/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   part2.c                                            :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: tomoron <tomoron@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/07/17 23:03:36 by tomoron           #+#    #+#             */
/*   Updated: 2025/12/09 12:37:36 by tomoron          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include <stdio.h>
#include <stdlib.h>
#include "libft/libft.h"

long int get_timelines(char **map, int x, int y, long int *hash, int len)
{
	long int res;
	int start_x;
	int start_y;

	start_x = x;
	start_y = y;
	if(hash[y * len + x])
		return(hash[y * len + x]);

	while(map[y] && map[y][x] == '.')
		y++;	
	if(map[y])
	{
		res = get_timelines(map, x+1, y, hash, len);
		res += get_timelines(map, x-1, y, hash, len);
	}
	else
		res = 1;
	hash[start_y * len + start_x] = res;
	return(res);

}

long int *create_hashmap(char **map)
{
	int len;
	int height;

	len = 0;
	height = 0;
	while(map[0][len])
		len++;
	while(map[height])
		height++;
	return(malloc(len * height * sizeof(long int)));
}

long int resolve_part2(char *input, char **split)
{
	(void)input;
	long int res;
	long int *hash;
	int len;
	int s_pos;

	len = 0;
	hash = create_hashmap(split);
	s_pos = 0;
	if(!hash)
		return(0);
	while(split[0][len])
	{
		if(split[0][len] == 'S')
			s_pos = len;
		len++;
	}
	res = get_timelines(split, s_pos, 0, hash,len);
	return(res);
}