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# Licensed under the Apache License, Version 2.0 (the "License"). You
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from typing import List

from pydantic import BaseModel

from braket.ir.ahs.driving_field import DrivingField
from braket.ir.ahs.shifting_field import ShiftingField


class Hamiltonian(BaseModel):
    """
    Specifies the Hamiltonian

    Attributes:
        driving_fileds: An externally controlled force
            that drives coherent transitions between selected levels of certain atom types
        shifting_fields: An externally controlled polarizing force
            the effect of which is accurately described by a frequency shift of certain levels.

    Examples:
        >>> Hamiltonian(driving_fields=[DrivingField],shifting_fields=[ShiftingField])
    """

    drivingFields: List[DrivingField]
    shiftingFields: List[ShiftingField]