#pragma once

#include <GLFW/glfw3.h>

#include <iostream>
#include <vector>
#include <cstring>
#include <optional>
#include <set>
#include <fstream>
#include <numeric>
#include <chrono>
#include <array>
#include <memory>
#include <vulkan/vulkan_core.h>

class Instance;
class Swapchain;
class Pipeline;
class Buffer;
class CommandPool;
class Image;
class ComputePipeline;

class Timer {
public:
	explicit Timer(){
		start = std::chrono::system_clock::now();
	}
	~Timer(){
		size_t nanoseconds = (std::chrono::system_clock::now() - start).count();
		printf("Timer: %zu mus\n", nanoseconds / 1000);
	}
private:
	std::chrono::time_point<std::chrono::system_clock> start;
};

class Application {
public:
	explicit Application();
	void mainLoop();
	~Application();
private:
	Swapchain* swapchain = nullptr;
	Pipeline* graphicsPipeline = nullptr;
	Buffer* vertexBuffer = nullptr;
	Buffer* indexBuffer = nullptr;
	Buffer* uniformBuffer = nullptr;

	ComputePipeline* computePipeline = nullptr;

	void updateUniformBuffer();

	void recordCommandBuffer(VkCommandBuffer commandBuffer, uint32_t imageIndex);
	void recordComputeCommandBuffer();

	VkSemaphore imageAvailableSemaphore = VK_NULL_HANDLE;
	VkSemaphore renderFinishedSemaphore = VK_NULL_HANDLE;
	VkSemaphore computeFinishedSemaphore = VK_NULL_HANDLE;
	VkFence renderInFlightFence = VK_NULL_HANDLE;
	VkFence computeInFlightFence = VK_NULL_HANDLE;

	void drawFrame();
	void update();
	void createSyncObjects();
};