// snippet-sourcedescription:[rekognition-image-java-detect-labels.java demonstrates how to detect labels in an image loaded from an S3 Bucket.]
// snippet-service:[rekognition]
// snippet-keyword:[Java]
// snippet-sourcesyntax:[java]
// snippet-keyword:[Amazon Rekognition]
// snippet-keyword:[Code Sample]
// snippet-keyword:[DetectLabels]
// snippet-keyword:[S3 Bucket]
// snippet-keyword:[Image]
// snippet-sourcetype:[full-example]
// snippet-sourcedate:[2019-01-18]
// snippet-sourceauthor:[reesch(AWS)]
// snippet-start:[rekognition.java.rekognition-image-java-detect-labels.complete]

/**
 * Copyright 2010-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * This file is licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License. A copy of
 * the License is located at
 *
 * http://aws.amazon.com/apache2.0/
 *
 * This file 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 aws.example.rekognition.image;
import java.util.List;

import com.amazonaws.services.rekognition.model.BoundingBox;
import com.amazonaws.services.rekognition.model.DetectLabelsRequest;
import com.amazonaws.services.rekognition.model.DetectLabelsResult;
import com.amazonaws.services.rekognition.model.Image;
import com.amazonaws.services.rekognition.model.Instance;
import com.amazonaws.services.rekognition.model.Label;
import com.amazonaws.services.rekognition.model.Parent;
import com.amazonaws.services.rekognition.model.S3Object;
import com.amazonaws.services.rekognition.AmazonRekognition;
import com.amazonaws.services.rekognition.AmazonRekognitionClientBuilder;
import com.amazonaws.services.rekognition.model.AmazonRekognitionException;

public class DetectLabels {

    public static void main(String[] args) throws Exception {
        // Change bucket and photo to your S3 Bucket and image.
        String photo = "photo";
        String bucket = "bucket";

        AmazonRekognition rekognitionClient = AmazonRekognitionClientBuilder.defaultClient();

        DetectLabelsRequest request = new DetectLabelsRequest()
                .withImage(new Image().withS3Object(new S3Object().withName(photo).withBucket(bucket)))
                .withMaxLabels(10).withMinConfidence(75F);

        try {
            DetectLabelsResult result = rekognitionClient.detectLabels(request);
            List<Label> labels = result.getLabels();

            System.out.println("Detected labels for " + photo + "\n");
            for (Label label : labels) {
                System.out.println("Label: " + label.getName());
                System.out.println("Confidence: " + label.getConfidence().toString() + "\n");

                List<Instance> instances = label.getInstances();
                System.out.println("Instances of " + label.getName());
                if (instances.isEmpty()) {
                    System.out.println("  " + "None");
                } else {
                    for (Instance instance : instances) {
                        System.out.println("  Confidence: " + instance.getConfidence().toString());
                        System.out.println("  Bounding box: " + instance.getBoundingBox().toString());
                    }
                }
                System.out.println("Parent labels for " + label.getName() + ":");
                List<Parent> parents = label.getParents();
                if (parents.isEmpty()) {
                    System.out.println("  None");
                } else {
                    for (Parent parent : parents) {
                        System.out.println("  " + parent.getName());
                    }
                }
                System.out.println("--------------------");
                System.out.println();
               
            }
        } catch (AmazonRekognitionException e) {
            e.printStackTrace();
        }
    }
}
// snippet-end:[rekognition.java.rekognition-image-java-detect-labels.complete]