#include <SFML/Graphics.hpp>
#include <iostream>
#include <fstream>

const char* tabel = "$@B\%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\\|()1{}[]?-_+~<>i!lI;:,\"^`'. ";
const double length = 70.f;
const double mod = 256.f/length;

int main()
{
    std::string file;
    std::cout << "Input Name Of A File: ";
    std::cin >> file;
    std::cout << std::endl;

    sf::Image texture;
    if (!texture.loadFromFile(file))
    {
        std::cout << "Uh Oh! " << file << " Was Not Found. :(" << std::endl;
        return EXIT_FAILURE;
    } else
    {
        std::cout << "Thank You! " << file << " Was Found!" << std::endl;
    }

    std::ofstream output;
    std::string outName = file + ".txt";
    output.open(outName);
    if(!output.is_open())
    {
        std::cout << outName  << " Was Not Able To Open. :(";
        return EXIT_FAILURE;
    } else
    {
        std::cout << outName  << " Was Able To Open!" << std::endl;
    }

    for(int y = 0; y < texture.getSize().y; y++)
    {
        for(int x = 0; x < texture.getSize().x; x++)
        {
            double r = texture.getPixel(x,y).r;
            double g = texture.getPixel(x,y).g;
            double b = texture.getPixel(x,y).b;

            // According To Wiki Grayscale
            // en.wikipedia.org/wiki/Grayscale
            double avg = .2126f * r +
                        .7152f * g +
                        .0722f * b;

            int color = (int)(avg/mod);
            char print = tabel[color];

            output << print << print;
        }
        output << std::endl;
    }

    output.close();

    return EXIT_SUCCESS;
}