# SPDX-License-Identifier: LGPL-2.1-or-later

# Copyright (C) 2020, 2021 igo95862

# This file is part of python-sdbus

# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.

# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.

# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
from __future__ import annotations

from argparse import ArgumentParser
from os import environ
from pathlib import Path
from subprocess import SubprocessError, run

source_root = Path(environ['MESON_SOURCE_ROOT'])
build_dir = Path(environ['MESON_BUILD_ROOT'])

tools_dir = source_root / 'tools'
src_dir = source_root / 'src'
test_dir = source_root / 'test'
wheel_build_dir = source_root / 'wheel-build'
examples_dir = source_root / 'examples'

all_python_modules = [
    tools_dir, test_dir, wheel_build_dir,
    src_dir / 'sdbus',
    src_dir / 'sdbus_async/dbus_daemon',
    src_dir / 'sdbus_block/dbus_daemon',
    source_root / 'setup.py',
]

mypy_cache_dir = build_dir / '.mypy_cache'


def run_mypy() -> None:
    print('Running mypy on all modules')
    run(
        args=(
            'mypy', '--strict', '--pretty',
            '--cache-dir', mypy_cache_dir,
            '--python-version', '3.9',
            '--namespace-packages',
            '--explicit-package-bases',
            *all_python_modules,
        ),
        check=True,
        env={'MYPYPATH': str(src_dir.absolute()), **environ},
    )


def run_flake8() -> None:
    run(
        args=(
            'flake8',
            *all_python_modules,
        ),
        check=True,
    )


def linter_main() -> None:
    is_success = True

    try:
        run_flake8()
    except SubprocessError:
        is_success = False

    try:
        run_mypy()
    except SubprocessError:
        is_success = False

    if not is_success:
        raise SystemExit(1)


def get_all_python_files() -> list[Path]:
    python_files: list[Path] = [source_root / 'setup.py']

    for python_module in all_python_modules:
        if python_module.is_dir():
            for a_file in python_module.iterdir():
                if a_file.suffix == '.py':
                    python_files.append(a_file)
        else:
            python_files.append(python_module)

    return python_files


def formater_main() -> None:

    run(
        args=('autopep8', '--recursive', '--in-place', *all_python_modules),
        check=True,
    )

    run(
        args=(
            'isort',
            '-m', 'VERTICAL_HANGING_INDENT',
            '--trailing-comma',
            *all_python_modules,
        ),
        check=True,
    )


def main() -> None:
    parser = ArgumentParser()
    parser.add_argument(
        'mode',
        choices=('lint', 'format'),
    )

    args = parser.parse_args()

    mode = args.mode

    if mode == 'lint':
        linter_main()
    elif mode == 'format':
        formater_main()
    else:
        raise ValueError('Unknown mode', mode)


if __name__ == '__main__':
    main()