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# Copyright (c) 2022 Cisco and/or its affiliates.
# 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.

"""Compile static assets.
"""

from flask import current_app as app
from flask_assets import Bundle


def compile_static_assets(assets):
    """Compile stylesheets if in development mode.

    :param assets: Flask-Assets Environment.
    :type assets: Environment
    :returns: Compiled stylesheets.
    :rtype: Environment
    """

    assets.auto_build = True
    assets.debug = False
    less_bundle = Bundle(
        u"less/*.less",
        filters=u"less,cssmin",
        output=u"dist/css/styles.css",
        extra={u"rel": u"stylesheet/less"},
    )
    assets.register(u"less_all", less_bundle)
    if app.config[u"FLASK_ENV"] == u"development":
        less_bundle.build()

    return assets