gnc-pricedb.h

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/********************************************************************
 * gnc-pricedb.h -- a simple price database for gnucash.            *
 *                                                                  *
 * 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                   *
 *                                                                  *
 *******************************************************************/

#ifndef GNC_PRICEDB_H
#define GNC_PRICEDB_H

typedef struct _GncPriceClass GNCPriceClass;
typedef struct _GncPriceDBClass GNCPriceDBClass;

#include <stdio.h>
#include "qof.h"
#include "gnc-commodity.h"
#include "gnc-engine.h"

/* --- type macros --- */
#define GNC_TYPE_PRICE            (gnc_price_get_type ())
#define GNC_PRICE(o)              \
     (G_TYPE_CHECK_INSTANCE_CAST ((o), GNC_TYPE_PRICE, GNCPrice))
#define GNC_PRICE_CLASS(k)        \
     (G_TYPE_CHECK_CLASS_CAST((k), GNC_TYPE_PRICE, GNCPriceClass))
#define GNC_IS_PRICE(o)           \
     (G_TYPE_CHECK_INSTANCE_TYPE ((o), GNC_TYPE_PRICE))
#define GNC_IS_PRICE_CLASS(k)     \
     (G_TYPE_CHECK_CLASS_TYPE ((k), GNC_TYPE_PRICE))
#define GNC_PRICE_GET_CLASS(o)    \
     (G_TYPE_INSTANCE_GET_CLASS ((o), GNC_TYPE_PRICE, GNCPriceClass))
GType gnc_price_get_type(void);

/* --- type macros --- */
#define GNC_TYPE_PRICEDB            (gnc_pricedb_get_type ())
#define GNC_PRICEDB(o)              \
     (G_TYPE_CHECK_INSTANCE_CAST ((o), GNC_TYPE_PRICEDB, GNCPriceDB))
#define GNC_PRICEDB_CLASS(k)        \
     (G_TYPE_CHECK_CLASS_CAST((k), GNC_TYPE_PRICEDB, GNCPriceDBClass))
#define GNC_IS_PRICEDB(o)           \
     (G_TYPE_CHECK_INSTANCE_TYPE ((o), GNC_TYPE_PRICEDB))
#define GNC_IS_PRICEDB_CLASS(k)     \
     (G_TYPE_CHECK_CLASS_TYPE ((k), GNC_TYPE_PRICEDB))
#define GNC_PRICEDB_GET_CLASS(o)    \
     (G_TYPE_INSTANCE_GET_CLASS ((o), GNC_TYPE_PRICEDB, GNCPriceDBClass))
GType gnc_pricedb_get_type(void);


/* ================================================================ */

typedef struct gnc_price_lookup_s GNCPriceLookup;
typedef GList PriceList;

/* ------------------ */
GNCPrice *gnc_price_create(QofBook *book);

GNCPrice *gnc_price_clone(GNCPrice* p, QofBook *book);
/* ------------------ */
void      gnc_price_ref(GNCPrice *p);

void      gnc_price_unref(GNCPrice *p);
/* ------------------ */
/* As mentioned above, all of the setters store copies of the data
 * given, with the exception of the commodity field which just stores
 * the pointer given.  It is assumed that commodities are a global
 * resource and are pointer unique. 
 *
 * Invocations of the setters should be wrapped with calls to
 * gnc_price_begin_edit() and commit_edit().  The begin/commit
 * calls help ensure that the local price db is synchronized with 
 * the backend.
 */
void gnc_price_begin_edit (GNCPrice *p);
void gnc_price_commit_edit (GNCPrice *p);

void gnc_price_set_commodity(GNCPrice *p, gnc_commodity *c);
void gnc_price_set_currency(GNCPrice *p, gnc_commodity *c);
void gnc_price_set_time(GNCPrice *p, Timespec t);
void gnc_price_set_source(GNCPrice *p, const char *source);
void gnc_price_set_typestr(GNCPrice *p, const char* type);
void gnc_price_set_value(GNCPrice *p, gnc_numeric value);
/* ------------------ */
GNCPrice *      gnc_price_lookup (const GUID *guid, QofBook *book);
gnc_commodity * gnc_price_get_commodity(const GNCPrice *p);
gnc_commodity * gnc_price_get_currency(const GNCPrice *p);
Timespec        gnc_price_get_time(const GNCPrice *p);
const char *    gnc_price_get_source(const GNCPrice *p);
const char *    gnc_price_get_typestr(const GNCPrice *p);
gnc_numeric     gnc_price_get_value(const GNCPrice *p);
gboolean        gnc_price_equal(const GNCPrice *p1, const GNCPrice *p2);

#define gnc_price_get_guid(X)    qof_entity_get_guid(QOF_INSTANCE(X))
#define gnc_price_return_guid(X) (*(qof_entity_get_guid(QOF_INSTANCE(X))))
#define gnc_price_get_book(X)    qof_instance_get_book(QOF_INSTANCE(X))

/* ================================================================ */
gboolean gnc_price_list_insert(PriceList **prices, GNCPrice *p,
                               gboolean check_dupl);

gboolean gnc_price_list_remove(PriceList **prices, GNCPrice *p);

void     gnc_price_list_destroy(PriceList *prices);

gboolean gnc_price_list_equal(PriceList *prices1, PriceList *prices2);
/* ================================================================ */
typedef struct gnc_price_db_s GNCPriceDB;

/* XXX backwards-compat defines, remove these someday */
#define gnc_book_get_pricedb  gnc_pricedb_get_db

GNCPriceDB * gnc_pricedb_get_db(QofBook *book);
GNCPriceDB * gnc_collection_get_pricedb(QofCollection *col);

void gnc_pricedb_destroy(GNCPriceDB *db);

void gnc_pricedb_begin_edit (GNCPriceDB *);
void gnc_pricedb_commit_edit (GNCPriceDB *);

void gnc_pricedb_set_bulk_update(GNCPriceDB *db, gboolean bulk_update);

gboolean     gnc_pricedb_add_price(GNCPriceDB *db, GNCPrice *p);

gboolean     gnc_pricedb_remove_price(GNCPriceDB *db, GNCPrice *p);

gboolean     gnc_pricedb_remove_old_prices(GNCPriceDB *db, Timespec cutoff,
                                           const gboolean delete_user, gboolean delete_last);

GNCPrice   * gnc_pricedb_lookup_latest(GNCPriceDB *db,
                                       const gnc_commodity *commodity,
                                       const gnc_commodity *currency);

PriceList * gnc_pricedb_lookup_latest_any_currency(GNCPriceDB *db,
                                                 const gnc_commodity *commodity);

gboolean     gnc_pricedb_has_prices(GNCPriceDB *db,
                                    const gnc_commodity *commodity,
                                    const gnc_commodity *currency);

PriceList * gnc_pricedb_get_prices(GNCPriceDB *db,
                                 const gnc_commodity *commodity,
                                 const gnc_commodity *currency);

PriceList * gnc_pricedb_lookup_at_time(GNCPriceDB *db,
                                     const gnc_commodity *commodity,
                                     const gnc_commodity *currency,
                                     Timespec t);

PriceList * gnc_pricedb_lookup_at_time_any_currency(GNCPriceDB *db,
                                                  const gnc_commodity *c,
                                                  Timespec t);

PriceList * gnc_pricedb_lookup_day(GNCPriceDB *db,
                                 const gnc_commodity *commodity,
                                 const gnc_commodity *currency,
                                 Timespec t);

PriceList * gnc_pricedb_lookup_day_any_currency(GNCPriceDB *db,
                                              const gnc_commodity *c,
                                              Timespec t);

GNCPrice   * gnc_pricedb_lookup_nearest_in_time(GNCPriceDB *db,
                                                const gnc_commodity *c,
                                                const gnc_commodity *currency,
                                                Timespec t);

PriceList * gnc_pricedb_lookup_nearest_in_time_any_currency(GNCPriceDB *db,
                                                          const gnc_commodity *c,
                                                          Timespec t);
GNCPrice * gnc_pricedb_lookup_latest_before(GNCPriceDB *db,
                                            gnc_commodity *c,
                                            gnc_commodity *currency,
                                            Timespec t);

PriceList * gnc_pricedb_lookup_latest_before_any_currency(GNCPriceDB *db,
                                                        gnc_commodity *c,
                                                        Timespec t);


gnc_numeric
gnc_pricedb_convert_balance_latest_price(GNCPriceDB *pdb,
                                         gnc_numeric balance,
                                         const gnc_commodity *balance_currency,
                                         const gnc_commodity *new_currency);

gnc_numeric
gnc_pricedb_convert_balance_nearest_price(GNCPriceDB *pdb,
                                          gnc_numeric balance,
                                          const gnc_commodity *balance_currency,
                                          const gnc_commodity *new_currency,
                                          Timespec t);

gnc_numeric
gnc_pricedb_convert_balance_latest_before(GNCPriceDB *pdb,
                                          gnc_numeric balance,
                                          gnc_commodity *balance_currency,
                                          gnc_commodity *new_currency,
                                          Timespec t);


gboolean     gnc_pricedb_foreach_price(GNCPriceDB *db,
                                       gboolean (*f)(GNCPrice *p,
                                                     gpointer user_data),
                                       gpointer user_data,
                                       gboolean stable_order);

guint gnc_pricedb_get_num_prices(GNCPriceDB *db);

gboolean gnc_pricedb_equal (GNCPriceDB *db1, GNCPriceDB *db2);

void gnc_price_print(GNCPrice *db, FILE *f, int indent);
void gnc_pricedb_print_contents(GNCPriceDB *db, FILE *f);


#define PRICE_COMMODITY  "price-commodity"
#define PRICE_CURRENCY   "price-currency"
#define PRICE_DATE       "price-date"
#define PRICE_SOURCE     "price-source"
#define PRICE_TYPE       "price-type"
#define PRICE_VALUE      "price-value"

#endif /* GNC_PRICEDB_H */

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