#include "GUI_Window.hpp"
#include "Image.hpp"
#include "Statusbar.hpp"
#include "GUI.hpp"


/** GUI_run
 *  The GUI_run-function starts all functions needed for the GUI.
 */

int redrawInterval;
int width;
int height;

static void redrawCallback(void * pointer);
static void refreshCallback(void * pointer);

int GUI_run(int argc, char **argv) {
    vkvm::initialize(0);
    width = vkvm::getWidth();
    height = vkvm::getHeight();
    redrawInterval = vkvm::getRedrawInterval();
    char *resolution = get_resolution(width, height);
    std::cout << resolution << std::endl;
    auto *window = new GUI_Window(width, height + 30, "vKVM GUI");

    Statusbar *status[5];

    window->begin();
    auto *image = new Image(0, 30, width, height);

    status[0] = new Statusbar(0, 0, 300, 30, resolution);
    status[1] = new Statusbar(300, 0, 170, 30, "Event:");
    status[2] = new Statusbar(470, 0, 200, 30, "Mouse Position:");
    vkvm::registerEvent(vkvm::EventType::Redraw, [image]() {
        image->getPixels();
        image->redraw();
    });
    vkvm::registerEvent(vkvm::EventType::UpdateControlRegisters, [image, window, status]() {
        int newRedrawInterval = vkvm::getRedrawInterval();
        if(newRedrawInterval != redrawInterval) {
            redrawInterval = newRedrawInterval;
        }

        int newWidth = vkvm::getWidth();
        int newHeight = vkvm::getHeight();

        if(newWidth != width || newHeight != height) {
            width = newWidth;
            height = newHeight;
            window->size(width, height + 30);
            image->size(width, height);
            status[0]->label(get_resolution(width, height));

            window->redraw();
        }
    });

    Fl::repeat_timeout((double) redrawInterval / 1000, refreshCallback, image);
    window->end();
    window->show(argc, argv);
    return Fl::run();
}

static void refreshCallback(void * pointer) {
    auto *image = static_cast<Image*>(pointer);
    image->getPixels();

    Fl::repeat_timeout((double) redrawInterval / 1000, redrawCallback, image);
}

static void redrawCallback(void * pointer) {
    auto *image = static_cast<Image*>(pointer);
    image->redraw();
    refreshCallback(image);
}