#ifndef AMOEBA_OPENMM_CUDAKERNELS_H_
#define AMOEBA_OPENMM_CUDAKERNELS_H_

/* -------------------------------------------------------------------------- *
 *                              OpenMMAmoeba                                  *
 * -------------------------------------------------------------------------- *
 * This is part of the OpenMM molecular simulation toolkit originating from   *
 * Simbios, the NIH National Center for Physics-Based Simulation of           *
 * Biological Structures at Stanford, funded under the NIH Roadmap for        *
 * Medical Research, grant U54 GM072970. See https://simtk.org.               *
 *                                                                            *
 * Portions copyright (c) 2008 Stanford University and the Authors.           *
 * Authors:                                                                   *
 * Contributors:                                                              *
 *                                                                            *
 * 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/>.      *
 * -------------------------------------------------------------------------- */

#include "openmm/amoebaKernels.h"
#include "CudaKernels.h"
#include "openmm/kernels.h"
#include "openmm/System.h"
#include "AmoebaCudaData.h"

namespace OpenMM {

/**
 * This kernel is invoked by AmoebaBondForce to calculate the forces acting on the system and the energy of the system.
 */
class CudaCalcAmoebaBondForceKernel : public CalcAmoebaBondForceKernel {
public:
    CudaCalcAmoebaBondForceKernel(std::string name, 
                                          const Platform& platform,
                                          AmoebaCudaData& data,
                                          System& system);
    ~CudaCalcAmoebaBondForceKernel();
    /**
     * Initialize the kernel.
     * 
     * @param system     the System this kernel will be applied to
     * @param force      the AmoebaBondForce this kernel will be used for
     */
    void initialize(const System& system, const AmoebaBondForce& force);
    /**
     * Execute the kernel to calculate the forces and/or energy.
     *
     * @param context        the context in which to execute this kernel
     * @param includeForces  true if forces should be calculated
     * @param includeEnergy  true if the energy should be calculated
     * @return the potential energy due to the force
     */
    double execute(ContextImpl& context, bool includeForces, bool includeEnergy);
private:
    class ForceInfo;
    int numBonds;
    AmoebaCudaData& data;
    System& system;
};

/**
 * This kernel is invoked by AmoebaAngleForce to calculate the forces acting on the system and the energy of the system.
 */
class CudaCalcAmoebaAngleForceKernel : public CalcAmoebaAngleForceKernel {
public:
    CudaCalcAmoebaAngleForceKernel(std::string name, const Platform& platform, AmoebaCudaData& data, System& system);
    ~CudaCalcAmoebaAngleForceKernel();
    /**
     * Initialize the kernel.
     * 
     * @param system     the System this kernel will be applied to
     * @param force      the AmoebaAngleForce this kernel will be used for
     */
    void initialize(const System& system, const AmoebaAngleForce& force);
    /**
     * Execute the kernel to calculate the forces and/or energy.
     *
     * @param context        the context in which to execute this kernel
     * @param includeForces  true if forces should be calculated
     * @param includeEnergy  true if the energy should be calculated
     * @return the potential energy due to the force
     */
    double execute(ContextImpl& context, bool includeForces, bool includeEnergy);
private:
    class ForceInfo;
    int numAngles;
    AmoebaCudaData& data;
    System& system;
};

/**
 * This kernel is invoked by AmoebaInPlaneAngleForce to calculate the forces acting on the system and the energy of the system.
 */
class CudaCalcAmoebaInPlaneAngleForceKernel : public CalcAmoebaInPlaneAngleForceKernel {
public:
    CudaCalcAmoebaInPlaneAngleForceKernel(std::string name, const Platform& platform, AmoebaCudaData& data, System& system);
    ~CudaCalcAmoebaInPlaneAngleForceKernel();
    /**
     * Initialize the kernel.
     * 
     * @param system     the System this kernel will be applied to
     * @param force      the AmoebaInPlaneAngleForce this kernel will be used for
     */
    void initialize(const System& system, const AmoebaInPlaneAngleForce& force);
    /**
     * Execute the kernel to calculate the forces and/or energy.
     *
     * @param context        the context in which to execute this kernel
     * @param includeForces  true if forces should be calculated
     * @param includeEnergy  true if the energy should be calculated
     * @return the potential energy due to the force
     */
    double execute(ContextImpl& context, bool includeForces, bool includeEnergy);
private:
    class ForceInfo;
    int numAngles;
    AmoebaCudaData& data;
    System& system;
};

/**
 * This kernel is invoked by AmoebaPiTorsionForce to calculate the forces acting on the system and the energy of the system.
 */
class CudaCalcAmoebaPiTorsionForceKernel : public CalcAmoebaPiTorsionForceKernel {
public:
    CudaCalcAmoebaPiTorsionForceKernel(std::string name, const Platform& platform, AmoebaCudaData& data, System& system);
    ~CudaCalcAmoebaPiTorsionForceKernel();
    /**
     * Initialize the kernel.
     * 
     * @param system     the System this kernel will be applied to
     * @param force      the AmoebaPiTorsionForce this kernel will be used for
     */
    void initialize(const System& system, const AmoebaPiTorsionForce& force);
    /**
     * Execute the kernel to calculate the forces and/or energy.
     *
     * @param context        the context in which to execute this kernel
     * @param includeForces  true if forces should be calculated
     * @param includeEnergy  true if the energy should be calculated
     * @return the potential energy due to the force
     */
    double execute(ContextImpl& context, bool includeForces, bool includeEnergy);
private:
    class ForceInfo;
    int numPiTorsions;
    AmoebaCudaData& data;
    System& system;
};

/**
 * This kernel is invoked by AmoebaStretchBendForce to calculate the forces acting on the system and the energy of the system.
 */
class CudaCalcAmoebaStretchBendForceKernel : public CalcAmoebaStretchBendForceKernel {
public:
    CudaCalcAmoebaStretchBendForceKernel(std::string name, const Platform& platform, AmoebaCudaData& data, System& system);
    ~CudaCalcAmoebaStretchBendForceKernel();
    /**
     * Initialize the kernel.
     * 
     * @param system     the System this kernel will be applied to
     * @param force      the AmoebaStretchBendForce this kernel will be used for
     */
    void initialize(const System& system, const AmoebaStretchBendForce& force);
    /**
     * Execute the kernel to calculate the forces and/or energy.
     *
     * @param context        the context in which to execute this kernel
     * @param includeForces  true if forces should be calculated
     * @param includeEnergy  true if the energy should be calculated
     * @return the potential energy due to the force
     */
    double execute(ContextImpl& context, bool includeForces, bool includeEnergy);
private:
    class ForceInfo;
    int numStretchBends;
    AmoebaCudaData& data;
    System& system;
};

/**
 * This kernel is invoked by AmoebaOutOfPlaneBendForce to calculate the forces acting on the system and the energy of the system.
 */
class CudaCalcAmoebaOutOfPlaneBendForceKernel : public CalcAmoebaOutOfPlaneBendForceKernel {
public:
    CudaCalcAmoebaOutOfPlaneBendForceKernel(std::string name, const Platform& platform, AmoebaCudaData& data, System& system);
    ~CudaCalcAmoebaOutOfPlaneBendForceKernel();
    /**
     * Initialize the kernel.
     * 
     * @param system     the System this kernel will be applied to
     * @param force      the AmoebaOutOfPlaneBendForce this kernel will be used for
     */
    void initialize(const System& system, const AmoebaOutOfPlaneBendForce& force);
    /**
     * Execute the kernel to calculate the forces and/or energy.
     *
     * @param context        the context in which to execute this kernel
     * @param includeForces  true if forces should be calculated
     * @param includeEnergy  true if the energy should be calculated
     * @return the potential energy due to the force
     */
    double execute(ContextImpl& context, bool includeForces, bool includeEnergy);
private:
    class ForceInfo;
    int numOutOfPlaneBends;
    AmoebaCudaData& data;
    System& system;
};

/**
 * This kernel is invoked by AmoebaTorsionTorsionForce to calculate the forces acting on the system and the energy of the system.
 */
class CudaCalcAmoebaTorsionTorsionForceKernel : public CalcAmoebaTorsionTorsionForceKernel {
public:
    CudaCalcAmoebaTorsionTorsionForceKernel(std::string name, const Platform& platform, AmoebaCudaData& data, System& system);
    ~CudaCalcAmoebaTorsionTorsionForceKernel();
    /**
     * Initialize the kernel.
     * 
     * @param system     the System this kernel will be applied to
     * @param force      the AmoebaTorsionTorsionForce this kernel will be used for
     */
    void initialize(const System& system, const AmoebaTorsionTorsionForce& force);
    /**
     * Execute the kernel to calculate the forces and/or energy.
     *
     * @param context        the context in which to execute this kernel
     * @param includeForces  true if forces should be calculated
     * @param includeEnergy  true if the energy should be calculated
     * @return the potential energy due to the force
     */
    double execute(ContextImpl& context, bool includeForces, bool includeEnergy);
private:
    class ForceInfo;
    int numTorsionTorsions;
    int numTorsionTorsionGrids;
    AmoebaCudaData& data;
    System& system;
};

/**
 * This kernel is invoked by AmoebaMultipoleForce to calculate the forces acting on the system and the energy of the system.
 */
class CudaCalcAmoebaMultipoleForceKernel : public CalcAmoebaMultipoleForceKernel {
public:
    CudaCalcAmoebaMultipoleForceKernel(std::string name, const Platform& platform, AmoebaCudaData& data, System& system);
    ~CudaCalcAmoebaMultipoleForceKernel();
    /**
     * Initialize the kernel.
     * 
     * @param system     the System this kernel will be applied to
     * @param force      the AmoebaMultipoleForce this kernel will be used for
     */
    void initialize(const System& system, const AmoebaMultipoleForce& force);
    /**
     * Execute the kernel to calculate the forces and/or energy.
     *
     * @param context        the context in which to execute this kernel
     * @param includeForces  true if forces should be calculated
     * @param includeEnergy  true if the energy should be calculated
     * @return the potential energy due to the force
     */
    double execute(ContextImpl& context, bool includeForces, bool includeEnergy);
    /**
     * Execute the kernel to calculate the electrostatic potential
     *
     * @param context        the context in which to execute this kernel
     * @param inputGrid      input grid coordinates
     * @param outputElectrostaticPotential output potential 
     */
    void getElectrostaticPotential(ContextImpl& context, const std::vector< Vec3 >& inputGrid,
                                   std::vector< double >& outputElectrostaticPotential );

   /** 
     * Get the system multipole moments
     *
     * @param context      context
     * @param outputMultipoleMonents (charge,
                                      dipole_x, dipole_y, dipole_z,
                                      quadrupole_xx, quadrupole_xy, quadrupole_xz,
                                      quadrupole_yx, quadrupole_yy, quadrupole_yz,
                                      quadrupole_zx, quadrupole_zy, quadrupole_zz )
     */

    void getSystemMultipoleMoments( ContextImpl& context, std::vector< double >& outputMultipoleMonents );


private:
    class ForceInfo;
    int numMultipoles;
    AmoebaCudaData& data;
    System& system;
};

/**
 * This kernel is invoked by AmoebaMultipoleForce to calculate the forces acting on the system and the energy of the system.
 */
class CudaCalcAmoebaGeneralizedKirkwoodForceKernel : public CalcAmoebaGeneralizedKirkwoodForceKernel {
public:
    CudaCalcAmoebaGeneralizedKirkwoodForceKernel(std::string name, const Platform& platform, AmoebaCudaData& data, System& system);
    ~CudaCalcAmoebaGeneralizedKirkwoodForceKernel();
    /**
     * Initialize the kernel.
     * 
     * @param system     the System this kernel will be applied to
     * @param force      the AmoebaMultipoleForce this kernel will be used for
     */
    void initialize(const System& system, const AmoebaGeneralizedKirkwoodForce& force);
    /**
     * Execute the kernel to calculate the forces and/or energy.
     *
     * @param context        the context in which to execute this kernel
     * @param includeForces  true if forces should be calculated
     * @param includeEnergy  true if the energy should be calculated
     * @return the potential energy due to the force
     */
    double execute(ContextImpl& context, bool includeForces, bool includeEnergy);
private:
    class ForceInfo;
    AmoebaCudaData& data;
    System& system;
};

/**
 * This kernel is invoked to calculate the vdw forces acting on the system and the energy of the system.
 */
class CudaCalcAmoebaVdwForceKernel : public CalcAmoebaVdwForceKernel {
public:
    CudaCalcAmoebaVdwForceKernel(std::string name, const Platform& platform, AmoebaCudaData& data, System& system);
    ~CudaCalcAmoebaVdwForceKernel();
    /**
     * Initialize the kernel.
     * 
     * @param system     the System this kernel will be applied to
     * @param force      the AmoebaMultipoleForce this kernel will be used for
     */
    void initialize(const System& system, const AmoebaVdwForce& force);
    /**
     * Execute the kernel to calculate the forces and/or energy.
     *
     * @param context        the context in which to execute this kernel
     * @param includeForces  true if forces should be calculated
     * @param includeEnergy  true if the energy should be calculated
     * @return the potential energy due to the force
     */
    double execute(ContextImpl& context, bool includeForces, bool includeEnergy);
private:
    class ForceInfo;
    AmoebaCudaData& data;
    System& system;
};

/**
 * This kernel is invoked to calculate the WCA dispersion forces acting on the system and the energy of the system.
 */
class CudaCalcAmoebaWcaDispersionForceKernel : public CalcAmoebaWcaDispersionForceKernel {
public:
    CudaCalcAmoebaWcaDispersionForceKernel(std::string name, const Platform& platform, AmoebaCudaData& data, System& system);
    ~CudaCalcAmoebaWcaDispersionForceKernel();
    /**
     * Initialize the kernel.
     * 
     * @param system     the System this kernel will be applied to
     * @param force      the AmoebaMultipoleForce this kernel will be used for
     */
    void initialize(const System& system, const AmoebaWcaDispersionForce& force);
    /**
     * Execute the kernel to calculate the forces and/or energy.
     *
     * @param context        the context in which to execute this kernel
     * @param includeForces  true if forces should be calculated
     * @param includeEnergy  true if the energy should be calculated
     * @return the potential energy due to the force
     */
    double execute(ContextImpl& context, bool includeForces, bool includeEnergy);
private:
    class ForceInfo;
    AmoebaCudaData& data;
    System& system;
};

} // namespace OpenMM

#endif /*AMOEBA_OPENMM_CUDAKERNELS_H*/
