/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   b_export.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 "b_env.h"
#include "f_fail.h"
#include "s_struct.h"
#include "u_utils.h"

static int8_t
	check_valid_identifier(const char *arg)
{
	char	*ptr;

	ptr = (char*)arg;
	if (ft_isalpha(ptr[0]))
	{
		return (1);
	}
	return (0);
}

static int8_t
	check_equals(const char *arg)
{
	char	*ptr;

	ptr = (char*)arg;
	while (*ptr)
	{
		if (*ptr == '=')
			return (1);
		ptr++;
	}
	return (0);
}

uint8_t
	b_export(char *args[],
			 	t_msh *msh)
{
	const uint64_t	argc = get_argc((const char**)args);
	char			**ptr;
	int8_t			next;
	uint8_t			r;

	if (argc == 0)
	{
		return (b_env(NULL, msh));
	}
	ptr = args;
	r = 0;
	while (*ptr)
	{
		ft_printf("export: [%s]\n", *ptr);
		next = 0;
		if (!check_valid_identifier(*ptr))
		{
			fail_identifier("export", *ptr, msh);
			next = 1;
			r = 1;
		}
		if (next == 0 && !check_equals(*ptr))
		{
			next = 1;
			/* TODO: export already set variable */
			/* examples: */
			/* ~> QWE=qwe */
			/* ~> export QWE */
			/* -------------- */
			/* # non-existant variable QWE */
			/* ~> export QWE */
		}
		ptr++;
	}
	 /* TODO: finish export */
	return (r);
}