#include <stdlib.h>
#include <ptk.h>
#include <ptk_log.h>

#include <GLFW/glfw3.h>

static const float color_step = 10.0f;

static PtkRect *r;

static void on_press(const int button, const int action, const int mods) {
    (void)button; (void)mods;
    if (action == GLFW_PRESS) {
        PTK_DEBUG("pressed!");
        r->color.b += color_step / 255.0f;
        if (r->color.b > 1.0f) {
            r->color.b = 0.0f;

            r->color.g += color_step / 255.0f;
            if (r->color.g > 1.0f) {
                r->color.g = 0.0f;

                r->color.r += color_step / 255.0f;
                if (r->color.r > 1.0f) {
                    r->color.r = 0.0f;
                }
            }
        }
    }
}

int main(void) {
    if (!ptk_init(800, 600, "button", (PtkVersion){ .major = 0, .minor = 1, .patch = 0 })) {
        return EXIT_FAILURE;
    }

    r = (PtkRect *)ptk_rect(
        (PtkPos){ .x = 100.0f, .y = 100.0f },
        (PtkSize){ .w = 100.0f, .h = 50.0f },
        (PtkColor){ .r = 1.0f, .g = 1.0f, .b = 1.0f }
    );

    return ptk_run(
        ptk_clickable((PtkHandle)r, on_press)
    );
}