/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.hadoop.ozone.web.ozShell.keys;

import org.apache.hadoop.ozone.client.OzoneBucket;
import org.apache.hadoop.ozone.client.OzoneClient;
import org.apache.hadoop.ozone.client.OzoneVolume;
import org.apache.hadoop.ozone.web.ozShell.Handler;
import org.apache.hadoop.ozone.web.ozShell.OzoneAddress;
import org.apache.hadoop.ozone.web.ozShell.Shell;

import picocli.CommandLine.Command;
import picocli.CommandLine.Parameters;

/**
 * Executes Delete Key.
 */
@Command(name = "delete",
    description = "deletes an existing key")
public class DeleteKeyHandler extends Handler {

  @Parameters(arity = "1..1", description = Shell.OZONE_KEY_URI_DESCRIPTION)
  private String uri;

  /**
   * Executes the Client Calls.
   */
  @Override
  public Void call() throws Exception {

    OzoneAddress address = new OzoneAddress(uri);
    address.ensureKeyAddress();
    OzoneClient client = address.createClient(createOzoneConfiguration());

    String volumeName = address.getVolumeName();
    String bucketName = address.getBucketName();
    String keyName = address.getKeyName();


    if (isVerbose()) {
      System.out.printf("Volume Name : %s%n", volumeName);
      System.out.printf("Bucket Name : %s%n", bucketName);
      System.out.printf("Key Name : %s%n", keyName);
    }

    OzoneVolume vol = client.getObjectStore().getVolume(volumeName);
    OzoneBucket bucket = vol.getBucket(bucketName);
    bucket.deleteKey(keyName);
    return null;
  }
}