#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <arpa/inet.h>
#include <dlfcn.h>

#undef PERL_IMPLICIT_SYS
#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#include "c/common.c"
#include "c/jsonfmt.c"
#include "c/jsonparse.c"
#include "c/libpq.h"
#include "c/pgtypes.c"
#include "c/pgconn.c"
#include "c/pgst.c"


#define FUPG_CONN_COOKIE \
    if (c->cookie) fu_confess("Invalid operation on the top-level connection while a transaction object exists")

#define FUPG_TXN_COOKIE \
    if (!t->cookie) fu_confess("Invalid operation on a transaction that has already been marked as done"); \
    if (t->cookie != t->conn->cookie) fu_confess("Invalid operation on transaction while a subtransaction object exists")

#define FUPG_ST_COOKIE \
    if (st->cookie != st->conn->cookie) fu_confess("Invalid cross-transaction operation on statement object")

#define FUPG_STFLAGS do {\
        if (!ix) ix = FUPG_CACHE;\
        if (items == 1 || SvTRUE(ST(1))) x->stflags |= ix; \
        else x->stflags &= ~ix; \
        XSRETURN(1); \
    } while(0)

MODULE = FU

PROTOTYPES: DISABLE


TYPEMAP: <<EOT
TYPEMAP
fupg_conn *   FUPG_CONN
fupg_txn *    FUPG_TXN
fupg_st *     FUPG_ST

INPUT
FUPG_CONN
    if (sv_derived_from($arg, \"FU::Pg::conn\")) $var = (fupg_conn *)SvIVX(SvRV($arg));
    else fu_confess(\"invalid connection object\");

FUPG_TXN
    if (sv_derived_from($arg, \"FU::Pg::txn\")) $var = (fupg_txn *)SvIVX(SvRV($arg));
    else fu_confess(\"invalid transaction object\");

FUPG_ST
    if (sv_derived_from($arg, \"FU::Pg::st\")) $var = (fupg_st *)SvIVX(SvRV($arg));
    else fu_confess(\"invalid statement object\");
#"
EOT


MODULE = FU   PACKAGE = FU::Util

void json_format(SV *val, ...)
  CODE:
    ST(0) = fujson_fmt_xs(aTHX_ ax, items, val);

void json_parse(SV *val, ...)
  CODE:
    ST(0) = fujson_parse_xs(aTHX_ ax, items, val);



MODULE = FU   PACKAGE = FU::Pg

void _load_libpq()
  CODE:
    if (!PQconnectdb) fupg_load();

void lib_version()
  CODE:
    XSRETURN_IV(PQlibVersion());

void connect(const char *pkg, const char *conninfo)
  CODE:
    (void)pkg;
    ST(0) = fupg_connect(aTHX_ conninfo);


MODULE = FU   PACKAGE = FU::Pg::conn

void server_version(fupg_conn *c)
  CODE:
    XSRETURN_IV(PQserverVersion(c->conn));

void _debug_trace(fupg_conn *c, bool on)
  CODE:
    if (on) PQtrace(c->conn, stderr);
    else PQuntrace(c->conn);
    ST(0) = c->self;

void status(fupg_conn *c)
  CODE:
    ST(0) = sv_2mortal(newSVpv(fupg_conn_status(c), 0));

void cache(fupg_conn *x, ...)
  ALIAS:
    FU::Pg::conn::text_params  = FUPG_TEXT_PARAMS
    FU::Pg::conn::text_results = FUPG_TEXT_RESULTS
    FU::Pg::conn::text         = FUPG_TEXT
  CODE:
    FUPG_STFLAGS;

void disconnect(fupg_conn *c)
  CODE:
    fupg_conn_disconnect(c);

void DESTROY(fupg_conn *c)
  CODE:
    fupg_conn_destroy(c);

void txn(fupg_conn *c)
  CODE:
    FUPG_CONN_COOKIE;
    ST(0) = fupg_conn_txn(c);

void exec(fupg_conn *c, SV *sv)
  CODE:
    FUPG_CONN_COOKIE;
    ST(0) = fupg_exec(aTHX_ c, SvPVutf8_nolen(sv));

void q(fupg_conn *c, SV *sv, ...)
  CODE:
    FUPG_CONN_COOKIE;
    ST(0) = fupg_q(aTHX_ c, c->stflags, SvPVutf8_nolen(sv), ax, items);


MODULE = FU   PACKAGE = FU::Pg::txn

void DESTROY(fupg_txn *t)
  CODE:
    fupg_txn_destroy(t);

void cache(fupg_txn *x, ...)
  ALIAS:
    FU::Pg::txn::text_params  = FUPG_TEXT_PARAMS
    FU::Pg::txn::text_results = FUPG_TEXT_RESULTS
    FU::Pg::txn::text         = FUPG_TEXT
  CODE:
    FUPG_STFLAGS;

void status(fupg_txn *t)
  CODE:
    ST(0) = sv_2mortal(newSVpv(fupg_txn_status(t), 0));

void txn(fupg_txn *t)
  CODE:
    FUPG_TXN_COOKIE;
    ST(0) = fupg_txn_txn(t);

void commit(fupg_txn *t)
  CODE:
    FUPG_TXN_COOKIE;
    fupg_txn_commit(t);

void rollback(fupg_txn *t)
  CODE:
    FUPG_TXN_COOKIE;
    fupg_txn_rollback(t);

void exec(fupg_txn *t, SV *sv)
  CODE:
    FUPG_TXN_COOKIE;
    ST(0) = fupg_exec(aTHX_ t->conn, SvPVutf8_nolen(sv));

void q(fupg_txn *t, SV *sv, ...)
  CODE:
    FUPG_TXN_COOKIE;
    ST(0) = fupg_q(aTHX_ t->conn, t->stflags, SvPVutf8_nolen(sv), ax, items);


MODULE = FU   PACKAGE = FU::Pg::st

void cache(fupg_st *x, ...)
  ALIAS:
    FU::Pg::st::text_params  = FUPG_TEXT_PARAMS
    FU::Pg::st::text_results = FUPG_TEXT_RESULTS
    FU::Pg::st::text         = FUPG_TEXT
  CODE:
    FUPG_STFLAGS;

void param_types(fupg_st *st)
  CODE:
    FUPG_ST_COOKIE;
    ST(0) = fupg_st_param_types(aTHX_ st);

void columns(fupg_st *st)
  CODE:
    FUPG_ST_COOKIE;
    ST(0) = fupg_st_columns(aTHX_ st);

void exec(fupg_st *st)
  CODE:
    FUPG_ST_COOKIE;
    ST(0) = fupg_st_exec(aTHX_ st);

void val(fupg_st *st)
  CODE:
    FUPG_ST_COOKIE;
    ST(0) = fupg_st_val(aTHX_ st);

void rowl(fupg_st *st)
  CODE:
    FUPG_ST_COOKIE;
    XSRETURN(fupg_st_rowl(aTHX_ st, ax));

void rowa(fupg_st *st)
  CODE:
    FUPG_ST_COOKIE;
    ST(0) = fupg_st_rowa(aTHX_ st);

void rowh(fupg_st *st)
  CODE:
    FUPG_ST_COOKIE;
    ST(0) = fupg_st_rowh(aTHX_ st);

void alla(fupg_st *st)
  CODE:
    FUPG_ST_COOKIE;
    ST(0) = fupg_st_alla(aTHX_ st);

void allh(fupg_st *st)
  CODE:
    FUPG_ST_COOKIE;
    ST(0) = fupg_st_allh(aTHX_ st);

void flat(fupg_st *st)
  CODE:
    FUPG_ST_COOKIE;
    ST(0) = fupg_st_flat(aTHX_ st);

void kvv(fupg_st *st)
  CODE:
    FUPG_ST_COOKIE;
    ST(0) = fupg_st_kvv(aTHX_ st);

void kva(fupg_st *st)
  CODE:
    FUPG_ST_COOKIE;
    ST(0) = fupg_st_kva(aTHX_ st);

void kvh(fupg_st *st)
  CODE:
    FUPG_ST_COOKIE;
    ST(0) = fupg_st_kvh(aTHX_ st);

void DESTROY(fupg_st *st)
  CODE:
    fupg_st_destroy(st);