package software.amazon.ses.configurationset;

import com.amazonaws.AmazonServiceException;
import software.amazon.awssdk.services.ses.model.CreateConfigurationSetRequest;
import software.amazon.awssdk.services.ses.model.DescribeConfigurationSetRequest;
import software.amazon.awssdk.services.ses.model.InvalidConfigurationSetException;
import software.amazon.awssdk.services.ses.model.LimitExceededException;
import software.amazon.cloudformation.exceptions.CfnAlreadyExistsException;
import software.amazon.cloudformation.exceptions.CfnInvalidRequestException;
import software.amazon.cloudformation.exceptions.CfnServiceLimitExceededException;
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 software.amazon.awssdk.core.exception.SdkException;
import software.amazon.awssdk.services.ses.model.ConfigurationSet;
import software.amazon.awssdk.services.ses.model.ConfigurationSetAlreadyExistsException;
import software.amazon.awssdk.services.ses.model.ConfigurationSetDoesNotExistException;
import software.amazon.awssdk.services.ses.model.CreateConfigurationSetResponse;
import software.amazon.awssdk.services.ses.model.DescribeConfigurationSetResponse;

import java.util.UUID;

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;

@ExtendWith(MockitoExtension.class)
public class CreateHandlerTest {

    @Mock
    private AmazonWebServicesClientProxy proxy;

    @Mock
    private Logger logger;

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

        final CreateConfigurationSetResponse createResponse = CreateConfigurationSetResponse.builder()
            .build();

        final ResourceModel model = ResourceModel.builder()
            .name("test-set")
            .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.getResourceModels()).isNull();
        assertThat(response.getResourceModel()).isEqualTo(model);
        assertThat(response.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();
    }

    @Test
    public void handleRequest_FailedCreate_UnknownError() {
        final CreateHandler handler = new CreateHandler();

        doThrow(SdkException.builder().message("test error").build())
            .when(proxy)
            .injectCredentialsAndInvokeV2(
                any(),
                any()
            );

        final ResourceModel model = ResourceModel.builder()
            .name("test-set")
            .build();

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

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

    @Test
    public void handleRequest_FailedCreate_AmazonServiceException() {
        final CreateHandler handler = new CreateHandler();

        doThrow(new AmazonServiceException("test error"))
            .when(proxy)
            .injectCredentialsAndInvokeV2(
                any(),
                any()
            );

        final ResourceModel model = ResourceModel.builder()
            .name("test-set")
            .build();

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

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

    @Test
    public void handleRequest_FailedPreExisting() {
        final CreateHandler handler = new CreateHandler();

        doThrow(ConfigurationSetAlreadyExistsException.class).when(proxy)
                .injectCredentialsAndInvokeV2(any(CreateConfigurationSetRequest.class), any());

        final ResourceModel model = ResourceModel.builder()
            .name("test-set")
            .build();

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

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

    @Test
    public void handleRequest_FailWith_InvalidConfigurationSetException() {
        final CreateHandler handler = new CreateHandler();

        doThrow(InvalidConfigurationSetException.class).when(proxy)
                .injectCredentialsAndInvokeV2(any(CreateConfigurationSetRequest.class), any());

        final ResourceModel model = ResourceModel.builder()
                .name("test-set")
                .build();

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

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

    @Test
    public void handleRequest_FailWith_LimitExceededException() {
        final CreateHandler handler = new CreateHandler();

        doThrow(LimitExceededException.class).when(proxy)
                .injectCredentialsAndInvokeV2(any(CreateConfigurationSetRequest.class), any());

        final ResourceModel model = ResourceModel.builder()
                .name("test-set")
                .build();

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

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

    @Test
    public void handleRequest_WithGeneratedName() {
        final CreateHandler handler = new CreateHandler();

        final CreateConfigurationSetResponse createResponse = CreateConfigurationSetResponse.builder()
            .build();

        // no name supplied; should be generated
        final ResourceModel model = ResourceModel.builder().build();

        final ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
            .clientRequestToken(UUID.randomUUID().toString())
            .logicalResourceIdentifier("myConfigurationSet")
            .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.getResourceModels()).isNull();
        assertThat(response.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();

        ResourceModel outModel = response.getResourceModel();
        assertThat(outModel.getName()).startsWith("myConfigurationSet");
    }
}