Merchant API code sample to create a promotion data source.

### 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.datasources.v1;
    import com.google.api.gax.core.FixedCredentialsProvider;
    import com.google.auth.oauth2.GoogleCredentials;
    import com.google.shopping.merchant.datasources.v1.CreateDataSourceRequest;
    import com.google.shopping.merchant.datasources.v1.DataSource;
    import com.google.shopping.merchant.datasources.v1.DataSourcesServiceClient;
    import com.google.shopping.merchant.datasources.v1.DataSourcesServiceSettings;
    import com.google.shopping.merchant.datasources.v1.PromotionDataSource;
    import shopping.merchant.samples.utils.Authenticator;
    import shopping.merchant.samples.utils.Config;

    /** This class demonstrates how to create a promotion datasource. */
    public class CreatePromotionDataSourceSample {

      private static String getParent(String merchantId) {
        return String.format("accounts/%s", merchantId);
      }

      public static String createDataSource(Config config, String displayName) throws Exception {
        GoogleCredentials credential = new Authenticator().authenticate();

        DataSourcesServiceSettings dataSourcesServiceSettings =
            DataSourcesServiceSettings.newBuilder()
                .setCredentialsProvider(FixedCredentialsProvider.create(credential))
                .build();

        String parent = getParent(config.getAccountId().toString());

        try (DataSourcesServiceClient dataSourcesServiceClient =
            DataSourcesServiceClient.create(dataSourcesServiceSettings)) {

          CreateDataSourceRequest request =
              CreateDataSourceRequest.newBuilder()
                  .setParent(parent)
                  .setDataSource(
                      DataSource.newBuilder()
                          .setDisplayName(displayName)
                          // PromotionDataSources
                          // can only be created for a specific `targetCountry` and `contentLanguage`
                          // combination.
                          .setPromotionDataSource(
                              PromotionDataSource.newBuilder()
                                  .setContentLanguage("en")
                                  .setTargetCountry("GB")
                                  .build())
                          .build())
                  .build();

          System.out.println("Sending Create Promotion DataSource request");
          DataSource response = dataSourcesServiceClient.createDataSource(request);
          System.out.println("Inserted DataSource Name below");
          System.out.println(response.getName());
          return response.getName();
        } catch (Exception e) {
          System.out.println(e);
          System.exit(1);
          return null;
        }
      }

      public static void main(String[] args) throws Exception {
        Config config = Config.load();
        // The displayed datasource name in the Merchant Center UI.
        String displayName = "British Promotions";

        createDataSource(config, displayName);
      }
    }

### PHP

    <?php
    /**
     * 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.
     */

    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\DataSources\V1\Client\DataSourcesServiceClient;
    use Google\Shopping\Merchant\DataSources\V1\CreateDataSourceRequest;
    use Google\Shopping\Merchant\DataSources\V1\DataSource;
    use Google\Shopping\Merchant\DataSources\V1\PromotionDataSource;

    /**
     * This class demonstrates how to create a promotion datasource.
     */

    class CreatePromotionDataSource
    {
        /**
         * Creates a new PromotionDataSource.
         *
         * @param int    $merchantId The Merchant Center account ID.
         * @param string $displayName The displayed datasource name in the Merchant Center UI.
         * @return string The name of the newly created PromotionDataSource.
         */
        function createPromotionDataSourceSample(int $merchantId, string $displayName): string
        {
            // Gets the OAuth credentials to make the request.
            $credentials = Authentication::useServiceAccountOrTokenFile();

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

            // Creates a client.
            $dataSourcesServiceClient = new DataSourcesServiceClient($options);

            $parent = sprintf('accounts/%s', $merchantId);

            // Creates the data source.
            $dataSource = (new DataSource())
                ->setDisplayName($displayName)
                ->setPromotionDataSource(
                    (new PromotionDataSource())
                        ->setContentLanguage('en')
                        ->setTargetCountry('GB')
                );

            // Creates the request.
            $request = (new CreateDataSourceRequest())
                ->setParent($parent)
                ->setDataSource($dataSource);

            // Sends the request to the API.
            try {
                print('Sending Create Promotion DataSource request' . PHP_EOL);
                $response = $dataSourcesServiceClient->createDataSource($request);
                print('Inserted DataSource Name below' . PHP_EOL);
                print($response->getName() . PHP_EOL);
                return $response->getName();
            } catch (ApiException $ex) {
                printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
                return '';
            }
        }

        // Helper to execute the sample.
        public function callSample(): void
        {
            $config = Config::generateConfig();
            // The Merchant Center Account ID.
            $merchantId = $config['accountId'];

            // The displayed datasource name in the Merchant Center UI.
            $displayName = 'British Promotions';

            $this->createPromotionDataSourceSample($merchantId, $displayName);
        }
    }

    $sample = new CreatePromotionDataSource();
    $sample->callSample();

### Python

    # -*- coding: utf-8 -*-
    # 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
    #
    #     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 module to create a Promotion DataSource."""

    from examples.authentication import configuration
    from examples.authentication import generate_user_credentials
    from google.shopping import merchant_datasources_v1

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


    def create_promotion_data_source():
      """Creates a `DataSource` resource."""

      # Gets OAuth Credentials.
      credentials = generate_user_credentials.main()

      # Creates a client.
      client = merchant_datasources_v1.DataSourcesServiceClient(
          credentials=credentials
      )

      # Creates a PromotionDataSource.
      # PromotionDataSources
      # can only be created for a specific `targetCountry` and `contentLanguage`
      # combination.
      promotion_datasource = merchant_datasources_v1.PromotionDataSource()
      promotion_datasource.target_country = "CH"
      promotion_datasource.content_language = "fr"

      # Creates a DataSource and populates its attributes.
      data_source = merchant_datasources_v1.DataSource()
      data_source.display_name = "Example DataSource"
      data_source.promotion_data_source = promotion_datasource

      # Creates the request.
      request = merchant_datasources_v1.CreateDataSourceRequest(
          parent=_PARENT, data_source=data_source
      )

      # Makes the request and catches and prints any error messages.
      try:
        response = client.create_data_source(request=request)
        print(f"DataSource successfully created: {response}")
      except RuntimeError as e:
        print("DataSource creation failed")
        print(e)


    if __name__ == "__main__":
      create_promotion_data_source()