/*
 * Copyright Hyperledger Besu Contributors.
 *
 * 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.ethereum.api.jsonrpc.internal.methods.engine;

import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;

import org.hyperledger.besu.ethereum.api.jsonrpc.RpcMethod;
import org.hyperledger.besu.ethereum.api.jsonrpc.internal.response.JsonRpcSuccessResponse;
import org.hyperledger.besu.ethereum.api.jsonrpc.internal.results.EngineGetPayloadResultV1;

import java.util.Optional;

import org.apache.tuweni.bytes.Bytes32;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.junit.MockitoJUnitRunner;

@RunWith(MockitoJUnitRunner.class)
public class EngineGetPayloadV1Test extends AbstractEngineGetPayloadTest {

  public EngineGetPayloadV1Test() {
    super(EngineGetPayloadV1::new);
  }

  @Override
  @Test
  public void shouldReturnExpectedMethodName() {
    assertThat(method.getName()).isEqualTo("engine_getPayloadV1");
  }

  @Override
  @Test
  public void shouldReturnBlockForKnownPayloadId() {
    final var resp = resp(RpcMethod.ENGINE_GET_PAYLOAD_V1.getMethodName(), mockPid);
    assertThat(resp).isInstanceOf(JsonRpcSuccessResponse.class);
    Optional.of(resp)
        .map(JsonRpcSuccessResponse.class::cast)
        .ifPresent(
            r -> {
              assertThat(r.getResult()).isInstanceOf(EngineGetPayloadResultV1.class);
              final EngineGetPayloadResultV1 res = (EngineGetPayloadResultV1) r.getResult();
              assertThat(res.getHash()).isEqualTo(mockHeader.getHash().toString());
              assertThat(res.getPrevRandao())
                  .isEqualTo(mockHeader.getPrevRandao().map(Bytes32::toString).orElse(""));
            });
    verify(engineCallListener, times(1)).executionEngineCalled();
  }

  @Override
  protected String getMethodName() {
    return RpcMethod.ENGINE_GET_PAYLOAD_V1.getMethodName();
  }
}
