/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   include.h                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mcolonna <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/04/23 14:15:12 by mcolonna          #+#    #+#             */
/*   Updated: 2024/04/26 14:21:43 by mcolonna         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#ifndef INCLUDE_H
# define INCLUDE_H

# include <stdbool.h>
# include <stdio.h>
# include <errno.h>
# include <string.h>
# include <sys/types.h>
# include <unistd.h>
# include <fcntl.h>
# include <stdlib.h>
# include <strings.h>
# include <sys/wait.h>
# include "libft.h"
# include "libtf.h"

///// ASK COMMAND /////

// Show the prompt and ask a command to the user.
// Return the command.
const char	*ask_command(t_memclass mc);

///// PARSE_COMMAND /////

// Represents a call to a program (the program name and its arguments)
typedef struct s_call
{
	const char			*program; // path of the program to call.
	int					argc; // number of arguments given
	char *const			*argv; // arguments given (ended by NULL)
	// (argc and argv must include the program name)
}						t_call;

// Represents a command given by the user.
typedef struct s_command
{
	bool			error; // true if an error occured in interpret_command().
	const t_call	*calls; // all calls to programs (ended by .program == NULL)
	int				input_fd; // fd to use with '<' redirection (0 by default)
	int				output_fd; // fd to use with '>' redirection (1 by default)
}					t_command;

// Return the t_command representing the command given by the user.
// If error, return a t_command wth the value .error = true.
t_command	parse_command(const t_memclass mc, const char *command);

///// EXECUTE COMMAND /////

// Execute the command given. Return the exit status.
int			execute_command(t_memclass mc, t_command command,
				char *const envp[]);

///// ERROR /////

// Call to show an error.
// If msg == "errno", use strerror(errno)
void		minishell_error(const char *msg);

// Call to write the error and exit the program.
void		fatal_error(const char *msg);

///// PATH /////

// Get the PATH values.
// Return a list of strings ended by NULL.
char		**get_path(char *const envp[]);

// Search the program in PATH.
// Returns the path of the program to use, or NULL if there is none.
const char	*search_path(
				const t_memclass mc, const char **path, const char *prog);

#endif