/* ************************************************************************** */
/*                                                                            */
/*                                                  :::  o_   ::::::    :::   */
/*   server.c                                      :+:  /    :+::+:    :+:    */
/*                                                +:+   >   +:++:+    +:+     */
/*   By: whaffman <whaffman@student.codam.nl>    +#+  +:+  +#++#++:++#++      */
/*                                              +#+ +#+#+ +#++#+    +#+ \o/   */
/*   Created: 2024/07/18 17:24:54 by whaffman   #+#+# #+#+# #+#    #+#   |    */
/*   Updated: 2024/07/27 18:23:52 by whaffman   ###   ###  ###    ###   / \   */
/*                                                                            */
/* ************************************************************************** */

#include <signal.h>
#include <unistd.h>
#include <stdio.h>
#include "libft/libft.h"

void	signal_handler(int signum, siginfo_t *info, void *context)
{
	static int		count = 0;
	static char		c = '\0';
	static pid_t	client_pid;

	(void) context;
	if (client_pid != info->si_pid)
	{
		count = 0;
		c = '\0';
		client_pid = info->si_pid;
	}
	count++;
	if (signum == SIGUSR1)
		c |= 1 << (8 - count);
	if (count == 8)
	{
		if (c)
			write(1, &c, 1);
		else
			write(1, "\n", 1);
		c = '\0';
		count = 0;
	}
	kill(info->si_pid, SIGUSR1);
	return ;
}

int	main(void)
{
	struct sigaction	sa;

	ft_putstr("MiniTalk Server started on pid: ");
	ft_putnbr(getpid());
	ft_putstr("\n");
	sa.sa_sigaction = signal_handler;
	sigemptyset(&sa.sa_mask);
	sa.sa_flags = SA_SIGINFO;
	sigaction(SIGUSR1, &sa, NULL);
	sigaction(SIGUSR2, &sa, NULL);
	while (1)
		pause();
}