/* -------------------------------------------------------------------------- *
 *                                   OpenMM                                   *
 * -------------------------------------------------------------------------- *
 * This is part of the OpenMM molecular simulation toolkit.                   *
 * See https://openmm.org/development.                                        *
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 * Portions copyright (c) 2010-2016 Stanford University and the Authors.      *
 * Authors: Peter Eastman                                                     *
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#include "openmm/internal/AssertionUtilities.h"
#include "openmm/GayBerneForce.h"
#include "openmm/serialization/XmlSerializer.h"
#include <iostream>
#include <sstream>

using namespace OpenMM;
using namespace std;

void testSerialization() {
    // Create a Force.

    GayBerneForce force;
    force.setForceGroup(3);
    force.setName("custom name");
    force.setNonbondedMethod(GayBerneForce::CutoffPeriodic);
    force.setSwitchingDistance(1.5);
    force.setUseSwitchingFunction(true);
    force.setCutoffDistance(2.0);
    force.addParticle(0.1, 0.01, -1, -1, 0.5, 0.5, 0.5, 1.0, 1.0, 1.0);
    force.addParticle(0.2, 0.02, -1, -1, 0.7, 0.7, 0.7, 1.2, 1.2, 1.2);
    force.addParticle(0.3, 0.03, 1, 0, 0.8, 0.9, 1.0, 0.5, 0.6, 0.7);
    force.addException(0, 1, 0.5, 0.1);
    force.addException(1, 2, 0.4, 0.2);

    // Serialize and then deserialize it.

    stringstream buffer;
    XmlSerializer::serialize<GayBerneForce>(&force, "Force", buffer);
    GayBerneForce* copy = XmlSerializer::deserialize<GayBerneForce>(buffer);

    // Compare the two forces to see if they are identical.

    GayBerneForce& force2 = *copy;
    ASSERT_EQUAL(force.getForceGroup(), force2.getForceGroup());
    ASSERT_EQUAL(force.getName(), force2.getName());
    ASSERT_EQUAL(force.getNonbondedMethod(), force2.getNonbondedMethod());
    ASSERT_EQUAL(force.getSwitchingDistance(), force2.getSwitchingDistance());
    ASSERT_EQUAL(force.getUseSwitchingFunction(), force2.getUseSwitchingFunction());
    ASSERT_EQUAL(force.getCutoffDistance(), force2.getCutoffDistance());
    ASSERT_EQUAL(force.getNumParticles(), force2.getNumParticles());
    for (int i = 0; i < force.getNumParticles(); i++) {
        double sigma1, epsilon1, sx1, sy1, sz1, ex1, ey1, ez1;
        double sigma2, epsilon2, sx2, sy2, sz2, ex2, ey2, ez2;
        int xparticle1, yparticle1, xparticle2, yparticle2;
        force.getParticleParameters(i, sigma1, epsilon1, xparticle1, yparticle1, sx1, sy1, sz1, ex1, ey1, ez1);
        force2.getParticleParameters(i, sigma2, epsilon2, xparticle2, yparticle2, sx2, sy2, sz2, ex2, ey2, ez2);
        ASSERT_EQUAL(sigma1, sigma2);
        ASSERT_EQUAL(epsilon1, epsilon2);
        ASSERT_EQUAL(xparticle1, xparticle1);
        ASSERT_EQUAL(xparticle2, xparticle2);
        ASSERT_EQUAL(sx1, sx2);
        ASSERT_EQUAL(sy1, sy2);
        ASSERT_EQUAL(sz1, sz2);
        ASSERT_EQUAL(ex1, ex2);
        ASSERT_EQUAL(ey1, ey2);
        ASSERT_EQUAL(ez1, ez2);
    }
    ASSERT_EQUAL(force.getNumExceptions(), force2.getNumExceptions());
    for (int i = 0; i < force.getNumExceptions(); i++) {
        int a1, a2, b1, b2;
        double sigma1, epsilon1;
        double sigma2, epsilon2;
        force.getExceptionParameters(i, a1, b1, sigma1, epsilon1);
        force2.getExceptionParameters(i, a2, b2, sigma2, epsilon2);
        ASSERT_EQUAL(a1, a2);
        ASSERT_EQUAL(b1, b2);
        ASSERT_EQUAL(sigma1, sigma2);
        ASSERT_EQUAL(epsilon1, epsilon2);
    }
}

int main() {
    try {
        testSerialization();
    }
    catch(const exception& e) {
        cout << "exception: " << e.what() << endl;
        return 1;
    }
    cout << "Done" << endl;
    return 0;
}
