import argparse
import pathlib
import sys

from .. import __version__
from ..backend import compose
from ..config import Paths


# pylint: disable=too-few-public-methods
class Arguments(argparse.Namespace):
    """
    Default Arguments when calling the CLI
    """
    output: str

def parse_arguments():
    """
    Create a parser and parse the arguments of sys.argv based on the Arguments Namespace
    Returns arguments and extra arguments separately
    """
    parser = argparse.ArgumentParser(
                        prog="atlasimagecomposer",
                        description="CLI tool to automatically generate expression sheets for servants",)

    parser.add_argument("--output", action="store", type=str, default=None, dest="output", help="Set the output location. This can be an absolute or relative path")
    parser.add_argument("--version", action="version", version=f"atlasimagecomposer {__version__}")

    args = Arguments()
    args, extra_args = parser.parse_known_args(sys.argv[1:], namespace=args)
    return args, extra_args

def welcome():
    print("-------------------------------------------------")
    print("  Welcome to the FGO Sprite loader and composer  ")
    print("               developed by Firq                 ")
    print("-------------------------------------------------")

def run():
    args, _ = parse_arguments()
    if args.output:
        Paths.OUTPUT = pathlib.Path(args.output)

    welcome()
    compose()