module;
#include <mfem.hpp>
export module mean_field:model.structure.base;
export import :eos.runtime;

export namespace mean_field::models::structure {
    struct StructureSeed {
        mfem::Vector radius;
        mfem::Vector density;
        mfem::Vector enthalpy;

        double stellarRadius;
        double centralDensity;
        double centralEnthalpy;
    };

    struct StructureSeedRequest {
        double centralDensity;
        int radialSampleCount{512};
    };

    class StructureBase {
    public:
        virtual ~StructureBase()                                                                       = default;

        [[nodiscard]] virtual eos::EquationOfStateView equationOfState() const noexcept                = 0;

        [[nodiscard]] virtual double targetMass() const noexcept                                       = 0;

        [[nodiscard]] virtual StructureSeed makeInitialSeed(const StructureSeedRequest &request) const = 0;

        virtual void validate() const                                                                  = 0;

    protected:
        StructureBase() = default;
    };
} // namespace mean_field::models::structure