/* ----------------------------------------------------------------------------
 solarpowerlog -- photovoltaic data logging

Copyright (C) 2009-2012 Tobias Frost

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

 ----------------------------------------------------------------------------
 */

/** \file CInverterSputnikSSeries.h
 *
 *  Created on: May 21, 2009
 *      Author: Tobias Frost
 *
 *      Contributors:
 *      E.A.Neonakis <eaneonakis@freemail.gr>
 */

#ifndef CINVERTERSPUTNIKSSERIES_H_
#define CINVERTERSPUTNIKSSERIES_H_

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#if defined HAVE_INV_SPUTNIK

#include "Inverters/interfaces/InverterBase.h"
#include "Inverters/BasicCommands.h"

#include "Inverters/SputnikEngineering/SputnikCommand/ISputnikCommand.h"

#include <set>

/** \fixme Implements the Inverter Interface for the Sputnik S Series
 *
 * The Sputnik S-Series are an inverter family by Sputnik Engineering
 * Please see the manufactor's homepage for details.
 */
class CInverterSputnikSSeries: public IInverterBase
{
public:
	CInverterSputnikSSeries(const string & name,
			const string & configurationpath);
	virtual ~CInverterSputnikSSeries();

	virtual bool CheckConfig();

	/** implements the ICommandTarget interface */
	virtual void ExecuteCommand(const ICommand *Command);

protected:
	/** calculate the checksum for the telegram stored in str */
	static unsigned int CalcChecksum(const char* str, int len);

private:

	/// Commands for the Workscheduler
	enum Commands
	{
	    // broadcast event.
		CMD_BRC_SHUTDOWN = BasicCommands::CMD_BRC_SHUTDOWN,
	    CMD_INIT = BasicCommands::CMD_USER_MIN,
		CMD_WAIT4CONNECTION,
		CMD_IDENTFY_WAIT,
		CMD_POLL,
		CMD_DISCONNECTED,
		CMD_DISCONNECTED_WAIT,
		CMD_EVALUATE_RECEIVE,
		CMD_WAIT_SENT,
		CMD_SEND_QUERIES,
		CMD_QUERY_POLL
	};

	/// Dataports of the sputnik inverters.
	enum Ports
	{
		QUERY = 100, COMMAND = 200, ALARM = 300,
		INTERFACE = 1000
	};

	/// Build up the communication string
	///
	/// \returns the string created, or "" if nothing to do.
	string assemblequerystring();

	/// parse the answer of the inverter.
	int parsereceivedstring(std::string &rcvd);

	/// helper for parsereceivedstring()
	bool parsetoken(string token);

	/// Adress to use as "our" adress for communication
	/// This can be set by the conffile and the parameter ownadr
	/// defaults to 0xFB
	/// unsigned int ownadr;
	void tokenizer(const char *delimiters, const string& s,
			vector<string> &tokens);

    /// stores supported commands.
    vector<ISputnikCommand*> commands;

    /// stores pending commmands.
    vector<ISputnikCommand*> pendingcommands;

    /// stores not answered commands (by removing the ansewered ones)
    set<ISputnikCommand*> notansweredcommands;

    /// set to true if the shutdown request has been received via broadcast
    /// event.
    bool _shutdown_requested;

    /// Configuration Cache: Timeout for telegramm, unit is ms
    float _cfg_response_timeout_ms;

    /// Configuration Cache: Timeout to establish a connection, unit ms
    float _cfg_connection_timeout_ms;

    /// Configuration Cache: Timeout to send a telegramm, unit ms
    float _cfg_send_timeout_ms;

    /// Configuration Cache: Reconnect delay, unit s
    float _cfg_reconnectdelay_s;

    /// cache for inverters comm adr.
    unsigned int _cfg_commadr;
    /// cache for own adr
    unsigned int _cfg_ownadr;

};

#endif

#endif /* CINVERTERSPUTNIKSSERIES_H_ */
