/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   input_redirections.c                               :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: marde-vr <marde-vr@42angouleme.fr>         +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/03/05 18:15:27 by marde-vr          #+#    #+#             */
/*   Updated: 2024/04/19 14:49:43 by tomoron          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "minishell.h"

void	redirect_input(t_msh *msh, int i)
{
	if (msh->in_type != PIPE)
	{
		//fprintf(stderr, "redirecting input\n");
		if (dup2(msh->in_fd, 0) < 0)
			ft_exit(msh, 1);
		close(msh->in_fd);
	}
	else
	{
		//fprintf(stderr, "redirecting pipe input\n");
		//fprintf(stderr, "input of cmd %d: %d -> 0\n", i, msh->fds[i - 1][0]);
		if (dup2(msh->fds[i - 1][0], 0) < 0)
		{
			perror("dup2"); //debug
			ft_exit(msh, 1);
		}
	}
}

int	open_input_file(t_msh *msh, t_cmd **cur_token)
{
	t_token	*filename;

	if ((*cur_token)->cmd_type == HERE_DOC)
		handle_here_doc(msh, (*cur_token)->value);
	if ((*cur_token)->cmd_type == RED_I)
	{
		if (msh->in_fd != 0)
			close(msh->in_fd);
		filename = parse_tokens((*cur_token)->value, msh->env);
		if (!filename)
			ft_exit(msh, 1);
		msh->in_fd = open(filename->value, O_RDONLY);
		free_token(filename);
		if (msh->in_fd == -1)
		{
			fprintf(stderr, "minishell: %s: ", (*cur_token)->next->value);
			perror("");
			return (1);
		}
	}
	return (0);
}

int	get_in_type(t_msh *msh, t_cmd *tokens)
{
	t_cmd	*cur_token;

	cur_token = tokens;
	if (cur_token && cur_token->cmd_type == PIPE)
	{
		msh->in_type = PIPE;
		return (0);
	}
	while (cur_token && (cur_token->cmd_type == CMD
			|| cur_token->cmd_type == PAREN))
		cur_token = cur_token->next;
	if (cur_token && is_input_type(cur_token))
	{
		msh->in_type = cur_token->cmd_type;
		if (open_input_file(msh, &cur_token))
			return (1);
	}
	if (cur_token && cur_token->next && !is_operand_type(cur_token->next))
		return (get_in_type(msh, cur_token->next));
	return (0);
}

int	first_is_in_type(t_cmd *cmd)
{
	t_cmd	*cur_token;

	cur_token = cmd;
	while (cur_token && cur_token->cmd_type == CMD && cur_token->next)
		cur_token = cur_token->next;
	if (is_input_type(cur_token) || cur_token->cmd_type == PIPE)
		return (1);
	return (0);
}