/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_e_builtin.c                                     :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rbousset <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/02/14 17:19:27 by rbousset          #+#    #+#             */
/*   Updated: 2020/02/14 17:19:29 by rbousset         ###   ########lyon.fr   */
/*                                                                            */
/* ************************************************************************** */

#include <libft.h>
#include <stdlib.h>
#include <stdint.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/wait.h>
#include <errno.h>
#include "ft_s_destroy.h"
#include "ft_s_lcom.h"
#include "ft_s_struct.h"

void
	ft_e_builtin(const t_lcom *ptr,
				uint8_t bu_id,
				t_msh *msh)
{
	int32_t	fd;
	int32_t	status;
	int32_t	ret;
	pid_t	pid;

	/* TODO: handle exit | bu_id = 6 */
	if ((pid = fork()) == 0)
	{
		if (ptr->redir == -1)
		{
			if (ptr->redir == -1 && (fd = open(ptr->rdrpath, O_RDONLY)) == -1)
			{
				if (errno == ENOENT)
					ft_dprintf(STDERR_FILENO,
					"minishell: %s: No such file or directory\n", ptr->rdrpath);
				else if (errno == EACCES)
					ft_dprintf(STDERR_FILENO,
					"minishell: %s: Permission denied\n", ptr->rdrpath);
			}
		}
		else if (ptr->redir == 1)
		{
			if ((fd = open(ptr->rdrpath,
						   O_CREAT | O_TRUNC | O_WRONLY, 0644)) == -1)
			{
				/* TODO: handle err with errno */
				if (errno == EACCES)
					ft_dprintf(STDERR_FILENO,
					   "minishell: %s: Permission denied\n", ptr->rdrpath);
			}
			dup2(fd, STDOUT_FILENO);
			close(fd);
		}
		else if (ptr->redir == 2)
		{
			if ((fd = open(ptr->rdrpath,
						   O_CREAT | O_APPEND | O_WRONLY, 0644)) == -1)
			{
				/* TODO: handle err with errno */
				if (errno == EACCES)
					ft_dprintf(STDERR_FILENO,
						"minishell: %s: Permission denied\n", ptr->rdrpath);
			}
			dup2(fd, STDOUT_FILENO);
			close(fd);
		}
		msh->ret = msh->bu_ptr[bu_id](ptr->args, msh);
		ret = msh->ret;
		ft_lcom_clear(&msh->curr);
		ft_s_destroy(msh);
		exit(ret);
	}
	else if (pid < 0)
	{
		/* TODO: handle fork failed */
	}
	else
	{
		while (wait(&status) != pid)
		{
			/* TODO: fix this unnormed syntax */
		}
		msh->ret = status;
	}
}