/*
 * Copyright (C) 1996-1997 Id Software, Inc.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.
 *
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 */
// net_vcr.c

#include "quakedef.h"
#include "net_vcr.h"

extern FILE  *vcrFile;

// This is the playback portion of the VCR.  It reads the file produced
// by the recorder and plays it back to the host.  The recording contains
// everything necessary (events, timestamps, and data) to duplicate the game
// from the viewpoint of everything above the network layer.

static struct {
    double        time;
    int           op;
    long          session;
} next;

int VCR_Init (void) {
    net_drivers[0].Init = VCR_Init;

    net_drivers[0].SearchForHosts = VCR_SearchForHosts;
    net_drivers[0].Connect = VCR_Connect;
    net_drivers[0].CheckNewConnections = VCR_CheckNewConnections;
    net_drivers[0].QGetMessage = VCR_GetMessage;
    net_drivers[0].QSendMessage = VCR_SendMessage;
    net_drivers[0].CanSendMessage = VCR_CanSendMessage;
    net_drivers[0].Close = VCR_Close;
    net_drivers[0].Shutdown = VCR_Shutdown;

    fread (&next, 1, sizeof (next), vcrFile);
    return 0;
}

void VCR_ReadNext (void) {
    if (!fread (&next, 1, sizeof (next), vcrFile)) {
        next.op = 255;
        Sys_Error ("=== END OF PLAYBACK===\n");
    }
    if (next.op < 1 || next.op > VCR_MAX_MESSAGE)
        Sys_Error ("VCR_ReadNext: bad op");
}

void VCR_Listen (qboolean state) {
}

void VCR_Shutdown (void) {
}

int VCR_GetMessage (qsocket_t * sock) {
    int           ret;

    if (host_time != next.time || next.op != VCR_OP_GETMESSAGE || next.session != *(long *) (&sock->driverdata))
        Sys_Error ("VCR missmatch");

    fread (&ret, 1, sizeof (int), vcrFile);
    if (ret != 1) {
        VCR_ReadNext ();
        return ret;
    }

    fread (&net_message.cursize, 1, sizeof (int), vcrFile);
    fread (net_message.data, 1, net_message.cursize, vcrFile);

    VCR_ReadNext ();

    return 1;
}

int VCR_SendMessage (qsocket_t * sock, sizebuf_t * data) {
    int           ret;

    if (host_time != next.time || next.op != VCR_OP_SENDMESSAGE || next.session != *(long *) (&sock->driverdata))
        Sys_Error ("VCR missmatch");

    fread (&ret, 1, sizeof (int), vcrFile);

    VCR_ReadNext ();

    return ret;
}

qboolean VCR_CanSendMessage (qsocket_t * sock) {
    qboolean      ret;

    if (host_time != next.time || next.op != VCR_OP_CANSENDMESSAGE || next.session != *(long *) (&sock->driverdata))
        Sys_Error ("VCR mismatch");

    fread (&ret, 1, sizeof (int), vcrFile);

    VCR_ReadNext ();

    return ret;
}

void VCR_Close (qsocket_t * sock) {
}

void VCR_SearchForHosts (qboolean xmit) {
}

qsocket_t    *VCR_Connect (char *host) {
    return NULL;
}

qsocket_t    *VCR_CheckNewConnections (void) {
    qsocket_t    *sock;

    if (host_time != next.time || next.op != VCR_OP_CONNECT)
        Sys_Error ("VCR missmatch");

    if (!next.session) {
        VCR_ReadNext ();
        return NULL;
    }

    sock = NET_NewQSocket ();
    *(long *) (&sock->driverdata) = next.session;

    fread (sock->address, 1, NET_NAMELEN, vcrFile);
    VCR_ReadNext ();

    return sock;
}
