// =============================================
//  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 <fmt/format.h>

// Macros that can collide with functions.
#if defined(max)
#undef max
#endif

#if defined(min)
#undef min
#endif

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

#include <vulkan/vulkan.hpp>

constexpr u32 ASTER_API_VERSION = vk::ApiVersion13;

#define CODE_LOC " @ " __FILE__ ":" VULKAN_HPP_STRINGIFY(__LINE__)

[[nodiscard]] inline bool
failed(const vk::Result result)
{
    return result != vk::Result::eSuccess;
}

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 *
toCstr(const T &val)
{
    static std::string buffer;
    buffer = vk::to_string(val);
    return buffer.c_str();
}

using NameString = eastl::fixed_string<char, 32, false>;

// 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
getVkHandle(const T &vkHandle) noexcept
{
    return reinterpret_cast<u64>(cast<T::CType>(vkHandle));
}

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
hashAny(const T &val)
{
    return std::hash<std::remove_cvref_t<T>>()(val);
}

[[nodiscard]] inline usize
hashCombine(const usize hash0, const usize hash1)
{
    constexpr usize saltValue = 0x9e3779b9;
    return hash0 ^ (hash1 + saltValue + (hash0 << 6) + (hash0 >> 2));
}

struct Time
{
    static constexpr f64 c_MaxDelta = 0.1;

    inline static f64 m_Elapsed{Qnan<f64>};
    inline static f64 m_Delta{Qnan<f64>};

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

    static void
    Update()
    {
        ERROR_IF(std::isnan(m_Elapsed), "Time not init.");
        const auto newElapsed = glfwGetTime();
        m_Delta = std::clamp(newElapsed - m_Elapsed, 0.0, c_MaxDelta);
        m_Elapsed = newElapsed;
    }
};

[[nodiscard]] inline usize
closestMultiple(const usize val, const usize of)
{
    return of * ((val + of - 1) / of);
}

template <>
struct fmt::formatter<vk::Result> : nested_formatter<std::string>
{
    auto
    // ReSharper disable once CppInconsistentNaming
    format(vk::Result result, format_context &ctx) const
    {
        return write_padded(ctx,
                            [this, result](auto out) { return v10::format_to(out, "{}", nested(to_string(result))); });
    }
};

template <typename T, usize N, bool B>
struct fmt::formatter<eastl::fixed_string<T, N, B>> : nested_formatter<cstr>
{
    auto
    // ReSharper disable once CppInconsistentNaming
    format(const eastl::fixed_string<T, N, B> &str, format_context &ctx) const
    {
        return write_padded(ctx, [this, str](auto out) { return v10::format_to(out, "{}", nested(str.c_str())); });
    }
};