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// Copyright 2012 Google Inc. All Rights Reserved.

//

// 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.

package adwords.axis.v201302.errorhandling;

import com.google.api.ads.adwords.axis.factory.AdWordsServices;

import com.google.api.ads.adwords.axis.v201302.cm.AdGroupAd;

import com.google.api.ads.adwords.axis.v201302.cm.AdGroupAdOperation;

import com.google.api.ads.adwords.axis.v201302.cm.AdGroupAdReturnValue;

import com.google.api.ads.adwords.axis.v201302.cm.AdGroupAdServiceInterface;

import com.google.api.ads.adwords.axis.v201302.cm.ApiError;

import com.google.api.ads.adwords.axis.v201302.cm.ApiException;

import com.google.api.ads.adwords.axis.v201302.cm.ExemptionRequest;

import com.google.api.ads.adwords.axis.v201302.cm.Operator;

import com.google.api.ads.adwords.axis.v201302.cm.PolicyViolationError;

import com.google.api.ads.adwords.axis.v201302.cm.TextAd;

import com.google.api.ads.adwords.lib.client.AdWordsSession;

import com.google.api.ads.common.lib.auth.OfflineCredentials;

import com.google.api.ads.common.lib.auth.OfflineCredentials.Api;

import com.google.api.client.auth.oauth2.Credential;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.HashSet;

import java.util.List;

import java.util.Set;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

/**

 * This example demonstrates how to handle policy violation errors.

 *

 * Credentials and properties in {@code fromFile()} are pulled from the

 * "ads.properties" file. See README for more info.

 *

 * Tags: AdGroupAdService.mutate

 *

 * Category: adx-exclude

 *

 * @author Adam Rogal

 */

public class HandlePolicyViolationError {

  private static Pattern operationIndexPattern = Pattern.compile("^.*operations\\[(\\d+)\\].*$");

  public static void main(String[] args) throws Exception {

    // Generate a refreshable OAuth2 credential similar to a ClientLogin token

    // and can be used in place of a service account.

    Credential oAuth2Credential = new OfflineCredentials.Builder()

        .forApi(Api.ADWORDS)

        .fromFile()

        .build()

        .generateCredential();

    // Construct an AdWordsSession.

    AdWordsSession session = new AdWordsSession.Builder()

        .fromFile()

        .withOAuth2Credential(oAuth2Credential)

        .build();

    long adGroupId = Long.parseLong("INSERT_ADGROUP_ID_HERE");

    AdWordsServices adWordsServices = new AdWordsServices();

    runExample(adWordsServices, session, adGroupId);

  }

  public static void runExample(

      AdWordsServices adWordsServices, AdWordsSession session, Long adGroupId) throws Exception {

    // Enable validateOnly mode.

    session.setValidateOnly(true);

    // Get the AdGroupAdService.

    AdGroupAdServiceInterface adGroupAdService =

        adWordsServices.get(session, AdGroupAdServiceInterface.class);

    // Create text ad that violates an exemptable policy. This ad will only

    // trigger an error in the production environment.

    TextAd exemptableTextAd = new TextAd();

    exemptableTextAd.setHeadline("Mars " + System.currentTimeMillis() + "!!!");

    exemptableTextAd.setDescription1("Visit the Red Planet in style.");

    exemptableTextAd.setDescription2("Low-gravity fun for everyone!");

    exemptableTextAd.setDisplayUrl("www.example.com");

    exemptableTextAd.setUrl("http://www.example.com/");

    // Create ad group ad.

    AdGroupAd exemptableAdGroupAd = new AdGroupAd();

    exemptableAdGroupAd.setAdGroupId(adGroupId);

    exemptableAdGroupAd.setAd(exemptableTextAd);

    // Create operations.

    AdGroupAdOperation exemptableOperation = new AdGroupAdOperation();

    exemptableOperation.setOperand(exemptableAdGroupAd);

    exemptableOperation.setOperator(Operator.ADD);

    // Create text ad that violates an non-exemptable policy.

    TextAd nonExemptableTextAd = new TextAd();

    nonExemptableTextAd.setHeadline("Mars Cruise with too long of a headline.");

    nonExemptableTextAd.setDescription1("Visit the Red Planet in style.");

    nonExemptableTextAd.setDescription2("Low-gravity fun for everyone.");

    nonExemptableTextAd.setDisplayUrl("www.example.com");

    nonExemptableTextAd.setUrl("http://www.example.com/");

    // Create ad group ad.

    AdGroupAd nonExemptableAdGroupAd = new AdGroupAd();

    nonExemptableAdGroupAd.setAdGroupId(adGroupId);

    nonExemptableAdGroupAd.setAd(nonExemptableTextAd);

    // Create operations.

    AdGroupAdOperation nonExemptableOperation = new AdGroupAdOperation();

    nonExemptableOperation.setOperand(nonExemptableAdGroupAd);

    nonExemptableOperation.setOperator(Operator.ADD);

    AdGroupAdOperation[] operations =

        new AdGroupAdOperation[] {exemptableOperation, nonExemptableOperation};

    try {

      // Validate the ads.

      AdGroupAdReturnValue result = adGroupAdService.mutate(operations);

    } catch (ApiException e) {

      Set<Integer> indicesToRemove = new HashSet<Integer>();

      for (ApiError error : e.getErrors()) {

        if (error instanceof PolicyViolationError) {

          PolicyViolationError policyViolationError = (PolicyViolationError) error;

          Matcher matcher = operationIndexPattern.matcher(error.getFieldPath());

          if (matcher.matches()) {

            int operationIndex = Integer.parseInt(matcher.group(1));

            AdGroupAdOperation operation = operations[operationIndex];

            System.out.printf("Ad with headline \"%s\" violated %s policy \"%s\".\n",

                ((TextAd) operation.getOperand().getAd()).getHeadline(), policyViolationError

                    .getIsExemptable() ? "exemptable" : "non-exemptable", policyViolationError

                    .getExternalPolicyName());

            if (policyViolationError.getIsExemptable()) {

              // Add exemption request to the operation.

              System.out.printf(

                  "Adding exemption request for policy name \"%s\" on text \"%s\".\n",

                  policyViolationError.getKey().getPolicyName(), policyViolationError.getKey()

                      .getViolatingText());

              List<ExemptionRequest> exemptionRequests =

                  new ArrayList<ExemptionRequest>(Arrays

                      .asList(operation.getExemptionRequests() == null

                          ? new ExemptionRequest[] {} : operation.getExemptionRequests()));

              exemptionRequests.add(new ExemptionRequest(policyViolationError.getKey()));

              operation

                  .setExemptionRequests(exemptionRequests.toArray(new ExemptionRequest[] {}));

            } else {

              // Remove non-exemptable operation.

              System.out.println("Removing non-exemptable operation at index " + operationIndex

                  + ".");

              indicesToRemove.add(operationIndex);

            }

          }

        } else {

          // Non-policy error returned.

          Matcher matcher = operationIndexPattern.matcher(error.getFieldPath());

          if (matcher.matches()) {

            int operationIndex = Integer.parseInt(matcher.group(1));

            AdGroupAdOperation operation = operations[operationIndex];

            System.out.printf("Ad with headline \"%s\" created non-policy error \"%s\".\n",

                ((TextAd) operation.getOperand().getAd()).getHeadline(), error.getErrorString());

            System.out.println("Removing non-exemptable operation at index " + operationIndex

                + ".");

            indicesToRemove.add(operationIndex);

          }

        }

      }

      // Remove operations that cannot be exempted.

      List<AdGroupAdOperation> remainingOperations = new ArrayList<AdGroupAdOperation>();

      for (int i = 0; i < operations.length; i++) {

        if (!indicesToRemove.contains(i)) {

          remainingOperations.add(operations[i]);

        }

      }

      operations = remainingOperations.toArray(new AdGroupAdOperation[]{});

    }

    if (operations.length > 0) {

      // Disable validateOnly so we can submit the AdGroupAds with exemptions.

      session.setValidateOnly(false);

      // Add ads with exemptions.

      AdGroupAdReturnValue result = adGroupAdService.mutate(operations);

      // Display ads.

      if (result != null && result.getValue() != null) {

        for (AdGroupAd adGroupAdResult : result.getValue()) {

          System.out.printf("Ad with id \"%s\" and headline \"%s\" was added.\n", adGroupAdResult

              .getAd().getId(), ((TextAd) adGroupAdResult.getAd()).getHeadline());

        }

      }

    } else {

      System.out.println("No ads were added.");

    }

  }

}