/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   expand_wildcard.c                                  :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: khais <marvin@42.fr>                       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2025/04/03 19:28:28 by khais             #+#    #+#             */
/*   Updated: 2025/04/21 14:42:41 by khais            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "../../ft_errno.h"
#include "expand_wildcard.h"
#include "../../subst/subst.h"
#include "../../parser/redirect/redirect.h"
#include "../../parser/cmd/cmd_destroy.h"
#include "../ambiguous_redirect.h"

static t_redirect	*redirect_expand_wildcard_one(t_redirect *current)
{
	t_wordlist	*expansion_result;

	expansion_result = expand_star(current->redirectee.filename);
	if (expansion_result != NULL)
	{
		worddesc_destroy(current->redirectee.filename);
		current->redirectee.filename = wordlist_pop(&expansion_result);
		if (expansion_result != NULL)
		{
			ambiguous_redirect(current->unexpanded_filename);
			redirect_destroy(current);
			wordlist_destroy(expansion_result);
			return (ft_errno(FT_EERRNO), NULL);
		}
	}
	return (current);
}

static t_redirect	*redirect_expand_wildcards(t_redirect *in_list)
{
	t_redirect	*out_list;
	t_redirect	*current;

	out_list = NULL;
	while (in_list != NULL)
	{
		current = redirect_pop(&in_list);
		if (current->type != FT_HEREDOC)
		{
			if (redirect_expand_wildcard_one(current) == NULL)
			{
				redirect_destroy(in_list);
				redirect_destroy(out_list);
				return (NULL);
			}
		}
		out_list = t_redirect_add_back(&out_list, current);
	}
	return (out_list);
}

static t_wordlist	*wordlist_expand_wildcards(t_wordlist *inlist)
{
	t_wordlist	*outlist;
	t_worddesc	*current;
	t_wordlist	*expansion_result;

	outlist = NULL;
	while (inlist != NULL)
	{
		current = wordlist_pop(&inlist);
		expansion_result = expand_star(current);
		if (expansion_result == NULL)
			outlist = wordlist_push(outlist, current);
		else
		{
			while (expansion_result != NULL)
				outlist = wordlist_push(outlist,
						wordlist_pop(&expansion_result));
			worddesc_destroy(current);
		}
	}
	return (outlist);
}

t_simple_cmd	*simple_cmd_expand_wildcards(t_simple_cmd *cmd)
{
	cmd->words = wordlist_expand_wildcards(cmd->words);
	ft_errno(FT_ESUCCESS);
	if (redirect_expand_wildcards(cmd->redirections) == NULL
		&& ft_errno_get() != FT_ESUCCESS)
	{
		cmd->redirections = NULL;
		return (NULL);
	}
	return (cmd);
}