import os
import sys

from .refit_logger import logger

# TODO: Make a standard function for reading config files, so it is
# reusable


def get_standard_name_number(current_number: int, number_str_length: int) -> str:
    """Returns a number string filled to the length of the input number

    This function returns the number in a standartized way as a string.
    As input it takes the current number of the string to build and a
    number which determines the length of the string.

    Args:
        current_number (str):   The current number of the item.
        number_str_length (int):    The length of the string which gets returned.

    Examples:
        >>> get_standard_name_number(1, 2)
        '01'
        >>> get_standard_name_number(23, 4)
        '0023'
    """
    # logger.debug(
    #    f"FUNC: get_standard_name_number() index={current_number} string_length={number_str_length}"
    # )
    temp_current_number = str(current_number)
    standard_name_number = str.zfill(temp_current_number, number_str_length)
    # logger.debug(
    #    f"FUNC: get_standard_name_number() return value= '{standard_name_number}'"
    # )
    return standard_name_number


def get_standard_folder_name(name: str) -> str:
    """Returnes a standard name either from a list or the default value.

    This function sanitizes the input, which gets passed as a list or None from
    argparse. The function either chooses the first entry of the list, given to
    the --name argument or returns the default value 'directory'

    Args:
        name (list[str] | None):    A list of names if passed to the --name argument
                                    or None if no name is passed.

    Returns:
        str:    The file name. Returns 'file' as default value if name argument is 'None'
                otherwise the first element of the list.

    Examples:
        >>> get_standard_file_name(None)
        'file'
        >>> get_standard_file_name(["example"])
        'example'
        >>> get_standard_file_name(["directory_name", "example"])
        'directory_name'
    """

    logger.debug(
        f"FUNC: get_standard_folder_name() MSG: entered function with value: '{name}'"
    )
    standard_folder_name = name[0] if name is not None else "directory"

    logger.debug(
        f"FUNC: get_standard_folder_name() MSG: exiting function with folder name: '{standard_folder_name}'"
    )

    return standard_folder_name


def get_standard_file_name(name) -> str:
    """Returnes a name either from a list or the default value.

    This function sanitizes the input, which gets passed as a list or None from
    argparse. The function either chooses the first entry of the list, given to
    the --name argument or returns the default value 'file'

    Args:
        name (list[str] | None):    A list of names if passed to the --name argument
                                    or None if no name is passed.

    Returns:
        str:    The file name. Returns 'file' as default value if name argument is 'None'
                otherwise the first element of the list.

    Examples:
        >>> get_standard_file_name(None)
        'file'
        >>> get_standard_file_name(["example"])
        'example'
        >>> get_standard_file_name(["file_name", "example"])
        'file_name'
    """

    logger.debug(
        f"FUNC: get_standard_file_name() MSG: entered function with name='{name}'"
    )
    standard_file_name = name[0] if name is not None else "file"
    logger.debug(
        f"FUNC: get_standard_file_name MSG: Continuing with expected input: '{standard_file_name}'"
    )

    logger.debug("FUNC get_standard_file_name() MSG: Exit")
    return standard_file_name


def get_current_path(path) -> str:
    """Checks if the path argument is emty and applies the current directory as working path.

    This function takes an list with strings as an input. If the input is `None` the current
    directory is taken as the working directory.
    If the path is passed, a check for its existence takes place.

    Args:
        path (str): _The current working directory._

    Returns:
        str: _Returns the path of the current directory after check for existence_
    """

    logger.debug(f"FUNC: get_current_path() MSG: entered function with path = '{path}'")
    if path is None:
        # Set the current directory if none is passed with the command.
        path = "."
        logger.warning(
            f"FUNC: {get_current_path.__name__}() MSG: Path now has the value: '{path}'"
        )
        return path
    else:
        # Checks if the path, entered by the user, exists.
        if os.path.exists(path) is True:
            logger.debug(
                f"FUNC: {get_current_path.__name__} MSG: Path '{path}' exists, continue...."
            )
            return path
        else:
            ERROR_MESSAGE = (
                f"FUNC: {get_current_path.__name__} MSG: '{path}' does not exist"
            )
            logger.warning(ERROR_MESSAGE)
            print(ERROR_MESSAGE)
            sys.exit(1)


# FIXME: th function needs some attention
# TODO:
# - add proper debugging
# - make it walk down one directory.
def create_recursive_folders(
    input_path, target_depth, current_depth, width, curret_width
):
    """Creates a recursive directory structure with y as depth and x as width"""

    if current_depth == target_depth:
        sys.exit(1)
    # length_width = str(len(width))

    length_width = len(str(width))
    logger.debug(
        f"FUNC: create_recursive_folders(length_width) MSG: length_width='{length_width}'"
    )
    while curret_width < width:
        # TODO: fix the issue, that the number gets appended to an existing number
        new_directory_name = "sub_dir" + get_standard_name_number(length_width, width)
        new_directory_path = os.path.join(input_path, new_directory_name)
        print(new_directory_path)
        curret_width += 1
        create_recursive_folders(
            new_directory_path,
            target_depth,
            width,
            current_depth + 1,
            curret_width,
        )


# create_recursive_folders(".", 2, 0, 3)