#!/usr/bin/env python3


# Copyright 2018 The Meson development team

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#     http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

'''
Copy files
'''

import argparse
import shutil
import typing as T
from pathlib import Path

PathLike = T.Union[Path,str]

def copy_files(files: T.List[str], input_dir: PathLike, output_dir: PathLike) -> None:
    if not input_dir:
        raise ValueError(f'Input directory value is not set')
    if not output_dir:
        raise ValueError(f'Output directory value is not set')
    
    input_dir = Path(input_dir).resolve()
    output_dir = Path(output_dir).resolve()
    output_dir.mkdir(parents=True, exist_ok=True)
    
    for f in files:
        if (input_dir/f).is_dir():
            shutil.copytree(input_dir/f, output_dir/f)
        else:
            shutil.copy2(input_dir/f, output_dir/f)

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Copy files')
    parser.add_argument('files', metavar='FILE', nargs='*')
    parser.add_argument('-C', dest='input_dir', required=True)
    parser.add_argument('--output-dir', required=True)
    
    args = parser.parse_args()

    copy_files(files=args.files,
               input_dir=args.input_dir,
               output_dir=args.output_dir)