package software.amazon.databrew.project;

import software.amazon.awssdk.services.databrew.model.*;
import software.amazon.cloudformation.proxy.AmazonWebServicesClientProxy;
import software.amazon.cloudformation.proxy.HandlerErrorCode;
import software.amazon.cloudformation.proxy.Logger;
import software.amazon.cloudformation.proxy.OperationStatus;
import software.amazon.cloudformation.proxy.ProgressEvent;
import software.amazon.cloudformation.proxy.ResourceHandlerRequest;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.mock;
import static software.amazon.databrew.project.TestUtil.INVALID_PROJECT_NAME;
import static software.amazon.databrew.project.TestUtil.PROJECT_NAME;
import static software.amazon.databrew.project.TestUtil.VALID_ARN_ROLE;

@ExtendWith(MockitoExtension.class)
public class CreateHandlerTest {

    @Mock
    private AmazonWebServicesClientProxy proxy;

    @Mock
    private Logger logger;

    @BeforeEach
    public void setup() {
        proxy = mock(AmazonWebServicesClientProxy.class);
        logger = mock(Logger.class);
    }

    @Test
    public void handleRequest_SimpleSuccess() {
        final CreateHandler handler = new CreateHandler();
        final CreateProjectResponse createProjectResponse = CreateProjectResponse.builder().build();
        doReturn(createProjectResponse)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(), any());

        final ResourceModel model = ResourceModel.builder()
                .name(PROJECT_NAME)
                .roleArn(VALID_ARN_ROLE)
                .tags(ModelHelper.buildModelTags(TestUtil.sampleTags()))
                .build();

        final ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(model)
                .build();

        final ProgressEvent<ResourceModel, CallbackContext> response
                = handler.handleRequest(proxy, request, null, logger);

        assertThat(response).isNotNull();
        assertThat(response.getStatus()).isEqualTo(OperationStatus.SUCCESS);
        assertThat(response.getCallbackContext()).isNull();
        assertThat(response.getCallbackDelaySeconds()).isEqualTo(0);
        assertThat(response.getResourceModel()).isEqualTo(request.getDesiredResourceState());
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();
    }


    @Test
    public void handleRequest_FailedCreate_NoParameterException() {
        doThrow(DataBrewException.class)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(), any());

        final CreateHandler handler = new CreateHandler();
        final ResourceModel model = ResourceModel.builder()
                .name(INVALID_PROJECT_NAME)
                .build();

        final ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(model)
                .build();

        final ProgressEvent<ResourceModel, CallbackContext> response
                = handler.handleRequest(proxy, request, null, logger);

        assertThat(response).isNotNull();
        assertThat(response.getStatus()).isEqualTo(OperationStatus.FAILED);
        assertThat(response.getResourceModel()).isNull();
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getErrorCode()).isEqualTo(HandlerErrorCode.ServiceInternalError);
    }

    @Test
    public void handleRequest_FailedCreate_ResourceAlreadyExistsException() {
        doThrow(ConflictException.class)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(), any());

        final CreateHandler handler = new CreateHandler();
        final ResourceModel model = ResourceModel.builder()
                .name(INVALID_PROJECT_NAME)
                .roleArn(VALID_ARN_ROLE)
                .build();

        final ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(model)
                .build();

        final ProgressEvent<ResourceModel, CallbackContext> response
                = handler.handleRequest(proxy, request, null, logger);

        assertThat(response).isNotNull();
        assertThat(response.getStatus()).isEqualTo(OperationStatus.FAILED);
        assertThat(response.getResourceModel()).isNull();
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getErrorCode()).isEqualTo(HandlerErrorCode.AlreadyExists);
    }

    @Test
    public void handleRequest_FailedCreate_InvalidParameterException() {
        doThrow(ValidationException.class)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(), any());

        final CreateHandler handler = new CreateHandler();
        final ResourceModel model = ResourceModel.builder()
                .name(PROJECT_NAME)
                .build();

        final ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(model)
                .build();

        final ProgressEvent<ResourceModel, CallbackContext> response
                = handler.handleRequest(proxy, request, null, logger);

        assertThat(response).isNotNull();
        assertThat(response.getStatus()).isEqualTo(OperationStatus.FAILED);
        assertThat(response.getResourceModel()).isNull();
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getErrorCode()).isEqualTo(HandlerErrorCode.InvalidRequest);
    }

    @Test
    public void handleRequest_FailedCreate_LimitExceededException() {
        doThrow(ServiceQuotaExceededException.class)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(), any());

        final CreateHandler handler = new CreateHandler();
        final ResourceModel model = ResourceModel.builder()
                .name(INVALID_PROJECT_NAME)
                .roleArn(VALID_ARN_ROLE)
                .build();

        final ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(model)
                .build();

        final ProgressEvent<ResourceModel, CallbackContext> response
                = handler.handleRequest(proxy, request, null, logger);

        assertThat(response).isNotNull();
        assertThat(response.getStatus()).isEqualTo(OperationStatus.FAILED);
        assertThat(response.getResourceModel()).isNull();
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getErrorCode()).isEqualTo(HandlerErrorCode.ServiceLimitExceeded);
    }
}