#pragma once

#include <stdio.h>

#include <memory>
#include <iostream>

#if defined(_WIN32)
#include <fcntl.h>
#define NOMINMAX
#include <windows.h>
#endif // _WIN32

#if defined(__linux__) || defined(__APPLE__)
#include <dlfcn.h>
#endif

#define GLFW_INCLUDE_VULKAN
#include "GLFW/glfw3.h"

#include "../src/VkBootstrap.h"
#include "../src/VkSwapchainManager.h"

const int default_window_width = 512;
const int default_window_height = 512;

GLFWwindow* create_window_glfw(const char* window_name = "", bool resize = true) {
	glfwInit();
	glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
	glfwWindowHint(GLFW_RESIZABLE, resize ? GLFW_TRUE : GLFW_FALSE);

	return glfwCreateWindow(default_window_width, default_window_height, window_name, NULL, NULL);
}
void destroy_window_glfw(GLFWwindow* window) {
	glfwDestroyWindow(window);
	glfwTerminate();
}
VkSurfaceKHR create_surface_glfw(VkInstance instance, GLFWwindow* window, VkAllocationCallbacks* allocator = nullptr) {
	VkSurfaceKHR surface = VK_NULL_HANDLE;
	VkResult err = glfwCreateWindowSurface(instance, window, allocator, &surface);
	if (err) {
		const char* error_msg;
		int ret = glfwGetError(&error_msg);
		if (ret != 0) {
			std::cout << ret << " ";
			if (error_msg != nullptr) std::cout << error_msg;
			std::cout << "\n";
		}
		surface = VK_NULL_HANDLE;
	}
	return surface;
}

struct VulkanLibrary {
#if defined(__linux__) || defined(__APPLE__)
	void* library;
#elif defined(_WIN32)

	HMODULE library;
#endif

	VulkanLibrary() {
#if defined(__linux__)
		library = dlopen("libvulkan.so.1", RTLD_NOW | RTLD_LOCAL);
		if (!library) library = dlopen("libvulkan.so", RTLD_NOW | RTLD_LOCAL);
#elif defined(__APPLE__)
		library = dlopen("libvulkan.dylib", RTLD_NOW | RTLD_LOCAL);
		if (!library) library = dlopen("libvulkan.1.dylib", RTLD_NOW | RTLD_LOCAL);
#elif defined(_WIN32)
		library = LoadLibrary(TEXT("vulkan-1.dll"));
#else
		assert(false && "Unsupported platform");
#endif
		if (!library) return;
#if defined(__linux__) || defined(__APPLE__)
		vkGetInstanceProcAddr = reinterpret_cast<PFN_vkGetInstanceProcAddr>(dlsym(library, "vkGetInstanceProcAddr"));
#elif defined(_WIN32)
		vkGetInstanceProcAddr = reinterpret_cast<PFN_vkGetInstanceProcAddr>(GetProcAddress(library, "vkGetInstanceProcAddr"));
#endif
	}

	void close() {
#if defined(__linux__) || defined(__APPLE__)
		dlclose(library);
#elif defined(_WIN32)
		FreeLibrary(library);
#endif
		library = 0;
	}

	PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = VK_NULL_HANDLE;
};