/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   bruteforce.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: jmikola <jmikola@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/07/22 12:00:11 by psalame           #+#    #+#             */
/*   Updated: 2023/07/23 12:43:04 by psalame          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

int	get_area_size(void);
int	ft_test_possibility(int **tab, int i);
int	verif_non_double(int i, int **tab);
int	verif_col_down(int i, int **tab);
int	verif_col_up(int i, int **tab);
int	verif_row_right(int i, int **tab);
int	verif_row_left(int i, int **tab);
int	**get_row(void);
int	**get_col(void);

int	verif_all_row(int i, int **tab)
{
	int	row_left;
	int	row_right;
	int	area_size;

	area_size = get_area_size();
	row_left = verif_row_left(i, tab);
	row_right = verif_row_right(i, tab);
	if (((i % area_size) == area_size - 1))
	{
		if (row_left != get_row()[i / area_size][0]
			|| row_right != get_row()[i / area_size][1])
			return (0);
	}
	else if (row_left > get_row()[i / area_size][0])
		return (0);
	return (1);
}

int	verif_all_col(int i, int **tab)
{
	int	col_up;
	int	col_down;
	int	area_size;

	area_size = get_area_size();
	col_up = verif_col_up(i, tab);
	col_down = verif_col_down(i, tab);
	if (((i / area_size) == area_size - 1))
	{
		if (col_up != get_col()[i % area_size][0]
			|| col_down != get_col()[i % area_size][1])
			return (0);
	}
	else if (col_up > get_col()[i % area_size][0])
		return (0);
	return (1);
}

int	verif(int i, int **tab)
{
	if (!verif_non_double(i, tab))
		return (0);
	return (verif_all_row(i, tab) && verif_all_col(i, tab));
}

int	is_possibility_valid(int **tab, int i)
{
	int	area_size;

	area_size = get_area_size();
	if (i == area_size * area_size - 1)
		return (1);
	else
		return (ft_test_possibility(tab, i + 1));
}

int	ft_test_possibility(int **tab, int i)
{
	int	area_size;
	int	height;

	area_size = get_area_size();
	if (tab[i / area_size][i % area_size] == 0)
	{
		height = 0;
		while (++height <= area_size)
		{
			tab[i / area_size][i % area_size] = height;
			if (verif(i, tab))
			{
				if (is_possibility_valid(tab, i))
					return (1);
			}
		}
		tab[i / area_size][i % area_size] = 0;
		return (0);
	}
	else
	{
		if (!verif(i, tab))
			return (0);
		return (is_possibility_valid(tab, i));
	}
}