import argparse
import dataclasses
import typing

from . import PKG_NAME


@dataclasses.dataclass(frozen=True, slots=True)
class Parameters:
    debug: bool = False
    quiet: bool = False

    @classmethod
    def from_namespace(cls, args: argparse.Namespace) -> Parameters:
        return Parameters(**vars(args))


def parse_parameters(args: typing.Sequence[str]) -> Parameters:
    default_values = Parameters()
    parser = argparse.ArgumentParser(
        PKG_NAME,
        suggest_on_error=True,
    )
    parser.add_argument(
        "--debug", action=argparse.BooleanOptionalAction, default=default_values.debug
    )
    parser.add_argument(
        "--quiet", action=argparse.BooleanOptionalAction, default=default_values.quiet
    )
    parsed_args = parser.parse_args(args)
    return Parameters.from_namespace(parsed_args)