#     Copyright 2021, Kay Hayen, mailto:kay.hayen@gmail.com
#
#     Part of "Nuitka", an optimizing Python compiler that is compatible and
#     integrates with CPython, but also works on its own.
#
#     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.
#
""" Wrapper around appdir from PyPI

We do not assume to be installed and fallback to an inline copy and if that
is not installed, we use our own code for best effort.
"""

from __future__ import absolute_import

import os
import tempfile

from .FileOperations import makePath
from .Importing import importFromInlineCopy

try:
    import appdirs  # pylint: disable=I0021,import-error
except ImportError:
    # We handle the case without inline copy too.
    appdirs = importFromInlineCopy("appdirs", must_exist=False)

_cache_dir = None


def getCacheDir():
    global _cache_dir  # singleton, pylint: disable=global-statement
    if _cache_dir is None:
        if appdirs is not None:
            _cache_dir = appdirs.user_cache_dir("Nuitka", None)
        else:
            _cache_dir = os.path.join(os.path.expanduser("~"), ".cache", "Nuitka")

        # For people that build with HOME set this, e.g. Debian.
        if _cache_dir.startswith(("/nonexistent/", "/sbuild-nonexistent/")):
            _cache_dir = os.path.join(tempfile.gettempdir(), "Nuitka")

        makePath(_cache_dir)

    return _cache_dir


_app_dir = None


def getAppDir():
    global _app_dir  # singleton, pylint: disable=global-statement

    if _app_dir is None:
        if appdirs is not None:
            _app_dir = appdirs.user_data_dir("Nuitka", None)
        else:
            _app_dir = os.path.join(os.path.expanduser("~"), ".config", "Nuitka")

        # For people that build with HOME set this, e.g. Debian.
        if _app_dir.startswith(("/nonexistent/", "/sbuild-nonexistent/")):
            _app_dir = os.path.join(tempfile.gettempdir(), "Nuitka")

        makePath(_app_dir)

    return _app_dir

#     Copyright 2021, Kay Hayen, mailto:kay.hayen@gmail.com
#
#     Part of "Nuitka", an optimizing Python compiler that is compatible and
#     integrates with CPython, but also works on its own.
#
#     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.
#
""" Wrapper around appdir from PyPI

We do not assume to be installed and fallback to an inline copy and if that
is not installed, we use our own code for best effort.
"""

from __future__ import absolute_import

import os
import tempfile

from .FileOperations import makePath
from .Importing import importFromInlineCopy

try:
    import appdirs  # pylint: disable=I0021,import-error
except ImportError:
    # We handle the case without inline copy too.
    appdirs = importFromInlineCopy("appdirs", must_exist=False)

_cache_dir = None


def getCacheDir():
    global _cache_dir  # singleton, pylint: disable=global-statement

    if _cache_dir is None:
        _cache_dir = os.getenv("NUITKA_CACHE_DIR")

        if _cache_dir:
            _cache_dir = os.path.expanduser(_cache_dir)
        elif appdirs is not None:
            _cache_dir = appdirs.user_cache_dir("Nuitka", None)
        else:
            _cache_dir = os.path.join(os.path.expanduser("~"), ".cache", "Nuitka")

        # For people that build with HOME set this, e.g. Debian.
        if _cache_dir.startswith(("/nonexistent/", "/sbuild-nonexistent/")):
            _cache_dir = os.path.join(tempfile.gettempdir(), "Nuitka")

        makePath(_cache_dir)

    return _cache_dir


_app_dir = None


def getAppDir():
    global _app_dir  # singleton, pylint: disable=global-statement

    if _app_dir is None:
        if appdirs is not None:
            _app_dir = appdirs.user_data_dir("Nuitka", None)
        else:
            _app_dir = os.path.join(os.path.expanduser("~"), ".config", "Nuitka")

        # For people that build with HOME set this, e.g. Debian.
        if _app_dir.startswith(("/nonexistent/", "/sbuild-nonexistent/")):
            _app_dir = os.path.join(tempfile.gettempdir(), "Nuitka")

        makePath(_app_dir)

    return _app_dir

Allow overriding Nuitka cache dir via environment.