groestl512_close(&ctx_groestl, (void*) hash);
    }
    else
    {
        sph_skein512_init(&ctx_skein);
        sph_skein512 (&ctx_skein, (const void*) hash, 64);
        sph_skein512_close(&ctx_skein, (void*) hash);
    }
    
    sph_groestl512_init(&ctx_groestl);
    sph_groestl512 (&ctx_groestl, (const void*) hash, 64);
    sph_groestl512_close(&ctx_groestl, (void*) hash);

    sph_jh512_init(&ctx_jh);
    sph_jh512 (&ctx_jh, (const void*) hash, 64);
    sph_jh512_close(&ctx_jh, (void*) hash);

    if (hash[0] & 0x8)
    {
        sph_blake512_init(&ctx_blake);
        sph_blake512 (&ctx_blake, (const void*) hash, 64);
        sph_blake512_close(&ctx_blake, (void*) hash);
    }
    else
    {
        sph_bmw512_init(&ctx_bmw);
        sph_bmw512 (&ctx_bmw, (const void*) hash, 64);
        sph_bmw512_close(&ctx_bmw, (void*) hash);
    }

    sph_keccak512_init(&ctx_keccak);
    sph_keccak512 (&ctx_keccak, (const void*) hash, 64);
    sph_keccak512_close(&ctx_keccak, (void*) hash);

    sph_skein512_init(&ctx_skein);
    sph_skein512 (&ctx_skein, (const void*) hash, 64);
    sph_skein512_close(&ctx_skein, (void*) hash);

    if (hash[0] & 0x8)
    {
        sph_keccak512_init(&ctx_keccak);
        sph_keccak512 (&ctx_keccak, (const void*) hash, 64);
        sph_keccak512_close(&ctx_keccak, (void*) hash);
    }
    else
    {
        sph_jh512_init(&ctx_jh);
        sph_jh512 (&ctx_jh, (const void*) hash, 64);
        sph_jh512_close(&ctx_jh, (void*) hash);
    }

    memcpy(state, hash, 32);
}

static bool init[MAX_GPUS] = { 0 };

extern "C" int scanhash_quark(int thr_id, struct work* work, uint32_t max_nonce, unsigned long *hashes_done)
{
	uint32_t _ALIGN(64) endiandata[20];
	uint32_t *pdata = work->data;
	uint32_t *ptarget = work->target;
	const uint32_t first_nonce = pdata[19];

	uint32_t throughput =  cuda_default_throughput(thr_id, 1 << 20); // 256*4096
	if (init[thr_id]) throughput = min(throughput, max_nonce - first_nonce);

	if (opt_benchmark)
		((uint32_t*)ptarget)[7] = 0x00F;

	if (!init[thr_id])
	{
		cudaSetDevice(device_map[thr_id]);

		// Konstanten kopieren, Speicher belegen
		CUDA_SAFE_CALL(cudaMalloc(&d_hash[thr_id], 16 * sizeof(uint32_t) * throughput));

		quark_blake512_cpu_init(thr_id, throughput);
		quark_groestl512_cpu_init(thr_id, throughput);
		quark_skein512_cpu_init(thr_id, throughput);
		quark_bmw512_cpu_init(thr_id, throughput);
		quark_keccak512_cpu_init(thr_id, throughput);
		quark_jh512_cpu_init(thr_id, throughput);
		cuda_check_cpu_init(thr_id, throughput);
		quark_compactTest_cpu_init(thr_id, throughput);

		cudaMalloc(&d_branch1Nonces[thr_id], sizeof(uint32_t)*throughput);
		cudaMalloc(&d_branch2Nonces[thr_id], sizeof(uint32_t)*throughput);
		cudaMalloc(&d_branch3Nonces[thr_id], sizeof(uint32_t)*throughput);

		init[thr_id] = true;
	}

	for (int k=0; k < 20; k++)
		be32enc(&endiandata[k], pdata[k]);

	quark_blake512_cpu_setBlock_80(thr_id, endiandata);
	cuda_check_cpu_setTarget(ptarget);

	do {
		int order = 0;
		uint32_t nrm1=0, nrm2=0, nrm3=0;

		// erstes Blake512 Hash mit CUDA
		quark_blake512_cpu_hash_80(thr_id, throughput, pdata[19], d_hash[thr_id]); order++;

		// das ist der unbedingte Branch für BMW512
		quark_bmw512_cpu_hash_64(thr_id, throughput, pdata[19], NULL, d_hash[thr_id], order++);

		quark_compactTest_single_false_cpu_hash_64(thr_id, throughput, pdata[19], d_hash[thr_id], NULL,
				d_branch3Nonces[thr_id], &nrm3,
				order++);
		
		// nur den Skein Branch weiterverfolgen
		quark_skein512_cpu_hash_64(thr_id, nrm3, pdata[19], d_branch3Nonces[thr_id], d_hash[thr_id], order++);

		// das ist der unbedingte Branch für Groestl512
		quark_groestl512_cpu_hash_64(thr_id, nrm3, pdata[19], d_branch3Nonces[thr_id], d_hash[thr_id], order++);

		// das ist der unbedingte Branch für JH512
		quark_jh512_cpu_hash_64(thr_id, nrm3, pdata[19], d_branch3Nonces[thr_id], d_hash[thr_id], order++);

		// quarkNonces in branch1 und branch2 aufsplitten gemäss if (hash[0] & 0x8)
		quark_compactTest_cpu_hash_64(thr_id, nrm3, pdata[19], d_hash[thr_id], d_branch3Nonces[thr_id],
			d_branch1Nonces[thr_id], &nrm1,
			d_branch2Nonces[thr_id], &nrm2,
			order++);

		// das ist der bedingte Branch für Blake512
		quark_blake512_cpu_hash_64(thr_id, nrm1, pdata[19], d_branch1Nonces[thr_id], d_hash[thr_id], order++);

		// das ist der bedingte Branch für Bmw512
		quark_bmw512_cpu_hash_64(thr_id, nrm2, pdata[19], d_branch2Nonces[thr_id], d_hash[thr_id], order++);

		// das ist der unbedingte Branch für Keccak512
		quark_keccak512_cpu_hash_64(thr_id, nrm3, pdata[19], d_branch3Nonces[thr_id], d_hash[thr_id], order++);

		// das ist der unbedingte Branch für Skein512
		quark_skein512_cpu_hash_64(thr_id, nrm3, pdata[19], d_branch3Nonces[thr_id], d_hash[thr_id], order++);

		// quarkNonces in branch1 und branch2 aufsplitten gemäss if (hash[0] & 0x8)
		quark_compactTest_cpu_hash_64(thr_id, nrm3, pdata[19], d_hash[thr_id], d_branch3Nonces[thr_id],
			d_branch1Nonces[thr_id], &nrm1,
			d_branch2Nonces[thr_id], &nrm2,
			order++);

		// das ist der bedingte Branch für Keccak512
		quark_keccak512_cpu_hash_64(thr_id, nrm1, pdata[19], d_branch1Nonces[thr_id], d_hash[thr_id], order++);

		// das ist der bedingte Branch für JH512
		quark_jh512_cpu_hash_64(thr_id, nrm2, pdata[19], d_branch2Nonces[thr_id], d_hash[thr_id], order++);

		*hashes_done = pdata[19] - first_nonce + 1;

		// Scan nach Gewinner Hashes auf der GPU
		uint32_t foundNonce = cuda_check_hash_branch(thr_id, nrm3, pdata[19], d_branch3Nonces[thr_id], d_hash[thr_id], order++);
		if  (foundNonce != 0xffffffff)
		{
			uint32_t vhash64[8];
			be32enc(&endiandata[19], foundNonce);
			quarkhash(vhash64, endiandata);

			if (vhash64[7] <= ptarget[7] && fulltest(vhash64, ptarget)) {
				work_set_target_ratio(work, vhash64);
				pdata[19] = foundNonce;
				return 1;
			} else {
				applog(LOG_WARNING, "GPU #%d: result for nonce %08x does not validate on CPU!", device_map[thr_id], foundNonce);
			}
		}

		pdata[19] += throughput;

	} while (pdata[19] < max_nonce && !work_restart[thr_id].restart);

	*hashes_done = pdata[19] - first_nonce + 1;
	return 0;
}

// cleanup
extern "C" void free_quark(int thr_id)
{
	if (!init[thr_id])
		return;

	cudaSetDevice(device_map[thr_id]);
	cudaDeviceSynchronize();

	cudaFree(d_hash[thr_id]);

	cudaFree(d_branch1Nonces[thr_id]);
	cudaFree(d_branch2Nonces[thr_id]);
	cudaFree(d_branch3Nonces[thr_id]);

	quark_groestl512_cpu_free(thr_id);
	quark_compactTest_cpu_free(thr_id);

	cuda_check_cpu_free(thr_id);
	init[thr_id] = false;

	cudaDeviceSynchronize();
}