package software.amazon.redshift.cluster;

import java.time.Duration;
import software.amazon.awssdk.core.SdkClient;
import software.amazon.awssdk.services.redshift.RedshiftClient;
import software.amazon.awssdk.services.redshift.model.ClusterNotFoundException;
import software.amazon.awssdk.services.redshift.model.DeleteClusterRequest;
import software.amazon.awssdk.services.redshift.model.DeleteClusterResponse;
import software.amazon.awssdk.services.redshift.model.DeleteClusterSubnetGroupRequest;
import software.amazon.awssdk.services.redshift.model.DeleteClusterSubnetGroupResponse;
import software.amazon.awssdk.services.redshift.model.DescribeClustersRequest;
import software.amazon.awssdk.services.redshift.model.DescribeClustersResponse;
import software.amazon.cloudformation.proxy.AmazonWebServicesClientProxy;
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 org.junit.jupiter.api.AfterEach;
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.mock;
import static org.mockito.Mockito.atLeastOnce;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;
import static software.amazon.redshift.cluster.TestUtils.AWS_REGION;
import static software.amazon.redshift.cluster.TestUtils.BASIC_CLUSTER;
import static software.amazon.redshift.cluster.TestUtils.BASIC_CLUSTER_READ;
import static software.amazon.redshift.cluster.TestUtils.BASIC_MODEL;

@ExtendWith(MockitoExtension.class)
public class DeleteHandlerTest extends AbstractTestBase {

    @Mock
    private AmazonWebServicesClientProxy proxy;

    @Mock
    private ProxyClient<RedshiftClient> proxyClient;

    @Mock
    RedshiftClient sdkClient;

    private DeleteHandler handler;

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

    @AfterEach
    public void tear_down() {
        verify(sdkClient, atLeastOnce()).serviceName();
        verifyNoMoreInteractions(sdkClient);
    }

    @Test
    public void handleRequest_SimpleSuccess() {

        final ResourceModel model = BASIC_MODEL;

        final ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(model)
                .region(AWS_REGION)
                .logicalResourceIdentifier("logicalId")
                .clientRequestToken("token")
                .snapshotRequested(false)
                .build();

        when(proxyClient.client().deleteCluster(any(DeleteClusterRequest.class)))
                .thenReturn(DeleteClusterResponse.builder().build());

        when(proxyClient.client().describeClusters(any(DescribeClustersRequest.class)))
                .thenThrow(ClusterNotFoundException.class);

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

        assertThat(response).isNotNull();
        assertThat(response.getStatus()).isEqualTo(OperationStatus.IN_PROGRESS);
        assertThat(response.getCallbackDelaySeconds()).isEqualTo(30);

        response = handler.handleRequest(proxy, request, response.getCallbackContext(), proxyClient, logger);

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