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/******************************************************************************
* Copyright © 2014-2017 The SuperNET Developers. *
* *
* See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at *
* the top-level directory of this distribution for the individual copyright *
* holder information and the developer policies on copyright and licensing. *
* *
* Unless otherwise agreed in a custom licensing agreement, no part of the *
* SuperNET software, including this file may be copied, modified, propagated *
* or distributed except according to the terms contained in the LICENSE file *
* *
* Removal or modification of this copyright notice is prohibited. *
* *
******************************************************************************/
//
// LP_quotes.c
// marketmaker
//
struct basilisk_request *LP_requestinit(struct basilisk_request *rp,bits256 srchash,bits256 desthash,char *src,uint64_t srcsatoshis,char *dest,uint64_t destsatoshis,uint32_t timestamp,uint32_t quotetime,int32_t DEXselector)
{
struct basilisk_request R;
memset(rp,0,sizeof(*rp));
rp->srchash = srchash;
rp->srcamount = srcsatoshis;
rp->timestamp = timestamp;
rp->DEXselector = DEXselector;
safecopy(rp->src,src,sizeof(rp->src));
safecopy(rp->dest,dest,sizeof(rp->dest));
R = *rp;
rp->requestid = basilisk_requestid(rp);
rp->quotetime = quotetime;
rp->desthash = desthash;
rp->destamount = destsatoshis;
rp->quoteid = basilisk_quoteid(rp);
return(rp);
}
cJSON *LP_quotejson(struct LP_quoteinfo *qp)
{
double price; cJSON *retjson = cJSON_CreateObject();
jaddstr(retjson,"base",qp->srccoin);
jaddstr(retjson,"rel",qp->destcoin);
if ( qp->coinaddr[0] != 0 )
jaddstr(retjson,"address",qp->coinaddr);
if ( qp->timestamp != 0 )
jaddnum(retjson,"timestamp",qp->timestamp);
if ( bits256_nonz(qp->txid) != 0 )
{
jaddbits256(retjson,"txid",qp->txid);
jaddnum(retjson,"vout",qp->vout);
}
if ( bits256_nonz(qp->srchash) != 0 )
jaddbits256(retjson,"srchash",qp->srchash);
if ( qp->txfee != 0 )
jadd64bits(retjson,"txfee",qp->txfee);
if ( qp->quotetime != 0 )
jaddnum(retjson,"quotetime",qp->quotetime);
if ( qp->satoshis != 0 )
jadd64bits(retjson,"satoshis",qp->satoshis);
if ( bits256_nonz(qp->desthash) != 0 )
jaddbits256(retjson,"desthash",qp->desthash);
if ( bits256_nonz(qp->txid2) != 0 )
{
jaddbits256(retjson,"txid2",qp->txid2);
jaddnum(retjson,"vout2",qp->vout2);
}
if ( bits256_nonz(qp->desttxid) != 0 )
{
if ( qp->destaddr[0] != 0 )
jaddstr(retjson,"destaddr",qp->destaddr);
jaddbits256(retjson,"desttxid",qp->desttxid);
jaddnum(retjson,"destvout",qp->destvout);
}
if ( bits256_nonz(qp->feetxid) != 0 )
{
jaddbits256(retjson,"feetxid",qp->feetxid);
jaddnum(retjson,"feevout",qp->feevout);
}
if ( qp->desttxfee != 0 )
jadd64bits(retjson,"desttxfee",qp->desttxfee);
if ( qp->destsatoshis != 0 )
{
jadd64bits(retjson,"destsatoshis",qp->destsatoshis);
if ( qp->satoshis != 0 )
{
price = (double)(qp->destsatoshis + qp->desttxfee) / qp->satoshis;
jaddnum(retjson,"price",price);
}
}
return(retjson);
}
int32_t LP_quoteparse(struct LP_quoteinfo *qp,cJSON *argjson)
{
safecopy(qp->srccoin,jstr(argjson,"base"),sizeof(qp->srccoin));
safecopy(qp->coinaddr,jstr(argjson,"address"),sizeof(qp->coinaddr));
safecopy(qp->destcoin,jstr(argjson,"rel"),sizeof(qp->destcoin));
safecopy(qp->destaddr,jstr(argjson,"destaddr"),sizeof(qp->destaddr));
qp->timestamp = juint(argjson,"timestamp");
qp->quotetime = juint(argjson,"quotetime");
qp->txid = jbits256(argjson,"txid");
qp->txid2 = jbits256(argjson,"txid2");
qp->vout = jint(argjson,"vout");
qp->vout2 = jint(argjson,"vout2");
qp->feevout = jint(argjson,"feevout");
qp->srchash = jbits256(argjson,"srchash");
qp->desttxid = jbits256(argjson,"desttxid");
qp->feetxid = jbits256(argjson,"feetxid");
qp->destvout = jint(argjson,"destvout");
qp->desthash = jbits256(argjson,"desthash");
qp->satoshis = j64bits(argjson,"satoshis");
qp->destsatoshis = j64bits(argjson,"destsatoshis");
qp->txfee = j64bits(argjson,"txfee");
qp->desttxfee = j64bits(argjson,"desttxfee");
return(0);
}
int32_t LP_quoteinfoinit(struct LP_quoteinfo *qp,struct LP_utxoinfo *utxo,char *destcoin,double price)
{
memset(qp,0,sizeof(*qp));
qp->timestamp = (uint32_t)time(NULL);
safecopy(qp->destcoin,destcoin,sizeof(qp->destcoin));
if ( (qp->txfee= LP_getestimatedrate(utxo->coin)*LP_AVETXSIZE) < 10000 )
qp->txfee = 10000;
if ( qp->txfee >= utxo->satoshis || qp->txfee >= utxo->value2 || utxo->value2 < LP_DEPOSITSATOSHIS(utxo->satoshis) )
return(-1);
qp->txid = utxo->txid;
qp->vout = utxo->vout;
qp->txid2 = utxo->txid2;
qp->vout2 = utxo->vout2;
qp->satoshis = utxo->satoshis - qp->txfee;
qp->destsatoshis = qp->satoshis * price;
if ( (qp->desttxfee= LP_getestimatedrate(qp->destcoin) * LP_AVETXSIZE) < 10000 )
qp->desttxfee = 10000;
if ( qp->desttxfee >= qp->destsatoshis )
return(-2);
qp->destsatoshis -= qp->desttxfee;
safecopy(qp->srccoin,utxo->coin,sizeof(qp->srccoin));
safecopy(qp->coinaddr,utxo->coinaddr,sizeof(qp->coinaddr));
qp->srchash = LP_pubkey(LP_privkey(utxo->coinaddr));
return(0);
}
int32_t LP_quoteinfoset(struct LP_quoteinfo *qp,uint32_t timestamp,uint32_t quotetime,uint64_t value,uint64_t txfee,uint64_t destsatoshis,uint64_t desttxfee,bits256 desttxid,int32_t destvout,bits256 desthash,char *destaddr)
{
if ( txfee != qp->txfee )
{
if ( txfee >= value )
return(-1);
qp->txfee = txfee;
qp->satoshis = value - txfee;
}
qp->timestamp = timestamp;
qp->quotetime = quotetime;
qp->destsatoshis = destsatoshis;
qp->desttxfee = desttxfee;
qp->desttxid = desttxid;
qp->destvout = destvout;
qp->desthash = desthash;
safecopy(qp->destaddr,destaddr,sizeof(qp->destaddr));
return(0);
}
char *LP_quotereceived(cJSON *argjson)
{
struct LP_cacheinfo *ptr; double price; struct LP_quoteinfo Q;
LP_quoteparse(&Q,argjson);
price = (double)(Q.destsatoshis + Q.desttxfee) / (Q.satoshis + Q.txfee);
if ( (ptr= LP_cacheadd(Q.srccoin,Q.destcoin,Q.txid,Q.vout,price,&Q)) != 0 )
{
ptr->Q = Q;
//char str[65]; printf("received.(%s) quote %.8f\n",bits256_str(str,Q.txid),price);
return(clonestr("{\"result\":\"updated\"}"));
} else return(clonestr("{\"error\":\"nullptr\"}"));
}
int32_t LP_sizematch(uint64_t mysatoshis,uint64_t othersatoshis)
{
if ( mysatoshis >= othersatoshis )
return(0);
else return(-1);
}
int32_t LP_arrayfind(cJSON *array,bits256 txid,int32_t vout)
{
int32_t i,n = cJSON_GetArraySize(array); cJSON *item;
for (i=0; i<n; i++)
{
item = jitem(array,i);
if ( vout == jint(item,"vout") && bits256_cmp(txid,jbits256(item,"txid")) == 0 )
return(i);
}
return(-1);
}
cJSON *LP_tradecandidates(struct LP_utxoinfo *myutxo,char *base)
{
struct LP_peerinfo *peer,*tmp; struct LP_quoteinfo Q; char *utxostr,coinstr[16]; cJSON *array,*retarray=0,*item; int32_t i,n,totaladded,added; double price;
if ( (price= LP_price(base,myutxo->coin)) == .0 )
{
printf("no LP_price (%s -> %s)\n",base,myutxo->coin);
return(0);
}
totaladded = 0;
HASH_ITER(hh,LP_peerinfos,peer,tmp)
{
n = added = 0;
if ( (utxostr= issue_LP_clientgetutxos(peer->ipaddr,peer->port,base,100)) != 0 )
{
//printf("%s:%u %s %s\n",peer->ipaddr,peer->port,base,utxostr);
if ( (array= cJSON_Parse(utxostr)) != 0 )
{
if ( is_cJSON_Array(array) != 0 && (n= cJSON_GetArraySize(array)) > 0 )
{
retarray = cJSON_CreateArray();
for (i=0; i<n; i++)
{
item = jitem(array,i);
LP_quoteparse(&Q,item);
safecopy(coinstr,jstr(item,"base"),sizeof(coinstr));
if ( strcmp(coinstr,base) == 0 )
{
if ( LP_iseligible(Q.srccoin,Q.txid,Q.vout,Q.satoshis,Q.txid2,Q.vout2) != 0 )
{
if ( LP_arrayfind(retarray,Q.txid,Q.vout) < 0 )
{
jaddi(retarray,jduplicate(item));
added++;
totaladded++;
}
} else printf("ineligible.(%s)\n",jprint(item,0));
}
}
}
free_json(array);
}
free(utxostr);
}
if ( n == totaladded && added == 0 )
{
printf("n.%d totaladded.%d vs added.%d\n",n,totaladded,added);
break;
}
}
return(retarray);
}
cJSON *LP_autotrade(struct LP_utxoinfo *myutxo,char *base,double maxprice)
{
static bits256 zero;
int32_t i,n,besti,DEXselector=0; cJSON *array,*item,*bestitem=0; struct basilisk_request R; double bestmetric,metric,bestprice=0.,price,prices[100]; struct LP_quoteinfo Q[sizeof(prices)/sizeof(*prices)];
bestprice = 0.;
if ( maxprice == 0. )
maxprice = LP_price(base,myutxo->coin) / 0.975;
if ( (array= LP_tradecandidates(myutxo,base)) != 0 )
{
//printf("candidates.(%s)\nn.%d\n",jprint(array,0),cJSON_GetArraySize(array));
if ( (n= cJSON_GetArraySize(array)) > 0 )
{
memset(prices,0,sizeof(prices));
memset(Q,0,sizeof(Q));
for (i=0; i<n && i<sizeof(prices)/sizeof(*prices); i++)
{
item = jitem(array,i);
LP_quoteparse(&Q[i],item);
if ( (price= jdouble(item,"price")) == 0. )
{
price = LP_query("price",&Q[i],jstr(item,"ipaddr"),jint(item,"port"),base,myutxo->coin,zero);
Q[i].destsatoshis = price * Q[i].satoshis;
}
if ( (prices[i]= price) != 0. && (bestprice == 0. || price < bestprice) )
bestprice = price;
char str[65]; printf("i.%d of %d: (%s) -> txid.%s price %.8f best %.8f dest %.8f\n",i,n,jprint(item,0),bits256_str(str,Q[i].txid),price,bestprice,dstr(Q[i].destsatoshis));
}
if ( bestprice != 0. )
{
bestmetric = 0.;
besti = -1;
for (i=0; i<n && i<sizeof(prices)/sizeof(*prices); i++)
{
if ( (price= prices[i]) != 0. && myutxo->satoshis >= Q[i].destsatoshis+Q[i].desttxfee )
{
metric = price / bestprice;
printf("%f %f %f %f ",price,metric,dstr(Q[i].destsatoshis),metric * metric * metric);
if ( metric < 1.1 )
{
metric = dstr(Q[i].destsatoshis) * metric * metric * metric;
printf("%f\n",metric);
if ( bestmetric == 0. || metric < bestmetric )
{
besti = i;
bestmetric = metric;
}
}
} else printf("(%f %f) ",dstr(myutxo->satoshis),dstr(Q[i].destsatoshis));
}
printf("metrics, best %f\n",bestmetric);
if ( besti >= 0 )//&& bits256_cmp(myutxo->mypub,otherpubs[besti]) == 0 )
{
i = besti;
bestprice = prices[i];
item = jitem(array,i);
bestitem = LP_quotejson(&Q[i]);
printf("bestprice %f vs maxprice %f\n",bestprice,maxprice);
if ( maxprice == 0. || bestprice <= maxprice )
{
Q[i].desttxid = myutxo->txid;
Q[i].destvout = myutxo->vout;
Q[i].feetxid = myutxo->txid2;
Q[i].feevout = myutxo->vout2;
strcpy(Q[i].destaddr,myutxo->coinaddr);
price = LP_query("request",&Q[i],jstr(item,"ipaddr"),jint(item,"port"),base,myutxo->coin,myutxo->mypub);
if ( jobj(bestitem,"price") != 0 )
jdelete(bestitem,"price");
jaddnum(bestitem,"price",prices[i]);
if ( price <= maxprice )
{
Q[i].desttxid = myutxo->txid;
Q[i].destvout = myutxo->vout;
Q[i].feetxid = myutxo->txid2;
Q[i].feevout = myutxo->vout2;
strcpy(Q[i].destaddr,myutxo->coinaddr);
price = LP_query("connect",&Q[i],jstr(item,"ipaddr"),jint(item,"port"),base,myutxo->coin,myutxo->mypub);
LP_requestinit(&R,Q[i].srchash,Q[i].desthash,base,Q[i].satoshis,Q[i].destcoin,Q[i].destsatoshis,Q[i].timestamp,Q[i].quotetime,DEXselector);
jaddstr(bestitem,"status","connected");
jaddnum(bestitem,"requestid",R.requestid);
jaddnum(bestitem,"quoteid",R.quoteid);
printf("Alice r.%u q.%u\n",R.requestid,R.quoteid);
}
else
{
jaddstr(bestitem,"status","too expensive");
jaddnum(bestitem,"price",price);
jaddnum(bestitem,"maxprice",maxprice);
jaddnum(bestitem,"bestprice",bestprice);
}
}
}
}
free_json(array);
}
}
if ( bestitem == 0 )
return(cJSON_Parse("{\"error\":\"no match found\"}"));
return(bestitem);
}
int32_t LP_priceping(int32_t pubsock,struct LP_utxoinfo *utxo,char *rel,double profitmargin)
{
double price,bid,ask; uint32_t now; cJSON *retjson; struct LP_quoteinfo Q; char *retstr;
if ( (now= (uint32_t)time(NULL)) > utxo->swappending )
utxo->swappending = 0;
if ( now > utxo->published+60 && utxo->swappending == 0 && utxo->pair < 0 && utxo->swap == 0 && (price= LP_myprice(&bid,&ask,utxo->coin,rel)) != 0. )
{
if ( LP_quoteinfoinit(&Q,utxo,rel,price) < 0 )
return(-1);
Q.timestamp = (uint32_t)time(NULL);
retjson = LP_quotejson(&Q);
jaddstr(retjson,"method","quote");
retstr = jprint(retjson,1);
//printf("PING.(%s)\n",retstr);
LP_send(pubsock,retstr,1);
utxo->published = now;
return(0);
}
return(-1);
}