#include "../SDLHelpers.h"

#include <string>

using namespace std;

#include <SDL3/SDL.h>
#include <SDL3_ttf/SDL_ttf.h>

#include "Checkbox.h"

bool isBetween(float a, float b, float c) {
    return a >= b && a < c;
}

Checkbox::Checkbox(string text, SDL_Color color, SDL_Rect pos) : Button(text, color, pos) {
    //SDL_Color color;
    //Button::Button(text, color, pos);
    toggle_selected = true;
    // Parent Button doesn't seem to call this but it's own drawButton. So doing it again for here. FIXME how to fix?
    SDL_DestroySurface(button_up);
    SDL_DestroySurface(button_down);
    drawButton();
    selectSurface();
}

Checkbox::~Checkbox() {
}

void Checkbox::drawButton() {
    SDL_Color color_reflection = color;
    SDL_Color color_shadow = color;
    color_reflection.r = (int) color_reflection.r + 50 < 255 ? color_reflection.r + 50 : 255;
    color_reflection.g = (int) color_reflection.g + 50 < 255 ? color_reflection.g + 50 : 255;
    color_reflection.b = (int) color_reflection.b + 50 < 255 ? color_reflection.b + 50 : 255;
    color_shadow.r = (int) color_shadow.r - 50 > 0 ? color_shadow.r - 50 : 0;
    color_shadow.g = (int) color_shadow.g - 50 > 0 ? color_shadow.g - 50 : 0;
    color_shadow.b = (int) color_shadow.b - 50 > 0 ? color_shadow.b - 50 : 0;

    int w = getPos()->w;
    int h = getPos()->h;
    button_up = SDL_CreateSurface(w, h, SDL_GetPixelFormatForMasks(32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000));
    button_down = SDL_CreateSurface(w, h, SDL_GetPixelFormatForMasks(32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000));
    Uint32 *p_up = (Uint32 *) button_up->pixels;
    Uint32 *p_down = (Uint32 *) button_down->pixels;
    SDL_Color color_up;
    SDL_Color color_down;
    for (int y = 0; y < h; y++) {
        for (int x = 0; x < w; x++) { // checkbox needs to be square so using height
            float u = h / 12.0; // one unit (was 1 pixel in example image)
            color_up.a = 0xff;
            color_down.a = 0xff;
            if (x > h) {
                color_up.a = 0;
                color_down.a = 0;
            } else if (isBetween(y, h - u, h) || isBetween(x, h - u, h)) { // reflection
                color_up.r = 0xd4;
                color_up.g = 0xd0;
                color_up.b = 0xc8;
                color_down = color_up;
            } else if (isBetween(y, 0, u) || isBetween(x, 0, u)) { // lighter shadow
                color_up.r = 0x80;
                color_up.g = 0x80;
                color_up.b = 0x80;
                color_down = color_up;
            } else if (isBetween(y, u, u * 2) || isBetween(x, u, u * 2)) { // darker shadow
                color_up.r = 0x40;
                color_up.g = 0x40;
                color_up.b = 0x40;
                color_down = color_up;
            } else {
                color_up.r = 255;
                color_up.g = 255;
                color_up.b = 255;
                color_down = color_up;
                bool x_cond = isBetween(x, u * 3, 10 * u);
                bool y_cond = isBetween(y, x + u * 1.5, x + u * 4.5);
                float x_change_limit = 5.5 * u;
                if (x >= x_change_limit) {
                    unsigned remaining_x = (x - x_change_limit);
                    y_cond = isBetween(y, u * 7 - remaining_x, u * 10 - remaining_x);
                }
                if (x_cond && y_cond) {
                    color_down.r = 0;
                    color_down.g = 0;
                    color_down.b = 0;
                }
            }
            *p_up = SDL_MapRGBA(SDL_GetPixelFormatDetails(button_up->format), NULL, color_up.r, color_up.g, color_up.b, color_up.a);
            *p_down = SDL_MapRGBA(SDL_GetPixelFormatDetails(button_down->format), NULL, color_down.r, color_down.g, color_down.b, color_down.a);
            p_up++;
            p_down++;
        }
    }

    SDL_Color text_color = {0, 0, 0};
    vector<string> fonts;
    fonts.push_back("DejaVuSans.ttf");
    fonts.push_back("ariblk.ttf");
    fonts.push_back("FreeSans.ttf");
    fonts.push_back("arial.ttf");
    TTF_Font *font = openFont(fonts, 10);
    SDL_Surface *text_surface;
    if (!font) {
        SDL_Log("TTF_OpenFont is broken!");
    }
    if(!(text_surface = TTF_RenderText_Blended(font, text.c_str(), text.length(), text_color))) {
        SDL_Log("RenderText failed %s", SDL_GetError());
    }
    SDL_Rect pos;
    pos.x = button_up->h + 8;
    pos.y = button_up->h / 2 - text_surface->h / 2;
    SDL_BlitSurface(text_surface, NULL, button_up, &pos);
    SDL_BlitSurface(text_surface, NULL, button_down, &pos);
    SDL_DestroySurface(text_surface);
    TTF_CloseFont(font);
}