#include "sockets.h"
#include "globaldefs.h"

#if GDEF_OS_WINDOWS
#include <winsock2.h>
#elif GDEF_OS_POSIX

#include <sys/time.h>

const int SOCKET_ERROR = -1;
#else
#error "unsupported platform"
#endif

#if GDEF_OS_MACOS
#include <unistd.h>
#endif

int Net_Wait(socket_t *sock, long sec, long usec)
{
// used for select()
#if GDEF_OS_WINDOWS
    TIMEVAL tout = { sec, usec };
#endif
#if GDEF_OS_POSIX
    timeval tout;
    tout.tv_sec = sec;
    tout.tv_usec = usec;
#endif

    // select() will identify if the socket needs an update
    // if the socket is identified that means there's either a message or the connection has been closed/reset/terminated
    fd_set readfds;
    FD_ZERO(&readfds);
    FD_SET(((unsigned int) sock->socket), &readfds);
    // from select man page:
    // n is the highest-numbered descriptor in any of the three sets, plus 1
    // (no use on windows)
    switch (select(sock->socket + 1, &readfds, 0, 0, &tout)) {
        case SOCKET_ERROR:
            return -1;
        case 0:
            return 0;
        default:
            return 1;
    }
}