/* 
 *
 * Copyright (c) <2010> Comarch S.A. and/or its subsidiary(-ies).
 * All rights reserved.
 * This component and the accompanying materials are made available
 * under the terms of the License "Eclipse Public License v1.0"
 * which accompanies this distribution, and is available
 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
 *
 * Original Contributors:
 * Comarch S.A. - original contribution.
 *
 * Contributors:
 *
 * Description:
 *
 */

#ifndef DATAHANDLER_H_
#define DATAHANDLER_H_

#include <e32base.h>

class CHsHFPParser;
class CHsHFPCommand;
class CHsHFPFeatureManager;
class CDesC8ArrayFlat;

/**
 * @brief Manages AT commands handling
 */
class CHsHFPDataHandler : public CBase
    {
public:

    /**
     * Two-phase constructor
     * @return instance of class
     */
    static CHsHFPDataHandler* NewL();

    /**
     * Two-phase constructor
     * @return instance of class
     */
    static CHsHFPDataHandler* NewLC();

    /**
     * Destructor
     */
    ~CHsHFPDataHandler();

public:
    /**
     * Profile's method for handling AT Commands
     * 
     * @param aDataIn AT command received by HS
     * @param aFromAG denotes if AT command was sent from AG
     * @param aDataOut AT response
     * 
     */
    void ProcessDataL(const TDesC8& aDataIn, const TBool aFromAG,
            TDes8& aDataOut);

    /**
     * Profile's method for handling AG client disconnection
     * 
     * @param aErr disconnection reason
     */
    void HandleClientDisconnected(TInt aErr);

    /**
     * Profile's method for handling AG client connection
     * 
     * @param aCommandOut AT response
     */
    void HandleClientConnected(TDes8& aCommandOut);

    /**
     * Profile's method for accepting incoming call
     * 
     * @param aCommandOut AT response
     */
    void HandleAcceptCallL(TDes8& aCommandOut);

    /**
     * Profile's method for releasing ongoing call
     * 
     * @param aCommandOut AT response
     */
    void HandleReleaseCallL(TDes8& aCommandOut);

private:
    /**
     * Constructor for performing 1st stage construction
     */
    CHsHFPDataHandler();

    /**
     * Constructor for performing 2nd stage construction
     */
    void ConstructL();

private:
    /**
     * Splits multiple AT commands 
     * 
     * @param aCommands 8-bit descriptor containing
     */
    CDesC8ArrayFlat* SplitCommandsL(const TDesC8 &aCommands);

    /**
     * Common funcionality for HandleAcceptCallL() and HandleReleaseCall().
     * 
     * @param aCommand input AT command
     * @param aResponse  AT response
     */
    void PerformRequestL(const TDesC8& aCommand, TDes8& aResponse);

private:
    /** Command array's granularity */
    const TInt KCommandArrayGranularity = 2;
    
    /** Temporary buffer's max length */
    const TInt KTmpBufferLength = 256;
    
    /** AT command parser */
    CHsHFPParser* iParser;

    /** Feature manager */
    CHsHFPFeatureManager* iFeatureManager;
    };

#endif /* DATAHANDLER_H_ */