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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.reporting;

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

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

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

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

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

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

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

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

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

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 org.joda.time.DateTime;

/**

 * This example gets stats for all campaigns with an impression in the last

 * week. To add a campaign, run AddCampaigns.java.

 *

 * @author Kevin Winter

 */

public class GetCampaignStats {

  private static final int PAGE_SIZE = 100;

  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();

    AdWordsServices adWordsServices = new AdWordsServices();

    runExample(adWordsServices, session);

  }

  public static void runExample(

      AdWordsServices adWordsServices, AdWordsSession session) throws Exception {

    // Get the CampaignService.

    CampaignServiceInterface campaignService =

        adWordsServices.get(session, CampaignServiceInterface.class);

    int offset = 0;

    // Create selector.

    Selector selector = new Selector();

    selector.setFields(new String[] {"Id", "Name", "Impressions", "Clicks", "Cost", "Ctr"});

    selector.setPredicates(new Predicate[] {new Predicate("Impressions",

        PredicateOperator.GREATER_THAN, new String[] {"0"})});

    String oneWeekAgo = new DateTime().minusDays(7).toString("yyyyMMdd");

    String yesterday = new DateTime().minusDays(1).toString("yyyyMMdd");

    selector.setDateRange(new DateRange(oneWeekAgo, yesterday));

    selector.setPaging(new Paging(offset, PAGE_SIZE));

    CampaignPage page = null;

    do {

      // Get all campaigns.

      page = campaignService.get(selector);

      // Display campaigns.

      if (page.getEntries() != null) {

        for (Campaign campaign : page.getEntries()) {

          System.out.printf("Campaign with id \"%d\" and name \"%s\" had the following stats "

              + "during the last week.\n", campaign.getId(), campaign.getName());

          System.out.printf("  Impressions: %d\n", campaign.getCampaignStats().getImpressions());

          System.out.printf("  Clicks: %d\n", campaign.getCampaignStats().getClicks());

          System.out.printf("  Cost: %.02f\n", campaign.getCampaignStats().getCost()

              .getMicroAmount() / 1000000.0);

          System.out.printf("  CTR: %.02f %%\n", campaign.getCampaignStats().getCtr() * 100.0);

        }

      } else {

        System.out.println("No matching campaigns were found.");

      }

      offset += PAGE_SIZE;

      selector.getPaging().setStartIndex(offset);

    } while (offset < page.getTotalNumEntries());

  }

}