/********************************************************************\
 * policy.h -- Implement Accounting Policy                          *
 *                                                                  *
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 * modify it under the terms of the GNU General Public License as   *
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\********************************************************************/
/** @addtogroup Engine
    @{ */
/** @addtogroup Policy Accounting Policy (FIFO/LIFO)
 *  This file implements Accounting Policy.  The Accounting Policy
 *  determines how Splits are assigned to Lots.  The contents
 *  of a Lot determines the Gains on that Lot.  The default policy
 *  is the FIFO policy: the first thing bought is also the first
 *  thing sold.
 @{ */

/** @file policy.h
 *  @brief Implement Accounting Policy.
 *  @author Created by Linas Vepstas August 2003
 *  @author Copyright (c) 2003,2004 Linas Vepstas <linas@linas.org>
 */

#ifndef XACC_POLICY_H
#define XACC_POLICY_H

#ifdef __cplusplus
extern "C" {
#endif

typedef struct gncpolicy_s GNCPolicy;

/** Valid Policy List
 *  Provides a glist of implemented policies.
 *
 *  List must be freed with g_list_free().
 */
GList * gnc_get_valid_policy_list (void);

/** Valid Policy Name
 *  Uses the Valid Policy List to determine if a policy name is valid.
 */
gboolean gnc_valid_policy_name (const gchar *policy_name);

const char *PolicyGetName (const GNCPolicy *pcy);

const char *PolicyGetDescription (const GNCPolicy *pcy);

const char *PolicyGetHint (const GNCPolicy *pcy);

/** First-in, First-out Policy
 *  This policy will create FIFO Lots.  FIFO Lots have the following
 *  properties:
 *  -- The lot is started with the earliest posted split that isn't
 *     a part of another lot already.
 *  -- Splits are added to the lot in date order, with earliest splits
 *     added first.
 *  -- All splits in the lot share the same transaction currency as
 *     the split that opened the lot (if book-currency book option
 *     selected, this will always be book currency).
 */
GNCPolicy *xaccGetFIFOPolicy (void);

/** Last-in, Last-out Policy
 *  This policy will create LIFO Lots.  LIFO Lots have the following
 *  properties:
 *  -- The lot is started with the latest posted split that isn't
 *     a part of another lot already.
 *  -- Splits are added to the lot in date order, with latest splits
 *     added first.
 *  -- All splits in the lot share the same transaction currency as
 *     the split that opened the lot (if book-currency book option
 *     selected, this will always be book currency).
 */
GNCPolicy *xaccGetLIFOPolicy (void);

#ifdef __cplusplus
} /* extern "C" */
#endif

#endif /* XACC_POLICY_H */
/** @} */
/** @} */