#pragma once

#include <vector>

namespace fluidsim::port {

struct Port {
    float mass_flow{};        // kg/s, positive into the owning component
    float enthalpy{};         // J/kg
    float pressure{101325.0f};
    float density{1.1768f};
    float temperature{300.0f};
    float gamma_value{1.4f}, gas_constant_value{287.0f};
    float air_fraction{1.0f};
    float fuel_fraction{};
    float fuel_equivalent_fraction{}; // fuel origin, including fuel already burned
    float* owner_energy{};
    float* owner_air_mass{};
    float* owner_exhaust_mass{};
    float* owner_fuel_mass{};
};

// Small equivalent of the C# IComponent lifecycle. Components update their
// conserved state after the coupled 1-D pipe solve has accumulated port flow.
class Component {
public:
    virtual ~Component() = default;
    virtual std::vector<Port*> ports() = 0;
    // Optional actuation at each CFL substep, before boundary fluxes are resolved.
    virtual void prepare_step(float /*dt*/) {}
    virtual void update_state(float dt) = 0;
};

} // namespace fluidsim::port