package software.amazon.transfer.certificate;

import software.amazon.awssdk.services.transfer.TransferClient;
import software.amazon.awssdk.services.transfer.model.InternalServiceErrorException;
import software.amazon.awssdk.services.transfer.model.InvalidRequestException;
import software.amazon.awssdk.services.transfer.model.ResourceNotFoundException;
import software.amazon.awssdk.services.transfer.model.TagResourceRequest;
import software.amazon.awssdk.services.transfer.model.TransferException;
import software.amazon.awssdk.services.transfer.model.TransferRequest;
import software.amazon.awssdk.services.transfer.model.UntagResourceRequest;
import software.amazon.awssdk.services.transfer.model.UpdateCertificateRequest;
import software.amazon.awssdk.services.transfer.model.UpdateCertificateResponse;
import software.amazon.cloudformation.exceptions.CfnGeneralServiceException;
import software.amazon.cloudformation.exceptions.CfnInvalidRequestException;
import software.amazon.cloudformation.exceptions.CfnNotFoundException;
import software.amazon.cloudformation.exceptions.CfnServiceInternalErrorException;
import software.amazon.cloudformation.proxy.AmazonWebServicesClientProxy;
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.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.junit.jupiter.api.Assertions.assertThrows;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static software.amazon.transfer.certificate.AbstractTestBase.*;

import java.util.Set;
import java.util.stream.Collectors;

@ExtendWith(MockitoExtension.class)
public class UpdateHandlerTest {

    @Mock
    private AmazonWebServicesClientProxy proxy;

    @Mock
    private Logger logger;

    @Mock
    private TransferClient client;

    @Test
    public void handleRequest_SimpleSuccess() {
        final UpdateHandler handler = new UpdateHandler(client);

        final ResourceModel model = ResourceModel.builder()
                .certificateId(TEST_CERTIFICATE_ID)
                .description(TEST_DESCRIPTION_2)
                .build();

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

        UpdateCertificateResponse updateCertificateRequest = UpdateCertificateResponse.builder()
            .certificateId(TEST_CERTIFICATE_ID)
            .build();
        doReturn(updateCertificateRequest).when(proxy).injectCredentialsAndInvokeV2(any(), any());

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

            ResourceModel testModel = response.getResourceModel();
            assertThat(response).isNotNull();
            assertThat(response.getStatus()).isEqualTo(OperationStatus.SUCCESS);
            assertThat(response.getCallbackContext()).isNull();
            assertThat(response.getCallbackDelaySeconds()).isEqualTo(0);
            assertThat(testModel).isEqualTo(model);
            assertThat(response.getResourceModels()).isNull();
            assertThat(response.getMessage()).isNull();
            assertThat(response.getErrorCode()).isNull();
            assertThat(testModel).hasFieldOrPropertyWithValue("description", TEST_DESCRIPTION_2);
            verify(proxy, times(1)).injectCredentialsAndInvokeV2(any(UpdateCertificateRequest.class), any());
    }

    @Test
    public void handleRequest_AddTagInvoked() {
        UpdateHandler handler = new UpdateHandler(client);
        Set<Tag> desiredTags = TEST_TAG_MAP.entrySet()
                .stream()
                .map(
                        tag -> Tag.builder().key(tag.getKey()).value(tag.getValue()).build()
                )
                .collect(Collectors.toSet());

        ResourceModel model = ResourceModel.builder().build();

        ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(model)
                .desiredResourceTags(RESOURCE_TAG_MAP)
                .systemTags(SYSTEM_TAG_MAP)
                .build();

        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()).isNotNull();
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();
        assertThat(response.getResourceModel().getTags()).isEqualTo(desiredTags);
        verify(proxy, times(1)).injectCredentialsAndInvokeV2(any(TagResourceRequest.class), any());
        verify(proxy, times(1)).injectCredentialsAndInvokeV2(any(UpdateCertificateRequest.class), any());
    }

    @Test
    public void handleRequest_RemoveTagInvoked() {
        UpdateHandler handler = new UpdateHandler(client);
        Set<Tag> systemTags = SYSTEM_TAG_MAP.entrySet()
                .stream()
                .map(
                        tag -> Tag.builder().key(tag.getKey()).value(tag.getValue()).build()
                )
                .collect(Collectors.toSet());

        ResourceModel model = ResourceModel.builder().build();

        ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(model)
                .previousResourceTags(RESOURCE_TAG_MAP)
                .systemTags(SYSTEM_TAG_MAP)
                .build();

        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()).isNotNull();
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();
        assertThat(response.getResourceModel().getTags()).isEqualTo(systemTags);
        verify(proxy, times(1)).injectCredentialsAndInvokeV2(any(UntagResourceRequest.class), any());
        verify(proxy, times(1)).injectCredentialsAndInvokeV2(any(UpdateCertificateRequest.class), any());
    }

    @Test
    public void handleRequest_InvalidRequestExceptionFailed() {
        UpdateHandler handler = new UpdateHandler(client);

        doThrow(InvalidRequestException.class)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(), any());

        ResourceModel model = ResourceModel.builder().build();

        ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(model)
                .desiredResourceTags(RESOURCE_TAG_MAP)
                .systemTags(SYSTEM_TAG_MAP)
                .build();

        assertThrows(CfnInvalidRequestException.class, () -> {
            handler.handleRequest(proxy, request, null, logger);
        } );
    }

    @Test
    public void handleRequest_InternalServiceErrorExceptionFailed() {
        UpdateHandler handler = new UpdateHandler(client);

        doThrow(InternalServiceErrorException.class)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(TransferRequest.class), any());

        ResourceModel model = ResourceModel.builder().build();

        ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(model)
                .desiredResourceTags(RESOURCE_TAG_MAP)
                .systemTags(SYSTEM_TAG_MAP)
                .build();

        assertThrows(CfnServiceInternalErrorException.class, () -> {
            handler.handleRequest(proxy, request, null, logger);
        } );
    }

    @Test
    public void handleRequest_ResourceNotFoundExceptionFailed() {
        UpdateHandler handler = new UpdateHandler(client);

        doThrow(ResourceNotFoundException.class)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(TransferRequest.class), any());

        ResourceModel model = ResourceModel.builder().build();

        ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(model)
                .desiredResourceTags(RESOURCE_TAG_MAP)
                .systemTags(SYSTEM_TAG_MAP)
                .build();

        assertThrows(CfnNotFoundException.class, () -> {
            handler.handleRequest(proxy, request, null, logger);
        } );
    }

    @Test
    public void handleRequest_TransferExceptionFailed() {
        UpdateHandler handler = new UpdateHandler(client);

        doThrow(TransferException.class)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(TransferRequest.class), any());

        ResourceModel model = ResourceModel.builder().build();

        ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(model)
                .desiredResourceTags(RESOURCE_TAG_MAP)
                .systemTags(SYSTEM_TAG_MAP)
                .build();

        assertThrows(CfnGeneralServiceException.class, () -> {
            handler.handleRequest(proxy, request, null, logger);
        } );
    }
}