/*
 * Copyright ConsenSys AG.
 *
 * 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
package org.hyperledger.besu.consensus.common;

import org.hyperledger.besu.datatypes.Address;

import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Optional;

/** The Bft validator overrides. */
public class BftValidatorOverrides {

  private final Map<Long, List<Address>> overriddenValidators;

  /**
   * Instantiates a new Bft validator overrides.
   *
   * @param overriddenValidators the overridden validators
   */
  public BftValidatorOverrides(final Map<Long, List<Address>> overriddenValidators) {
    this.overriddenValidators = overriddenValidators;
  }

  /**
   * Gets for block.
   *
   * @param blockNumber the block number
   * @return validators address
   */
  public Optional<Collection<Address>> getForBlock(final long blockNumber) {
    return Optional.ofNullable(overriddenValidators.get(blockNumber));
  }
}
