#ifndef DEPTHGUIDE_FRAG_BASE_HPP
#define DEPTHGUIDE_FRAG_BASE_HPP

#include "../impl_utility.hpp"

#include <boost/signals2.hpp>

class frag_base : public data_channel {
public:
    struct create_config {
        data_channel_type low_channel;
        size_t queue_size = 1; // max incomplete messages in queue, >= 1
    };

    explicit frag_base(create_config conf) {
        low = std::move(conf.low_channel);
        q_size = conf.queue_size;

        low->set_recv_func([this](auto data) { append_data(data); });
    }

    size_t header_size() const override { return 0; }

    using signal_type = boost::signals2::signal<void()>;
    signal_type sig_msg_loss;

protected:

    data_channel_type low;
    size_t q_size = 0;

    virtual void append_data(const data_type &data) = 0;
};

#endif //DEPTHGUIDE_FRAG_BASE_HPP