#include "WarpX.H"
#include "Particles/Gather/GetExternalFields.H"

GetExternalEField::GetExternalEField (const WarpXParIter& a_pti, int a_offset) noexcept
{
    auto& warpx = WarpX::GetInstance();
    auto& mypc = warpx.GetPartContainer();
    if (mypc.m_E_ext_particle_s=="constant" || mypc.m_E_ext_particle_s=="default")
    {
        m_type = Constant;
        m_field_value[0] = mypc.m_E_external_particle[0];
        m_field_value[1] = mypc.m_E_external_particle[1];
        m_field_value[2] = mypc.m_E_external_particle[2];
    }
    else if (mypc.m_E_ext_particle_s=="parse_e_ext_particle_function")
    {
        m_type = Parser;
        m_time = warpx.gett_new(a_pti.GetLevel());
        m_get_position = GetParticlePosition(a_pti, a_offset);
        m_xfield_partparser = getParser(mypc.m_Ex_particle_parser);
        m_yfield_partparser = getParser(mypc.m_Ey_particle_parser);
        m_zfield_partparser = getParser(mypc.m_Ez_particle_parser);
    }
}

GetExternalBField::GetExternalBField (const WarpXParIter& a_pti, int a_offset) noexcept
{
    auto& warpx = WarpX::GetInstance();
    auto& mypc = warpx.GetPartContainer();
    if (mypc.m_B_ext_particle_s=="constant" || mypc.m_B_ext_particle_s=="default")
    {
        m_type = Constant;
        m_field_value[0] = mypc.m_B_external_particle[0];
        m_field_value[1] = mypc.m_B_external_particle[1];
        m_field_value[2] = mypc.m_B_external_particle[2];
    }
    else if (mypc.m_B_ext_particle_s=="parse_b_ext_particle_function")
    {
        m_type = Parser;
        m_time = warpx.gett_new(a_pti.GetLevel());
        m_get_position = GetParticlePosition(a_pti, a_offset);
        m_xfield_partparser = getParser(mypc.m_Bx_particle_parser);
        m_yfield_partparser = getParser(mypc.m_By_particle_parser);
        m_zfield_partparser = getParser(mypc.m_Bz_particle_parser);
    }
}