"""Physics state dataclasses for thermal-electrical simulation.

These immutable state snapshots represent the simulation state at a point in time.
"""

from dataclasses import dataclass


@dataclass(frozen=True)
class ThermalState:
    """Immutable thermal state snapshot.

    Represents the thermal conditions of the DUT and its environment
    at a specific point in simulation time.

    Attributes:
        chamber_temperature: Chamber air temperature in degrees Celsius.
        case_temperature: DUT case/package temperature in degrees Celsius.
        junction_temperature: DUT junction/die temperature in degrees Celsius.
        timestamp: Simulation time in seconds since start.
    """

    chamber_temperature: float
    case_temperature: float
    junction_temperature: float
    timestamp: float


@dataclass(frozen=True)
class ElectricalState:
    """Immutable electrical state snapshot.

    Represents the electrical conditions of the DUT at a specific
    point in simulation time.

    Attributes:
        input_voltage: DUT input voltage in volts.
        output_voltage: DUT output voltage in volts.
        load_current: Load current drawn from DUT in amps.
        quiescent_current: DUT quiescent/bias current in amps.
        power_dissipation: Total power dissipated by DUT in watts.
    """

    input_voltage: float
    output_voltage: float
    load_current: float
    quiescent_current: float
    power_dissipation: float