/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_find_player_position.c                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: fgras-ca <fgras-ca@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/01/23 19:54:51 by fgras-ca          #+#    #+#             */
/*   Updated: 2024/01/23 20:22:20 by fgras-ca         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "../cub3d.h"

static void	initialize_variables(int *i, int *line_number, int *column_number, bool *found_player)
{
	*i = 0;
	*line_number = 0;
	*column_number = 0;
	*found_player = false;
}

static bool check_for_player(char current_char, bool *found_player)
{
	if (current_char == 'N' || current_char == 'S' || current_char == 'E' || current_char == 'W')
	{
		if (*found_player)
		{
			printf("Multiple player start positions found. Invalid map.\n");
			return false;
		}
		*found_player = true;
	}
	return true;
}

static void update_player_info(t_structure_map *map_info, int line_number, int column_number, char player_direction)
{
    map_info->player_x = column_number * map_info->mapS + map_info->mapS / 2;
    map_info->player_y = line_number * map_info->mapS + map_info->mapS / 2;
    map_info->player_direction = player_direction;
    printf("Player found: x = %f, y = %f, direction = %c\n", map_info->player_x, map_info->player_y, map_info->player_direction);
}


static void	update_position(char current_char, int *line_number, int *column_number)
{
	if (current_char == '\n')
	{
		(*line_number)++;
		*column_number = 0;
	}
	else
	{
		(*column_number)++;
	}
}

static bool check_for_multiple_players(bool found_player)
{
    if (found_player)
    {
        printf("Multiple player start positions found. Invalid map.\n");
        return false;
    }
    return true;
}

bool find_player_position_and_direction(const char *map_content, int length, t_structure_map *map_info)
{
    int i;
    int line_number;
    int column_number;
    bool found_player;

    initialize_variables(&i, &line_number, &column_number, &found_player);
    while (i < length)
    {
        char current_char = map_content[i];
        if (!found_player && (current_char == 'N' || current_char == 'S' || current_char == 'E' || current_char == 'W'))
        {
            if (check_for_multiple_players(found_player))
            {
                found_player = true;
                update_player_info(map_info, line_number, column_number, current_char);
            }
            else
            {
                return false;
            }
        }
        calculate_map(map_info);
        update_position(current_char, &line_number, &column_number);
        i++;
    }
    if (!found_player)
    {
        printf("Player start position not found. Invalid map.\n");
        return false;
    }
    return true;
}