/*
 * gncBusGuile.c -- Business Guile Helper Functions
 * Copyright (C) 2003 Derek Atkins
 * Author: Derek Atkins <warlord@MIT.EDU>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, contact:
 *
 * Free Software Foundation           Voice:  +1-617-542-5942
 * 51 Franklin Street, Fifth Floor    Fax:    +1-617-542-2652
 * Boston, MA  02110-1301,  USA       gnu@gnu.org
 */

#include <config.h>

#include "gncBusGuile.h"
#include "engine-helpers.h"
#include "engine-helpers-guile.h"
#include "swig-runtime.h"
#include "guile-mappings.h"
#define FUNC_NAME G_STRFUNC

static swig_type_info *
get_acct_type ()
{
    static swig_type_info * account_type = NULL;

    if (!account_type)
        account_type = SWIG_TypeQuery("_p_Account");

    return account_type;
}

GncAccountValue * gnc_scm_to_account_value_ptr (SCM valuearg)
{
    GncAccountValue *res;
    Account *acc = NULL;
    gnc_numeric value;
    swig_type_info * account_type = get_acct_type();
    SCM val;

    /* Get the account */
    val = SCM_CAR (valuearg);
    if (!SWIG_IsPointerOfType (val, account_type))
        return NULL;

    acc = SWIG_MustGetPtr(val, account_type, 1, 0);

    /* Get the value */
    val = SCM_CDR (valuearg);
    value = gnc_scm_to_numeric (val);

    /* Build and return the object */
    res = g_new0 (GncAccountValue, 1);
    res->account = acc;
    res->value = value;
    return res;
}

SCM gnc_account_value_ptr_to_scm (GncAccountValue *av)
{
    swig_type_info * account_type = get_acct_type();
    gnc_commodity * com;
    gnc_numeric val;

    if (!av) return SCM_BOOL_F;

    com = xaccAccountGetCommodity (av->account);
    val = gnc_numeric_convert (av->value, gnc_commodity_get_fraction (com),
                               GNC_HOW_RND_ROUND_HALF_UP);

    return scm_cons (SWIG_NewPointerObj(av->account, account_type, 0),
                     gnc_numeric_to_scm (val));
}