#pragma once

#include <array>
#include <tuple>
#include <hyprutils/signal/Signal.hpp>
#include <hyprutils/math/Region.hpp>
#include "../misc/Attachment.hpp"

namespace Aquamarine {
    enum eBufferCapability : uint32_t {
        BUFFER_CAPABILITY_NONE    = 0,
        BUFFER_CAPABILITY_DATAPTR = (1 << 0),
    };

    enum eBufferType : uint32_t {
        BUFFER_TYPE_DMABUF = 0,
        BUFFER_TYPE_SHM,
        BUFFER_TYPE_MISC,
    };

    struct SDMABUFAttrs {
        bool                      success = false;
        Hyprutils::Math::Vector2D size;
        uint32_t                  format   = 0; // fourcc
        uint64_t                  modifier = 0;

        int                       planes  = 1;
        std::array<uint32_t, 4>   offsets = {0};
        std::array<uint32_t, 4>   strides = {0};
        std::array<int, 4>        fds     = {-1, -1, -1, -1};
    };

    struct SSHMAttrs {
        bool                      success = false;
        int                       fd      = 0;
        uint32_t                  format  = 0;
        Hyprutils::Math::Vector2D size;
        int                       stride = 0;
        int64_t                   offset = 0;
    };

    class IBuffer {
      public:
        virtual ~IBuffer() {
            attachments.clear();
        };

        virtual eBufferCapability                      caps()                                         = 0;
        virtual eBufferType                            type()                                         = 0;
        virtual void                                   update(const Hyprutils::Math::CRegion& damage) = 0;
        virtual bool                                   isSynchronous() = 0; // whether the updates to this buffer are synchronous, aka happen over cpu
        virtual bool                                   good()          = 0;
        virtual SDMABUFAttrs                           dmabuf();
        virtual SSHMAttrs                              shm();
        virtual std::tuple<uint8_t*, uint32_t, size_t> beginDataPtr(uint32_t flags);
        virtual void                                   endDataPtr();
        virtual void                                   sendRelease();
        virtual void                                   lock();
        virtual void                                   unlock();
        virtual bool                                   locked();

        Hyprutils::Math::Vector2D                      size;
        bool                                           opaque          = false;
        bool                                           lockedByBackend = false;

        CAttachmentManager                             attachments;

        struct {
            Hyprutils::Signal::CSignalT<> destroy;
            Hyprutils::Signal::CSignalT<> backendRelease;
        } events;

      private:
        int locks = 0;
    };

};