/**
 * 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.sentry.core.model.kafka;

import com.google.common.collect.ImmutableList;
import org.apache.sentry.core.common.BitFieldActionFactory;
import org.apache.sentry.core.common.ImplyMethodType;
import org.apache.sentry.core.common.Model;
import org.apache.sentry.core.common.validator.PrivilegeValidator;
import org.apache.sentry.core.model.kafka.validator.KafkaPrivilegeValidator;

import java.util.HashMap;
import java.util.Map;

public class KafkaPrivilegeModel implements Model {

  private Map<String, ImplyMethodType> implyMethodMap;
  private BitFieldActionFactory bitFieldActionFactory;
  private static KafkaPrivilegeModel kafkaPrivilegeModel = new KafkaPrivilegeModel();

  private KafkaPrivilegeModel() {
    implyMethodMap = new HashMap<String, ImplyMethodType>();
    bitFieldActionFactory = KafkaActionFactory.getInstance();

    implyMethodMap.put(KafkaAuthorizable.AuthorizableType.CLUSTER.name().toLowerCase(),
        ImplyMethodType.STRING);
    implyMethodMap.put(KafkaAuthorizable.AuthorizableType.HOST.name().toLowerCase(),
        ImplyMethodType.STRING);
    implyMethodMap.put(KafkaAuthorizable.AuthorizableType.TOPIC.name().toLowerCase(),
        ImplyMethodType.STRING_CASE_SENSITIVE);
    implyMethodMap.put(KafkaAuthorizable.AuthorizableType.CONSUMERGROUP.name().toLowerCase(),
        ImplyMethodType.STRING_CASE_SENSITIVE);
    implyMethodMap.put(KafkaAuthorizable.AuthorizableType.TRANSACTIONALID.name().toLowerCase(),
        ImplyMethodType.STRING_CASE_SENSITIVE);
  }

  @Override
  public Map<String, ImplyMethodType> getImplyMethodMap() {
    return implyMethodMap;
  }

  @Override
  public BitFieldActionFactory getBitFieldActionFactory() {
    return bitFieldActionFactory;
  }

  public static KafkaPrivilegeModel getInstance() {
    return kafkaPrivilegeModel;
  }

  public ImmutableList<PrivilegeValidator> getPrivilegeValidators() {
    return ImmutableList.<PrivilegeValidator>of(new KafkaPrivilegeValidator());
  }

}