/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   b_alias.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 <unistd.h>
#ifdef __linux__
# include <linux/limits.h>
#else
# include <limits.h>
#endif

#include "b_alias_print.h"
#include "b_alias_register.h"
#include "d_define.h"
#include "s_struct.h"
#include "u_alias.h"
#include "u_utils.h"
#include "u_vars.h"

static unsigned char	b_print_arg_next(char *ptr,
										const char arg[],
										t_bool invalid,
										t_msh *msh)
{
	char	val[ARG_MAX];

	if (*ptr == C_NUL)
	{
		if (u_get_alias_value(val, arg, ARG_MAX, msh) != 0)
		{
			ft_printf("alias %s='%s'", arg, val);
			return (0);
		}
		else
		{
			ft_dprintf(STDERR_FILENO, "minishell: alias: %s: not found\n", arg);
			return (1);
		}
	}
	else if (*ptr == C_EQUALS && invalid == TRUE)
	{
		ft_strlcpy(val, arg, ptr - arg);
		ft_dprintf(STDERR_FILENO,
			"minishell: alias: `%s': invalid alias name\n",
			val);
		return (1);
	}
	return (0);
}

static unsigned char	b_print_arg(const char arg[], t_msh *msh)
{
	char	*ptr;
	t_bool	invalid;

	ptr = (char*)arg;
	invalid = FALSE;
	while (*ptr != C_NUL && *ptr != C_EQUALS)
	{
		if (ft_iswhitespace(*ptr) == TRUE)
			invalid = TRUE;
		ptr++;
	}
	return (b_print_arg_next(ptr, arg, invalid, msh));
}

unsigned char			b_alias(char *args[], t_msh *msh)
{
	const unsigned long	argc = u_builtins_get_argc((const char**)args);
	int					i;
	unsigned char		ret;

	ret = 0;
	if (argc == 0)
	{
		if (msh->alias == NULL)
			return (0);
		b_print_alias_list(msh);
	}
	else if (argc > 0)
	{
		i = 0;
		while (args[i] != NULL)
		{
			if (b_print_arg(args[i], msh) != 0)
			{
				ret = 1;
			}
			i++;
		}
	}
	return (ret);
}

void					b_alias_mute(char *args[], t_msh *msh)
{
	const unsigned long	argc = u_builtins_get_argc((const char**)args);
	int					i;

	if (argc > 0)
	{
		i = 0;
		while (args[i] != NULL)
		{
			b_register_arg(args[i], msh);
			i++;
		}
	}
}