/*
Crafter®.Graphics
Copyright (C) 2025 Catcrafts®
Catcrafts.net

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3.0 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
*/

#include <vulkan/vulkan.h>
#include <vulkan/vulkan_wayland.h>

export module Crafter.Graphics:VulkanDevice;
import std;

export namespace Crafter {
    /**
    * @brief Static class for initizializing and holding various vulkan handles.
    */
    class VulkanDevice {
        public:
        inline static VkInstance instance = VK_NULL_HANDLE;
        inline static VkDebugUtilsMessengerEXT debugMessenger = VK_NULL_HANDLE;
        inline static VkPhysicalDevice physDevice = VK_NULL_HANDLE;
        inline static VkDevice device = VK_NULL_HANDLE;
        inline static std::uint32_t queueFamilyIndex = 0;
        inline static VkQueue queue = VK_NULL_HANDLE;
        inline static VkCommandPool commandPool = VK_NULL_HANDLE;
        inline static VkSwapchainKHR swapchain = VK_NULL_HANDLE;
        inline static PFN_vkCmdDrawMeshTasksEXT vkCmdDrawMeshTasksEXTProc;
        inline static PFN_vkCmdBeginRenderingKHR vkCmdBeginRenderingKHRProc;
        inline static PFN_vkCmdEndRenderingKHR vkCmdEndRenderingKHRProc;
        inline static VkPhysicalDeviceMemoryProperties memoryProperties;
        inline static VkFormat depthFormat = VK_FORMAT_UNDEFINED;
        /**
        * @brief Creates the vulkan device, this must be called before any use of vulkan.
        */
        static void CreateDevice();
        /**
        * @brief Checks if result is VK_SUCCESS.
        * @param result The VkResult to check.
        * @throws std::runtime_error If result != VK_SUCCESS. 
        */
        static void CHECK_VK_RESULT(VkResult result);
        /**
        * @brief Finds a suitable memory type index for the device based on required properties.
        * 
        * This function searches through the memory types supported by the physical device to find
        * a memory type index that matches the specified bitmask and has the requested property flags.
        * 
        * @param typeBits A bitmask representing the memory types that are suitable. Each bit corresponds
        *                 to a memory type index; if the bit is set, that memory type is considered.
        * @param properties A bitmask of VkMemoryPropertyFlags specifying the desired memory properties,
        *                   such as device local, host visible, etc.
        * 
        * @return The index of a suitable memory type that fulfills the requirements.
        * 
        * @throws std::runtime_error If no suitable memory type is found matching the criteria.       
        */
        static std::uint32_t GetMemoryType(std::uint32_t typeBits, VkMemoryPropertyFlags properties);
    };
}