///////////////////////////////////////////////////////////////////////////////
//
// File Driver.h
//
// For more information, please see: http://www.nektar.info
//
// The MIT License
//
// Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
// Department of Aeronautics, Imperial College London (UK), and Scientific
// Computing and Imaging Institute, University of Utah (USA).
//
// License for the specific language governing rights and limitations under
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
// Description: Base class for Drivers.
//
///////////////////////////////////////////////////////////////////////////////

#ifndef SOLVERUTILS_DRIVER_H
#define SOLVERUTILS_DRIVER_H

#include <LibUtilities/Communication/Comm.h>
#include <LibUtilities/BasicUtils/SessionReader.h>
#include <LibUtilities/BasicUtils/NekFactory.hpp>
#include <LibUtilities/BasicUtils/SharedArray.hpp>

#include <SolverUtils/SolverUtils.hpp>
#include <SolverUtils/EquationSystem.h>

namespace Nektar
{
    namespace SolverUtils 
    {
        class Driver;
	
        /// A shared pointer to a Driver object
        typedef boost::shared_ptr<Driver> DriverSharedPtr;
    
        /// Datatype of the NekFactory used to instantiate classes derived from
        /// the Driver class.
        typedef LibUtilities::NekFactory<
            std::string, Driver,
            const LibUtilities::SessionReaderSharedPtr&
            > DriverFactory;
        SOLVER_UTILS_EXPORT DriverFactory& GetDriverFactory();
    
        /// Base class for the development of solvers.
        class Driver
        {
        public:
            /// Destructor
            virtual ~Driver();
        
            /// Initialise Object
            SOLVER_UTILS_EXPORT inline void InitObject(ostream &out = cout);
        
            /// Execute driver
            SOLVER_UTILS_EXPORT inline void Execute(ostream &out = cout);

            SOLVER_UTILS_EXPORT inline Array<OneD, EquationSystemSharedPtr> GetEqu();
	
            SOLVER_UTILS_EXPORT Array<OneD, NekDouble> GetRealEvl(void);         
            SOLVER_UTILS_EXPORT Array<OneD, NekDouble> GetImagEvl(void);
         

        protected:
            /// Communication object
            LibUtilities::CommSharedPtr                 m_comm;
	
            /// Session reader object
            LibUtilities::SessionReaderSharedPtr        m_session;
        
            /// Equation system to solve
            Array<OneD, EquationSystemSharedPtr>        m_equ;
		
            ///number of equations
            int m_nequ;
	
            ///Evolution Operator
            enum EvolutionOperatorType m_EvolutionOperator;
	
            /// Initialises EquationSystem class members.
            Driver(const LibUtilities::SessionReaderSharedPtr pSession);
        
            SOLVER_UTILS_EXPORT virtual void v_InitObject(ostream &out = cout);
        
            /// Virtual function for solve implementation.
            SOLVER_UTILS_EXPORT virtual void v_Execute(ostream &out = cout) = 0;
        

            SOLVER_UTILS_EXPORT virtual Array<OneD, NekDouble> v_GetRealEvl(void);         
            SOLVER_UTILS_EXPORT virtual Array<OneD, NekDouble> v_GetImagEvl(void);


            static std::string evolutionOperatorLookupIds[];
            static std::string evolutionOperatorDef;
            static std::string driverDefault;

        };

        inline void Driver::InitObject(ostream &out)
        {
            v_InitObject(out);
        }

        inline void Driver::Execute(ostream &out)
        {
            v_Execute(out);
        }

        inline Array<OneD, EquationSystemSharedPtr> Driver::GetEqu()
        {
            return m_equ;
        }

        inline Array<OneD, NekDouble> Driver::GetRealEvl()
        {
            return v_GetRealEvl();
        }
    
        inline Array<OneD, NekDouble> Driver::GetImagEvl()
        {
            return v_GetImagEvl();
        }
    }
} //end of namespace

#endif //NEKTAR_SOLVERS_AUXILIARY_ADRBASE_H

