// 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].GetMessage = VCR_GetMessage;
    net_drivers[0].SendMessage = 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;
}