/*
 * 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.hyperledger.besu.ethereum.api.jsonrpc.internal.methods.ExecutionEngineJsonRpcMethod.EngineStatus.INVALID;
import static org.hyperledger.besu.ethereum.api.jsonrpc.internal.methods.ExecutionEngineJsonRpcMethod.EngineStatus.INVALID_BLOCK_HASH;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.atLeastOnce;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import org.hyperledger.besu.datatypes.Hash;
import org.hyperledger.besu.ethereum.api.jsonrpc.internal.methods.ExecutionEngineJsonRpcMethod;
import org.hyperledger.besu.ethereum.api.jsonrpc.internal.results.EnginePayloadStatusResult;
import org.hyperledger.besu.ethereum.core.BlockHeader;

import java.util.Collections;
import java.util.Optional;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.junit.MockitoJUnitRunner;

@RunWith(MockitoJUnitRunner.class)
public class EngineNewPayloadV1Test extends AbstractEngineNewPayloadTest {

  public EngineNewPayloadV1Test() {
    super(EngineNewPayloadV1::new);
  }

  @Override
  @Test
  public void shouldReturnExpectedMethodName() {
    assertThat(method.getName()).isEqualTo("engine_newPayloadV1");
  }

  @Test
  public void shouldReturnInvalidOnBadTerminalBlock() {
    BlockHeader mockHeader = createBlockHeader(Optional.empty(), Optional.empty());
    when(blockchain.getBlockByHash(mockHeader.getHash())).thenReturn(Optional.empty());
    when(blockchain.getBlockHeader(mockHeader.getParentHash()))
        .thenReturn(Optional.of(mock(BlockHeader.class)));
    when(mergeCoordinator.latestValidAncestorDescendsFromTerminal(any(BlockHeader.class)))
        .thenReturn(false);

    var resp = resp(mockPayload(mockHeader, Collections.emptyList()));

    EnginePayloadStatusResult res = fromSuccessResp(resp);
    assertThat(res.getLatestValidHash()).isEqualTo(Optional.of(Hash.ZERO));
    assertThat(res.getStatusAsString()).isEqualTo(INVALID.name());
    verify(mergeCoordinator, atLeastOnce()).addBadBlock(any(), any());
    verify(engineCallListener, times(1)).executionEngineCalled();
  }

  @Override
  protected boolean validateTerminalPoWBlock() {
    return true;
  }

  @Override
  protected ExecutionEngineJsonRpcMethod.EngineStatus getExpectedInvalidBlockHashStatus() {
    return INVALID_BLOCK_HASH;
  }
}
