# Copyright (C) 2008-2017 by the Free Software Foundation, Inc.
#
# This file is part of GNU Mailman.
#
# GNU Mailman 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.
#
# GNU Mailman 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
# GNU Mailman.  If not, see <http://www.gnu.org/licenses/>.

"""Various plugin helpers."""

from lazr.config import as_boolean
from mailman.config import config
from mailman.interfaces.plugin import IPlugin
from mailman.utilities.modules import find_name
from public import public
from zope.interface.verify import verifyObject


@public
def initialize():
    """Initialize all enabled plugins."""
    for name, plugin_config in config.plugin_configs:
        plugin_class_path = plugin_config['class']
        if as_boolean(plugin_config.enable) and plugin_class_path:
            plugin_class = find_name(plugin_class_path)
            plugin = plugin_class()
            verifyObject(IPlugin, plugin)
            plugin.name = name
            assert plugin.name not in config.plugins, (
                'Duplicate plugin "{}" found in {}'.format(
                    plugin.name, plugin_class))
            config.plugins[plugin.name] = plugin