// sha3x.go
package randomxT

import (
	"strconv"
	//"database/sql"
	"encoding/binary"
	"encoding/hex"
	"encoding/json"

	//"log"
	//"math"
	"math/big"
	//"strings"

	"fmt"
	"pool/internal/msg"
	"pool/internal/server/coin"
	"pool/internal/server/dbif"
	"pool/internal/stratum"
	"pool/internal/utility"
	"time"

	_ "github.com/mattn/go-sqlite3"

	"go.uber.org/zap"
)

const SERVER_SHA3X_VERSION string = "sha3x v0.1a"

type Sha3xBlockHeader struct {
	Nonce  [8]byte
	Header [32]byte
	Algo   byte
}

func Sha3xBlockHeaderToBytes(h Sha3xBlockHeader) []byte {
	out := make([]byte, 8+32+1)
	for i := 0; i < 8; i++ {
		out[i] = h.Nonce[i]
	}
	for i := 0; i < 32; i++ {
		out[8+i] = h.Header[i]
	}
	out[8+32] = h.Algo

	return out
}

type ServerSha3xContext struct {
	ServerCtx *coin.ServerContext
	logg      *zap.Logger

	Sha3xJob msg.Sha3xStratumJob
}

var logg *zap.Logger
var ServerSha3xCtx ServerSha3xContext

type Sha3xNotify_params_msg struct {
	Algo   string `json:"algo"`
	Blob   string `json:"blob"`
	Height uint32 `json:"height"`
	Job_id string `json:"job_id"`
	Target string `json:"target"`
}

type Sha3xNotify_msg struct {
	Jsonrpc string                 `json:"jsonrpc"`
	Method  string                 `json:"method"`
	Params  Sha3xNotify_params_msg `json:"params"`
}

func handle_submit(miner *coin.MinerObj, id float64, miner_user string, job_id string, nonce2 string, ntime string, nonce string) (bool, bool, bool) {
	var submit_item coin.BlockMsg
	/*var user_blk_item coin.UserBlockMsg*/
	var pool_blk_item coin.PoolBlkMsg

	var blk_detail_height int64
	var blk_detail_hash string
	var blk_detail_success bool
	var blk_detail_miner_diff float64
	var blk_detail_pool_diff float64

	if miner.Authorized != true {
		miner.ErrOthers = miner.ErrOthers + 1
		stratum.Handle_exception(miner, id, stratum.MINER_ERR_UNAUTH_WORKER)
		stratum.Send_reconnect_msg(miner)
		return false, false, false
	}
	var new_found bool = false
	var ack stratum.Submit_ack
	ack.ID = id
	ack.Result = true
	//logg.Warn("[server]", zap.String("user", miner.User), zap.String("miner", miner.Miner))
	//logg.Debug("[server]", zap.Float64("id", id), zap.String("job_id", job_id))
	//logg.Debug("[server]", zap.String("nonce2", nonce2), zap.String("ntime", ntime), zap.String("nonce", nonce))
	//stratum.UpdateJobs(miner)
	v, ok := miner.Jobs.Load(job_id)
	if ok {
		job := v.(msg.Sha3xStratumJob)

		if job.Height < miner.CurHeight-1 {
			ack.Result = false
			stratum.Handle_exception(miner, id, stratum.MINER_ERR_STALED_JOB)
			miner.ErrStaleds = miner.ErrStaleds + 1
			return false, false, false
		}

		//logg.Debug("[server]", zap.Uint64("ntime", nt), zap.Uint64("mintime", uint64(job.Mintime)), zap.Uint64("jobtime", jt_reverse))
		/*if nt < uint64(job.Mintime) {
			ack.Result = false
			util.Handle_exception(miner, id, util.MINER_ERR_TIME_TOO_OLD)
		} else if nt > jt_reverse+uint64(600) {
			ack.Result = false
			util.Handle_exception(miner, id, util.MINER_ERR_TIME_TOO_NEW)
		} else */{
			if (miner.LastNonce != nonce) || (miner.LastHeader != job.Header) {
				miner.LastHeader = job.Header
				miner.LastNonce = nonce
				job.Nonce = nonce
				job.Extranonce2 = nonce2
				//logg.Debug("[server]", zap.Uint32("height", job.Height), zap.String("target", job.Target))
				if miner.ZlogInit {
					miner.Zlog.Info().Msg("height " + string(job.Height) + " target " + job.Target + " " + miner.User + "." + miner.Miner)
				}

				phb, _ := hex.DecodeString(job.Header)

				nb, _ := hex.DecodeString(nonce)

				var calc_hash []byte

				var header Sha3xBlockHeader
				for i := 0; i < 8; i++ {
					header.Nonce[i] = nb[i]
				}
				for i := 0; i < 32; i++ {
					header.Header[i] = phb[i]
				}
				header.Algo = 1
				submit_item.Header = hex.EncodeToString(Sha3xBlockHeaderToBytes(header))
				calc_hash = BuildPowHash(header)

				//logg.Debug("[server]", zap.String("hash in", submit_item.Header))
				//calc_hash, header := util.BuildBlockHash(&(job), true, Build_PowHash)
				//logg.Debug("[server]", zap.String("calc_hash", hex.EncodeToString(calc_hash)) /*, zap.String("merkle root", hex.EncodeToString(merkle_root))*/)
				if miner.ZlogInit {
					miner.Zlog.Info().Msg("hash in " + submit_item.Header + " calc_hash " + hex.EncodeToString(calc_hash) + " " + miner.User + "." + miner.Miner)
				}
				submit_target := new(big.Int)
				//submit_target.SetBytes(common.Reverse(calc_hash))

				//hashs, _ := utility.ReverseS(hex.EncodeToString(calc_hash))

				//hashb, _ := hex.DecodeString(hashs)
				//submit_target.SetBytes(hashb)
				submit_target.SetBytes(calc_hash)
				/*logg.Debug("[server]", zap.String("pow", hex.EncodeToString(submit_target.Bytes())), zap.String("target", hex.EncodeToString(miner.Target.Bytes())))
				if submit_target.Cmp(miner.Target) > 0 {*/
				calc_diff := utility.Target2Diff(utility.Reverse(calc_hash))
				//calc_diff := utility.Target2Diff(calc_hash)
				//log.Printf("diff,calc_diff:%f difficulty:%f ", calc_diff, miner.Difficulty)
				//logg.Warn("[server]", zap.String("user", miner.User+"."+miner.Miner), zap.Float64("target diff", miner.Difficulty), zap.Float64("submit diff", calc_diff))
				if miner.ZlogInit {
					miner.Zlog.Info().Msg(miner.User + "." + miner.Miner + " target diff " + fmt.Sprintf("%f", (miner.Difficulty)) + " submit diff " + fmt.Sprintf("%f", (calc_diff)))
				}
				//logg.Debug("[server]", zap.String("target", miner.Target.String()), zap.Any("bytes", miner.Target.Bytes()))
				//logg.Info("[server]", zap.Float64("target diff", miner.Difficulty), zap.Float64("submit diff", calc_diff), zap.String("target", hex.EncodeToString(miner.Target.Bytes())))

				//if calc_diff < miner.Difficulty {
				if calc_diff < job.JobDifficulty {
					//gpu protocol handler
					/*for i := 0; i < 8; i++ {
						temp_nonce := header.Nonce[8+i]
						header.Nonce[8+i] = header.Nonce[i]
						header.Nonce[i] = temp_nonce
					}
					submit_item.Header = hex.EncodeToString(Sha3xBlockHeaderToBytes(header))
					calc_hash = BuildPowHash(header)
					logg.Debug("[server]", zap.String("hash in", hex.EncodeToString(Sha3xBlockHeaderToBytes(header))))*/
					//logg.Debug("[server]", zap.String("calc_hash", hex.EncodeToString(calc_hash)) /*, zap.String("merkle root", hex.EncodeToString(merkle_root))*/)
					//submit_target = new(big.Int)
					/*submit_target.SetBytes(calc_hash)
					calc_diff = utility.Target2Diff(calc_hash)
					logg.Warn("[server]", zap.String("user", miner.User+"."+miner.Miner), zap.Float64("target diff", miner.Difficulty), zap.Float64("submit diff", calc_diff))
					if calc_diff < miner.Difficulty {
					*/
					ack.Result = false
					miner.ErrLowDiffs = miner.ErrLowDiffs + 1
					stratum.Handle_exception(miner, id, stratum.MINER_ERR_LOW_DIF_SHARE)
					return false, false, false
					//}

				}
				//logg.Warn("[server]", zap.String("pow", hex.EncodeToString(submit_target.Bytes())), zap.String("target", hex.EncodeToString(miner.ServerTarget.Bytes())))
				//submit_target.Text(16)
				/*if submit_target.Cmp(miner.ServerTarget) <= 0 {*/
				//log.Println("[server]server_target", miner.ServerTargetS)
				//stb, _ := hex.DecodeString(miner.ServerTargetS)
				stb, _ := hex.DecodeString(job.Target)
				//logg.Info("[server]", zap.String("target", job.Target))
				//server_diff := Target2Diff(common.Reverse(stb))
				server_diff := utility.Target2Diff(utility.Reverse(stb))
				//log.Printf("[server]server_diff %f", server_diff)
				//logg.Info("[server]", zap.Float64("calc_diff", calc_diff), zap.Float64("miner.Difficulty", miner.Difficulty), zap.Float64("server_diff", server_diff))
				//logg.Debug("[server]", zap.String("ServerTargetS", miner.ServerTargetS))
				network_target := new(big.Int)
				network_target.SetBytes(stb)
				//logg.Info("[server]", zap.Float64("calc_diff", calc_diff), zap.Float64("miner.Difficulty", miner.Difficulty), zap.Float64("server_diff", server_diff))
				//logg.Debug("[server]", zap.String("submit_target", hex.EncodeToString(submit_target.Bytes())), zap.String("network_target", hex.EncodeToString(network_target.Bytes())), zap.String("target", hex.EncodeToString(miner.ServerTarget.Bytes())), zap.Int("cmp", network_target.Cmp(submit_target)))
				if miner.ZlogInit {
					miner.Zlog.Info().Msg(miner.User + "." + miner.Miner + " calc_diff " + fmt.Sprintf("%f", (calc_diff)) + " miner.Difficulty " + fmt.Sprintf("%f", (miner.Difficulty)) + " server_diff " + fmt.Sprintf("%f", (server_diff)))
					miner.Zlog.Info().Msg(miner.User + "." + miner.Miner + " submit_target " + hex.EncodeToString(submit_target.Bytes()) + " network_target " + hex.EncodeToString(network_target.Bytes()) + " target " + hex.EncodeToString(miner.ServerTarget.Bytes()) + " cmp " + fmt.Sprintf("%d", (network_target.Cmp(submit_target))))
				}

				submit_item.Hash = hex.EncodeToString(calc_hash)
				submit_item.Target = hex.EncodeToString(miner.Target.Bytes())
				submit_item.Submit_target = hex.EncodeToString(calc_hash)
				submit_item.Height = int64(job.Height)
				submit_item.Pow = hex.EncodeToString(calc_hash)
				submit_item.Net_target = hex.EncodeToString(network_target.Bytes())

				/*user_blk_item.Height = int64(job.Height)
				user_blk_item.Hash = hex.EncodeToString(calc_hash)
				user_blk_item.Pow = hex.EncodeToString(calc_hash)
				user_blk_item.Net_target = hex.EncodeToString(network_target.Bytes())*/

				pool_blk_item.Height = int64(job.Height)
				pool_blk_item.Hash = hex.EncodeToString(calc_hash)
				pool_blk_item.Pow = hex.EncodeToString(calc_hash)
				pool_blk_item.Net_target = hex.EncodeToString(network_target.Bytes())

				blk_detail_height = int64(job.Height)
				blk_detail_hash = hex.EncodeToString(calc_hash)
				blk_detail_success = false
				//blk_detail_miner_diff = miner.Difficulty
				blk_detail_miner_diff = job.JobDifficulty
				blk_detail_pool_diff = miner.Server.RefDifficulty

				if ack.Result == true {
					/*if miner.CurHeight != 0 && miner.CurHeight == job.Height {
						return
					}*/

					//if true {
					if (calc_diff >= server_diff) || (network_target.Cmp(submit_target) >= 0) {
						//if true {
						miner.Server.SubIdx++
						Produce_block_submit(miner /*header,*/, &job, submit_item.Hash, miner.Server.SubIdx)
						miner.SubmitIndex++
						miner.Submits = miner.Submits + 1
						//miner.CurHeight = job.Height
						new_found = true
					}
					if new_found && float64(miner.Server.Sha3xJob.U64target) <= calc_diff {
						pool_blk_item.Submit = "y"
						pool_blk_item.Success = false
						pool_blk_item.Accepts = miner.Accepts
						pool_blk_item.Rejects = miner.Rejects
						pool_blk_item.Reward = 0
						pool_blk_item.Fee = 0
						pool_blk_item.Nonce = nonce
						pool_blk_item.SubIdx = miner.Server.SubIdx
						dbif.NotifyPoolBlkStatsDb2(miner.Server, &pool_blk_item)
					}
				}
			} else {
				miner.LastHeader = job.Header
				miner.LastNonce = nonce
				ack.Result = false
				stratum.Handle_exception(miner, id, stratum.MINER_ERR_DUP_SHARE)
				miner.ErrDuplicates = miner.ErrDuplicates + 1
				return false, false, false
			}
		}
	} else {
		ack.Result = false
		stratum.Handle_exception(miner, id, stratum.MINER_ERR_NOT_FOUND_JOB)
		miner.ErrStaleds = miner.ErrStaleds + 1
		return false, false, false
	}

	miner.LastJobId = job_id

	ack.Error = nil
	body, err := json.Marshal(ack)
	if err != nil {
		//logg.Error("[server]", zap.String("Marshal", err.Error()))
		if miner.ZlogInit {
			miner.Zlog.Info().Msg(miner.User + "." + miner.Miner + " handle_submit Marshal " + err.Error())
		}
		miner.ErrOthers = miner.ErrOthers + 1
		stratum.Handle_exception(miner, id, stratum.MINER_ERR_UNKNOWN)
		return false, false, false
	}

	var body_string = string(body) + "\n"
	err = stratum.Conn_tx(miner.Conn, []byte(body_string))
	if err != nil {
		//miner.Server.Miners.Delete(miner.MinerId)
	}
	if miner.ZlogInit {
		miner.Zlog.Info().Msg(body_string)
	}
	//logg.Debug("[server]", zap.String("tx", body_string))
	miner.TxLock.Lock()
	miner.Status = coin.MINER_STATUS_RUNNING
	miner.TxLock.Unlock()

	if ack.Result {

		miner.Accepts += miner.Difficulty
		miner.M5Accepts += miner.Difficulty

		miner.VarDiffOpt.SubmitShares += miner.Difficulty

	} else {
		miner.Rejects += miner.Difficulty

	}
	now := time.Now()
	if miner.Server.Config.Diff.Filter == "kalman" {
		if ack.Result {
			share_interval := now.Sub(miner.LastSubmitime).Seconds()
			mhs := miner.Difficulty * share_interval
			diff_next, kalman_p := miner.DiffHandler.Handler(miner.Difficulty, share_interval)
			mhs_est := diff_next * miner.Server.Config.Diff.DiffAdjustInterval

			ratio := diff_next / miner.Difficulty
			if ratio > 0 {
				if now.Sub(miner.StartSubmitTime).Seconds() > 180 {
					if ratio >= 2 {
						//miner.DifficultyNext = math.Ceil(diff_next*100) / 100
						miner.DifficultyNext = diff_next * 10000000 / 10000000
					} else if ratio <= 0.5 {
						//miner.DifficultyNext = math.Ceil(diff_next*100) / 100
						miner.DifficultyNext = diff_next * 10000000 / 10000000
					} else {
					}
				} else {
					//miner.DifficultyNext = math.Ceil(diff_next*100) / 100
					miner.DifficultyNext = diff_next * 10000000 / 10000000
					/*if ratio >= 1.1 {
						miner.DifficultyNext = math.Ceil(diff_next*100) / 100
					} else if ratio <= 0.8 {
						miner.DifficultyNext = math.Ceil(diff_next*100) / 100
					} else {
					}*/
				}
			}
			if miner.DifficultyNext > 0.0 {
				if miner.DifficultyNext < miner.VarDiffOpt.MinDiff {
					miner.DifficultyNext = miner.VarDiffOpt.MinDiff
				} else if miner.DifficultyNext > miner.VarDiffOpt.MaxDiff {
					miner.DifficultyNext = miner.VarDiffOpt.MaxDiff
				}
			}
			//miner.VarDiffOpt.LastCalcTime = now

			if miner.Server.Config.Diff.Dbg {
				coin.New_diff_into_db(miner.User, miner.Miner, fmt.Sprint(miner.MinerIndex), miner.Difficulty, diff_next, kalman_p, share_interval, mhs, mhs_est)
			}

			//log.Println("diff adjust", ratio, diff_next, miner.Difficulty, miner.DifficultyNext)
		}
	} else {
		// submit time < DiffAdjustInterval,then up adjust diff
		if now.Sub(miner.LastSubmitime).Seconds() < miner.Server.Config.Diff.DiffAdjustInterval {
			if ack.Result {
				if miner.VarDiffOpt.Uptimes++; miner.VarDiffOpt.Uptimes >= coin.DIFFICULTY_WAIT_TIMES {
					coin.VarAdjustDifficulty(miner, coin.UP_DIFF)
					miner.VarDiffOpt.LastCalcTime = now
				}
			}
		} else {
			miner.VarDiffOpt.Uptimes = 0
		}

		// submit time > 2 * DiffAdjustInterval,then down adjust diff
		if now.Sub(miner.LastSubmitime).Seconds() > miner.Server.Config.Diff.DiffAdjustInterval*2 {
			if ack.Result {
				if miner.VarDiffOpt.Downtimes++; miner.VarDiffOpt.Downtimes >= coin.DIFFICULTY_WAIT_TIMES {
					coin.VarAdjustDifficulty(miner, coin.DOWN_DIFF)
					miner.VarDiffOpt.LastCalcTime = now
				}
			}
		} else {
			miner.VarDiffOpt.Downtimes = 0
		}
	}
	if ack.Result {
		miner.LastSubmitime = now
		miner.VarDiffOpt.LastSubmitTime = now
	}
	var duration float64 = float64(now.Sub(miner.StartSubmitTime)) / 1000000000

	if duration < 1 {
		duration = 1
	}
	//diffOneShareHashesAvg := uint64(0x00000000FFFFFFFF)
	diffOneShareHashesAvg := uint64(0xFFFFFFFFFFFFFFFF)
	miner.AverageHashrate = miner.Accepts * float64(diffOneShareHashesAvg) / duration / 1000000
	var m5_duration float64 = float64(now.Sub(miner.M5SubmitTime)) / 1000000000
	if m5_duration >= float64(time.Minute*5)/1000000000 {
		miner.M5SubmitTime = now
		miner.M5Hashrate = miner.M5Accepts * float64(diffOneShareHashesAvg) / m5_duration / 1000000
		//logg.Info("[server]", zap.Float64("Accepts", miner.Accepts), zap.Float64("M5Accepts", miner.M5Accepts), zap.Float64("M5Hashrate(MH/S)", miner.M5Hashrate))
		miner.M5Accepts = 0
	}

	//logg.Warn("[server]", zap.Float64("Accepts", miner.Accepts), zap.Float64("Rejects", miner.Rejects))
	//logg.Info("[server]", zap.Float64("TargetShares", miner.VarDiffOpt.TargetShares), zap.Float64("MinShares", miner.VarDiffOpt.MinShares), zap.Float64("MaxShares", miner.VarDiffOpt.MaxShares), zap.Float64("SubmitShares", miner.VarDiffOpt.SubmitShares))
	//logg.Warn("[server]", zap.Float64("reject rate", miner.Rejects/(miner.Accepts+miner.Rejects)), zap.Float64("Hashrate(MH/S)", miner.AverageHashrate))
	//logg.Warn("[server]", zap.Float64("M5Accepts", miner.M5Accepts), zap.Float64("M5Hashrate(MH/S)", miner.M5Hashrate))
	if miner.ZlogInit {
		miner.Zlog.Info().Msg(miner.User + "." + miner.Miner + " handle_submit M5Accepts " + fmt.Sprintf("%f", (miner.M5Accepts)) + " M5Hashrate(MH/S) " + fmt.Sprintf("%f", (miner.M5Hashrate)))
	}

	//logg.Info("[server]", zap.Float64("LastCalcTime", float64(now.Sub(miner.VarDiffOpt.LastCalcTime))/1000000000))
	//calc acutal submit shares period of time, then compare with target shares and adjust diff

	if miner.Server.Config.Diff.Filter == "kalman" {
	} else {
		if float64(now.Sub(miner.VarDiffOpt.LastCalcTime))/1000000000 >= miner.VarDiffOpt.AdjustTime {
			coin.VarAdjustDifficulty(miner, coin.UPDATE_DIFF)
			miner.VarDiffOpt.LastCalcTime = now
		}
	}

	if ack.Result {

		submit_item.Success = false
		if new_found {
			submit_item.Submit = "y"
			submit_item.SubIdx = miner.Server.SubIdx
		} else {
			submit_item.Submit = "n"
			submit_item.SubIdx = -1
		}

		submit_item.Accepts = miner.Accepts
		submit_item.Total_accepts = miner.Accepts
		submit_item.Rejects = miner.Rejects
		submit_item.Total_rejects = miner.Rejects
		submit_item.Reward = 0
		submit_item.Fee = 0
		submit_item.Nonce = nonce

		//dbif.NotifyMinerDb2(miner, &submit_item)

		dbif.NotifyBlkDetailDb(miner, blk_detail_height, blk_detail_hash, blk_detail_success, blk_detail_miner_diff, blk_detail_pool_diff, nonce, submit_item.SubIdx)
		return true, new_found, true
	}
	return false, false, true
}

func Produce_block_submit(miner *coin.MinerObj /*header Sha3xBlockHeader,*/, job *msg.Sha3xStratumJob, PowHash string, SubIdx int64) {
	var nm msg.BlockSha3xMsg
	nm.Id = job.Id
	nm.Header = job.Header
	//nm.Nonce = job.Nonce
	noncer, _ := stratum.ReverseHexStringByByte(job.Nonce)
	nonce, err := strconv.ParseUint(noncer, 16, 64)
	nm.Nonce = nonce
	nm.Pow = PowHash
	nm.SubIdx = SubIdx
	nm.User = miner.User
	nm.Miner = miner.Miner
	nm.Index = fmt.Sprint(miner.MinerIndex)
	body, err := json.Marshal(nm)
	if err != nil {
		logg.Error("[server]", zap.String("failed to Marshal job", err.Error()))
		return
	}
	blk := string(body)

	//Add Height
	/*heightb := utility.Uint32ToByte(job.Height)
	heights := hex.EncodeToString(heightb)
	blk += heights
	var Height uint32 = utility.ByteToUint32(heightb)*/
	nm.Height = (uint64)(job.Height)
	logg.Warn("[server]", zap.Uint32("Height", job.Height))

	//Add SubmitIndex
	/*indexb := utility.Uint32ToByte(miner.SubmitIndex)
	indexs := hex.EncodeToString(indexb)
	blk += indexs
	var SubmitIndex uint32 = utility.ByteToUint32(indexb)*/
	nm.SubmitIdx = (uint64)(miner.SubmitIndex)
	logg.Info("[server]", zap.Uint32("SubmitIndex", miner.SubmitIndex))
	logg.Info("[server]", zap.String("blk", blk))

	if miner.Server.PubCh == nil {
		miner.Server.PubCh = utility.InitZmqPub(miner.Server.Config.Zmq.Pub)
	}
	if miner.Server.PubCh != nil {
		//miner.Server.PubCh.SendChan <- [][]byte{[]byte("blksha3x"), []byte(blk)}
		err := miner.Server.PubCh.SendMessage([][]byte{[]byte("blksha3x"), []byte(blk)})
		if err != nil {
			miner.Server.PubCh.Destroy()
			miner.Server.PubCh = nil
			logg.Info("[server]", zap.String("blk", err.Error()))
		} else {
			logg.Info("[server]", zap.String("blk", "sent"))
		}
	}
}

// server-->miner
func sha3x_parse_miner_notify(miner *coin.MinerObj, msg msg.Sha3xStratumJob) int {
	if miner.Sha3xJob.Height != msg.Height {
		miner.Job.IsClean = true
	}
	miner.Sha3xJob = msg
	miner.Sha3xJob.Extranonce1 = miner.Job.Extranonce1
	miner.Job.Extranonce2_size = msg.Extranonce2_size

	//miner.Server.Logg.Info("[server]", zap.Int32("miner.Version", miner.Version), zap.Int32("msg.Version", msg.Version))
	return 1
}

func Init(server *coin.ServerContext) {
	ServerSha3xCtx.ServerCtx = server
	logg = server.Logg
	logg.Info("[server]", zap.String("server_sha3x_version", SERVER_SHA3X_VERSION))
	coin.Init_diff_db()
}

func Start() {

}

func Stop() {
	coin.DiffStop()
}

func InitMiner(miner *coin.MinerObj) {
	miner.Sha3xJob = miner.Server.Sha3xJob
	miner.Sha3xJob.Extranonce1 = miner.Job.Extranonce1

	server_target := new(big.Int)
	t_bytes, err := hex.DecodeString(miner.NexaJob.Target)
	if err != nil {
		logg.Error("[server]", zap.String("DecodeString", err.Error()))
		return
	}
	//server_target.SetBytes(common.Reverse(t_bytes))
	server_target.SetBytes(t_bytes)
	miner.ServerTarget = server_target
	miner.ServerTargetS = miner.Server.SJob.Target
}

func Handle_subscribe_sha3x(miner *coin.MinerObj, id float64, extranonce1 string) {

}

func HandleMinerSubscribe(miner *coin.MinerObj, id float64, extranonce1 string, msg string) {

}

func HandleMinerAuth(miner *coin.MinerObj) {

}

func HandleMinerSubmit(miner *coin.MinerObj, id float64, miner_user string, job_id string, nonce2 string, ntime string, nonce string) (bool, bool, bool) {
	//nonce_str, _ := stratum.ReverseHexStringByByte(nonce)
	accept_ok, submit_ok, handle_ok := handle_submit(miner, id, miner_user, job_id, nonce2, ntime, nonce)
	return accept_ok, submit_ok, handle_ok
}

func SetDifficulty(miner *coin.MinerObj) {
	stratum.Set_difficulty(miner)
}

func Sha3xNotify(miner *coin.MinerObj) {
	miner.TxLock.Lock()
	if !((miner.Status == coin.MINER_STATUS_AUTHORIZED) || (miner.Status == coin.MINER_STATUS_RUNNING)) {
		miner.TxLock.Unlock()
		return
	}
	miner.TxLock.Unlock()
	if miner.DifficultyNext > -1 {
		ratio := miner.DifficultyNext / miner.Difficulty
		if ratio > 1.1 || ratio < 0.9 {
			miner.Difficulty = miner.DifficultyNext
			miner.DifficultyNext = -1
			stratum.Set_difficulty(miner)
			//logg.Info("[gbt]", zap.Float64("update Diff", miner.Difficulty))
		} else {
			miner.DifficultyNext = -1
		}
	}

	miner.TxLock.Lock()
	//log.Println("[server]extra1, id", miner.Job.Extranonce1, miner.Job.Job_id, miner.MinerId)

	var msg Sha3xNotify_msg

	idb := make([]byte, 4)
	binary.BigEndian.PutUint32(idb, miner.JobId)
	miner.Job.Job_id = hex.EncodeToString(idb)

	msg.Params.Algo = "sha3x"
	msg.Params.Job_id = miner.Job.Job_id
	msg.Params.Blob = miner.Sha3xJob.Header
	msg.Params.Height = miner.Sha3xJob.Height
	//target_s, _ := stratum.ReverseHexStringByByte(miner.Sha3xJob.Target)
	//msg.Params.Target = target_s[48:]
	target_new, _ := utility.DiffToTarget(miner.Difficulty)
	target_str := fmt.Sprintf("%064x", target_new.Bytes())
	target_strr, strerr := stratum.ReverseHexStringByByte(target_str)
	if strerr != nil {
		println("ReverseHexStringByByte", strerr.Error())
	}
	//println("target=", target_str, "r=", target_strr)
	msg.Params.Target = target_strr[48:]

	miner.CurHeight = miner.Sha3xJob.Height

	miner.Sha3xJob.JobDifficulty = miner.Difficulty

	miner.Jobs.LoadOrStore(miner.Job.Job_id, miner.Sha3xJob)

	/*var entry coin.JobListEntry
	entry.Job_id = miner.Job.Job_id
	entry.Ts = time.Now()

	miner.LockForJobs.Lock()
	miner.JobList.PushFront(entry)
	var removes string = ""
	if miner.JobList.Len() > int(coin.LOCAL_JOBS_TOTAL_SIZE) {
		e := miner.JobList.Back()
		entry := e.Value.(coin.JobListEntry)
		removes = entry.Job_id
		miner.JobList.Remove(e)
	}
	miner.LockForJobs.Unlock()

	if len(removes) > 0 {
		miner.Jobs.Delete(removes)
	}*/
	stratum.AddAndUpdateJob(miner)

	stratum.UpdateJobs(miner)

	//miner.LastJobId = miner.Job.Job_id
	miner.JobId++

	var body []byte
	var err error

	msg.Jsonrpc = "2.0"
	msg.Method = "job"

	body, err = json.Marshal(msg)
	if err != nil {
		miner.Server.Logg.Error("[server]", zap.String("Marshal", err.Error()))
		miner.TxLock.Unlock()
		return
	}

	var body_string = string(body) + "\n"
	err = stratum.Conn_tx(miner.Conn, []byte(body_string))
	if err != nil {
		//delete(miner.Server.Miners, miner.MinerId)
		//miner.Server.Miners.Delete(miner.MinerId)
	}
	//miner.Server.Logg.Debug("[server]", zap.String("tx", body_string))
	miner.TxLock.Unlock()
	if miner.ZlogInit {
		miner.Zlog.Info().Msg(body_string)
	}
}

func Notify(miner *coin.MinerObj) {
	Sha3xNotify(miner)
}

func formatUint64ToHexWithPadding(val uint64) string {
	hexStr := fmt.Sprintf("%016x", val)

	if len(hexStr) < 64 {
		paddingLen := 64 - len(hexStr)
		hexStr += string(make([]byte, paddingLen))
		for i := len(hexStr) - paddingLen; i < 64; i++ {
			hexStr = hexStr[:i] + "0" + hexStr[i+1:]
		}
	}
	return hexStr
}

func HandleJobMsg(server *coin.ServerContext, Msg []byte) {
	var result msg.Sha3xStratumJob
	server.Logg.Warn("[server]", zap.String("receive", "job"))

	if err := json.Unmarshal(Msg, &result); err != nil {
		server.Logg.Error("[server]", zap.String("Unmarshal", err.Error()))
		return
	}
	result.Target = formatUint64ToHexWithPadding(result.U64target)

	//target_new, _ := utility.DiffToTarget((float64)(result.U64target))
	//target_str := fmt.Sprintf("%064x", target_new.Bytes())
	//result.Target = target_str

	server.Sha3xJob = msg.Sha3xStratumJob(result)
	logg.Debug("[gbt]", zap.String("Target", server.Sha3xJob.Target))

	server.Sha3xJob.Extranonce2_size = 8
	server.SJob.Extranonce2_size = 8
	logg.Debug("[gbt]", zap.Uint32("Height", server.Sha3xJob.Height), zap.String("Target", server.Sha3xJob.Target), zap.String("Header", server.Sha3xJob.Header) /*, zap.Uint64("Timastamp", server.Sha3xJob.CurTime)*/)
	targetb, _ := hex.DecodeString(server.Sha3xJob.Target)
	logg.Debug("[gbt]", zap.Uint64("Id", server.Sha3xJob.Id), zap.Float64("network diff", utility.Target2Diff(utility.Reverse(targetb))))

	server.NetHight = uint64(server.Sha3xJob.Height)
	server.NetTarget = server.Sha3xJob.Target
	server.Miners.Range(func(k, v interface{}) bool {
		if v != nil {
			m, ok := v.(*(coin.MinerObj))
			if ok {
				if m != nil {
					server.Logg.Info("[server]", zap.String("lock", "start"))
					m.TxLock.Lock()
					status := m.Status
					cmd := sha3x_parse_miner_notify(m, server.Sha3xJob)
					m.TxLock.Unlock()
					server.Logg.Info("[server]", zap.String("lock", "end"))
					var need_notify bool = true
					if time.Now().Sub(m.ConnSetupTime) >= time.Duration(coin.CONN_EXPIRED_TIME)*time.Second {
						if (status != coin.MINER_STATUS_RUNNING) && (status != coin.MINER_STATUS_AUTHORIZED) {
							//m.Conn.Close()
							need_notify = false
						}
					}
					if need_notify {
						switch cmd {
						case 0: //extranonce 1 and extranonce2 size
							//TODO
						case 1: //notify
							Sha3xNotify(m)
						}
					}
				}
			}
		}
		return true
	})
}

func IsMhsLow(miner *coin.MinerObj) bool {
	if miner.Mhs5M < 1 {
		return true
	}
	return false
}

func GetBlockInterval() int {
	return 3600
}