/******************************************************************************
 * $Id$
 *
 * Copyright (c) 2007-2008 Transmission authors and contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *****************************************************************************/

#ifndef TR_CORE_H
#define TR_CORE_H

#include <string.h>

#include <glib-object.h>
#include <gtk/gtk.h>

#include <libtransmission/transmission.h>
#include "conf.h" /* pref_flag_t */
#include "tr-torrent.h"

#define TR_CORE_TYPE (tr_core_get_type())
#define TR_CORE(o) G_TYPE_CHECK_INSTANCE_CAST((o),TR_CORE_TYPE,TrCore)
#define TR_IS_CORE(o) G_TYPE_CHECK_INSTANCE_TYPE((o),TR_CORE_TYPE)
#define TR_CORE_CLASS(k) G_TYPE_CHECK_CLASS_CAST((k),TR_CORE_TYPE,TrCoreClass)
#define TR_IS_CORE_CLASS(k) G_TYPE_CHECK_CLASS_TYPE((k),TR_CORE_TYPE)
#define TR_CORE_GET_CLASS(o) G_TYPE_INSTANCE_GET_CLASS((o),TR_CORE_TYPE,TrCoreClass)

struct core_stats
{
    int downloadCount;
    int seedingCount;
    float clientDownloadSpeed;
    float clientUploadSpeed;
};

typedef struct TrCore
{
    GObject                 parent;
    struct TrCorePrivate  * priv;
}
TrCore;

typedef struct TrCoreClass
{
    GObjectClass parent;

    /* "blocklist" signal:
       void  handler( TrCore *, const char *, gpointer userData ); */
    int blocksig;

    /* "error" signal:
       void handler( TrCore *, enum tr_core_err, const char *, gpointer ) */
    int errsig;

    /* "add-torrent-prompt" signal:
       void handler( TrCore *, gpointer ctor, gpointer userData )
       The handler assumes ownership of ctor and must free when done */
    int promptsig;

    /* "quit" signal:
       void handler( TrCore *, gpointer ) */
    int quitsig;

    /* "prefs-changed" signal:
       void handler( TrCore *, int, gpointer ) */
    int prefsig;
}
TrCoreClass;

enum tr_core_err
{
    TR_CORE_ERR_ADD_TORRENT_ERR  = TR_EINVALID,
    TR_CORE_ERR_ADD_TORRENT_DUP  = TR_EDUPLICATE,
    TR_CORE_ERR_NO_MORE_TORRENTS,  /* finished adding a batch */
    TR_CORE_ERR_SAVE_STATE         /* error saving state */
};

GType tr_core_get_type( void );

TrCore * tr_core_new( tr_handle * );

void tr_core_close( TrCore* );

/* Return the model used without incrementing the reference count */
GtkTreeModel * tr_core_model( TrCore * self );

tr_handle * tr_core_handle( TrCore * self );

void tr_core_get_stats( const TrCore      * core, 
                        struct core_stats * setme );

/******
*******
******/

/**
 * Load saved state and return number of torrents added.
 * May trigger one or more "error" signals with TR_CORE_ERR_ADD_TORRENT
 */
int tr_core_load( TrCore * self, gboolean forcepaused );

/**
 * Add a list of torrents.
 * This function assumes ownership of torrentFiles
 *
 * May pop up dialogs for each torrent if that preference is enabled.
 * May trigger one or more "error" signals with TR_CORE_ERR_ADD_TORRENT
 */
void tr_core_add_list( TrCore      * self,
                       GSList      * torrentFiles,
                       pref_flag_t   start,
                       pref_flag_t   prompt );

#define tr_core_add_list_defaults(c,l) \
        tr_core_add_list(c,l,PREF_FLAG_DEFAULT,PREF_FLAG_DEFAULT)


/** Add a torrent. */
gboolean tr_core_add_file( TrCore*, const char * filename, gboolean * setme_success, GError ** err );

/** Present the main window */
gboolean tr_core_present_window( TrCore*, gboolean * setme_success, GError ** err );

/** Add a torrent. */
void tr_core_add_torrent( TrCore*, TrTorrent* );

/**
 * Notifies listeners that torrents have been added.
 * This should be called after one or more tr_core_add*() calls.
 */
void tr_core_torrents_added( TrCore * self );

/******
*******
******/

/* we've gotten notice from RPC that a torrent has been destroyed;
   update our gui accordingly */
void tr_core_torrent_destroyed( TrCore * self, int id );

/* remove a torrent */
void tr_core_remove_torrent( TrCore * self, TrTorrent * gtor, int deleteFiles );

/* update the model with current torrent status */
void tr_core_update( TrCore * self );

/* emit the "quit" signal */
void tr_core_quit( TrCore * self );

/* emit the "blocklist changed" signal */
void tr_core_blocksig( TrCore * core, gboolean isDone, const char * status );

/* Set a preference value, save the prefs file, and emit the
   "prefs-changed" signal */
void tr_core_set_pref( TrCore * self, const char * key, const char * val );

/* Set a boolean preference value, save the prefs file, and emit the
   "prefs-changed" signal */
void tr_core_set_pref_bool( TrCore * self, const char * key, gboolean val );

/* Set an integer preference value, save the prefs file, and emit the
   "prefs-changed" signal */
void tr_core_set_pref_int( TrCore * self, const char * key, int val );


/**
***
**/

/* column names for the model used to store torrent information */
/* keep this in sync with the type array in tr_core_init() in tr_core.c */
enum
{
    MC_NAME,
    MC_NAME_COLLATED,
    MC_TORRENT,
    MC_TORRENT_RAW,
    MC_STATUS,
    MC_ROW_COUNT
};

#endif