/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   get_next_line.c                                    :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: abaidali <abaidali@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2019/10/02 22:50:22 by abaidali          #+#    #+#             */
/*   Updated: 2019/10/13 00:17:58 by abaidali         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "get_next_line.h"

static int      get_line(char **s, char **line)
{
    int     len;
    char    *tmp;

    len = 0;
    while ((*s)[len] != '\n' && (*s)[len] != '\0')
        len++;
    if ((*s)[len] == '\n')
    {
        *line = ft_strsub(*s, 0, len);
        tmp = ft_strdup(&((*s)[len + 1]));
        free(*s);
        *s = tmp;
        if ((*s)[0] == '\0')
            ft_strdel(s);
    }
    else
    {
        *line = ft_strdup(*s);
        ft_strdel(s);
    }
    return (1);
}

static int      ft_result(char **s, char **line, int res, int fd)
{
    if (res < 0)
        return (-1);
    else if (res == 0 && s[fd] == NULL)
        return (0);
    else
        return (get_line(&s[fd], line));
}

int             get_next_line(const int fd, char **line)
{
    int         status;
    static char *s[MAX_FD];
    char        buf[BUFF_SIZE + 1];
    char        *tmp;

    if (fd < 0 || line == NULL)
        return (-1);
    while ((status = read(fd, buf, BUFF_SIZE)) > 0)
    {
        buf[status] = '\0';
        if (s[fd] == NULL)
            s[fd] = ft_strdup(buf);
        else
        {
            tmp = ft_strjoin(s[fd], buf);
            free(s[fd]);
            s[fd] = tmp;
        }
        if (ft_strchr(s[fd], '\n'))
            break ;
    }
    return (ft_result(s, line, status, fd));
}