/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_e_externs.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 <dirent.h>

#include "ft_f_fail.h"
#include "ft_s_destroy.h"
#include "ft_s_lcom.h"
#include "ft_s_struct.h"

static void
	ft_search_in_path(const char *com,
					char **envpath)
{
	char	**p_path;

	(void)com;
	p_path = envpath;
	while (*p_path)
	{
		/* TODO: directory(3) */
		/* opendir() | readdir() | closedir() */
		p_path++;
	}
}

static char
	**ft_get_env_path(t_msh *msh)
{
	char	**p_env;
	char	**envpath;
	char	*envline;

	p_env = msh->envp;
	while (*p_env && ft_strncmp("PATH", *p_env, 4) != 0)
	{
		p_env++;
	}
	if (*p_env == NULL)
		return (NULL);
	envline = ft_strchr(*p_env, '=');
	envline += 1;
	if (*envline != '\0')
	{
		if (!(envpath = ft_split(envline, ':')))
		{
			ft_lcom_clear(&msh->curr);
			ft_s_destroy(msh);
			ft_fail_alloc();
		}
		return (envpath);
	}
	return (NULL);
}

void
	ft_e_extern(t_lcom *ptr,
				t_msh *msh)
{
	char	**envpath;

	if (ft_ischarset("/.", ptr->com[0]))
	{
		/* TODO: ft_get_absolute_path(ptr->com); */
	}
	else if ((envpath = ft_get_env_path(msh)) != NULL)
	{
		ft_search_in_path(ptr->com, envpath);
		ft_delwords(envpath);
	}
	/* TODO: exec $PATH stuff | initiate all builtins first, even uncomplete */
}