# Copyright 2019 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
#
#     https://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 typing

if typing.TYPE_CHECKING:
    from google.cloud import bigquery


def update_routine(routine_id: str) -> "bigquery.Routine":
    # [START bigquery_update_routine]

    from google.cloud import bigquery

    # Construct a BigQuery client object.
    client = bigquery.Client()

    # TODO(developer): Set the fully-qualified ID for the routine.
    # routine_id = "my-project.my_dataset.my_routine"

    routine = client.get_routine(routine_id)

    routine.body = "x * 4"

    routine = client.update_routine(
        routine,
        [
            "body",
            # Due to a limitation of the API,
            # all fields are required, not just
            # those that have been updated.
            "arguments",
            "language",
            "type_",
            "return_type",
        ],
    )  # Make an API request.
    # [END bigquery_update_routine]
    return routine