/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   map_utils2.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mcolonna <mcolonna@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/10/04 15:12:08 by mcolonna          #+#    #+#             */
/*   Updated: 2024/10/15 16:27:41 by mcolonna         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "map_utils.h"
#include "map_mapping.h"
#include "map.h"
#include <stdlib.h>

/// @brief Read the map description to get the dimensions.
///        The map must be at least 1x1.
///
/// @param map The .width and .height members will be set.
/// @param stream Stream to use.
/// @return true if success, false if error.
static bool	get_map_dimensions(t_map *map, t_stream *stream)
{
	unsigned int	x;
	unsigned int	y;

	map->width = 0;
	map->height = 0;
	y = 0;
	while (stream->str[stream->i])
	{
		x = 0;
		while (stream->str[stream->i] && stream->str[stream->i] != '\n')
		{
			stream->i++;
			x++;
		}
		if (x > map->width)
			map->width = x;
		if (stream->str[stream->i] == '\n')
			stream->i++;
		y++;
	}
	map->height = y;
	return (map->width > 0 && map->height > 0);
}

bool	get_case(t_map_case *dest, char name)
{
	int		i;
	char	tmp[2];

	i = -1;
	while (g_map_mapping[++i].name)
	{
		if (name == g_map_mapping[i].name)
		{
			*dest = g_map_mapping[i].value;
			return (true);
		}
	}
	tmp[0] = name;
	tmp[1] = '\0';
	write_err("Character '", tmp, "' unexpected\n", NULL);
	return (false);
}

void	fill_zeros(void *dest, size_t size)
{
	size_t	i;

	i = -1;
	while (++i < size)
		((char *)dest)[i] = '\0';
}

bool	read_map_description(t_map *map, t_stream *stream)
{
	t_stream		stream2;
	unsigned int	x;
	unsigned int	y;

	stream2 = *stream;
	if (!get_map_dimensions(map, &stream2))
		return (false);
	map->cases = malloc((map->width * map->height) * sizeof(t_map_case));
	y = -1;
	fill_zeros(map->cases, (map->width * map->height) * sizeof(t_map_case));
	while (++y < map->height)
	{
		x = 0;
		while (stream->str[stream->i] && stream->str[stream->i] != '\n')
		{
			if (!get_case(&map->cases[y * map->width + x],
					stream->str[stream->i]))
				return (false);
			stream->i++;
			x++;
		}
		stream->i++;
	}
	return (true);
}