#include "x15-gate.h"

#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>

#include "algo/blake/sph_blake.h"
#include "algo/bmw/sph_bmw.h"
#include "algo/groestl/sph_groestl.h"
#include "algo/jh/sph_jh.h"
#include "algo/keccak/sph_keccak.h"
#include "algo/skein/sph_skein.h"
#include "algo/shavite/sph_shavite.h"
#include "algo/luffa/sph_luffa.h"
#include "algo/cubehash/sph_cubehash.h"
#include "algo/simd/sph_simd.h"
#include "algo/echo/sph_echo.h"
#include "algo/hamsi/sph_hamsi.h"
#include "algo/fugue/sph_fugue.h"
#include "algo/shabal/sph_shabal.h"
#include "algo/whirlpool/sph_whirlpool.h"

#include "algo/luffa/luffa_for_sse2.h" 
#include "algo/cubehash/cubehash_sse2.h"
#include "algo/simd/nist.h"
#include "algo/blake/sse2/blake.c"
#include "algo/bmw/sse2/bmw.c"
#include "algo/keccak/sse2/keccak.c"
#include "algo/skein/sse2/skein.c"
#include "algo/jh/sse2/jh_sse2_opt64.h"

#ifndef NO_AES_NI
  #include "algo/echo/aes_ni/hash_api.h"
  #include "algo/groestl/aes_ni/hash-groestl.h"
#endif

typedef struct {
#ifdef NO_AES_NI
        sph_groestl512_context   groestl;
        sph_echo512_context      echo;
#else
        hashState_echo          echo;
        hashState_groestl       groestl;
#endif
        hashState_luffa         luffa;
        cubehashParam           cubehash;
        sph_shavite512_context  shavite;
        hashState_sd            simd;
        sph_hamsi512_context    hamsi;
        sph_fugue512_context    fugue;
        sph_shabal512_context   shabal;
        sph_whirlpool_context   whirlpool;
} x15_ctx_holder;

x15_ctx_holder x15_ctx;

void init_x15_ctx()
{
#ifdef NO_AES_NI
        sph_groestl512_init(&x15_ctx.groestl);
        sph_echo512_init(&x15_ctx.echo);
#else
        init_echo( &x15_ctx.echo, 512 );
        init_groestl( &x15_ctx.groestl, 64 );
#endif
        init_luffa( &x15_ctx.luffa, 512 );
        cubehashInit( &x15_ctx.cubehash, 512, 16, 32 );
        sph_shavite512_init( &x15_ctx.shavite );
        init_sd( &x15_ctx.simd, 512 );
        sph_hamsi512_init( &x15_ctx.hamsi );
        sph_fugue512_init( &x15_ctx.fugue );
        sph_shabal512_init( &x15_ctx.shabal );
        sph_whirlpool_init( &x15_ctx.whirlpool );
};

void x15hash(void *output, const void *input)
{
	unsigned char hash[128] __attribute__ ((aligned (32)));
	#define hashB hash+64

        x15_ctx_holder ctx;
        memcpy( &ctx, &x15_ctx, sizeof(x15_ctx) );

        unsigned char hashbuf[128];
        size_t hashptr;
        sph_u64 hashctA;
        sph_u64 hashctB;

        //---blake1---
        
        DECL_BLK;
        BLK_I;
        BLK_W;
        BLK_C;

        //---bmw2---
        DECL_BMW;
        BMW_I;
        BMW_U;

        #define M(x)    sph_dec64le_aligned(data + 8 * (x))
        #define H(x)    (h[x])
        #define dH(x)   (dh[x])

        BMW_C;

        #undef M
        #undef H
        #undef dH

        //---groestl----

#ifdef NO_AES_NI
        sph_groestl512(&ctx.groestl, hash, 64);
        sph_groestl512_close(&ctx.groestl, hash);
#else
        update_and_final_groestl( &ctx.groestl, (char*)hash,
                                  (const char*)hash, 512 );
#endif

        //---skein4---

        DECL_SKN;
        SKN_I;
        SKN_U;
        SKN_C;

        //---jh5------

        DECL_JH;
        JH_H;

        //---keccak6---

        DECL_KEC;
        KEC_I;
        KEC_U;
        KEC_C;

        //--- luffa7
        update_and_final_luffa( &ctx.luffa, (BitSequence*)hashB,
                                (const BitSequence*)hash, 64 );

        // 8 Cube
        cubehashUpdateDigest( &ctx.cubehash, (byte*) hash,
                              (const byte*)hashB, 64 );

        // 9 Shavite
        sph_shavite512( &ctx.shavite, hash, 64);
        sph_shavite512_close( &ctx.shavite, hashB);

        // 10 Simd
        update_final_sd( &ctx.simd, (BitSequence *)hash,
                         (const BitSequence *)hashB, 512 );

        //11---echo---

#ifdef NO_AES_NI
        sph_echo512(&ctx.echo, hash, 64);
        sph_echo512_close(&ctx.echo, hashB);
#else
        update_final_echo ( &ctx.echo, (BitSequence *)hashB,
                            (const BitSequence *)hash, 512 );
#endif

        // X13 algos
        // 12 Hamsi
        sph_hamsi512(&ctx.hamsi, hashB, 64);
        sph_hamsi512_close(&ctx.hamsi, hash);

        // 13 Fugue
         sph_fugue512(&ctx.fugue, hash, 64);
        sph_fugue512_close(&ctx.fugue, hashB);

        // X14 Shabal
        sph_shabal512(&ctx.shabal, hashB, 64);
        sph_shabal512_close(&ctx.shabal, hash);
       
        // X15 Whirlpool
	sph_whirlpool(&ctx.whirlpool, hash, 64);
	sph_whirlpool_close(&ctx.whirlpool, hashB);


        asm volatile ("emms");
	memcpy(output, hashB, 32);
}

int scanhash_x15( int thr_id, struct work *work, uint32_t max_nonce,
                  uint64_t *hashes_done, struct thr_info *mythr )
{
        uint32_t endiandata[20] __attribute__((aligned(64)));
        uint32_t hash64[8] __attribute__((aligned(64)));
        uint32_t *pdata = work->data;
        uint32_t *ptarget = work->target;
	uint32_t n = pdata[19] - 1;
	const uint32_t first_nonce = pdata[19];
	const uint32_t Htarg = ptarget[7];
   /* int */ thr_id = mythr->id;  // thr_id arg is deprecated

	uint64_t htmax[] = {
		0,
		0xF,
		0xFF,
		0xFFF,
		0xFFFF,
		0x10000000
	};
	uint32_t masks[] = {
		0xFFFFFFFF,
		0xFFFFFFF0,
		0xFFFFFF00,
		0xFFFFF000,
		0xFFFF0000,
		0
	};

	// we need bigendian data...
        swab32_array( endiandata, pdata, 20 );

#ifdef DEBUG_ALGO
	if (Htarg != 0)
		printf("[%d] Htarg=%X\n", thr_id, Htarg);
#endif
	for (int m=0; m < 6; m++) {
		if (Htarg <= htmax[m]) {
			uint32_t mask = masks[m];
			do {
				pdata[19] = ++n;
				be32enc(&endiandata[19], n);
				x15hash(hash64, endiandata);
#ifndef DEBUG_ALGO
				if (!(hash64[7] & mask))
                                {
                                  if ( fulltest(hash64, ptarget)) {
					*hashes_done = n - first_nonce + 1;
					return true;
                                    }
//                                    else
//                                    {
//                                      applog(LOG_INFO, "Result does not validate on CPU!");
//                                     }
                         	}
#else
				if (!(n % 0x1000) && !thr_id) printf(".");
				if (!(hash64[7] & mask)) {
					printf("[%d]",thr_id);
					if (fulltest(hash64, ptarget)) {
                                                work_set_target_ratio( work, hash64 );
						*hashes_done = n - first_nonce + 1;
						return true;
					}
				}
#endif
			} while (n < max_nonce && !work_restart[thr_id].restart);
			// see blake.c if else to understand the loop on htmax => mask
			break;
		}
	}

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