# -*- coding: utf-8 -*- #
# Copyright 2018 Google Inc. All Rights Reserved.
#
# 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.
"""A library for working with environment variables on functions."""

from __future__ import absolute_import
from __future__ import division
from __future__ import unicode_literals

from googlecloudsdk.api_lib.functions import util


def GetFunctionEnvVarsAsDict(function):
  if function.environmentVariables:
    return {
        prop.key: prop.value
        for prop in function.environmentVariables.additionalProperties
    }
  else:
    return {}


def DictToEnvVarsProperty(env_vars=None):
  """Set function environment variables.

  Args:
    env_vars: a dict of environment variables
  Returns:
    An EnvironmentVariablesValue with the env vars from env_vars
  """
  if not env_vars:
    return None
  messages = util.GetApiMessagesModule()
  env_vars_class = messages.CloudFunction.EnvironmentVariablesValue
  return env_vars_class(additionalProperties=[
      env_vars_class.AdditionalProperty(key=key, value=value)
      for key, value in sorted(env_vars.items())])
