/******************************************************************************
 * $Id$
 *
 * 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 "tr_torrent.h"
#include "util.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;

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

    /* "directory-prompt" signal:
       void handler( TrCore *, GList *, gpointer ctor, gpointer userData ) */
    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,    /* adding a torrent failed */
    /* no more torrents to be added, used for grouping torrent add errors */
    TR_CORE_ERR_NO_MORE_TORRENTS,
    TR_CORE_ERR_SAVE_STATE      /* error saving state */
};

GType
tr_core_get_type( void );

TrCore *
tr_core_new( void );

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

/* Returns the libtransmission handle */
tr_handle *
tr_core_handle( TrCore * self );

const struct core_stats*
tr_core_get_stats( const TrCore * self );

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

/**
 * 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 torrent.
 * May trigger an "error" signal with TR_CORE_ERR_ADD_TORRENT
 * Caller must free the ctor.
 */
void tr_core_add_ctor( TrCore * self, tr_ctor * ctor );

/**
 * Add a list of torrents.
 * May trigger one or more "error" signals with TR_CORE_ERR_ADD_TORRENT
 */
void tr_core_add_list( TrCore   * self,
                       GList    * torrentFiles,
                       tr_ctor  * ctor );

/**
 * 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 );

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

/* remove a torrent, waiting for it to pause if necessary */
void
tr_core_delete_torrent( TrCore * self, GtkTreeIter * iter /* XXX */ );

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

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

/* 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_HASH,
    MC_TORRENT,
    MC_TORRENT_RAW,
    MC_STATUS,
    MC_ID,
    MC_ROW_COUNT
};

#endif