#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <curses.h>

typedef struct {
    int r;
    int g;
    int b;
} RGB;

RGB newRGB(int r, int g, int b)
{
    RGB color;
    color.r = r;
    color.g = g;
    color.b = b;
    return color;
}

void calcColor(RGB* colors, int totalColors, int currentIndex, float saturation, float lightness);

int main()
{
    int totalColors = 60;
    RGB colors[totalColors];
    float saturation = 1.0;
    float lightness = 0.3;

    initscr(); // Initialize curses mode
    start_color(); // Initialize colors

    int end = totalColors - 18;
    int start = end - 42;
    for (int i = end; i >= start; i--) {
        calcColor(&colors[i], totalColors, i, saturation, lightness);

        // Convert RGB colors to curses default model
        int r = colors[i].r * 1000 / 255;
        int g = colors[i].g * 1000 / 255;
        int b = colors[i].b * 1000 / 255;

        // Set color in curses
        init_color(i, r, g, b);
        init_pair(i + 16, COLOR_BLACK, i + 16);

        // Print the color
        attron(COLOR_PAIR(i));
        printw("  ");
        attroff(COLOR_PAIR(i));
    }

    refresh(); // Update the screen
    getch(); // Wait for user input

    endwin(); // End curses mode
    return 0;
}

void calcColor(RGB* colors, int totalColors, int currentIndex, float saturation, float lightness)
{
    float hue = currentIndex * (360.0 / totalColors);
    float chroma = (1 - fabs(2 * lightness - 1)) * saturation;
    float x = chroma * (1 - fabs(fmod(hue / 60, 2) - 1));
    float m = lightness - chroma / 2;

    float r, g, b;
    if (hue >= 0 && hue < 60) {
        r = chroma;
        g = x;
        b = 0;
    } else if (hue >= 60 && hue < 120) {
        r = x;
        g = chroma;
        b = 0;
    } else if (hue >= 120 && hue < 180) {
        r = 0;
        g = chroma;
        b = x;
    } else if (hue >= 180 && hue < 240) {
        r = 0;
        g = x;
        b = chroma;
    } else if (hue >= 240 && hue < 300) {
        r = x;
        g = 0;
        b = chroma;
    } else {
        r = chroma;
        g = 0;
        b = x;
    }

    colors->r = (r + m) * 255;
    colors->g = (g + m) * 255;
    colors->b = (b + m) * 255;
}