// =============================================
//  Aster: global.h
//  Copyright (c) 2020-2024 Anish Bhobe
// =============================================

#pragma once

#include "config.h"
#include "constants.h"
#include "logger.h"

#include <GLFW/glfw3.h>
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <string>

#define VULKAN_HPP_ASSERT(expr) DEBUG_IF(!(expr), "Vulkan assert failed")
#include <vk_mem_alloc.h>
#include <vulkan/vulkan.hpp>

#define CODE_LOC " @ " __FILE__ ":" VULKAN_HPP_STRINGIFY(__LINE__)
[[nodiscard]] inline bool failed(const vk::Result _result) {
	return _result != vk::Result::eSuccess;
}

namespace std {
namespace impl {
string format(const char *_fmt, ...);
}

template <typename... Ts>
[[nodiscard]] string fmt(const char *_fmt, Ts &&..._args) {
	return impl::format(_fmt, forward<Ts>(_args)...);
}
} // namespace std

template <typename T>
concept IsVkEnum = requires(T _t) {
	{ std::is_enum_v<T> };
	{ vk::to_string(_t) } -> std::same_as<std::string>;
};

template <typename T>
requires IsVkEnum<T> [[nodiscard]] const char *to_cstr(const T &_val) {
	static std::string buffer;
	buffer = vk::to_string(_val);
	return buffer.c_str();
}

// TODO: Check why inline namespaces aren't working in MSVC 19.27.29110
using namespace std::literals::string_literals;
using namespace std::literals::string_view_literals;

template <typename T>
requires vk::isVulkanHandleType<T>::value [[nodiscard]] constexpr u64
get_vk_handle(const T &_vk_handle) noexcept {
	return reinterpret_cast<u64>(cast<T::CType>(_vk_handle));
}

template <typename F>
struct std::hash<vk::Flags<F>> {
	[[nodiscard]] usize operator()(const vk::Flags<F> &_val) {
		return std::hash<u32>()(cast<u32>(_val));
	}
};

template <typename T>
[[nodiscard]] usize hash_any(const T &_val) {
	return std::hash<std::remove_cvref_t<T>>()(_val);
}

[[nodiscard]] inline usize hash_combine(const usize _hash0,
		const usize _hash1) {
	constexpr usize salt_value = 0x9e3779b9;
	return _hash0 ^ (_hash1 + salt_value + (_hash0 << 6) + (_hash0 >> 2));
}

struct Time {
	static constexpr f64 max_delta = 0.1;

	inline static f64 elapsed{ qnan<f64> };
	inline static f64 delta{ qnan<f64> };

	static void init() {
		WARN_IF(!std::isnan(elapsed), "Time already init.");
		elapsed = glfwGetTime();
		delta = 1.0 / 60.0;
	}

	static void update() {
		ERROR_IF(std::isnan(elapsed), "Time not init.");
		const auto new_elapsed = glfwGetTime();
		delta = std::clamp(new_elapsed - elapsed, 0.0, max_delta);
		elapsed = new_elapsed;
	}
};

[[nodiscard]] inline usize closest_multiple(const usize _val, const usize _of) {
	return _of * ((_val + _of - 1) / _of);
}