/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   get_next_line.c                                    :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: erey-bet <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/10/15 23:42:35 by erey-bet          #+#    #+#             */
/*   Updated: 2022/11/07 17:11:17 by erey-bet         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "get_next_line.h"

void	*read_line(char *str, char *buff, int fd, int y)
{
	y = read(fd, buff, BUFFER_SIZE);
	if (y == -1 || (ft_strlen(buff) == 0 && str == NULL))
	{
		free(buff);
		return (NULL);
	}
	buff[y] = '\0';
	return (buff);
}

int	get_next(char *str, char *buff, int y, int last_malloc)
{
	if (y == -1 || (ft_strlen(buff) == 0 && str == NULL))
	{
		free(buff);
		return (-1);
	}
	buff[y] = '\0';
	if (str == NULL)
	{
		str = ft_calloc(BUFFER_SIZE + 1, 1);
		ft_strlcpy(str, buff, BUFFER_SIZE + 1);
	}
	else
	{
		if ((size_t)last_malloc - 1 < ft_strlen(str) + ft_strlen(buff))
		{
			str = ft_realloc(str, last_malloc);
			last_malloc += BUFFER_SIZE;
		}
		ft_strlcpy(str + ft_strlen(str), buff, BUFFER_SIZE + 1);
	}
	return (last_malloc);
}

char	*get_next_line(int fd)
{
	char		*buff;
	static char	*str;
	size_t		i;
	int	y;
	static int	last_malloc;

	last_malloc = BUFFER_SIZE + 1;
	buff = ft_calloc(BUFFER_SIZE + 1, 1);
	y = 1;
	while ((str == NULL || ft_strchr(str, '\n') == -1) && y > 0)
	{
		y = read(fd, buff, BUFFER_SIZE);
		last_malloc = get_next(str, buff, y, last_malloc);
		if (last_malloc == -1)
			return (NULL);
	}
	i = 0;
	while (str[i] != '\n' && str[i])
		i++;
	if (str[i] == '\n')
		i++;
	free(buff);
	buff = malloc(i + 1);
	ft_strlcpy(buff, str, i + 1);
	buff[i] = '\0';
	ft_strlcpy(str, str + i, BUFFER_SIZE + 1);
	if (ft_strlen(str) == 0)
	{
		free(str);
		str = NULL;
	}
	return (buff);
}

#include <fcntl.h>
#include <stdio.h>

int	main(int argc, char *argv[])
{
	char	*r;
	int		fd;
	(void) argc;

	fd = open(argv[1], 0);
	r = get_next_line(fd);
	printf("%s", r);
	printf("\n");
	free(r);
	r = get_next_line(fd);
	printf("%s", r);
	printf("\n");
	free(r);
	r = get_next_line(fd);
	printf("%s", r);
	printf("\n");
	r = get_next_line(fd);
	printf("%s", r);
	printf("\n");
	r = get_next_line(fd);
	printf("%s", r);
	printf("\n");
	r = get_next_line(fd);
	printf("%s", r);
	printf("\n");
	r = get_next_line(fd);
	printf("%s", r);
	printf("\n");
	
	free(r);
	close(fd);
	return (0);
}