#
# Copyright (c) 2021-2025 ahriman team.
#
# This file is part of ahriman
# (see https://github.com/arcan1s/ahriman).
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import importlib
import sys

from tox.config.sets import EnvConfigSet
from tox.plugin import impl
from tox.session.state import State
from tox.tox_env.api import ToxEnv


@impl
def tox_add_env_config(env_conf: EnvConfigSet, _: State) -> None:
    """
    append plugin options to the configuration keys

    Args:
        env_conf(EnvConfigSet): environment configuration set
    """
    env_conf.add_config(
        keys=["dynamic_version"],
        of_type=str,
        default="",
        desc="import version from",
    )


@impl
def tox_before_run_commands(tox_env: ToxEnv) -> None:
    """
    extract version dynamically and set VERSION environment variable

    Args:
        tox_env(ToxEnv): current tox environment
    """
    if not tox_env.conf["dynamic_version"]:
        return

    set_env = tox_env.conf["set_env"]
    if "PYTHONPATH" in set_env:
        sys.path.append(set_env.load("PYTHONPATH"))

    module_name, variable_name = tox_env.conf["dynamic_version"].rsplit(".", maxsplit=1)
    module = importlib.import_module(module_name)

    set_env.update({"VERSION": getattr(module, variable_name)})