/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   handle_argv.c                                      :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/10/08 09:22:12 by lperrey           #+#    #+#             */
/*   Updated: 2021/12/18 04:46:05 by lperrey          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "minishell.h"

int		remap_stdin_to_script_file(char	*script_file);
char	*init_prompt_base(void);

int	handle_argv(t_all *c, char *argv[])
{
	int	ret;

	if (argv[1])
	{
		ret = remap_stdin_to_script_file(argv[1]);
		if (ret)
			exit_free(c, ret);
	}
	else if (isatty(STDIN_FILENO))
	{
		c->prompt_base = init_prompt_base();
		if (!c->prompt_base)
			return (ft_reti_perror(0, "init_prompt_base()"));
		c->prompt = init_prompt(c->prompt_base);
		if (!c->prompt)
			return (ft_reti_perror(0, "init_prompt()"));
	}
	return (1);
}

int	remap_stdin_to_script_file(char	*script_file)
{
	int	fd;
	int	ret;
	int	tmp;

	fd = open(script_file, O_RDONLY);
	if (fd == -1)
	{
		shell_perror(script_file, ": ", "", 0);
		return (EXIT_CMD_NOT_FOUND);
	}
	ret = dup2(fd, STDIN_FILENO);
	tmp = errno;
	if (close(fd) == -1)
		perror("close()");
	if (ret == -1)
	{
		errno = tmp;
		return (ft_reti_perror(EXIT_FAILURE, "dup2()"));
	}
	return (0);
}