#pragma once

#include <forstio/id.hpp>
#include <forstio/async/async.hpp>

#include <forstio/codec/data.hpp>
#include <forstio/codec/interface.hpp>

#include <variant>

#include "transfer.hpp"

namespace saw {
/**
 * This class acts as a helper for rpc calls and representing data on the remote.
 */
template<typename T, typename Encoding>
class data_or_id {
private:
	/**
	 * Variant representing the either id or data class.
	 */
	std::variant<id<T>, data<T,Encoding>> doi_;
public:
	/**
	 * Constructor for instantiating.
	 */
	data_or_id(const id<T>& val):
		doi_{val}
	{}

	/**
	 * Constructor for instantiating.
	 */
	data_or_id(data<T,Encoding> val):
		doi_{std::move(val)}
	{}

	/**
	 * Check if this class holds an id.
	 */
	bool is_id() const {
		return std::holds_alternative<id<T>>(doi_);
	}

	/**
	 * Check if this class holds data.
	 */
	bool is_data() const {
		return std::holds_alternative<data<T,Encoding>>(doi_);
	}

	/**
	 * Returns the id.
	 */
	id<T> get_id() const {
		return std::get<id<T>>(doi_);
	}

	/**
	 * Return a data reference.
	 */
	data<T,Encoding>& get_data(){
		return std::get<data<T,Encoding>>(doi_);
	}

	/**
	 * Return a data reference.
	 */
	const data<T,Encoding>& get_data() const {
		return std::get<data<T,Encoding>>(doi_);
	}
};


/**
 * Representing data on the remote
 */
template<typename T, typename Encoding, typename Remote>
class remote_data;

template<typename Iface, typename Encoding, typename Remote>
class rpc_client;

/**
 * Implementation of a remote server on the backend
 */
template<typename Iface, typename Encoding, typename Remote>
class rpc_server {
private:
	interface<Iface, Encoding> iface_;
public:
	rpc_server(interface<Iface, Encoding> iface):
		iface_{std::move(iface)}
	{}
};

/**
 * Representation of a remote.
 * Partially similar to a network address
 */
template<typename Remote>
class remote_address {
	static_assert(always_false<Remote>, "Type of remote not supported");
	/**
	 *
	 */
};

/**
 * Reference Backend structure
 */
template<typename Remote>
class remote {
	static_assert(always_false<Remote>, "Type of backend not supported");
};
}