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#include "pg_inter.h"
#include <VMState.h>
#include <cstdlib>
#include <KayaAPI.h>
#include <cstring>
void* pg_connect(wchar_t* rawconninfo)
{
char* conninfo = wctostr(rawconninfo);
PGconn* pc = PQconnectdb(conninfo);
PGCon * pgc = new PGCon();
pgc->con = pc;
pgc->ok = 1;
// cout << pc << "," << pgc << endl;
// cout << PQstatus(pc) << endl;
if (pc==NULL || PQstatus(pc) == CONNECTION_BAD)
{
pgc->ok = 0;
}
return (void*)pgc;
}
bool pg_ok(void* conn)
{
PGCon* pgc = (PGCon*)conn;
// cout << pgc->ok << endl;
return pgc->ok;
}
wchar_t* pg_getError(void* conn)
{
PGconn* pgc = ((PGCon*)conn)->con;
return strtowc(PQerrorMessage(pgc));
}
DBtype getDBtype(wchar_t* rawval)
{
char* val = wctostr(rawval);
if (strncmp(val,"int",3)==0 && val[3]!='8') { // limit to 32 bit
return DBINT;
}
else if (strncmp(val,"float",5)==0) {
return DBFLOAT;
}
else if (strcmp(val,"bool")==0) {
return DBBOOL;
}
else {
return DBTEXT;
}
}
// Work out what OIDs mean what types, so we can build the right structure
// kaya-side.
void pg_getTypeIDs(VMState* vm, PGCon* pgc)
{
if (pgc->typids.size()!=0) {
return; // Already done it
}
PGresult *res = PQexec(pgc->con,"SELECT oid,* FROM pg_type");
int numrows = PQntuples(res);
for(int i = 0; i<numrows; i++) {
char* val = PQgetvalue(res,i,1); // Get type name
int oid = atoi(PQgetvalue(res,i,0)); // Get oid
pgc->typids[oid] = getDBtype(strtowc(val));
// printf("%d: %s\n", oid, val);
}
}
void* pg_exec(void* vmptr,void* conn,wchar_t* rawquery, KayaValue err)
{
char* query = wctostr(rawquery);
VMState* vm = (VMState*)vmptr;
PGCon* pgc = (PGCon*)conn;
pg_getTypeIDs(vm,pgc);
PGresult *res = PQexec(pgc->con,query);
if (res==NULL) {
KayaSetString(err, KSTRING(PQerrorMessage(pgc->con)));
return NULL;
}
if ((PQresultStatus(res)!=PGRES_COMMAND_OK)
&& (PQresultStatus(res) != PGRES_TUPLES_OK)) {
KayaSetString(err, KSTRING(PQresultErrorMessage(res)));
return NULL;
}
int numrows = PQntuples(res);
int numflds = PQnfields(res);
KayaArray col_names = newKayaArray(numflds);
for (int i = 0; i<numflds; i++)
KayaArrayPush(col_names, KayaString(strtowc(PQfname(res,i))));
KayaArray resarray = newKayaArray(numrows);
for(int i = 0; i<numrows; i++) {
KayaArray row = newKayaArray(numflds);
for(int j = 0; j<numflds; j++) {
char* val = PQgetvalue(res,i,j);
KayaValue pv,fld;
Oid ty = PQftype(res,j);
switch(pgc->typids[ty]) {
case DBINT:
/// If it's an int, make a DBInt(val)
pv = KayaInt(atoi(val));
fld = KayaUnion(1,1);
KayaUnionSetArg(fld,0,pv);
KayaArrayPush(row,fld);
break;
case DBFLOAT:
/// If it's a float, make a DBFloat(val)
pv = KayaFloat(atof(val));
fld = KayaUnion(2,1);
KayaUnionSetArg(fld,0,pv);
KayaArrayPush(row,fld);
break;
case DBBOOL:
/// If it's a bool, make a DBBool(val)
if (val[0]=='t') {
pv = KayaInt(1);
} else {
pv = KayaInt(0);
}
fld = KayaUnion(4,1);
KayaUnionSetArg(fld,0,pv);
KayaArrayPush(row,fld);
break;
case DBTIME:
/// TODO: If it's a date, parse it and make a timestamp
default:
/// Default is to make a DBText
pv = KayaString(strtowc(val));
fld = KayaUnion(0,1);
KayaUnionSetArg(fld,0,pv);
KayaArrayPush(row,fld);
}
}
KayaArrayPush(resarray,KayaArrayVal(row));
}
PGRes* pgr = new PGRes();
pgr -> res_table = resarray;
pgr -> rows = numrows;
pgr -> cols = numflds;
pgr -> col_names = col_names;
PQclear(res);
return pgr;
}
Array* pg_getstrs(void* res)
{
return ((PGRes*)res)->res_table;
}
int pg_numrows(void* res)
{
return ((PGRes*)res)->rows;
}
int pg_numcols(void* res)
{
return ((PGRes*)res)->cols;
}
Array* pg_colnames(void* res)
{
return ((PGRes*)res)->col_names;
}
void pg_close(void* conn)
{
PQfinish(((PGCon*)conn)->con);
}
// not genuine prepared statements for now
void* do_pg_prepare(wchar_t* query) {
return (void*)CSTRING(query);
}
void* pg_execp(void* vmptr,void* conn,void* queryptr, KayaValue err, KArray params) {
char* query = (char*)queryptr;
VMState* vm = (VMState*)vmptr;
PGCon* pgc = (PGCon*)conn;
pg_getTypeIDs(vm,pgc);
int sz = KayaArraySize(params);
char** cparams;
if (sz == 0) {
cparams = NULL;
} else {
cparams = (char**)malloc(sizeof(char*)*sz);
for (int i=0;i<sz;i++) {
KValue val = KayaArrayLookup(params,i);
if (KayaUnionGetTag(val) == 0) {
cparams[i] = NULL;
} else {
cparams[i] = CSTRING(KayaGetString(KayaUnionGetArg(val,0)));
}
}
}
PGresult *res = PQexecParams(pgc->con,query,
sz,// number of params
NULL, // untyped
cparams, // params
NULL, // text params
NULL, // text params
0
);
if (cparams != NULL) {
free(cparams);
}
if (res==NULL) {
KayaSetString(err, KSTRING(PQerrorMessage(pgc->con)));
return NULL;
}
if ((PQresultStatus(res)!=PGRES_COMMAND_OK)
&& (PQresultStatus(res) != PGRES_TUPLES_OK)) {
KayaSetString(err, KSTRING(PQresultErrorMessage(res)));
return NULL;
}
int numrows = PQntuples(res);
int numflds = PQnfields(res);
KayaArray resarray = newKayaArray(numrows);
for(int i = 0; i<numrows; i++) {
KayaArray row = newKayaArray(numflds);
for(int j = 0; j<numflds; j++) {
char* val = PQgetvalue(res,i,j);
KayaValue pv,fld;
Oid ty = PQftype(res,j);
switch(pgc->typids[ty]) {
case DBINT:
/// If it's an int, make a DBInt(val)
pv = KayaInt(atoi(val));
fld = KayaUnion(1,1);
KayaUnionSetArg(fld,0,pv);
KayaArrayPush(row,fld);
break;
case DBFLOAT:
/// If it's a float, make a DBFloat(val)
pv = KayaFloat(atof(val));
fld = KayaUnion(2,1);
KayaUnionSetArg(fld,0,pv);
KayaArrayPush(row,fld);
break;
case DBBOOL:
/// If it's a bool, make a DBBool(val)
if (val[0]=='t') {
pv = KayaInt(1);
} else {
pv = KayaInt(0);
}
fld = KayaUnion(4,1);
KayaUnionSetArg(fld,0,pv);
KayaArrayPush(row,fld);
break;
case DBTIME:
/// TODO: If it's a date, parse it and make a timestamp
default:
/// Default is to make a DBText
pv = KayaString(strtowc(val));
fld = KayaUnion(0,1);
KayaUnionSetArg(fld,0,pv);
KayaArrayPush(row,fld);
}
}
KayaArrayPush(resarray,KayaArrayVal(row));
}
PGRes* pgr = new PGRes();
pgr -> res_table = resarray;
pgr -> rows = numrows;
pgr -> cols = numflds;
PQclear(res);
return pgr;
}
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