# Copyright (c) 2023 Lincoln Stein (https://github.com/lstein) and the InvokeAI Development Team

"""
Base class for the InvokeAI configuration system.
It defines a type of pydantic BaseSettings object that
is able to read and write from an omegaconf-based config file,
with overriding of settings from environment variables and/or
the command line.
"""

from __future__ import annotations

import argparse
import pydoc
from typing import Union


class PagingArgumentParser(argparse.ArgumentParser):
    """
    A custom ArgumentParser that uses pydoc to page its output.
    It also supports reading defaults from an init file.
    """

    def print_help(self, file=None) -> None:
        text = self.format_help()
        pydoc.pager(text)


def int_or_float_or_str(value: str) -> Union[int, float, str]:
    """
    Workaround for argparse type checking.
    """
    try:
        return int(value)
    except Exception as e:  # noqa F841
        pass
    try:
        return float(value)
    except Exception as e:  # noqa F841
        pass
    return str(value)