#ifndef DEPTHGUIDE_IMAGE_VIEWER_H
#define DEPTHGUIDE_IMAGE_VIEWER_H

#include "core/object_manager.h"
#include "render/render_utility.h"

#include <boost/container/static_vector.hpp>

#include <memory>

enum image_viewer_mode {
    VIEW_COLOR_ONLY,
    VIEW_DEPTH_ONLY,
    VIEW_COLOR_DEPTH,
    VIEW_STEREO,
    VIEW_CUSTOM
};

class image_viewer {
public:

    struct create_config {
        static constexpr auto max_custom_size = 2;

        image_viewer_mode mode = VIEW_COLOR_DEPTH;
        bool flip_y = false;
        smart_cuda_stream *stream = nullptr;
        union {
            struct {
                color_format fmt;
                obj_name_type name;
            } color;
            struct {
                obj_name_type name;
            } depth;
            struct {
                color_format c_fmt;
                obj_name_type c_name, d_name;
            } color_depth;
            struct {
                color_format c_fmt;
                obj_name_type left_name, right_name;
            } stereo;
        } extra = {};

        struct {
            struct item_type {
                using render_func_type = std::function<void()>;
                std::string name;
                render_func_type render_func;
            };
            using item_list_type =
                    boost::container::static_vector<item_type, max_custom_size>;
            item_list_type item_list;
        } custom;
    };

    explicit image_viewer(create_config conf);

    ~image_viewer();

    void show();

    void render();

private:
    struct impl;
    std::unique_ptr<impl> pimpl;
};

#endif //DEPTHGUIDE_IMAGE_VIEWER_H