#!/usr/bin/env python
# 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
#
#     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.
"""This code example sends an invitation email to a user.

The invitation is to manage a customer account with a desired access role.
"""


import argparse
import sys

from google.ads.googleads.client import GoogleAdsClient
from google.ads.googleads.errors import GoogleAdsException


def main(client, customer_id, email_address, access_role):
    """The main method that creates all necessary entities for the example.

    Args:
        client: An initialized GoogleAdsClient instance.
        customer_id: The client customer ID str.
        email_address: The email address for the user receiving the invitation.
        access_role: The desired access role for the invitee.
    """
    service = client.get_service("CustomerUserAccessInvitationService")
    # [START invite_user_with_access_role]
    invitation_operation = client.get_type(
        "CustomerUserAccessInvitationOperation"
    )
    invitation = invitation_operation.create
    invitation.email_address = email_address
    invitation.access_role = client.enums.AccessRoleEnum[access_role].value

    response = service.mutate_customer_user_access_invitation(
        customer_id=customer_id, operation=invitation_operation
    )
    print(
        "Customer user access invitation was sent for "
        f"customer ID: '{customer_id}', "
        f"email address {email_address}, and "
        f"access role {access_role}. The invitation resource name is: "
        f"{response.result.resource_name}"
    )
    # [END invite_user_with_access_role]


if __name__ == "__main__":
    # GoogleAdsClient will read the google-ads.yaml configuration file in the
    # home directory if none is specified.
    googleads_client = GoogleAdsClient.load_from_storage(version="v12")

    parser = argparse.ArgumentParser(
        description=(
            "Sends an invitation email to a user to manage a customer "
            "account with a desired access role."
        )
    )
    # The following argument(s) should be provided to run the example.
    parser.add_argument(
        "-c",
        "--customer_id",
        type=str,
        required=True,
        help="The Google Ads customer ID.",
    )
    parser.add_argument(
        "-e",
        "--email_address",
        type=str,
        required=True,
        help="The email address of the user to send the invitation to.",
    )
    parser.add_argument(
        "-a",
        "--access_role",
        type=str,
        required=True,
        choices=[e.name for e in googleads_client.enums.AccessRoleEnum],
        help="The updated user access role.",
    )
    args = parser.parse_args()

    try:
        main(
            googleads_client,
            args.customer_id,
            args.email_address,
            args.access_role,
        )
    except GoogleAdsException as ex:
        print(
            f'Request with ID "{ex.request_id}" failed with status '
            f'"{ex.error.code().name}" and includes the following errors:'
        )
        for error in ex.failure.errors:
            print(f'\tError with message "{error.message}".')
            if error.location:
                for field_path_element in error.location.field_path_elements:
                    print(f"\t\tOn field: {field_path_element.field_name}")
        sys.exit(1)
