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#pragma once

#include "resources/buffer.h"
#include "resources/image.h"
#include <memory>
#include <vulkan/vulkan_core.h>
#include <vulkan/vk_enum_string_helper.h>
#include <vk_mem_alloc.h>
#include <spdlog/spdlog.h>

#include <cstdint>
#include <vector>
#include <string>

#define CHECK_VULKAN(result)                                                    \
    do {                                                                        \
        VkResult res = result;                                                  \
        if (res != VK_SUCCESS) {                                                \
            spdlog::error("Vulkan error: {}", string_VkResult(res));            \
            abort();                                                            \
        }                                                                       \
    } while (0)                                                

namespace iris {

struct Buffer_t {
    VkBuffer buffer;
    VkDevice device;
    VmaAllocator allocator;
    VmaAllocation allocation;
    VkBufferUsageFlags flags;
    VkDeviceSize size;
    void *mapped_data = nullptr;

    void* map();
    void unmap();
    void release();
    ~Buffer_t() { release(); }
};

typedef std::shared_ptr<Buffer_t> Buffer;

struct Texture2D_t {
    VkImage image;
    VkDevice device;
    VmaAllocator allocator;
    VmaAllocation allocation;
    VkImageView image_view;
    VkImageLayout layout;

    VkImageUsageFlags flags;
    VkExtent2D extent;

    void release();
    ~Texture2D_t() { release(); }
};

typedef std::shared_ptr<Texture2D_t> Texture2D;

// This is a really brute-force implementation, 
// every command pool contains only 1 command buffer
struct CommandBuffer {
    VkDevice device;
    VkCommandPool pool;
    VkCommandBuffer buffer;
    VkFence fence;
    VkQueue queue;
    
    CommandBuffer(VkDevice device, uint32_t queue_family_index, VkQueue queue);
    void release();
    void begin(VkCommandBufferUsageFlags flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT);
    void submit_sync();
    ~CommandBuffer() { release(); }
};

struct Device {
    VkInstance instance;
    VkPhysicalDevice physical_device;
    VkDevice device;
    uint32_t main_queue_family_index;
    VkQueue graphics_queue;
    VmaAllocator allocator;
#ifdef USE_VULKAN_VALIDATION_LAYERS
    VkDebugReportCallbackEXT debugReportCallback;
    VkDebugUtilsMessengerEXT debugUtilsMessenger;
#endif

    Device() = delete;
    Device(
        std::vector<std::string> layers,
        std::vector<std::string> instance_extensions);
    void destroy();

    Buffer create_buffer(
        VkDeviceSize size,
        VkBufferUsageFlags usage,
        VmaAllocationCreateInfo create_info = {
            .usage = VMA_MEMORY_USAGE_AUTO,
        });

    Texture2D create_texture(
        VkExtent2D extent,
        VkFormat format,
        VkImageUsageFlags usage,
        VmaAllocationCreateInfo create_info = {
            .usage = VMA_MEMORY_USAGE_AUTO,
        });

    Texture2D create_texture_from_image(
        const char* filename,
        VkFormat format,
        VkImageUsageFlags usage,
        VmaAllocationCreateInfo create_info = {
            .usage = VMA_MEMORY_USAGE_AUTO,
        });

    std::shared_ptr<Buffer_tt> create_buffer(
        BufferDesc desc);
    
    std::shared_ptr<Image_tt> create_image(
        ImageDesc desc);

    CommandBuffer create_command_buffer();
};

} // namespace iris