/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   c_utils.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rbousset <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/02/14 17:19:27 by rbousset          #+#    #+#             */
/*   Updated: 2020/02/14 17:19:29 by rbousset         ###   ########lyon.fr   */
/*                                                                            */
/* ************************************************************************** */

#include <libft.h>
#include <stdlib.h>
#include <term.h>
#include <unistd.h>

#include "c_init.h"
#include "c_input.h"
#include "m_prompt.h"
#include "m_loop.h"
#include "s_struct.h"

static unsigned int
	c_redraw_next(size_t plen, unsigned int len, t_caps *tcaps)
{
	unsigned int	i;
	unsigned int	j;

	i = (tcaps->nlines == tcaps->lpos) ? 0 :
		tcaps->ws.ws_col * (tcaps->lpos - 1);
	j = tcaps->nlines;
	if (tcaps->nlines != tcaps->lpos)
	{
		while (--j > tcaps->lpos)
			tputs(tgetstr("up", NULL), 1, ft_putchar);
		tputs(tgetstr("up", NULL), 1, ft_putchar);
		tputs(tgetstr("cr", NULL), 1, ft_putchar);
		while (i < (tcaps->cpos + plen))
		{
			tputs(tgetstr("nd", NULL), 1, ft_putchar);
			i++;
		}
	}
	else
		while (len > tcaps->cpos)
		{
			tputs(tgetstr("le", NULL), 1, ft_putchar);
			len--;
		}
	return (len);
}

unsigned int
	c_redraw_line(char *line, t_caps *tcaps)
{
	unsigned int	i;
	unsigned int	j;

	tcaps->nlines = c_get_line_num(line, tcaps->cpos,
		tcaps->plen, tcaps);
	i = 0;
	j = tcaps->lpos;
	tputs(tgetstr("cr", NULL), 1, ft_putchar);
	while (--j > 0)
	{
		tputs(tgetstr("sf", NULL), 1, ft_putchar);
		tputs(tgetstr("up", NULL), 1, ft_putchar);
		tputs(tgetstr("up", NULL), 1, ft_putchar);
	}
	while (i++ < tcaps->plen)
		tputs(tgetstr("nd", NULL), 1, ft_putchar);
	ft_printf("%s", line);
	return ((tcaps->cpos != ft_strlen(line)) ?
		c_redraw_next(tcaps->plen, ft_strlen(line), tcaps) :
		ft_strlen(line));
}

void
	c_add_char(char **line, char *buf, t_caps *tcaps)
{
	int		i;
	size_t	j;
	size_t	len;
	char	*dst;

	i = -1;
	j = 0;
	len = (ft_strlen(*line) + 2);
	if (!(dst = (char*)ft_calloc(sizeof(char), len)))
		return ;
	while (++i < (int)len)
		if (i == (int)tcaps->cpos)
			dst[i] = buf[0];
		else
			dst[i] = line[0][j++];
	ft_memdel((void**)&line[0]);
	*line = ft_strdup(dst);
	ft_memdel((void**)&dst);
	tcaps->cpos++;
	if ((((tcaps->cpos) + tcaps->plen) % tcaps->ws.ws_col) == 0)
	{
		write(STDOUT_FILENO, "\n\r", 2);
		return ;
	}
	c_redraw_line(*line, tcaps);
}

char
	*c_delchar(char *str, unsigned short cpos)
{
	unsigned short	i;
	unsigned short	j;
	char			*dst;

	j = 0;
	i = 0;
	if (!(dst = malloc((ft_strlen(str)) * sizeof(char))))
		return (NULL);
	cpos -= 1;
	while (j < (ft_strlen(str) - 1))
	{
		if (i == cpos)
			i++;
		dst[j] = str[i];
		i++;
		j++;
	}
	ft_memdel((void**)&str);
	dst[j] = '\0';
	return (dst);
}

void
	c_new_line(t_caps *tcaps)
{
	size_t	i;

	i = tcaps->lpos;
	write(1, "\n", 1);
	tputs(tgetstr("cr", NULL), 1, ft_putchar);
	c_set_term_raw(0);
	tcaps->cpos = 0;
	tputs(tgetstr("cr", NULL), 1, ft_putchar);
	if (i < tcaps->nlines && tcaps->nlines != 1)
		while (i++ < tcaps->nlines)
		{
			write(1, "\n", 1);
		}
}