package software.amazon.sagemaker.pipeline;

import lombok.extern.slf4j.Slf4j;
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 software.amazon.awssdk.awscore.exception.AwsErrorDetails;
import software.amazon.awssdk.awscore.exception.AwsServiceException;
import software.amazon.awssdk.services.sagemaker.SageMakerClient;
import software.amazon.awssdk.services.sagemaker.model.DeletePipelineRequest;
import software.amazon.awssdk.services.sagemaker.model.DeletePipelineResponse;
import software.amazon.awssdk.services.sagemaker.model.ResourceNotFoundException;
import software.amazon.awssdk.services.sagemaker.model.SageMakerException;
import software.amazon.cloudformation.Action;
import software.amazon.cloudformation.exceptions.CfnGeneralServiceException;
import software.amazon.cloudformation.exceptions.CfnNotFoundException;
import software.amazon.cloudformation.exceptions.CfnServiceInternalErrorException;
import software.amazon.cloudformation.proxy.AmazonWebServicesClientProxy;
import software.amazon.cloudformation.proxy.HandlerErrorCode;
import software.amazon.cloudformation.proxy.OperationStatus;
import software.amazon.cloudformation.proxy.ProgressEvent;
import software.amazon.cloudformation.proxy.ProxyClient;
import software.amazon.cloudformation.proxy.ResourceHandlerRequest;

import java.time.Duration;

import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

@Slf4j
@ExtendWith(MockitoExtension.class)
public class DeleteHandlerTest extends AbstractTestBase {
    @Mock
    private AmazonWebServicesClientProxy proxy;

    @Mock
    private ProxyClient<SageMakerClient> proxyClient;

    @Mock
    SageMakerClient sdkClient;

    @BeforeEach
    public void setup() {
        proxy = new AmazonWebServicesClientProxy(logger, MOCK_CREDENTIALS, () -> Duration.ofSeconds(600).toMillis());
        sdkClient = mock(SageMakerClient.class);
        proxyClient = MOCK_PROXY(proxy, sdkClient);
    }

    @Test
    public void testDeleteHandler_SimpleSuccess() {
        final DeletePipelineResponse deletePipelineResponse = DeletePipelineResponse.builder()
                .pipelineArn(TEST_ROLE_ARN)
                .build();

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

        when(proxyClient.client().deletePipeline(any(DeletePipelineRequest.class)))
                .thenReturn(deletePipelineResponse);

        final ProgressEvent<ResourceModel, CallbackContext> response = invokeHandleRequest(request);

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

    @Test
    public void testDeleteHandler_ServiceInternalException() {
        final AwsServiceException serviceInternalException = SageMakerException.builder()
                .awsErrorDetails(AwsErrorDetails.builder()
                        .errorMessage(TEST_ERROR_MESSAGE)
                        .errorCode("InternalError")
                        .build())
                .statusCode(500)
                .build();
        final ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(getResourceModel())
                .build();

        when(proxyClient.client().deletePipeline(any(DeletePipelineRequest.class)))
                .thenThrow(serviceInternalException);

        Exception exception = assertThrows(CfnServiceInternalErrorException.class, () -> invokeHandleRequest(request));

        assertThat(exception.getMessage()).isEqualTo(String.format(HandlerErrorCode.ServiceInternalError.getMessage(),
                serviceInternalException.awsErrorDetails().errorMessage()));
    }

    @Test
    public void testDeleteHandler_ResourceNotFoundException() {
        when(proxyClient.client().deletePipeline(any(DeletePipelineRequest.class)))
                .thenThrow(ResourceNotFoundException.class);

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

        Exception exception = assertThrows(CfnNotFoundException.class, () -> invokeHandleRequest(request));

        assertThat(exception.getMessage()).isEqualTo(String.format(HandlerErrorCode.NotFound.getMessage(),
                ResourceModel.TYPE_NAME, TEST_PIPELINE_NAME));
    }

    private ProgressEvent<ResourceModel, CallbackContext> invokeHandleRequest(ResourceHandlerRequest<ResourceModel> request) {
        final software.amazon.sagemaker.pipeline.DeleteHandler handler = new DeleteHandler();
        return handler.handleRequest(proxy, request, new CallbackContext(), proxyClient, logger);
    }
}