#ifndef _FG_UGEAR_COMMAND_HXX
#define _FG_UGEAR_COMMAND_HXX


#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#include <simgear/compiler.h>

#include <iostream>
#include <string>
#include <queue>

#include <simgear/misc/stdint.hxx>
#include <simgear/io/iochannel.hxx>
#include <simgear/serial/serial.hxx>

SG_USING_STD(cout);
SG_USING_STD(endl);
SG_USING_STD(string);
SG_USING_STD(queue);


// Manage UGear Command Channel
class UGCommand {

private:

    int cmd_send_index;
    int cmd_recv_index;
    bool prime_state;
    queue <string> cmd_queue;

public:

    UGCommand();
    ~UGCommand();

    // send current command until acknowledged
    int update( SGSerialPort *serial );

    void add( const string command );
    inline int cmd_queue_size() {
        return cmd_queue.size();
    }
    inline void update_cmd_sequence( int sequence ) {
        cmd_recv_index = sequence;
    }
};


extern UGCommand command_mgr;


#endif // _FG_UGEAR_COMMAND_HXX