#ifndef _VK_MX_H__
#define _VK_MX_H__
#include "config.h"
#ifndef WITH_MOLTEN
#include "volk.h"
#include <SDL_vulkan.h>
#else
#include <SDL_vulkan.h>
#include <vulkan/vulkan.h>
#endif
#include "exception.hpp"
#include "util.hpp"

#include <algorithm>
#include <array>
#include <cmath>
#include <cstdlib>
#include <format>
#include <fstream>
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <glm/gtc/type_ptr.hpp>
#include <iostream>
#include <optional>
#include <set>
#include <stdexcept>
#include <vector>

#ifndef VK_CHECK_RESULT
#define VK_CHECK_RESULT(f)                                                                                                              \
    {                                                                                                                                   \
        VkResult res = (f);                                                                                                             \
        if (res != VK_SUCCESS) {                                                                                                        \
            throw mx::Exception(std::format("Fatal : VkResult is \"{}\" in {} at line {}", static_cast<int>(res), __FILE__, __LINE__)); \
        }                                                                                                                               \
    }
#endif

namespace mx {

    struct Vertex {
        float pos[3];
        float texCoord[2];
    };

    struct QueueFamilyIndices {
        std::optional<uint32_t> graphicsFamily;
        std::optional<uint32_t> presentFamily;
        bool isComplete() {
            return graphicsFamily.has_value() && presentFamily.has_value();
        }
    };

    struct SwapChainSupportDetails {
        VkSurfaceCapabilitiesKHR capabilities;
        std::vector<VkSurfaceFormatKHR> formats;
        std::vector<VkPresentModeKHR> presentModes;
    };

    struct UniformBufferObject {
        glm::vec2 iResolution;
        float time_f;
        float _pad0;
        glm::vec4 iMouse;
    };

    class VKWindow {
      public:
        VKWindow() = default;
        VKWindow(const std::string &title, int width, int height);
        virtual ~VKWindow() {}
        void initWindow(const std::string &title, int width, int height);
        void initVulkan();
        void createVertexBuffer();
        void setPath(const std::string &path);
        void loop();
        void proc();
        void cleanup();
        virtual void event(SDL_Event &e) = 0;
        void draw();
        void createGraphicsPipeline();
        VkShaderModule createShaderModule(const std::vector<char> &code);
        int w = 0, h = 0;
        mxUtil util;

      protected:
        VkInstance instance = VK_NULL_HANDLE;
        VkSurfaceKHR surface = VK_NULL_HANDLE;
        VkPhysicalDevice physicalDevice = VK_NULL_HANDLE;
        VkDevice device = VK_NULL_HANDLE;
        VkQueue graphicsQueue = VK_NULL_HANDLE;
        VkQueue presentQueue = VK_NULL_HANDLE;
        VkDescriptorSetLayout descriptorSetLayout;

        VkSwapchainKHR swapChain = VK_NULL_HANDLE;
        std::vector<VkImage> swapChainImages;
        VkFormat swapChainImageFormat;
        VkExtent2D swapChainExtent;
        std::vector<VkImageView> swapChainImageViews;
        std::vector<VkBuffer> uniformBuffers;
        std::vector<VkDeviceMemory> uniformBuffersMemory;
        std::vector<void *> uniformBuffersMapped;

        VkRenderPass renderPass = VK_NULL_HANDLE;
        VkPipelineLayout pipelineLayout = VK_NULL_HANDLE;
        VkPipeline graphicsPipeline = VK_NULL_HANDLE;
        VkPipelineLayout bgPipelineLayout = VK_NULL_HANDLE;
        VkPipeline bgPipeline = VK_NULL_HANDLE;
        std::vector<VkFramebuffer> swapChainFramebuffers;
        VkCommandPool commandPool = VK_NULL_HANDLE;
        std::vector<VkCommandBuffer> commandBuffers;
        VkSemaphore imageAvailableSemaphore = VK_NULL_HANDLE;
        VkSemaphore renderFinishedSemaphore = VK_NULL_HANDLE;

        VkBuffer vertexBuffer = VK_NULL_HANDLE;
        VkDeviceMemory vertexBufferMemory = VK_NULL_HANDLE;
        VkBuffer indexBuffer = VK_NULL_HANDLE;
        VkDeviceMemory indexBufferMemory = VK_NULL_HANDLE;
        uint32_t indexCount;

        VkImage textureImage = VK_NULL_HANDLE;
        VkDeviceMemory textureImageMemory = VK_NULL_HANDLE;
        VkImageView textureImageView = VK_NULL_HANDLE;
        VkSampler textureSampler = VK_NULL_HANDLE;

        // Background texture
        VkImage bgTextureImage = VK_NULL_HANDLE;
        VkDeviceMemory bgTextureImageMemory = VK_NULL_HANDLE;
        VkImageView bgTextureImageView = VK_NULL_HANDLE;
        VkSampler bgTextureSampler = VK_NULL_HANDLE;

        VkDescriptorPool descriptorPool = VK_NULL_HANDLE;
        std::vector<VkDescriptorSet> descriptorSets;
        std::vector<VkDescriptorSet> bgDescriptorSets;
        uint32_t width, height;
        void createDescriptorSetLayout();
        SDL_Window *window = nullptr;

        void createInstance();
        void createSurface();
        void pickPhysicalDevice();
        void createLogicalDevice();
        void createUniformBuffers();
        virtual void createSwapChain();
        void createImageViews();
        void createRenderPass();
        void createFramebuffers();
        void createCommandPool();
        void createCommandBuffers();
        void createSyncObjects();
        virtual void cleanupSwapChain();
        QueueFamilyIndices findQueueFamilies(VkPhysicalDevice device);
        VkSurfaceFormatKHR chooseSwapSurfaceFormat(const std::vector<VkSurfaceFormatKHR> &availableFormats);
        VkPresentModeKHR chooseSwapPresentMode(const std::vector<VkPresentModeKHR> &availablePresentModes);
        VkExtent2D chooseSwapExtent(const VkSurfaceCapabilitiesKHR &capabilities);
        bool isDeviceSuitable(VkPhysicalDevice device);
        SwapChainSupportDetails querySwapChainSupport(VkPhysicalDevice device);
        void createBuffer(VkDeviceSize size, VkBufferUsageFlags usage, VkMemoryPropertyFlags properties, VkBuffer &buffer, VkDeviceMemory &bufferMemory);
        uint32_t findMemoryType(uint32_t typeFilter, VkMemoryPropertyFlags properties);
        void copyBuffer(VkBuffer srcBuffer, VkBuffer dstBuffer, VkDeviceSize size);
        void createTextureImage(SDL_Surface *surface);
        void createImage(uint32_t width, uint32_t height, VkFormat format, VkImageTiling tiling, VkImageUsageFlags usage, VkMemoryPropertyFlags properties, VkImage &image, VkDeviceMemory &imageMemory);
        void transitionImageLayout(VkImage image, VkFormat format, VkImageLayout oldLayout, VkImageLayout newLayout);
        void copyBufferToImage(VkBuffer buffer, VkImage image, uint32_t width, uint32_t height);
        VkCommandBuffer beginSingleTimeCommands();
        void endSingleTimeCommands(VkCommandBuffer commandBuffer);
        void createTextureImageView();
        VkImageView createImageView(VkImage image, VkFormat format, VkImageAspectFlags aspectFlags);
        void createTextureSampler();
        void createDescriptorPool();
        void createDescriptorSets();
        void updateDescriptorSets();
        void createBackgroundDescriptorSets();
        void recreateSwapChain();
        void createBackgroundPipeline();
        void createBackgroundTextureImage(SDL_Surface *surface);
        void createBackgroundTextureImageView();
        void createBackgroundTextureSampler();
    };

} // namespace mx

#endif