#ifndef DEPTHGUIDE_IMAGE_STREAMER_IMPL_H
#define DEPTHGUIDE_IMAGE_STREAMER_IMPL_H

#include "module/image_streamer.h"
#include "codec/encoder_nvenc.h"
#include "core/async_queue.hpp"
#include "network_v3/sender_tcp.h"
#include "network_v3/sender_udp_fec.h"

#include <boost/asio/post.hpp>

using boost::asio::post;

struct image_streamer::impl {

    create_config conf;
    image_streamer *q_this = nullptr;
    io_context *ctx = nullptr;
    bool is_running = false;

    encoder_type chose_encoder_type = ENCODER_NVENC;
    std::unique_ptr<encoder_nvenc> enc_nvenc;

    // for all encoder
    bool enc_save_file = false;
    bool enc_save_length = false;
    bool enc_idr_requested = false;

    // for NvEnc
    cv::Size img_size;
    float enc_bitrate_mbps = 5.0f; // 5Mbps

    // for NvJpeg
    // TODO

    sender_type chose_sender_type = SENDER_UDP_FEC;
    std::shared_ptr<sender_base> sender;

    // for all sender
    uint16_t sender_listen_port = 5279; // make ImGui happy
    io_context *sender_ctx = nullptr;
    bool sender_enable_log = false;

    bool enable_aux_thread = true; // run sender in another thread
    std::unique_ptr<io_context> aux_ctx;

    // for UDP and UDP (FEC)
    uint16_t sender_mtu = 1500;

    // for UDP (FEC)
    float sender_parity_rate = 0.2f;

    // for auxiliary thread
    using frame_queue_type = async_queue<frame_info>;
    std::shared_ptr<frame_queue_type> frame_queue;
    std::unique_ptr<std::thread> aux_thread;

    obj_conn_type img_cb_conn;

    explicit impl(create_config _conf) {
        conf = _conf;
        ctx = conf.asio_ctx;
    }

    ~impl() {
        if (is_running) {
            stop();
        }
    }

    void show_config();

    void show();

    void start();

    void change_frame_rate(int fps);

    void stop();

    void create_encoder();

    void create_sender();

    void image_callback(obj_name_type name);

    frame_info encode_image();

    /* sender may run in the auxiliary thread,
     * because it may do complex processing in CPU */
    void aux_thread_work();

};

#endif //DEPTHGUIDE_IMAGE_STREAMER_IMPL_H