Merchant API code sample to propose an account service.

### Java

    // Copyright 2024 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.

    package shopping.merchant.samples.accounts.accountservices.v1;
    import com.google.api.gax.core.FixedCredentialsProvider;
    import com.google.auth.oauth2.GoogleCredentials;
    import com.google.shopping.merchant.accounts.v1.AccountAggregation;
    import com.google.shopping.merchant.accounts.v1.AccountService;
    import com.google.shopping.merchant.accounts.v1.AccountServicesServiceClient;
    import com.google.shopping.merchant.accounts.v1.AccountServicesServiceSettings;
    import com.google.shopping.merchant.accounts.v1.ProposeAccountServiceRequest;
    import java.math.BigInteger;
    import shopping.merchant.samples.utils.Authenticator;
    import shopping.merchant.samples.utils.Config;

    /** This class demonstrates how to propose an account service. */
    public class ProposeAccountServiceSample {

      private static String toAccountName(BigInteger accountId) {
        return String.format("accounts/%d", accountId);
      }

      public static void proposeAccountService(Config config, BigInteger providerId) throws Exception {

        GoogleCredentials credential = new Authenticator().authenticate();

        AccountServicesServiceSettings accountServiceServiceSettings =
            AccountServicesServiceSettings.newBuilder()
                .setCredentialsProvider(FixedCredentialsProvider.create(credential))
                .build();

        try (AccountServicesServiceClient accountServiceServiceClient =
            AccountServicesServiceClient.create(accountServiceServiceSettings)) {

          ProposeAccountServiceRequest request =
              ProposeAccountServiceRequest.newBuilder()
                  .setParent(toAccountName(config.getAccountId()))
                  .setProvider(toAccountName(providerId))
                  .setAccountService(
                      AccountService.newBuilder()
                          .setAccountAggregation(AccountAggregation.getDefaultInstance())
                          .build())
                  .build();

          System.out.println("Sending Propose AccountService request");
          AccountService response = accountServiceServiceClient.proposeAccountService(request);
          System.out.println("Proposed AccountService below");
          System.out.println(response);
        } catch (Exception e) {
          System.out.println(e);
        }
      }

      public static void main(String[] args) throws Exception {
        Config config = Config.load();

        // Update this with the Merchant Center provider ID you want to get the relationship for.
        BigInteger providerId = BigInteger.valueOf(111);
        proposeAccountService(config, providerId);
      }
    }

### PHP

    <?php
    /**
     * Copyright 2025 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.
     */

    require_once __DIR__ . '/../../../../vendor/autoload.php';
    require_once __DIR__ . '/../../../Authentication/Authentication.php';
    require_once __DIR__ . '/../../../Authentication/Config.php';

    use Google\ApiCore\ApiException;
    use Google\Shopping\Merchant\Accounts\V1\AccountAggregation;
    use Google\Shopping\Merchant\Accounts\V1\AccountService;
    use Google\Shopping\Merchant\Accounts\V1\Client\AccountServicesServiceClient;
    use Google\Shopping\Merchant\Accounts\V1\ProposeAccountServiceRequest;

    /**
     * This class demonstrates how to propose an account service.
     */
    class ProposeAccountServiceSample
    {
        /**
         * A helper function to create the account name string.
         *
         * @param string $accountId The ID of the account.
         *
         * @return string The account name has the format: `accounts/{account_id}`
         */
        private static function toAccountName(string $accountId): string
        {
            return sprintf('accounts/%s', $accountId);
        }

        /**
         * Proposes a new account service.
         *
         * @param array $config The configuration data used for authentication and
         *     getting the account ID.
         * @param string $providerId The ID of the provider account.
         */
        public static function proposeAccountService(
            array $config,
            string $providerId
        ): void {
            // Gets the OAuth credentials to make the request.
            $credentials = Authentication::useServiceAccountOrTokenFile();

            // Creates options containing credentials for the client to use.
            $options = ['credentials' => $credentials];

            // Creates a client.
            $accountServicesServiceClient = new AccountServicesServiceClient($options);

            // Calls the API and catches and prints any network failures/errors.
            try {
                $accountAggregation = new AccountAggregation();
                $accountService = (new AccountService())
                    ->setAccountAggregation($accountAggregation);

                $request = (new ProposeAccountServiceRequest())
                    ->setParent(self::toAccountName($config['accountId']))
                    ->setProvider(self::toAccountName($providerId))
                    ->setAccountService($accountService);

                print "Sending Propose AccountService request\n";
                $response = $accountServicesServiceClient->proposeAccountService($request);
                print "Proposed AccountService below\n";
                print $response->serializeToJsonString(true) . PHP_EOL;
            } catch (ApiException $e) {
                printf("An error has occurred: %s%s", $e->getMessage(), PHP_EOL);
            }
        }

        /**
         * Helper to execute the sample.
         */
        public function callSample(): void
        {
            $config = Config::generateConfig();

            // Update this with the Merchant Center provider ID you want to get the
            // relationship for.
            $providerId = 111;
            self::proposeAccountService($config, $providerId);
        }
    }

    // Run the script
    $sample = new ProposeAccountServiceSample();
    $sample->callSample();

### Python

    # -*- coding: utf-8 -*-
    # Copyright 2025 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.
    """This class demonstrates how to propose an account service."""

    from examples.authentication import configuration
    from examples.authentication import generate_user_credentials
    from google.shopping.merchant_accounts_v1 import AccountAggregation
    from google.shopping.merchant_accounts_v1 import AccountService
    from google.shopping.merchant_accounts_v1 import AccountServicesServiceClient
    from google.shopping.merchant_accounts_v1 import ProposeAccountServiceRequest

    _ACCOUNT = configuration.Configuration().read_merchant_info()
    _PARENT = f"accounts/{_ACCOUNT}"


    def propose_account_service(provider_id: int) -> None:
      """Proposes an account service.

      Args:
        provider_id: The Merchant Center ID of the provider.
      """
      # Gets OAuth Credentials.
      credentials = generate_user_credentials.main()

      # Creates a client.
      client = AccountServicesServiceClient(credentials=credentials)

      # Creates the provider resource name from the provider ID.
      provider = f"accounts/{provider_id}"

      # Creates an AccountService object.
      # For this request, only `account_aggregation` is needed.
      account_service = AccountService()
      account_service.account_aggregation = AccountAggregation()

      # Creates the request.
      request = ProposeAccountServiceRequest(
          parent=_PARENT,
          provider=provider,
          account_service=account_service,
      )

      # Makes the request and catches and prints any error messages.
      try:
        print("Sending Propose AccountService request")
        response = client.propose_account_service(request=request)
        print("Proposed AccountService below")
        print(response)
      except RuntimeError as e:
        print(e)


    if __name__ == "__main__":
      # Update this with the Merchant Center provider ID you want to get the
      # relationship for.
      provider_id_ = 111
      propose_account_service(provider_id_)