/*
 * 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.qbft.pki;

import org.hyperledger.besu.consensus.common.bft.BftBlockHashing;
import org.hyperledger.besu.consensus.common.bft.BftExtraData;
import org.hyperledger.besu.datatypes.Hash;
import org.hyperledger.besu.ethereum.core.BlockHeader;

/** The Pki qbft block hashing. */
public class PkiQbftBlockHashing {

  private final PkiQbftExtraDataCodec extraDataCodec;

  /**
   * Instantiates a new Pki qbft block hashing.
   *
   * @param extraDataCodec the extra data codec
   */
  public PkiQbftBlockHashing(final PkiQbftExtraDataCodec extraDataCodec) {
    this.extraDataCodec = extraDataCodec;
  }

  /**
   * Calculate hash of bft block for cms signature.
   *
   * @param header the header
   * @return the hash
   */
  public Hash calculateHashOfBftBlockForCmsSignature(final BlockHeader header) {
    final BftExtraData bftExtraData = extraDataCodec.decode(header);
    return Hash.hash(
        BftBlockHashing.serializeHeader(
            header, () -> extraDataCodec.encodeWithoutCms(bftExtraData), extraDataCodec));
  }
}
