/*
 * This file Copyright (C) 2007-2008 Charles Kerr <charles@rebelbase.com>
 *
 * This file is licensed by the GPL version 2.  Works owned by the
 * Transmission project are granted a special exemption to clause 2(b)
 * so that the bulk of its code can remain under the MIT license.
 * This exemption does not extend to derived works not owned by
 * the Transmission project.
 *
 * $Id$
 */

#ifndef __TRANSMISSION__
#error only libtransmission should #include this header.
#endif

#ifndef _TR_TRACKER_H_
#define _TR_TRACKER_H_

#include <inttypes.h> /* for uint8_t */
#include "transmission.h"
#include "publish.h"

/**
***  Locating a tracker
**/

typedef struct tr_tracker tr_tracker;

tr_tracker * tr_trackerNew( const tr_torrent * );

void         tr_trackerFree( tr_tracker * );

void         tr_trackerSessionClose( tr_handle * );

/**
***  Tracker Publish / Subscribe
**/

typedef enum
{
    TR_TRACKER_WARNING,
    TR_TRACKER_ERROR,
    TR_TRACKER_ERROR_CLEAR,
    TR_TRACKER_PEERS
}
TrackerEventType;

typedef struct
{
    /* what type of event this is */
    TrackerEventType    messageType;

    /* the torrent's 20-character sha1 hash */
    const uint8_t *  hash;

    /* for TR_TRACKER_WARNING and TR_TRACKER_ERROR */
    const char *  text;

    /* for TR_TRACKER_PEERS */
    const uint8_t *  compact;
    int              compactLen;
    int              allAreSeeds;
}
tr_tracker_event;

tr_publisher_tag        tr_trackerSubscribe( struct tr_tracker * tag,
                                             tr_delivery_func    func,
                                             void *              user );

void                    tr_trackerUnsubscribe( struct tr_tracker * tracker,
                                               tr_publisher_tag    tag );

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

void                    tr_trackerStat( const tr_tracker * tracker,
                                        struct tr_stat *   setme );

void                    tr_trackerStart( struct tr_tracker * );

void                    tr_trackerCompleted( struct tr_tracker * );

void                    tr_trackerStop( struct tr_tracker * );

void                    tr_trackerReannounce( struct tr_tracker * );

void                    tr_trackerChangeMyPort( struct tr_tracker * );

const tr_tracker_info * tr_trackerGetAddress( struct tr_tracker * );

int                     tr_trackerCanManualAnnounce( const struct tr_tracker * );

time_t                  tr_trackerGetManualAnnounceTime( const struct tr_tracker * );

void                    tr_trackerGetCounts( const struct tr_tracker *,
                                             int * setme_completedCount,
                                             int * setme_leecherCount,
                                             int * setme_seederCount,
                                             int * setme_downloaderCount );

#endif