/*
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 int 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;

    Sys_FileRead(vcrFile, &next, sizeof(next));
    return 0;
}

void VCR_ReadNext(void)
{
    if (Sys_FileRead(vcrFile, &next, sizeof(next)) == 0) {
        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");
    }

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

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

    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");
    }

    Sys_FileRead(vcrFile, &ret, sizeof(int));

    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 missmatch");
    }

    Sys_FileRead(vcrFile, &ret, sizeof(int));

    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;

    Sys_FileRead(vcrFile, sock->address, NET_NAMELEN);
    VCR_ReadNext();

    return sock;
}
