content: /*
   * 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.camel.component.google.functions.mock;
  
  import java.util.ArrayList;
  import java.util.LinkedList;
  import java.util.List;
  import java.util.Queue;
  
  import com.google.api.gax.grpc.testing.MockGrpcService;
  import com.google.cloud.functions.v1.CallFunctionRequest;
  import com.google.cloud.functions.v1.CallFunctionResponse;
  import com.google.cloud.functions.v1.CloudFunction;
  import com.google.cloud.functions.v1.CloudFunctionsServiceGrpc.CloudFunctionsServiceImplBase;
  import com.google.cloud.functions.v1.CreateFunctionRequest;
  import com.google.cloud.functions.v1.DeleteFunctionRequest;
  import com.google.cloud.functions.v1.GenerateDownloadUrlRequest;
  import com.google.cloud.functions.v1.GenerateDownloadUrlResponse;
  import com.google.cloud.functions.v1.GenerateUploadUrlRequest;
  import com.google.cloud.functions.v1.GenerateUploadUrlResponse;
  import com.google.cloud.functions.v1.GetFunctionRequest;
  import com.google.cloud.functions.v1.ListFunctionsRequest;
  import com.google.cloud.functions.v1.ListFunctionsResponse;
  import com.google.cloud.functions.v1.UpdateFunctionRequest;
  import com.google.iam.v1.GetIamPolicyRequest;
  import com.google.iam.v1.Policy;
  import com.google.iam.v1.SetIamPolicyRequest;
  import com.google.iam.v1.TestIamPermissionsRequest;
  import com.google.iam.v1.TestIamPermissionsResponse;
  import com.google.longrunning.Operation;
  import com.google.protobuf.AbstractMessage;
  import io.grpc.ServerServiceDefinition;
  import io.grpc.stub.StreamObserver;
  
  public class MockCloudFunctionsService extends CloudFunctionsServiceImplBase implements MockGrpcService {
      private List<AbstractMessage> requests;
      private Queue<Object> responses;
  
      public MockCloudFunctionsService() {
          requests = new ArrayList<>();
          responses = new LinkedList<>();
      }
  
      public List<AbstractMessage> getRequests() {
          return requests;
      }
  
      public void addResponse(AbstractMessage response) {
          responses.add(response);
      }
  
      public void setResponses(List<AbstractMessage> responses) {
          this.responses = new LinkedList<Object>(responses);
      }
  
      public void addException(Exception exception) {
          responses.add(exception);
      }
  
      public void reset() {
          requests = new ArrayList<>();
          responses = new LinkedList<>();
      }
  
      @Override
      public void listFunctions(ListFunctionsRequest request, StreamObserver<ListFunctionsResponse> responseObserver) {
          Object response = responses.remove();
          if (response instanceof ListFunctionsResponse) {
              requests.add(request);
              responseObserver.onNext((ListFunctionsResponse) response);
              responseObserver.onCompleted();
          } else if (response instanceof Exception) {
              responseObserver.onError((Exception) response);
          } else {
              responseObserver.onError(new IllegalArgumentException(
                      String.format("Unrecognized response type %s for method ListFunctions, expected %s or %s",
                              response.getClass().getName(), ListFunctionsResponse.class.getName(), Exception.class.getName())));
          }
      }
  
      @Override
      public void getFunction(GetFunctionRequest request, StreamObserver<CloudFunction> responseObserver) {
          Object response = responses.remove();
          if (response instanceof CloudFunction) {
              requests.add(request);
              responseObserver.onNext((CloudFunction) response);
              responseObserver.onCompleted();
          } else if (response instanceof Exception) {
              responseObserver.onError((Exception) response);
          } else {
              responseObserver.onError(new IllegalArgumentException(
                      String.format("Unrecognized response type %s for method GetFunction, expected %s or %s",
                              response.getClass().getName(), CloudFunction.class.getName(), Exception.class.getName())));
          }
      }
  
      @Override
      public void createFunction(CreateFunctionRequest request, StreamObserver<Operation> responseObserver) {
          Object response = responses.remove();
          if (response instanceof Operation) {
              requests.add(request);
              responseObserver.onNext((Operation) response);
              responseObserver.onCompleted();
          } else if (response instanceof Exception) {
              responseObserver.onError((Exception) response);
          } else {
              responseObserver.onError(new IllegalArgumentException(
                      String.format("Unrecognized response type %s for method CreateFunction, expected %s or %s",
                              response.getClass().getName(), Operation.class.getName(), Exception.class.getName())));
          }
      }
  
      @Override
      public void updateFunction(UpdateFunctionRequest request, StreamObserver<Operation> responseObserver) {
          Object response = responses.remove();
          if (response instanceof Operation) {
              requests.add(request);
              responseObserver.onNext((Operation) response);
              responseObserver.onCompleted();
          } else if (response instanceof Exception) {
              responseObserver.onError((Exception) response);
          } else {
              responseObserver.onError(new IllegalArgumentException(
                      String.format("Unrecognized response type %s for method UpdateFunction, expected %s or %s",
                              response.getClass().getName(), Operation.class.getName(), Exception.class.getName())));
          }
      }
  
      @Override
      public void deleteFunction(DeleteFunctionRequest request, StreamObserver<Operation> responseObserver) {
          Object response = responses.remove();
          if (response instanceof Operation) {
              requests.add(request);
              responseObserver.onNext((Operation) response);
              responseObserver.onCompleted();
          } else if (response instanceof Exception) {
              responseObserver.onError((Exception) response);
          } else {
              responseObserver.onError(new IllegalArgumentException(
                      String.format("Unrecognized response type %s for method DeleteFunction, expected %s or %s",
                              response.getClass().getName(), Operation.class.getName(), Exception.class.getName())));
          }
      }
  
      @Override
      public void callFunction(CallFunctionRequest request, StreamObserver<CallFunctionResponse> responseObserver) {
          Object response = responses.remove();
          if (response instanceof CallFunctionResponse) {
              requests.add(request);
              responseObserver.onNext((CallFunctionResponse) response);
              responseObserver.onCompleted();
          } else if (response instanceof Exception) {
              responseObserver.onError((Exception) response);
          } else {
              responseObserver.onError(new IllegalArgumentException(
                      String.format("Unrecognized response type %s for method CallFunction, expected %s or %s",
                              response.getClass().getName(), CallFunctionResponse.class.getName(), Exception.class.getName())));
          }
      }
  
      @Override
      public void generateUploadUrl(
              GenerateUploadUrlRequest request,
              StreamObserver<GenerateUploadUrlResponse> responseObserver) {
          Object response = responses.remove();
          if (response instanceof GenerateUploadUrlResponse) {
              requests.add(request);
              responseObserver.onNext((GenerateUploadUrlResponse) response);
              responseObserver.onCompleted();
          } else if (response instanceof Exception) {
              responseObserver.onError((Exception) response);
          } else {
              responseObserver.onError(new IllegalArgumentException(
                      String.format("Unrecognized response type %s for method GenerateUploadUrl, expected %s or %s",
                              response.getClass().getName(), GenerateUploadUrlResponse.class.getName(),
                              Exception.class.getName())));
          }
      }
  
      @Override
      public void generateDownloadUrl(
              GenerateDownloadUrlRequest request,
              StreamObserver<GenerateDownloadUrlResponse> responseObserver) {
          Object response = responses.remove();
          if (response instanceof GenerateDownloadUrlResponse) {
              requests.add(request);
              responseObserver.onNext((GenerateDownloadUrlResponse) response);
              responseObserver.onCompleted();
          } else if (response instanceof Exception) {
              responseObserver.onError((Exception) response);
          } else {
              responseObserver.onError(new IllegalArgumentException(
                      String.format("Unrecognized response type %s for method GenerateDownloadUrl, expected %s or %s",
                              response.getClass().getName(), GenerateDownloadUrlResponse.class.getName(),
                              Exception.class.getName())));
          }
      }
  
      @Override
      public void setIamPolicy(SetIamPolicyRequest request, StreamObserver<Policy> responseObserver) {
          Object response = responses.remove();
          if (response instanceof Policy) {
              requests.add(request);
              responseObserver.onNext((Policy) response);
              responseObserver.onCompleted();
          } else if (response instanceof Exception) {
              responseObserver.onError((Exception) response);
          } else {
              responseObserver.onError(new IllegalArgumentException(
                      String.format("Unrecognized response type %s for method SetIamPolicy, expected %s or %s",
                              response.getClass().getName(), Policy.class.getName(), Exception.class.getName())));
          }
      }
  
      @Override
      public void getIamPolicy(GetIamPolicyRequest request, StreamObserver<Policy> responseObserver) {
          Object response = responses.remove();
          if (response instanceof Policy) {
              requests.add(request);
              responseObserver.onNext((Policy) response);
              responseObserver.onCompleted();
          } else if (response instanceof Exception) {
              responseObserver.onError((Exception) response);
          } else {
              responseObserver.onError(new IllegalArgumentException(
                      String.format("Unrecognized response type %s for method GetIamPolicy, expected %s or %s",
                              response.getClass().getName(), Policy.class.getName(), Exception.class.getName())));
          }
      }
  
      @Override
      public void testIamPermissions(
              TestIamPermissionsRequest request,
              StreamObserver<TestIamPermissionsResponse> responseObserver) {
          Object response = responses.remove();
          if (response instanceof TestIamPermissionsResponse) {
              requests.add(request);
              responseObserver.onNext((TestIamPermissionsResponse) response);
              responseObserver.onCompleted();
          } else if (response instanceof Exception) {
              responseObserver.onError((Exception) response);
          } else {
              responseObserver.onError(new IllegalArgumentException(
                      String.format("Unrecognized response type %s for method TestIamPermissions, expected %s or %s",
                              response.getClass().getName(), TestIamPermissionsResponse.class.getName(),
                              Exception.class.getName())));
          }
      }
  
      @Override
      public ServerServiceDefinition getServiceDefinition() {
          return bindService();
      }
  }
  