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/** @addtogroup Engine
    @{ */
/** @addtogroup Account
    Splits are grouped into Accounts which are also known
    as "Ledgers" in accounting practice. Each Account consists of a list of
    Splits that debit that Account. To ensure consistency, if a Split points
    to an Account, then the Account must point to the Split, and vice-versa.
    A Split can belong to at most one Account. Besides merely containing a
    list of Splits, the Account structure also gives the Account a name, a
    code number, description and notes fields, a key-value frame, a pointer
    to the commodity that is used for all splits in this account. The
    commodity can be the name of anything traded and tradeable: a stock
    (e.g. "IBM", "McDonald's"), a currency (e.g. "USD", "GBP"), or
    anything added to the commodity table.

    Accounts can be arranged in a hierarchical tree.  By accounting
    convention, the value of an Account is equal to the value of all of its
    Splits plus the value of all of its sub-Accounts.
    @{ */
/** @file Account.h
    @brief Account handling public routines
    @author Copyright (C) 1997 Robin D. Clark
    @author Copyright (C) 1997-2003 Linas Vepstas <linas@linas.org>
*/

#ifndef XACC_ACCOUNT_H
#define XACC_ACCOUNT_H
#include "qof.h"
#include "gnc-engine.h"
#include "policy.h"

#ifdef __cplusplus
extern "C" {
#endif
typedef gnc_numeric (*xaccGetBalanceFn)( const Account *account );

typedef gnc_numeric (*xaccGetBalanceInCurrencyFn) (
    const Account *account, const gnc_commodity *report_commodity,
    gboolean include_children);

typedef gnc_numeric (*xaccGetBalanceAsOfDateFn) (
    Account *account, time64 date);

typedef void (*AccountCb)(Account *a, gpointer data);
typedef gpointer (*AccountCb2)(Account *a, gpointer data);

typedef struct
{
    QofInstanceClass parent_class;
} AccountClass;

typedef struct
{
    Account *acc;
    QofBook *book;
} GncImportMatchMap;

/* --- type macros --- */
#define GNC_TYPE_ACCOUNT            (gnc_account_get_type ())
#define GNC_ACCOUNT(o)              \
     (G_TYPE_CHECK_INSTANCE_CAST ((o), GNC_TYPE_ACCOUNT, Account))
#define GNC_ACCOUNT_CLASS(k)        \
     (G_TYPE_CHECK_CLASS_CAST((k), GNC_TYPE_ACCOUNT, AccountClass))
#define GNC_IS_ACCOUNT(o)           \
     (G_TYPE_CHECK_INSTANCE_TYPE ((o), GNC_TYPE_ACCOUNT))
#define GNC_IS_ACCOUNT_CLASS(k)     \
     (G_TYPE_CHECK_CLASS_TYPE ((k), GNC_TYPE_ACCOUNT))
#define GNC_ACCOUNT_GET_CLASS(o)    \
     (G_TYPE_INSTANCE_GET_CLASS ((o), GNC_TYPE_ACCOUNT, AccountClass))
/** Returns the GType type system description of the Account class.
 *
 * This must not be confused with the \ref GNCAccountType as returned
 * by xaccAccountGetType(). */
GType gnc_account_get_type(void);

/** The account types are used to determine how the transaction data
 * in the account is displayed.   These values can be safely changed
 * from one release to the next.  Note that if values are added,
 * the file IO translation routines need to be updated. Note
 * also that GUI code depends on these numbers.
 *
 * @note ***IMPORTANT***: If you do change the enumeration names (not the
 * numbers), you need to update xaccAccountTypeEnumAsString --- used
 * for text file exports */

typedef enum
{
    ACCT_TYPE_INVALID = -1, /**< Not a type */
    ACCT_TYPE_NONE = -1,/**< Not a type */

    ACCT_TYPE_BANK = 0,	/**< The bank account type denotes a savings
			 *   or checking account held at a bank.
			 *   Often interest bearing. */
    ACCT_TYPE_CASH = 1,	/**< The cash account type is used to denote a
			 *   shoe-box or pillowcase stuffed with *
			 *   cash. */
    ACCT_TYPE_CREDIT = 3,	/**< The Credit card account is used to denote
			 *   credit (e.g. amex) and debit (e.g. visa,
			 *   mastercard) card accounts */
    ACCT_TYPE_ASSET = 2,	/**< asset (and liability) accounts indicate
			 *   generic, generalized accounts that are
			 *   none of the above. */
    ACCT_TYPE_LIABILITY = 4,/**< liability (and asset) accounts indicate
			   *   generic, generalized accounts that are
			   *   none of the above. */
    ACCT_TYPE_STOCK = 5,	/**< Stock accounts will typically be shown in
			 *   registers which show three columns:
			 *   price, number of shares, and value. */
    ACCT_TYPE_MUTUAL = 6,	/**< Mutual Fund accounts will typically be
			 *   shown in registers which show three
			 *   columns: price, number of shares, and
			 *   value. */
    ACCT_TYPE_CURRENCY = 7,/**< The currency account type indicates that
			  *   the account is a currency trading
			  *   account.  In many ways, a currency
			  *   trading account is like a stock *
			  *   trading account. It is shown in the
			  *   register with three columns: price,
			  *   number of shares, and value. Note:
			  *   Since version 1.7.0, this account is *
			  *   no longer needed to exchange currencies
			  *   between accounts, so this type is
			  *   DEPRECATED. */
    ACCT_TYPE_INCOME = 8,	/**< Income accounts are used to denote
			 *   income */

    ACCT_TYPE_EXPENSE = 9,/**< Expense accounts are used to denote
			 *   expenses. */

    ACCT_TYPE_EQUITY = 10,/**< Equity account is used to balance the
			 *   balance sheet. */

    ACCT_TYPE_RECEIVABLE = 11,/**< A/R account type */

    ACCT_TYPE_PAYABLE = 12,  /**< A/P account type */

    ACCT_TYPE_ROOT = 13, /**< The hidden root account of an account tree. */

    ACCT_TYPE_TRADING = 14, /**< Account used to record multiple commodity transactions.
                           *   This is not the same as ACCT_TYPE_CURRENCY above.
                           *   Multiple commodity transactions have splits in these
                           *   accounts to make the transaction balance in each
                           *   commodity as well as in total value.  */

    NUM_ACCOUNT_TYPES = 15,  /**< stop here; the following types
			    * just aren't ready for prime time */

    /* bank account types */
    ACCT_TYPE_CHECKING = 15, /**< bank account type -- don't use this
			    *   for now, see NUM_ACCOUNT_TYPES  */
    ACCT_TYPE_SAVINGS = 16, /**< bank account type -- don't use this for
			   *   now, see NUM_ACCOUNT_TYPES  */
    ACCT_TYPE_MONEYMRKT = 17, /**< bank account type -- don't use this
			     *   for now, see NUM_ACCOUNT_TYPES  */
    ACCT_TYPE_CREDITLINE = 18, /**< line of credit -- don't use this for
			      *   now, see NUM_ACCOUNT_TYPES  */
    ACCT_TYPE_LAST
} GNCAccountType;



/** @name Account Constructors, Edit/Commit, Comparison
 @{ */

/** Constructor */
Account * xaccMallocAccount (QofBook *book);

/** Create a new root level account.  */
Account * gnc_account_create_root (QofBook *book);

/** The xaccCloneAccount() routine makes a simple copy of the
 *  indicated account, placing it in the indicated book.  It copies
 *  the account type, name, description, and the kvp values;
 *  it does not copy splits/transactions.  The book should have
 *  a commodity table in it that has commodities with the same
 *  unique name as the ones being copied in the account (the
 *  commodities in the clone will be those from the book).
 */
Account * xaccCloneAccount (const Account *source, QofBook *book);

/** The xaccAccountBeginEdit() subroutine is the first phase of
 *    a two-phase-commit wrapper for account updates. */
void xaccAccountBeginEdit (Account *account);

/** ThexaccAccountCommitEdit() subroutine is the second phase of
 *    a two-phase-commit wrapper for account updates. */
void xaccAccountCommitEdit (Account *account);

/** The xaccAccountDestroy() routine can be used to get rid of an
 *    account.  The account should have been opened for editing
 *    (by calling xaccAccountBeginEdit()) before calling this routine.*/
void xaccAccountDestroy (Account *account);

/** Compare two accounts for equality - this is a deep compare. */
gboolean xaccAccountEqual(const Account *a, const Account* b,
                          gboolean check_guids);

/** The xaccAccountOrder() subroutine defines a sorting order on
 *    accounts.  It takes pointers to two accounts, and returns an int < 0 if
 *    the first account is "less than" the second, returns an int > 0 if the
 *    first is "greater than" the second, and 0 if they are equal.  To
 *    determine the sort order, first the account codes are compared,
 *    and if these are equal, then account types, then account
 *    names. If still equal, it compares GUID to ensure that there
 *    aren't any ties.
 */
int xaccAccountOrder (const Account *account_1, const Account *account_2);

/** @} */

/* ------------------ */

/** @name Account lookup and GncGUID routines
 @{ */

/** Returns the account separation character chosen by the user.
 *
 *  @return The character to use.
 */
const gchar *gnc_get_account_separator_string (void);
gunichar gnc_get_account_separator (void);
void gnc_set_account_separator (const gchar *separator);

/*@ dependent @*/
Account *gnc_book_get_root_account(QofBook *book);
void gnc_book_set_root_account(QofBook *book, Account *root);

/** @deprecated */
#define xaccAccountGetGUID(X)     qof_entity_get_guid(QOF_INSTANCE(X))
#define xaccAccountReturnGUID(X) (X ? *(qof_entity_get_guid(QOF_INSTANCE(X))) : *(guid_null()))

/** The xaccAccountLookup() subroutine will return the
 *    account associated with the given id, or NULL
 *    if there is no such account. */
/*@ dependent @*/ Account * xaccAccountLookup (const GncGUID *guid, QofBook *book);
#define xaccAccountLookupDirect(g,b) xaccAccountLookup(&(g),b)

/** @} */

/*  Tests account and descendants -- if all have no splits then return TRUE.
 *  Otherwise if any account or its descendants have split return FALSE.
 */

gboolean gnc_account_and_descendants_empty (Account *acc);

/** Composes a translatable error message showing which account
 *  names clash with the current account separator. Can be called
 *  after gnc_account_list_name_violations to have a consistent
 *  error message in different parts of GnuCash
 *
 *  @param separator The separator character that was verified against
 *  @param invalid_account_names A GList of invalid account names.
 *
 *  @return An error message that can be displayed to the user or logged.
 *          This message string should be freed with g_free when no longer
 *          needed.
 */
gchar *gnc_account_name_violations_errmsg (const gchar *separator, GList* invalid_account_names);

/** Runs through all the accounts and returns a list of account names
 *  that contain the provided separator character. This can be used to
 *  check if certain account names are invalid.
 *
 *  @param book Pointer to the book with accounts to verify
 *  @param separator The separator character to verify against
 *
 *  @return A GList of invalid account names. Should be freed with g_list_free
 *          if no longer needed.
 */
GList *gnc_account_list_name_violations (QofBook *book, const gchar *separator);

/* ------------------ */

/** @name Account general setters/getters
 @{ */

QofBook *gnc_account_get_book(const Account *account);
/** Set the account's type */
void xaccAccountSetType (Account *account, GNCAccountType);
/** Set the account's name */
void xaccAccountSetName (Account *account, const char *name);
/** Set the account's accounting code */
void xaccAccountSetCode (Account *account, const char *code);
/** Set the account's description */
void xaccAccountSetDescription (Account *account, const char *desc);
/** Set the account's Color */
void xaccAccountSetColor (Account *account, const char *color);
/** Set the account's Filter */
void xaccAccountSetFilter (Account *account, const char *filter);
/** Set the account's Sort Order */
void xaccAccountSetSortOrder (Account *account, const char *sortorder);
/** Set the account's Sort Order direction */
void xaccAccountSetSortReversed (Account *account, gboolean sortreversed);
/** Set the account's notes */
void xaccAccountSetNotes (Account *account, const char *notes);
/** Set the last num field of an Account */
void xaccAccountSetLastNum (Account *account, const char *num);
/** Set the account's lot order policy */
void gnc_account_set_policy (Account *account, GNCPolicy *policy);
/** Returns the account's account type.
 *
 * This must not be confused with the \ref GType as returned by
 * gnc_account_get_type(), which is related to glib's type system. */
GNCAccountType xaccAccountGetType (const Account *account);
/** Returns true if the account is a stock, mutual fund or currency,
 * otherwise false. */
gboolean xaccAccountIsPriced(const Account *acc);

/** This function will set the starting commodity balance for this
 *  account.  This routine is intended for use with backends that do
 *  not return the complete list of splits for an account, but rather
 *  return a partial list.  In such a case, the backend will typically
 *  return all of the splits after some certain date, and the
 *  'starting balance' will represent the summation of the splits up
 *  to that date. */
void gnc_account_set_start_balance (Account *acc,
                                    const gnc_numeric start_baln);

/** This function will set the starting cleared commodity balance for
 *  this account.  This routine is intended for use with backends that
 *  do not return the complete list of splits for an account, but
 *  rather return a partial list.  In such a case, the backend will
 *  typically return all of the splits after some certain date, and
 *  the 'starting balance' will represent the summation of the splits
 *  up to that date. */
void gnc_account_set_start_cleared_balance (Account *acc,
        const gnc_numeric start_baln);

/** This function will set the starting reconciled commodity balance
 *  for this account.  This routine is intended for use with backends
 *  that do not return the complete list of splits for an account, but
 *  rather return a partial list.  In such a case, the backend will
 *  typically return all of the splits after some certain date, and
 *  the 'starting balance' will represent the summation of the splits
 *  up to that date. */
void gnc_account_set_start_reconciled_balance (Account *acc,
        const gnc_numeric start_baln);

/** Tell the account that the running balances may be incorrect and
 *  need to be recomputed.
 *
 *  @param acc Set the flag on this account. */
void gnc_account_set_balance_dirty (Account *acc);

/** Tell the account believes that the splits may be incorrectly
 *  sorted and need to be resorted.
 *
 *  @param acc Set the flag on this account. */
void gnc_account_set_sort_dirty (Account *acc);

/** Set the defer balance flag. If defer is true, the account balance
 * is not automatically computed, which can save a lot of time if
 * multiple operations have to be done on the same account. If
 * defer is false, further operations on account will cause the
 * balance to be recomputed as normal.
 *
 *  @param acc Set the flag on this account.
 *
 *  @param defer New value for the flag. */
void gnc_account_set_defer_bal_computation (Account *acc, gboolean defer);

/** Insert the given split from an account.
 *
 *  @param acc The account to which the split should be added.
 *
 *  @param s The split to be added.
 *
 *  @result TRUE is the split is successfully added to the set of
 *  splits in the account.  FALSE if the addition fails for any reason
 *  (including that the split is already in the account). */
gboolean gnc_account_insert_split (Account *acc, Split *s);

/** Remove the given split from an account.
 *
 *  @param acc The account from which the split should be removed.
 *
 *  @param s The split to be removed.
 *
 *  @result TRUE is the split is successfully removed from the set of
 *  splits in the account.  FALSE if the removal fails for any
 *  reason. */
gboolean gnc_account_remove_split (Account *acc, Split *s);

/** Get the account's name */
const char * xaccAccountGetName (const Account *account);
/** Get the account's accounting code */
const char * xaccAccountGetCode (const Account *account);
/** Get the account's description */
const char * xaccAccountGetDescription (const Account *account);
/** Get the account's color */
const char * xaccAccountGetColor (const Account *account);
/** Get the account's filter */
const char * xaccAccountGetFilter (const Account *account);
/** Get the account's Sort Order */
const char * xaccAccountGetSortOrder (const Account *account);
/** Get the account's Sort Order direction */
gboolean xaccAccountGetSortReversed (const Account *account);
/** Get the account's notes */
const char * xaccAccountGetNotes (const Account *account);
/** Get the last num field of an Account */
const char * xaccAccountGetLastNum (const Account *account);
/** Get the account's lot order policy */
GNCPolicy *gnc_account_get_policy (Account *account);
/** Get the account's flag for deferred balance computation */
gboolean gnc_account_get_defer_bal_computation (Account *acc);

/** The following recompute the partial balances (stored with the
 *  transaction) and the total balance, for this account
 */
void xaccAccountRecomputeBalance (Account *);

/** The xaccAccountSortSplits() routine will resort the account's
 *  splits if the sort is dirty. If 'force' is true, the account
 *  is sorted even if the editlevel is not zero.
 */
void xaccAccountSortSplits (Account *acc, gboolean force);

/** The gnc_account_get_full_name routine returns the fully qualified name
 * of the account using the given separator char. The name must be
 * g_free'd after use. The fully qualified name of an account is the
 * concatenation of the names of the account and all its ancestor
 * accounts starting with the topmost account and ending with the
 * given account. Each name is separated by the given character.
 *
 * @note: WAKE UP!
 * Unlike all other gets, the string returned by gnc_account_get_full_name()
 * must be freed by you the user !!!
 * hack alert -- since it breaks the rule of string allocation, maybe this
 * routine should not be in this library, but some utility library?
 */
gchar * gnc_account_get_full_name (const Account *account);

/** Retrieve the gains account used by this account for the indicated
 * currency, creating and recording a new one if necessary.
 *
 * FIXME: There is at present no interface to designate an existing
 * account, and the new account name is hard coded to
 * "Orphaned Gains -- CUR"
 *
 * FIXME: There is no provision for creating separate accounts for
 * anything other than currency, e.g. holding period of a security.
 */
Account * xaccAccountGainsAccount (Account *acc, gnc_commodity *curr);
/** Set a string that identifies the Finance::Quote backend that
 *  should be used to retrieve online prices.  See price-quotes.scm
 *  for more information
 *
 *  @deprecated Price quote information is now stored on the
 *  commodity, not the account. */
void dxaccAccountSetPriceSrc (Account *account, const char *src);
/** Get a string that identifies the Finance::Quote backend that
 *  should be used to retrieve online prices.  See price-quotes.scm
 *  for more information.
 *
 *  @deprecated Price quote information is now stored on the
 *  commodity, not the account. */
const char * dxaccAccountGetPriceSrc (const Account *account);
/** @} */

/** @name Account Commodity setters/getters

 *   Accounts are used to store an amount of 'something', that 'something'
 *   is called the 'commodity'.  An account can only hold one kind of
 *   commodity.  The following are used to get and set the commodity,
 *   and also to set the SCU, the 'Smallest Commodity Unit'.
 *
 * Note that when we say that a 'split' holds an 'amount', that amount
 *   is denominated in the account commodity.  Do not confuse 'amount'
 *   and 'value'.  The 'value' of a split is the value of the amount
 *   expressed in the currency of the transaction.  Thus, for example,
 *   the 'amount' may be 12 apples, where the account commodity is
 *   'apples'.  The value of these 12 apples may be 12 dollars, where
 *   the transaction currency is 'dollars'.
 *
 * The SCU is the 'Smallest Commodity Unit', signifying the smallest
 *   non-zero amount that can be stored in the account.  It is
 *   represented as the integer denominator of a fraction.  Thus,
 *   for example, a SCU of 12 means that 1/12 of something is the
 *   smallest amount that can be stored in the account.  SCU's can
 *   be any value; they do not need to be decimal.  This allows
 *   the use of accounts with unusual, non-decimal commodities and
 *   currencies.
 *
 *   Normally, the SCU is determined by the commodity of the account.
 *   However, this default SCU can be over-ridden and set to an
 *   account-specific value.  This is account-specific value is
 *   called the 'non-standard' value in the documentation below.
 @{
*/

/** Set the account's commodity */
void xaccAccountSetCommodity (Account *account, gnc_commodity *comm);

/** Get the account's commodity  */
/*@ dependent @*/
gnc_commodity * xaccAccountGetCommodity (const Account *account);

/** Returns a gnc_commodity that is a currency, suitable for being a
Transaction's currency. The gnc_commodity is taken either from the current
account, or from the next parent account that has a gnc_commodity that is a
currency. If neither this account nor any of its parent has such a commodity
that is a currency, NULL is returned. In that case, you can use
gnc_default_currency() but you might want to show a warning dialog first. */
gnc_commodity * gnc_account_get_currency_or_parent(const Account* account);

/** Return the SCU for the account.  If a non-standard SCU has been
 *   set for the account, that is returned; else the default SCU for
 *   the account commodity is returned.
 */
int xaccAccountGetCommoditySCU (const Account *account);

/** Return the 'internal' SCU setting.  This returns the over-ride
 *   SCU for the account (which might not be set, and might be zero).  */
int xaccAccountGetCommoditySCUi (const Account *account);

/** Set the SCU for the account. Normally, this routine is not
 *   required, as the default SCU for an account is given by its
 *   commodity.
 */
void xaccAccountSetCommoditySCU (Account *account, int frac);

/** Set the flag indicating that this account uses a non-standard SCU. */
void xaccAccountSetNonStdSCU (Account *account, gboolean flag);

/** Return boolean, indicating whether this account uses a
 *   non-standard SCU. */
gboolean  xaccAccountGetNonStdSCU (const Account *account);
/**@}*/


/** @name Account Balance
 @{
*/
/** Get the current balance of the account, which may include future
    splits */
gnc_numeric xaccAccountGetBalance (const Account *account);
/** Get the current balance of the account, only including cleared
    transactions */
gnc_numeric xaccAccountGetClearedBalance (const Account *account);
/** Get the current balance of the account, only including reconciled
    transactions */
gnc_numeric xaccAccountGetReconciledBalance (const Account *account);
gnc_numeric xaccAccountGetPresentBalance (const Account *account);
gnc_numeric xaccAccountGetProjectedMinimumBalance (const Account *account);
/** Get the balance of the account as of the date specified */
gnc_numeric xaccAccountGetBalanceAsOfDate (Account *account,
        time64 date);

/** Get the reconciled balance of the account as of the date specified */
gnc_numeric xaccAccountGetReconciledBalanceAsOfDate (Account *account, time64 date);

/* These two functions convert a given balance from one commodity to
   another.  The account argument is only used to get the Book, and
   may have nothing to do with the supplied balance.  Likewise, the
   date argument is only used for commodity conversion and may have
   nothing to do with supplied balance.

   Since they really have nothing to do with Accounts, there's
   probably some better place for them, but where?  gnc-commodity.h?
*/
gnc_numeric xaccAccountConvertBalanceToCurrency(
    const Account *account, /* for book */
    gnc_numeric balance,
    const gnc_commodity *balance_currency,
    const gnc_commodity *new_currency);
gnc_numeric xaccAccountConvertBalanceToCurrencyAsOfDate(
    const Account *account, /* for book */
    gnc_numeric balance, gnc_commodity *balance_currency,
    gnc_commodity *new_currency, time64 date);

/* These functions get some type of balance in the desired commodity.
   'report_commodity' may be NULL to use the account's commodity. */
gnc_numeric xaccAccountGetBalanceInCurrency (
    const Account *account, const gnc_commodity *report_commodity,
    gboolean include_children);
gnc_numeric xaccAccountGetClearedBalanceInCurrency (
    const Account *account, const gnc_commodity *report_commodity,
    gboolean include_children);
gnc_numeric xaccAccountGetReconciledBalanceInCurrency (
    const Account *account, const gnc_commodity *report_commodity,
    gboolean include_children);
gnc_numeric xaccAccountGetPresentBalanceInCurrency (
    const Account *account, const gnc_commodity *report_commodity,
    gboolean include_children);
gnc_numeric xaccAccountGetProjectedMinimumBalanceInCurrency (
    const Account *account, const gnc_commodity *report_commodity,
    gboolean include_children);

/* This function gets the balance as of the given date, ignoring
   closing entries, in the desired commodity. */
gnc_numeric xaccAccountGetNoclosingBalanceAsOfDateInCurrency(
    Account *acc, time64 date, gnc_commodity *report_commodity,
    gboolean include_children);
/* This function gets the balance as of the given date in the desired
   commodity. */
gnc_numeric xaccAccountGetBalanceAsOfDateInCurrency(
    Account *account, time64 date, gnc_commodity *report_commodity,
    gboolean include_children);

gnc_numeric xaccAccountGetNoclosingBalanceChangeForPeriod (
    Account *acc, time64 date1, time64 date2, gboolean recurse);
gnc_numeric xaccAccountGetBalanceChangeForPeriod (
    Account *acc, time64 date1, time64 date2, gboolean recurse);

/** @} */

/** @name Account Children and Parents.

 * The set of accounts is represented as a doubly-linked tree, so that given
 * any account, both its parent and its children can be easily found.
 * At the top of the tree hierarchy lies a single root node, the root account.
 *
 * The account tree hierarchy is unique, in that a given account can
 * have only one parent account.
 @{
*/

/** This function will remove from the child account any pre-existing
 *  parent relationship, and will then add the account as a child of
 *  the new parent.  The exception to this is when the old and new
 *  parent accounts are the same, in which case this function does
 *  nothing.
 *
 *  If the child account belongs to a different book than the
 *  specified new parent account, the child will be removed from the
 *  other book (and thus, the other book's entity tables, generating a
 *  destroy event), and will be added to the new book (generating a
 *  create event).
 *
 *  @param new_parent The new parent account to which the child should
 *  be attached.
 *
 *  @param child The account to attach.
 */
void gnc_account_append_child (Account *new_parent, Account *child);

/** This function will remove the specified child account from the
 *  specified parent account. It will NOT free the associated memory
 *  or otherwise alter the account: the account can now be reparented
 *  to a new location.  Note, however, that it will mark the old
 *  parents as having been modified.
 *
 *  @param parent The parent account from which the child should be
 *  removed.
 *
 *  @param child The child account to remove. */
void gnc_account_remove_child (Account *parent, Account *child);

/** This routine returns a pointer to the parent of the specified
 *  account.  If the account has no parent, i.e it is either the root
 *  node or is a disconnected account, then its parent will be NULL.
 *
 *  @param account A pointer to any exiting account.
 *
 *  @return A pointer to the parent account node, or NULL if there is
 *  no parent account. */
/*@ dependent @*/
Account * gnc_account_get_parent (const Account *account);

/** This routine returns the root account of the account tree that the
 *  specified account belongs to.  It is the equivalent of repeatedly
 *  calling the gnc_account_get_parent() routine until that routine
 *  returns NULL.
 *
 *  @param account A pointer to any existing account.
 *
 *  @return The root node of the account tree to which this account
 *  belongs.  NULL if the account is not part of any account tree. */
Account * gnc_account_get_root (Account *account);

/** This routine indicates whether the specified account is the root
 *  node of an account tree.
 *
 *  @param account A pointer to any account.
 *
 *  @return TRUE if this account is of type ROOT.  FALSE otherwise. */
gboolean gnc_account_is_root (const Account *account);

/** This routine returns a GList of all children accounts of the specified
 *  account.  This function only returns the immediate children of the
 *  specified account.  For a list of all descendant accounts, use the
 *  gnc_account_get_descendants() function.
 *
 *  If you are looking for the splits of this account, use
 *  xaccAccountGetSplitList() instead. This function here deals with
 *  children accounts inside the account tree.
 *
 *  @param account The account whose children should be returned.
 *
 *  @return A GList of account pointers, or NULL if there are no
 *  children accounts. It is the callers responsibility to free any returned
 *  list with the g_list_free() function. */
GList *gnc_account_get_children (const Account *account);

/** This routine returns a GList of all children accounts of the specified
 *  account, ordered by xaccAccountOrder().  \sa gnc_account_get_children()
 */
GList *gnc_account_get_children_sorted (const Account *account);

/** Return the number of children of the specified account.  The
 *  returned number does not include the account itself.
 *
 *  @param account The account to query.
 *
 *  @return The number of children of the specified account. */
gint gnc_account_n_children (const Account *account);

/** Return the index of the specified child within the list of the
 *  parent's children.  The first child index is 0.  This function
 *  returns -1 if the parent account is NULL of if the specified child
 *  does not belong to the parent account.
 *
 *  @param parent The parent account to check.
 *
 *  @param child The child account to find.
 *
 *  @return The index of the child account within the specified
 *  parent, or -1. */
gint gnc_account_child_index (const Account *parent, const Account *child);

/** Return the n'th child account of the specified parent account.  If
 *  the parent account is not specified or the child index number is
 *  invalid, this function returns NULL.
 *
 *  @param parent The parent account to check.
 *
 *  @param num The index number of the child account that should be
 *  returned.
 *
 *  @return A pointer to the specified child account, or NULL */
Account *gnc_account_nth_child (const Account *parent, gint num);

/** This routine returns a flat list of all of the accounts that are
 *  descendants of the specified account.  This includes not only the
 *  the children, but the children of the children, etc. For a list of
 *  only the immediate child accounts, use the
 *  gnc_account_get_children() function.  Within each set of child
 *  accounts, the accounts returned by this function are unordered.
 *  For a list of descendants where each set of children is sorted via
 *  the standard account sort function, use the
 *  gnc_account_get_descendants_sorted() function.
 *
 *  @param account The account whose descendants should be returned.
 *
 *  @return A GList of account pointers, or NULL if there are no
 *  descendants. It is the callers responsibility to free any returned
 *  list with the g_list_free() function. */
GList * gnc_account_get_descendants (const Account *account);

/** This function returns a GList containing all the descendants of
 *  the specified account, sorted at each level.  This includes not
 *  only the the children, but the children of the children, etc.
 *  Within each set of child accounts, the accounts returned by this
 *  function are ordered via the standard account sort function.  For
 *  a list of descendants where each set of children is unordered, use
 *  the gnc_account_get_descendants() function.
 *
 *  Note: Use this function where the results are intended for display
 *  to the user.  If the results are internal to GnuCash or will be
 *  resorted at som later point in time you should use the
 *  gnc_account_get_descendants() function.
 *
 *  @param account The account whose descendants should be returned.
 *
 *  @return A GList of account pointers, or NULL if there are no
 *  descendants. It is the callers responsibility to free any returned
 *  list with the g_list_free() function. */
GList *gnc_account_get_descendants_sorted (const Account *account);

/** Return the number of descendants of the specified account.  The
 *  returned number does not include the account itself.
 *
 *  @param account The account to query.
 *
 *  @return The number of descendants of the specified account. */
gint gnc_account_n_descendants (const Account *account);

/** Return the number of levels of this account below the root
 *  account.
 *
 *  @param account The account to query.
 *
 *  @return The number of levels below the root. */
gint gnc_account_get_current_depth (const Account *account);

/** Return the number of levels of descendants accounts below the
 *  specified account.  The returned number does not include the
 *  specified account itself.
 *
 *  @param account The account to query.
 *
 *  @return The number of levels of descendants. */
gint gnc_account_get_tree_depth (const Account *account);

/** @name ForEach
 @{
*/

/** This method will traverse the immediate children of this accounts,
 *  calling 'func' on each account.  This function traverses all
 *  children nodes.  To traverse only a subset of the child nodes use
 *  the gnc_account_foreach_child_until() function.
 *
 *  @param account A pointer to the account on whose children the
 *  function should be called.
 *
 *  @param func A function taking two arguments, an Account and a
 *  gpointer.
 *
 *  @param user_data This data will be passed to each call of func. */
void gnc_account_foreach_child (const Account *account,
                                AccountCb func, /*@ null @*/ gpointer user_data);

/** This method will traverse all children of this accounts and their
 *  descendants, calling 'func' on each account.  This function
 *  traverses all descendant nodes.  To traverse only a subset of the
 *  descendant nodes use the gnc_account_foreach_descendant_until()
 *  function.
 *
 *  @param account A pointer to the account on whose descendants the
 *  function should be called.
 *
 *  @param func A function taking two arguments, an Account and a
 *  gpointer.
 *
 *  @param user_data This data will be passed to each call of func. */
void gnc_account_foreach_descendant (const Account *account,
                                     AccountCb func, /*@ null @*/ gpointer user_data);

/** This method will traverse all children of this accounts and their
 *  descendants, calling 'func' on each account.  Traversal will stop
 *  when func returns a non-null value, and the routine will return
 *  with that value.  Therefore, this function will return null if
 *  func returns null for every account.  For a simpler function that
 *  always traverses all children nodes, use the
 *  gnc_account_foreach_descendant() function.
 *
 *  @param account A pointer to the account on whose descendants the
 *  function should be called.
 *
 *  @param func A function taking two arguments, an Account and a
 *  gpointer.
 *
 *  @param user_data This data will be passed to each call of func. */
gpointer gnc_account_foreach_descendant_until (const Account *account,
        AccountCb2 func, /*@ null @*/ gpointer user_data);


/** @} */

/** @name Concatenation, Merging
 @{
*/

/** The gnc_account_join_children() subroutine will move (reparent)
 *  all child accounts from the from_parent account to the to_parent
 *  account, preserving the account hierarchy.  It will also take care
 *  that the moved accounts will have the to_parent's book parent
 *  as well.
 */
void gnc_account_join_children (Account *to_parent, Account *from_parent);

/** The gnc_account_merge_children() subroutine will go through an
 *  account, merging all child accounts that have the same name and
 *  description.  This function is useful when importing Quicken(TM)
 *  files.
 */
void gnc_account_merge_children (Account *parent);

/** @} */

/** DOCUMENT ME! */
void xaccAccountSetReconcileChildrenStatus(Account *account, gboolean status);

/** DOCUMENT ME! */
gboolean xaccAccountGetReconcileChildrenStatus(const Account *account);

/** Returns true if the account is 'ancestor' or has 'ancestor' as an
 *  ancestor.  An ancestor account may be the accounts parent, its
 *  parent's parent, its parent's parent's parent, etc.  Returns false
 *  if either one is NULL.
 */
gboolean xaccAccountHasAncestor(const Account *acc, const Account *ancestor);

/** @} */

/** @name Lookup Accounts and Subaccounts by name or code
 @{
*/
/** The gnc_account_lookup_by_name() subroutine fetches the account by
 *  name from the descendants of the specified account.  The immediate
 *  children are searched first.  If there is no match,, then a
 *  recursive search of all descendants is performed looking for a
 *  match.
 *
 *  @return A pointer to the account with the specified name, or NULL
 *  if the account was not found.
 */
Account *gnc_account_lookup_by_name (const Account *parent, const char *name);

/** The gnc_account_lookup_full_name() subroutine works like
 *  gnc_account_lookup_by_name, but uses fully-qualified names using the
 *  given separator.
 */
Account *gnc_account_lookup_by_full_name (const Account *any_account,
        const gchar *name);

/** The gnc_account_lookup_by_code() subroutine works like
 *  gnc_account_lookup_by_name, but uses the account code.
 */
Account *gnc_account_lookup_by_code (const Account *parent,
                                     const char *code);

/** Find the opening balance account for the currency.
 *
 *  @param account The account of which the sought-for account is a descendant.
 *  @param commodity The commodity in which the account should be denominated
 *  @return The descendant account of EQUITY_TYPE_OPENING_BALANCE or NULL if one doesn't exist.
 */
Account *gnc_account_lookup_by_opening_balance (Account *account, gnc_commodity *commodity);

/** @} */

/* ------------------ */

/** @name GNCAccountType conversion/checking
 @{
*/
/**
 * Conversion routines for the account types to/from strings
 * that are used in persistent storage, communications.  These
 * strings should *not* be translated to the local language.
 * Typical conversion is ACCT_TYPE_INCOME -> "INCOME". */
const char * xaccAccountTypeEnumAsString (GNCAccountType type);
/**
 * Conversion routines for the account types to/from strings
 * that are used in persistent storage, communications.  These
 * strings should *not* be translated to the local language.
 * Typical conversion is "INCOME" -> ACCT_TYPE_INCOME. */
gboolean xaccAccountStringToType (const char* str, GNCAccountType *type);
/**
 * Conversion routines for the account types to/from strings
 * that are used in persistent storage, communications.  These
 * strings should *not* be translated to the local language.
 * Typical conversion is "INCOME" -> ACCT_TYPE_INCOME. */
GNCAccountType xaccAccountStringToEnum (const char* str);

/** The xaccAccountGetTypeStr() routine returns a string suitable for
 *  use in the GUI/Interface.  These strings should be translated
 *  to the local language. */
const char * xaccAccountGetTypeStr (GNCAccountType type);

/** Return the bitmask of account types compatible with a given type.
 *  That is, you could switch to any of the account types in the compatible
 *  list without unwanted side-effects. */
guint32 xaccAccountTypesCompatibleWith (GNCAccountType type);

/** Return the bitmask of parent account types compatible with a given type. */
guint32 xaccParentAccountTypesCompatibleWith (GNCAccountType type);

/** Return TRUE if accounts of type parent_type can have accounts
 * of type child_type as children. */
gboolean xaccAccountTypesCompatible (GNCAccountType parent_type,
                                     GNCAccountType child_type);

/** Returns the bitmask of the account type enums that are valid.  Deprecated and
 *  root account types are stripped. */
guint32 xaccAccountTypesValid(void);

/** Convenience function to check if the account is a valid
 *  Asset or Liability type, but not a business account type
 *  (meaning not an Accounts Payable/Accounts Receivable). */
gboolean xaccAccountIsAssetLiabType(GNCAccountType t);

/** Convenience function to return the fundamental type
 * asset/liability/income/expense/equity given an account type. */
GNCAccountType xaccAccountTypeGetFundamental (GNCAccountType t);


/** Convenience function to check if the account is a valid
 *  business account type
 *  (meaning an Accounts Payable/Accounts Receivable). */
gboolean xaccAccountIsAPARType(GNCAccountType t);

/** Convenience function to check if the account is a valid
 *  Equity type. */
gboolean xaccAccountIsEquityType(GNCAccountType t);


/** @} */

/* ------------------ */

/** @name Account split/transaction list management
@{
*/
/** The xaccAccountInsertSplit() method will insert the indicated
 *    split into the indicated account.  If the split already
 *    belongs to another account, it will be removed from that
 *    account first.*/
#define xaccAccountInsertSplit(acc, s)  xaccSplitSetAccount((s), (acc))

/** The xaccAccountGetSplitList() routine returns a pointer to a GList of
 *    the splits in the account.
 * @note This GList is the account's internal
 *    data structure: do not delete it when done; treat it as a read-only
 *    structure.  Note that some routines (such as xaccAccountRemoveSplit())
 *    modify this list directly, and could leave you with a corrupted
 *    pointer.
 * @note This should be changed so that the returned value is a copy
 * of the list. No other part of the code should have access to the
 * internal data structure used by this object.
 */
SplitList* xaccAccountGetSplitList (const Account *account);


/** The xaccAccountCountSplits() routine returns the number of all
 *    the splits in the account. xaccAccountCountSplits is O(N). if
 *    testing for emptiness, use xaccAccountGetSplitList != NULL.

 * @param acc the account for which to count the splits
 *
 * @param include_children also count splits in descendants (TRUE) or
 *        for this account only (FALSE).
 */
gint64 xaccAccountCountSplits (const Account *acc, gboolean include_children);

/** The xaccAccountMoveAllSplits() routine reassigns each of the splits
 *  in accfrom to accto. */
void xaccAccountMoveAllSplits (Account *accfrom, Account *accto);

/** The xaccAccountForEachTransaction() routine will traverse all of
 * the transactions in @a account and call the callback
 * function @a proc on each transaction.  Processing will continue
 * if-and-only-if @a proc returns 0. The user data pointer
 * @a data will be passed on to the callback function @a proc.
 *
 * This function does not descend recursively to traverse transactions
 * in child accounts.
 *
 * @a proc will be called exactly once for each transaction that is
 * pointed to by at least one split in the given account.
 *
 * The result of this function will be 0 <em>if and only if</em>
 * every relevant transaction was traversed exactly once.
 * Else the return value is the last non-zero value returned by proc.
 *
 * \warning For performance reasons, the transaction callback @a proc
 * must never destroy any of the transaction's splits, nor assign any
 * of them to a different account. <b>To do so risks a crash.</b>
 *
 * \warning The traversal occurs only over the transactions that
 * are locally cached in the local gnucash engine.  If the gnucash
 * engine is attached to a remote database, the database may contain
 * (many) transactions that are not mirrored in the local cache.
 * This routine will not cause an SQL database query to be performed;
 * it will not traverse transactions present only in the remote
 * database.
 */
gint xaccAccountForEachTransaction(const Account *account,
                                   TransactionCallback proc,
                                   void *data);

/** Returns a pointer to the transaction, not a copy. */
Transaction * xaccAccountFindTransByDesc(const Account *account,
        const char *description);

/** Returns a pointer to the split, not a copy. */
Split * xaccAccountFindSplitByDesc(const Account *account,
                                   const char *description);

/** @} */

/* ------------------ */

/** @name Account lots
@{
*/
/** The xaccAccountInsertLot() method will register the indicated lot
 *    with this account.   Any splits later inserted into this lot must
 *    belong to this account.  If the lot is already in another account,
 *    the lot, and all of the splits in it, will be moved from that
 *    account to this account. */
void xaccAccountInsertLot (Account *, GNCLot *);
void xaccAccountRemoveLot (Account *, GNCLot *);

/** The xaccAccountGetLotList() routine returns a list of all lots in
 *  this account.
 *
 *  @param account The account whose lots should be returned.
 *
 *  @return A GList of lot pointers, or NULL if there are no lots in
 *  this account children. It is the callers responsibility to free
 *  any returned list with the g_list_free() function. */
LotList* xaccAccountGetLotList (const Account *account);

/** The xaccAccountForEachLot() method will apply the function 'proc'
 *    to each lot in the account.  If 'proc' returns a non-NULL value,
 *    further application will be stopped, and the resulting value
 *    will be returned.  There is no guaranteed order over which
 *    the Lots will be traversed.
 */
gpointer xaccAccountForEachLot(
    const Account *acc,
    gpointer (*proc)(GNCLot *lot, gpointer user_data), /*@ null @*/ gpointer user_data);


/** Find a list of open lots that match the match_func.  Sort according
 * to sort_func.  If match_func is NULL, then all open lots are returned.
 * If sort_func is NULL, then the returned list has no particular order.
 * The caller must free to returned list.
 */
LotList * xaccAccountFindOpenLots (const Account *acc,
                                   gboolean (*match_func)(GNCLot *lot,
                                           gpointer user_data),
                                   /*@ null @*/ gpointer user_data, GCompareFunc sort_func);

/** @} */
/* ------------------ */

/** @name Account Reconciliation information getters/setters
@{
*/
/** DOCUMENT ME! */
gboolean xaccAccountGetReconcileLastDate (const Account *account,
        time64 *last_date);
/** DOCUMENT ME! */
void xaccAccountSetReconcileLastDate (Account *account, time64 last_date);

/** DOCUMENT ME! */
gboolean xaccAccountGetReconcileLastInterval (const Account *account,
        int *months, int *days);
/** DOCUMENT ME! */
void xaccAccountSetReconcileLastInterval (Account *account,
        int months, int days);
/** DOCUMENT ME! */
gboolean xaccAccountGetReconcilePostponeDate (const Account *account,
        time64 *postpone_date);
/** DOCUMENT ME! */
void xaccAccountSetReconcilePostponeDate (Account *account,
        time64 postpone_date);

/** DOCUMENT ME! */
gboolean xaccAccountGetReconcilePostponeBalance (const Account *account,
        gnc_numeric *balance);
/** DOCUMENT ME! */
void xaccAccountSetReconcilePostponeBalance (Account *account,
        gnc_numeric balance);

/** DOCUMENT ME! */
void xaccAccountClearReconcilePostpone (Account *account);
/** @} */


/** DOCUMENT ME! */
typedef enum
{
    PLACEHOLDER_NONE,
    PLACEHOLDER_THIS,
    PLACEHOLDER_CHILD,
} GNCPlaceholderType;

/** @name Account Placeholder flag
 @{
*/

/** Get the "placeholder" flag for an account.  If this flag is set
 *  then the account may not be modified by the user.
 *
 *  @param account The account whose flag should be retrieved.
 *
 *  @return The current state of the account's "placeholder" flag. */
gboolean xaccAccountGetPlaceholder (const Account *account);

/** Set the "placeholder" flag for an account.  If this flag is set
 *  then the account may not be modified by the user.
 *
 *  @param account The account whose flag should be retrieved.
 *
 *  @param val The new state for the account's "placeholder" flag. */
void xaccAccountSetPlaceholder (Account *account, gboolean val);

/** Get the "opening-balance" flag for an account.  If this flag is set
 *  then the account is used for opening balance transactions.
 *
 *  @param account The account whose flag should be retrieved.
 *
 *  @return The current state of the account's "opening-balance" flag. */
gboolean xaccAccountGetIsOpeningBalance (const Account *account);

/** Set the "opening-balance" flag for an account. If this flag is set
 *  then the account is used for opening balance transactions.
 *
 *  @param account The account whose flag should be set.
 *
 *  @param val The new state for the account's "opening-balance" flag. */
void xaccAccountSetIsOpeningBalance (Account *account, gboolean val);

/** Returns PLACEHOLDER_NONE if account is NULL or neither account nor
 *  any descendant of account is a placeholder.  If account is a
 *  placeholder, returns PLACEHOLDER_THIS.  Otherwise, if any
 *  descendant of account is a placeholder, return PLACEHOLDER_CHILD.
 */
GNCPlaceholderType xaccAccountGetDescendantPlaceholder(const Account *account);
/** @} */

/** @name Account Hidden flag
 @{
*/

/** Get the "hidden" flag for an account.  If this flag is set then
 *  the account (and any children) will be hidden from the user unless
 *  they explicitly ask to see them.
 *
 *  @param acc The account whose flag should be retrieved.
 *
 *  @return The current state of the account's "hidden" flag. */
gboolean xaccAccountGetHidden (const Account *acc);

/** Set the "hidden" flag for an account.  If this flag is set then
 *  the account (and any children) will be hidden from the user unless
 *  they explicitly ask to see them.
 *
 *  @param acc The account whose flag should be retrieved.
 *
 *  @param val The new state for the account's "hidden" flag. */
void xaccAccountSetHidden (Account *acc, gboolean val);

/** Should this account be "hidden".  If this flag is set for this
 *  account (or any parent account) then the account should be hidden
 *  from the user unless they explicitly ask to see it.  This function
 *  is different from the xaccAccountGetHidden() function because it
 *  checks the flag in parent accounts in addition to this account.
 *
 *  @param acc The account whose flag should be retrieved.
 *
 *  @return Whether or not this account should be "hidden". */
gboolean xaccAccountIsHidden (const Account *acc);
/** @} */

/** @name Account Auto Interest flag
 @{
 */

/** Get the "auto interest" flag for an account.  If this flag is set then
 *  the account (and any children) will trigger an interest transfer after reconciling.
 *
 *  @param acc The account whose flag should be retrieved.
 *
 *  @return The current state of the account's "auto interest" flag. */
gboolean xaccAccountGetAutoInterest (const Account *acc);

/** Set the "auto interest" flag for an account.  If this flag is set then
 *  the account (and any children) will trigger an interest transfer after reconciling.
 *
 *  @param acc The account whose flag should be retrieved.
 *
 *  @param val The new state for the account's "auto interest" flag. */
void xaccAccountSetAutoInterest (Account *acc, gboolean val);

/** @} */


/** @name Account Tax related getters/setters
 @{
*/

/** DOCUMENT ME! */
gboolean xaccAccountGetTaxRelated (const Account *account);
/** DOCUMENT ME! */
void xaccAccountSetTaxRelated (Account *account, gboolean tax_related);
/** DOCUMENT ME! */
const char * xaccAccountGetTaxUSCode (const Account *account);
/** DOCUMENT ME! */
void xaccAccountSetTaxUSCode (Account *account, const char *code);
/** DOCUMENT ME! */
const char * xaccAccountGetTaxUSPayerNameSource (const Account *account);
/** DOCUMENT ME! */
void xaccAccountSetTaxUSPayerNameSource (Account *account, const char *source);
/** DOCUMENT ME! */
gint64 xaccAccountGetTaxUSCopyNumber (const Account *account);
/** DOCUMENT ME! */
void xaccAccountSetTaxUSCopyNumber (Account *account, gint64 copy_number);
/** @} */

/** @name Account type debit/credit string getters
 @ {      *
 */

/** Get the debit string associated with this account type */
const char *gnc_account_get_debit_string (GNCAccountType acct_type);
/** Get the credit string associated with this account type */
const char *gnc_account_get_credit_string (GNCAccountType acct_type);

/** @} */


/** @name Account marking
@{
*/
/** Set a mark on the account.  The meaning of this mark is
 * completely undefined. Its presented here as a utility for the
 * programmer, to use as desired.  Handy for performing customer traversals
 * over the account tree.  The mark is *not* stored in the database/file
 * format.  When accounts are newly created, the mark is set to zero.
 */
void xaccAccountSetMark (Account *account, short mark);

/** Get the mark set by xaccAccountSetMark
short xaccAccountGetMark (const Account *account);
*/
/** The xaccClearMark will find the root account, and clear the mark in
 * the entire account tree.  */
void xaccClearMark (Account *account, short val);

/** The xaccClearMarkDown will clear the mark only in this and in
 * sub-accounts.*/
void xaccClearMarkDown (Account *account, short val);
/** @} */

/** @name Staged Traversal

 * The following functions provide support for "staged traversals"
 * over all of the transactions in an account or group.  The idea
 * is to be able to perform a sequence of traversals ("stages"),
 * and perform an operation on each transaction exactly once
 * for that stage.
 *
 * Only transactions whose current "stage" is less than the
 * stage of the current traversal will be affected, and they will
 * be "brought up" to the current stage when they are processed.
 *
 * For example, you could perform a stage 1 traversal of all the
 * transactions in an account, and then perform a stage 1 traversal of
 * the transactions in a second account.  Presuming the traversal of
 * the first account didn't abort prematurely, any transactions shared
 * by both accounts would be ignored during the traversal of the
 * second account since they had been processed while traversing the
 * first account.
 *
 * However, if you had traversed the second account using a stage
 * of 2, then all the transactions in the second account would have
 * been processed.
 *
 * Traversal can be aborted by having the callback function return
 * a non-zero value.  The traversal is aborted immediately, and the
 * non-zero value is returned.  Note that an aborted traversal can
 * be restarted; no information is lost due to an abort.
 *
 * The initial impetus for this particular approach came from
 * generalizing a mark/sweep practice that was already being
 * used in FileIO.c.
 *
 * Note that currently, there is a hard limit of 256 stages, which
 * can be changed by enlarging "marker" in the transaction struct.
 *
 @{
*/
/** gnc_account_tree_begin_staged_transaction_traversals()
 *  resets the traversal marker inside every transactions of every
 *  account in the account tree originating with the specified node.
 *  This is done so that a new sequence of staged traversals can
 *  begin.
 */
void gnc_account_tree_begin_staged_transaction_traversals(Account *acc);

/** xaccSplitsBeginStagedTransactionTraversals() resets the traversal
 *    marker for each transaction which is a parent of one of the
 *    splits in the list.
 */
void xaccSplitsBeginStagedTransactionTraversals(SplitList *splits);

/** xaccAccountBeginStagedTransactionTraversals() resets the traversal
 *    marker for each transaction which is a parent of one of the
 *    splits in the account.
 */
void xaccAccountBeginStagedTransactionTraversals(const Account *account);

/** xaccTransactionTraverse() checks the stage of the given transaction.
 *    If the transaction hasn't reached the given stage, the transaction
 *    is updated to that stage and the function returns TRUE. Otherwise
 *    no change is made and the function returns FALSE.
 */
gboolean xaccTransactionTraverse(Transaction *trans, int stage);

/** xaccAccountStagedTransactionTraversal() calls @a thunk on each
 *    transaction in account @a a whose current marker is less than the
 *    given @a stage and updates each transaction's marker to be @a stage.
 *    The traversal will stop if @a thunk returns a non-zero value.
 *    xaccAccountStagedTransactionTraversal() function will return zero
 *    or the non-zero value returned by @a thunk.
 *    This API does not handle handle recursive traversals.
 *
 *    \warning For performance reasons, the transaction callback @a thunk
 *    must never destroy any of the transaction's splits, nor assign any
 *    of them to a different account. <b>To do so risks a crash.</b>
 */

int xaccAccountStagedTransactionTraversal(const Account *a,
        unsigned int stage,
        TransactionCallback thunk,
        void *data);

/** gnc_account_tree_staged_transaction_traversal() calls @a thunk on each
 *    transaction in the group whose current marker is less than the
 *    given @a stage and updates each transaction's marker to be @a stage.
 *    The traversal will stop if @a thunk returns a non-zero value.
 *    gnc_account_tree_staged_transaction_traversal() function will return zero
 *    or the non-zero value returned by @a thunk.  This
 *    API does not handle handle recursive traversals.
 *
 *    \warning For performance reasons, the transaction callback @a thunk
 *    must never destroy any of the transaction's splits, nor assign any
 *    of them to a different account. <b>To do so risks a crash.</b>
 */

int gnc_account_tree_staged_transaction_traversal(const Account *account,
        unsigned int stage,
        TransactionCallback thunk,
        void *data);

/** Traverse all of the transactions in the given account group.
 * Continue processing IF @a proc returns 0. This function
 * will descend recursively to traverse transactions in the
 * children of the accounts in the group.
 *
 * @a Proc will be called exactly once for each transaction that is
 * pointed to by at least one split in any account in the hierarchy
 * topped by the root Account @a acc.
 *
 * The result of this function will be 0 IF every relevant
 * transaction was traversed exactly once; otherwise, the return
 * value is the last non-zero value returned by the callback.
 *
 * \warning For performance reasons, the transaction callback @a proc
 * must never destroy any of the transaction's splits, nor assign any
 * of them to a different account. <b>To do so risks a crash.</b>
 *
 * \warning The traversal occurs only over the transactions that
 * are locally cached in the local gnucash engine.  If the gnucash
 * engine is attached to a remote database, the database may contain
 * (many) transactions that are not mirrored in the local cache.
 * This routine will not cause an SQL database query to be performed;
 * it will not traverse transactions present only in the remote
 * database.
 *
 * Note that this routine is just a trivial wrapper for
 *
 * gnc_account_tree_begin_staged_transaction_traversals(g);
 * gnc_account_tree_staged_transaction_traversal(g, 42, proc, data);
 */

int xaccAccountTreeForEachTransaction(Account *acc,
                                      TransactionCallback proc, void *data);

/** Obtain an ImportMatchMap object from an Account or a Book
 */
GncImportMatchMap *gnc_account_imap_create_imap (Account *acc);

/* Look up an Account in the map non Baysian
 */
Account* gnc_account_imap_find_account (GncImportMatchMap *imap, const char* category,
                                        const char *key);

/* Store an Account in the map non Baysian
 */
void gnc_account_imap_add_account (GncImportMatchMap *imap, const char *category,
                                   const char *key, Account *acc);

/* Remove a reference to an Account in the map non Baysian
 */
void gnc_account_imap_delete_account (GncImportMatchMap *imap, const char *category,
                                      const char *key);

/** Look up an Account in the map using Baysian
 */
Account* gnc_account_imap_find_account_bayes (GncImportMatchMap *imap, GList* tokens);

/** Updates the imap for a given account using a list of tokens
 */
void gnc_account_imap_add_account_bayes (GncImportMatchMap *imap, GList* tokens,
                                         Account *acc);

typedef struct imap_info
{
    Account        *source_account;
    Account        *map_account;
    GList          *list;
    char           *head;
    char           *category;
    char           *match_string;
    char           *count;
}GncImapInfo;

/** Returns a GList of structure imap_info of all Bayesian mappings for
 *  required Account
 */
GList *gnc_account_imap_get_info_bayes (Account *acc);

/** Returns a GList of structure imap_info of all Non Bayesian mappings for
 *  required Account
 */
GList *gnc_account_imap_get_info (Account *acc, const char *category);

/** Returns the text string pointed to by head and category for the Account, free
 *  the returned text
 */
gchar *gnc_account_get_map_entry (Account *acc, const char *head, const char *category);

/** Delete the entry for Account pointed to by head,category and match_string,
 *  if empty is TRUE then use delete if empty
 */
void gnc_account_delete_map_entry (Account *acc, char *head, char *category,
                                   char *match_string, gboolean empty);

/** Delete all bayes entries for Account
 */
void gnc_account_delete_all_bayes_maps (Account *acc);

/** Reset the flag that indicates the function imap_convert_bayes_to_flat
 *  has been run
 */
void gnc_account_reset_convert_bayes_to_flat (void);

/** @} */


/** @name Deprecated Routines.
 @{
*/

/** @deprecated The current API associates only one thing with an
 * account: the 'commodity'. Use xaccAccountGetCommodity() to fetch
 * it.
 *
 * These two funcs take control of their gnc_commodity args. Don't free */
void DxaccAccountSetCurrency (Account *account, gnc_commodity *currency);

/** @deprecated The current API associates only one thing with an
 * account: the 'commodity'. Use xaccAccountGetCommodity() to fetch
 * it. */
gnc_commodity * DxaccAccountGetCurrency (const Account *account);

/** Set the timezone to be used when interpreting the results from a
 *  given Finance::Quote backend.  Unfortunately, the upstream sources
 *  don't label their output, so the user has to specify this bit.
 *
 *  @deprecated Price quote information is now stored on the
 *  commodity, not the account. */

void dxaccAccountSetQuoteTZ (Account *account, const char *tz);
/** Get the timezone to be used when interpreting the results from a
 *  given Finance::Quote backend.  Unfortunately, the upstream sources
 *  don't label their output, so the user has to specify this bit.
 *
 *  @deprecated Price quote information is now stored on the
 *  commodity, not the account. */
const char * dxaccAccountGetQuoteTZ (const Account *account);
/** @} */


/** @name Account parameter names
 @{
*/
#define ACCOUNT_KVP		"kvp"
#define ACCOUNT_NAME_		"name"
#define ACCOUNT_CODE_		"code"
#define ACCOUNT_DESCRIPTION_	"desc"
#define ACCOUNT_COLOR_		"color"
#define ACCOUNT_FILTER_		"filter"
#define ACCOUNT_SORT_ORDER_	"sort-order"
#define ACCOUNT_SORT_REVERSED_ "sort-reversed"
#define ACCOUNT_NOTES_		"notes"
#define ACCOUNT_BALANCE_	"balance"
#define ACCOUNT_NOCLOSING_	"noclosing"
#define ACCOUNT_OPENING_BALANCE_ "opening-balance"
#define ACCOUNT_CLEARED_	"cleared"
#define ACCOUNT_RECONCILED_	"reconciled"
#define ACCOUNT_PRESENT_	"present"
#define ACCOUNT_FUTURE_MINIMUM_ "future-minimum"
#define ACCOUNT_TAX_RELATED	"tax-related-p"
#define ACCOUNT_TYPE_		"account-type"
#define ACCOUNT_SCU		"smallest-commodity-unit"
#define ACCOUNT_NSCU		"non-standard-scu"
#define ACCOUNT_PARENT		"parent-account"

/** @} */

/** This is the type-override when you want to match all accounts.  Used
 * in the gnome-search parameter list.  Be careful when you use this. */
#define ACCOUNT_MATCH_ALL_TYPE	"account-match-all"

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

#endif /* XACC_ACCOUNT_H */
/** @} */
/** @} */
