// =============================================
//  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_API_VERSION_1_3;

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

#define FORCE_TODO static_assert(false)

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

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

template <typename TFlagBits>
struct std::hash<vk::Flags<TFlagBits>> // NOLINT(*-dcl58-cpp)
{
    [[nodiscard]] usize
    operator()(const vk::Flags<TFlagBits> &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;
    const usize tempVar = hash1 + saltValue + (hash0 << 6) + (hash0 >> 2);
    return hash0 ^ tempVar;
}

struct Time
{
    static constexpr f64 cMaxDelta = 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, cMaxDelta);
        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 TType, usize TCount, bool TOverflow>
struct fmt::formatter<eastl::fixed_string<TType, TCount, TOverflow>> : nested_formatter<cstr>
{
    auto
    // ReSharper disable once CppInconsistentNaming
    format(const eastl::fixed_string<TType, TCount, TOverflow> &str, format_context &ctx) const
    {
        return write_padded(ctx, [this, str](auto out) { return v10::format_to(out, "{}", nested(str.c_str())); });
    }
};