/* ************************************************************************** */
/*                                                                            */
/*                                                        ::::::::            */
/*   ft_select                                          :+:    :+:            */
/*                                                     +:+                    */
/*   Author: Noah Loomans                             +#+                     */
/*           <nloomans@student.codam.nl>             +#+                      */
/*                                                  #+#    #+#                */
/*   License: GPLv3                                ########   odam.nl         */
/*                                                                            */
/* ************************************************************************** */

#include <libft.h>
#include "derive.h"

static size_t	max(size_t a, size_t b)
{
	return (a > b ? a : b);
}

t_error			derive_dimensions(
					struct s_derived_dimensions *dimensions,
					struct s_state_terminal terminal,
					t_list2_meta options)
{
	if (DERIVE_PADDING_TOP + DERIVE_PADDING_BOTTOM + 1 > terminal.rows)
		return (errorf("terminal too short to display options"));
	dimensions->rows =
		terminal.rows - DERIVE_PADDING_TOP - DERIVE_PADDING_BOTTOM;
	dimensions->columns =
		(options.len / dimensions->rows) +
		((options.len % dimensions->rows) ? 1 : 0);
	return (ERROR_NULL);
}

t_error			derive_column_width(
					size_t **res,
					struct s_derived_dimensions dimensions,
					t_list2_meta options)
{
	size_t			row_index;
	size_t			column_index;
	t_list2_conn	*conn;

	*res = ft_memalloc(dimensions.columns * sizeof(**res));
	if (*res == NULL)
		return (errorf("unable to malloc column width array"));
	conn = options.first;
	column_index = 0;
	while (column_index < dimensions.columns)
	{
		row_index = 0;
		while (row_index < dimensions.rows && conn != NULL)
		{
			(*res)[column_index] = max(
				ft_strlen(unpack_option(conn)->name),
				(*res)[column_index]);
			conn = conn->next;
			row_index++;
		}
		column_index++;
	}
	return (ERROR_NULL);
}

bool			derive_enough_columns(
					struct s_state_terminal terminal,
					struct s_derived_dimensions dimensions,
					size_t *column_width)
{
	size_t	total_width;
	size_t	i;

	total_width = DERIVE_PADDING_LEFT + DERIVE_PADDING_RIGHT;
	i = 0;
	while (i < dimensions.columns)
	{
		total_width += DERIVE_OPTION_PADDING_LEFT
			+ column_width[i] + DERIVE_OPTION_PADDING_RIGHT;
		i++;
	}
	return (total_width <= terminal.columns);
}