package software.amazon.transfer.agreement;

import software.amazon.awssdk.services.transfer.TransferClient;
import software.amazon.awssdk.services.transfer.model.DescribeAgreementResponse;
import software.amazon.awssdk.services.transfer.model.DescribedAgreement;
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.TransferException;
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 software.amazon.transfer.agreement.AbstractTestBase.*;

@ExtendWith(MockitoExtension.class)
public class ReadHandlerTest {

    @Mock
    private AmazonWebServicesClientProxy proxy;

    @Mock
    private Logger logger;

    @Mock
    private TransferClient client;

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

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

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

        DescribeAgreementResponse describeAgreementResponse = DescribeAgreementResponse.builder()
                .agreement(DescribedAgreement.builder()
                        .description(TEST_DESCRIPTION)
                        .status(TEST_STATUS)
                        .build())
                .build();
        doReturn(describeAgreementResponse).when(proxy).injectCredentialsAndInvokeV2(any(), any());

        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).hasFieldOrPropertyWithValue("description", TEST_DESCRIPTION);
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();
    }

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

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

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

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

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

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

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

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

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

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

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

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

        ResourceModel model = ResourceModel.builder()
                .agreementId(TEST_AGREEMENT_ID)
                .serverId(TEST_SERVER_ID)
                .build();

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

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

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

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

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

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

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