# Copyright 2015 Rackspace US, Inc.
#
#    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.

import os


def builder_inited(app):
    theme_dir = os.path.join(os.path.dirname(__file__), 'theme')
    app.info('Using openstackdocstheme Sphinx theme from %s' % theme_dir)
    # Insert our theme directory at the front of the search path and
    # force the theme setting to use the one in the package. This is
    # done here, instead of in setup(), because conf.py is read after
    # setup() runs, so if the conf contains these values the user
    # values overwrite these. That's not bad for the theme, but it
    # breaks the search path.
    app.config.html_theme_path.insert(0, theme_dir)
    # Set the theme name
    app.config.html_theme = 'openstackdocstheme'
    # Re-initialize the builder, if it has the method for setting up
    # the templates and theme.
    if hasattr(app.builder, 'init_templates'):
        app.builder.init_templates()


def get_html_theme_path():
    """Return the directory containing HTML theme for local builds."""
    pkg_dir = os.path.abspath(os.path.dirname(__file__))
    return os.path.join(pkg_dir, 'theme')


def setup(app):
    app.connect('builder-inited', builder_inited)