# Copyright 2020 Google LLC
#
# 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.

"""Function used in Worker tests of handling HTTP functions."""

from flask import render_template


def function(request):
    """Test HTTP function whose behavior depends on the given mode.

    The function returns a success, a failure, or throws an exception, depending
    on the given mode.

    Args:
      request: The HTTP request which triggered this function. Must contain name
        of the requested mode in the 'mode' field in JSON document in request
        body.

    Returns:
      Value and status code defined for the given mode.

    Raises:
      Exception: Thrown when requested in the incoming mode specification.
    """
    if request.args and "message" in request.args:
        message = request.args.get("message")
    elif request.get_json() and "message" in request.get_json():
        message = request.get_json()["message"]
    else:
        message = "Hello World!"
    return render_template("hello.html", name=message)
