/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  

*

*/

#ifndef C_CATALOGSHTTPSTACK_H

#define C_CATALOGSHTTPSTACK_H

#include <http/mhttpdatasupplier.h>

#include <http/mhttptransactioncallback.h>

#include <http/mhttpauthenticationcallback.h>

#include "catalogshttpstackobserver.h"

#include "catalogskeyvaluepair.h"

#include "catalogsconnectionmethod.h"

// Constants

// Forward declarations

class RHTTPSession;

class RHTTPTransaction;

class CCatalogsHttpConnectionCreator;

class CCatalogsHttpConnectionManager;

class CCatalogsConnection;

/**

 * Symbian implementation of a HTTP stack.

 */

class CCatalogsHttpStack :   

    public CActive,     

    public MHTTPTransactionCallback,

    public MHTTPDataSupplier,

    public MHTTPAuthenticationCallback

    {

public:

    static CCatalogsHttpStack* NewL( 

        MCatalogsHttpStackObserver* aObserver,

        CCatalogsConnection& aConnection,

        CCatalogsHttpConnectionCreator& aConnectionCreator );

    static CCatalogsHttpStack* NewLC( 

        MCatalogsHttpStackObserver* aObserver,

        CCatalogsConnection& aConnection,

        CCatalogsHttpConnectionCreator& aConnectionCreator );

    virtual ~CCatalogsHttpStack();

private:

    void ConstructL();

    CCatalogsHttpStack( 

        MCatalogsHttpStackObserver* iObserver,

        CCatalogsConnection& aConnection,

        CCatalogsHttpConnectionCreator& aConnectionCreator );

    void SetHeaderL( RHTTPHeaders aHeaders, 

                     TInt aHdrField, 

                     const TDesC8& aHdrValue);

public:     

    void ClearHeaders();

    void AddHeaderL( const CCatalogsKeyValuePair* aPair );

    void IssueHttpRequestL( const TDesC8& aMethod,

                            const TDesC8& aURI,

                            const TDesC8& aContentType,

                            const TDesC8& aBody );

    void CancelTransaction();

    void ReleaseBody();    

    void SetConnectionMethodL( const TCatalogsConnectionMethod& aMethod );

    /** 

     * Real accesspoint id if connected     

     */

    TUint32 AccessPointID() const;

    void SetObserver( MCatalogsHttpStackObserver* aObserver );

    /**

     * @param aManager Connection manager. Ownership is NOT transferred

     */

    void SetConnectionManager( CCatalogsHttpConnectionManager* aManager );

private:

    void MHFRunL( RHTTPTransaction aTransaction, const THTTPEvent& aEvent );

    TInt MHFRunError( TInt aError, 

                      RHTTPTransaction aTransaction, 

                      const THTTPEvent& aEvent );

private:

    void ReleaseData();

    TBool GetNextDataPart( TPtrC8& aDataPart );

    TInt Reset();

    TInt OverallDataSize();    

    void SetTimeoutTimer();

    void CancelTimeoutTimer();

private:

    TBool GetCredentialsL( const TUriC8& aURI, 

                           RString aRealm, 

                           RStringF aAuthenticationType, 

                           RString& aUsername, 

                           RString& aPassword );

private:

    void RunL();

    void DoCancel();

private:

    enum

        {

        ENone,

        ETimeout

        } iState;

    RTimer                  iTimer;        

    RHTTPSession            iSession;

    RHTTPTransaction        iTransaction;

    RPointerArray<CCatalogsKeyValuePair> iUserHeaders;

    TBool                   iConnected;

    TCatalogsConnectionMethod iConnectionMethod;    

    TInt                    iLastError;

    RStringPool             iPool;

    TStringTable const&     iTable;

    MHTTPDataSupplier*      iBody;

    MCatalogsHttpStackObserver*  iObserver;  // Used for passing body data and

                                        // events to the client.

    HBufC8*                 iPostData;  // Data for HTTP requests

    TBool                   iRunning;   // ETrue, if transaction running

    CCatalogsConnection&    iConnection; 

    CCatalogsHttpConnectionCreator& iConnectionCreator;

    TBool                   iConnectionOpened; // ETrue if iConnection is open

    CCatalogsHttpConnectionManager* iConnectionManager; // not owned

    };

#endif // C_CATALOGSHTTPSTACK_H