#ifndef HTTPEXAMPLEENGINE_H
#define HTTPEXAMPLEENGINE_H

// INCLUDES
// System includes
#include <e32base.h>						// CBase
#include <MHTTPAuthenticationCallback.h>	// MHTTPAuthenticationCallback
#include <mhttpdatasupplier.h>				// MHTTPDataSupplier
#include <mhttptransactioncallback.h>		// MHTTPTransactionCallback
#include <RHTTPSession.h>					// RHTTPSession
#include <RHTTPTransaction.h>				// RHTTPTransaction

// CONSTANTS

// FORWARD DECLARATIONS
class CHTTPFormEncoder;

// CLASS DECLARATION

/**
*
* @class	MHTTPExampleEngineObserver HTTPExampleEngine.h
* @brief	This is the engine observer interface
*
* Copyright (c) EMCC Software Ltd 2003
* @version	1.0
*
*/
class MHTTPExampleEngineObserver
	{
	public:
		virtual void ResponseStatusL(TInt aStatusCode, const TDesC& aStatusText) = 0;
		virtual void ResponseReceivedL(const TDesC& aResponseBuffer) = 0;
	};


/**
*
* @class	CHTTPExampleEngine HTTPExampleEngine.h
* @brief	This is the engine class, responsible for HTTP transactions.
*
* Copyright (c) EMCC Software Ltd 2003
* @version	1.0
*
*/
class CHTTPExampleEngine : public CBase,
						   public MHTTPTransactionCallback
	{
	public:
		static CHTTPExampleEngine* NewL(MHTTPExampleEngineObserver& aObserver);
		~CHTTPExampleEngine();

		void GetRequestL(const TDesC& aUri);
		void PostRequestL(const TDesC& aName);

		// Cancel an outstanding transaction
		void Cancel();

	private: // from MHTTPTransactionCallback
		virtual void MHFRunL(RHTTPTransaction aTransaction, const THTTPEvent& aEvent);
		virtual TInt MHFRunError(TInt aError, RHTTPTransaction aTransaction, const THTTPEvent& aEvent);

	private:
		CHTTPExampleEngine(MHTTPExampleEngineObserver& aObserver);
		void ConstructL();

		void ParseUriL(const TDesC& aUri);
		void AddHeaderL(RHTTPHeaders aHeaders, TInt aHeaderField, const TDesC8& aHeaderValue);

	private:
		RHTTPSession iSession;
		RHTTPTransaction iTransaction;

		HBufC* iResponseBuffer;
		HBufC8* iUri;
		TUriParser8 iUriParser;
		CHTTPFormEncoder* iFormEncoder;

		MHTTPExampleEngineObserver& iObserver;
	};

#endif	// #ifndef HTTPEXAMPLEENGINE_H

// End of File