from diceplayer.shared.utils.dataclass_protocol import Dataclass

from dataclasses import dataclass
from dacite import from_dict


@dataclass
class GaussianDTO(Dataclass):
    """
    Data Transfer Object for the Gaussian configuration.
    """
    level: str
    qmprog: str

    chgmult = [0, 1]
    pop: str = 'chelpg'
    chg_tol: float = 0.01
    keywords: str = None

    def __post_init__(self):
        if self.qmprog not in ("g03", "g09", "g16"):
            raise ValueError(
                "Error: invalid qmprog value."
            )
        if self.level is None:
            raise ValueError(
                "Error: 'level' keyword not specified in config file."
            )

    @classmethod
    def from_dict(cls, param: dict):
        return from_dict(GaussianDTO, param)