#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <signal.h>
#include "helpers.c"
#include "helpers.h"

#define BUF_SIZE 256

void kill_son(int)
{
    if (waitpid(-1, NULL, WNOHANG) == 0)
    {
        kill(0, SIGTERM);
    }
    else
        exit(0);
}
int main(int argc, char **argv)
{
    char *args[argc - 1];
    int secondes = (int)strtod(argv[1], NULL);
    pid_t p;
    if (argc < 3)
    {
        printf("Usage : %s <nbsec> <com> [arg]", argv[0]);
        return EXIT_FAILURE;
    }
    for (int i = 2; i < argc; i++)
    {
        args[i - 2] = argv[i];
    }
    args[argc - 2] = NULL;
    p = fork();
    switch (p)
    {
    case 0:
        execvp(argv[2], args);
        exit(0);
    case -1:
        exit(EXIT_FAILURE);
    default:
        alarm(secondes);
        set_signal_handler(SIGALRM, &kill_son);
        sleep(secondes);
    }
    exit(0);
}