package software.amazon.sso.permissionset;

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.services.ssoadmin.SsoAdminClient;
import software.amazon.awssdk.services.ssoadmin.model.ConflictException;
import software.amazon.awssdk.services.ssoadmin.model.DeletePermissionSetRequest;
import software.amazon.awssdk.services.ssoadmin.model.InternalServerException;
import software.amazon.awssdk.services.ssoadmin.model.ResourceNotFoundException;
import software.amazon.awssdk.services.ssoadmin.model.ServiceQuotaExceededException;
import software.amazon.awssdk.services.ssoadmin.model.ThrottlingException;
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.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import static software.amazon.sso.permissionset.TestConstants.ISE_MESSAGE;
import static software.amazon.sso.permissionset.TestConstants.TEST_PERMISSION_SET_ARN;
import static software.amazon.sso.permissionset.TestConstants.TEST_SSO_INSTANCE_ARN;
import static software.amazon.sso.permissionset.TestConstants.THROTTLING_MESSAGE;

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

    @Mock
    private AmazonWebServicesClientProxy proxy;

    @Mock
    private ProxyClient<SsoAdminClient> proxyClient;

    @Mock
    SsoAdminClient sso;

    @BeforeEach
    public void setup() {
        proxy = new AmazonWebServicesClientProxy(logger, MOCK_CREDENTIALS, () -> Duration.ofSeconds(600).toMillis());
        sso = mock(SsoAdminClient.class);
        when(proxyClient.client()).thenReturn(sso);
    }

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

        final ResourceModel model = ResourceModel.builder()
                .permissionSetArn(TEST_PERMISSION_SET_ARN)
                .instanceArn(TEST_SSO_INSTANCE_ARN)
                .build();

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

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

    @Test
    public void handleRequest_Deletion_Retryable_Throttling() {
        final DeleteHandler handler = new DeleteHandler();

        final ResourceModel model = ResourceModel.builder()
                .permissionSetArn(TEST_PERMISSION_SET_ARN)
                .instanceArn(TEST_SSO_INSTANCE_ARN)
                .build();

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

        DeletePermissionSetRequest deletePermissionSetRequest = DeletePermissionSetRequest.builder()
                .instanceArn(TEST_SSO_INSTANCE_ARN)
                .permissionSetArn(TEST_PERMISSION_SET_ARN)
                .build();
        when(proxy.injectCredentialsAndInvokeV2(deletePermissionSetRequest, proxyClient.client()::deletePermissionSet))
                .thenThrow(ThrottlingException.builder().message(THROTTLING_MESSAGE).build());

        final 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() >= 40 && response.getCallbackDelaySeconds() <= 120).isEqualTo(true);
        assertThat(response.getResourceModel()).isEqualTo(model);
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();
    }

    @Test
    public void handleRequest_Deletion_Retryable_Conflict() {
        final DeleteHandler handler = new DeleteHandler();

        final ResourceModel model = ResourceModel.builder()
                .permissionSetArn(TEST_PERMISSION_SET_ARN)
                .instanceArn(TEST_SSO_INSTANCE_ARN)
                .build();

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

        DeletePermissionSetRequest deletePermissionSetRequest = DeletePermissionSetRequest.builder()
                .instanceArn(TEST_SSO_INSTANCE_ARN)
                .permissionSetArn(TEST_PERMISSION_SET_ARN)
                .build();
        when(proxy.injectCredentialsAndInvokeV2(deletePermissionSetRequest, proxyClient.client()::deletePermissionSet))
                .thenThrow(ConflictException.builder().message(ISE_MESSAGE).build());

        final 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() >= 5 && response.getCallbackDelaySeconds() <= 100).isEqualTo(true);
        assertThat(response.getResourceModel()).isEqualTo(model);
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();
    }

    @Test
    public void handleRequest_Deletion_Retryable_ISE() {
        final DeleteHandler handler = new DeleteHandler();

        final ResourceModel model = ResourceModel.builder()
                .permissionSetArn(TEST_PERMISSION_SET_ARN)
                .instanceArn(TEST_SSO_INSTANCE_ARN)
                .build();

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

        DeletePermissionSetRequest deletePermissionSetRequest = DeletePermissionSetRequest.builder()
                .instanceArn(TEST_SSO_INSTANCE_ARN)
                .permissionSetArn(TEST_PERMISSION_SET_ARN)
                .build();
        when(proxy.injectCredentialsAndInvokeV2(deletePermissionSetRequest, proxyClient.client()::deletePermissionSet))
                .thenThrow(InternalServerException.builder().message(ISE_MESSAGE).build());

        final 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() >= 5 && response.getCallbackDelaySeconds() <= 100).isEqualTo(true);
        assertThat(response.getResourceModel()).isEqualTo(model);
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();
    }

    @Test
    public void handleRequest_Deletion_Retryable_LimitExceed() {
        final DeleteHandler handler = new DeleteHandler();

        final ResourceModel model = ResourceModel.builder()
                .permissionSetArn(TEST_PERMISSION_SET_ARN)
                .instanceArn(TEST_SSO_INSTANCE_ARN)
                .build();

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

        DeletePermissionSetRequest deletePermissionSetRequest = DeletePermissionSetRequest.builder()
                .instanceArn(TEST_SSO_INSTANCE_ARN)
                .permissionSetArn(TEST_PERMISSION_SET_ARN)
                .build();
        when(proxy.injectCredentialsAndInvokeV2(deletePermissionSetRequest, proxyClient.client()::deletePermissionSet))
                .thenThrow(InternalServerException.builder().message(ISE_MESSAGE).build());

        CallbackContext context = new CallbackContext();
        context.resetRetryAttempts(0);
        context.setHandlerInvoked(true);

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

        assertThat(response).isNotNull();
        assertThat(response.getStatus()).isEqualTo(OperationStatus.FAILED);
        assertThat(response.getCallbackDelaySeconds()).isEqualTo(0);
        assertThat(response.getResourceModel()).isNull();
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getMessage()).contains(ISE_MESSAGE);
        assertThat(response.getErrorCode()).isEqualTo(HandlerErrorCode.InternalFailure);
    }

    @Test
    public void handleRequest_Deletion_NonRetryable() {
        final DeleteHandler handler = new DeleteHandler();

        final ResourceModel model = ResourceModel.builder()
                .permissionSetArn(TEST_PERMISSION_SET_ARN)
                .instanceArn(TEST_SSO_INSTANCE_ARN)
                .build();

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

        DeletePermissionSetRequest deletePermissionSetRequest = DeletePermissionSetRequest.builder()
                .instanceArn(TEST_SSO_INSTANCE_ARN)
                .permissionSetArn(TEST_PERMISSION_SET_ARN)
                .build();
        when(proxy.injectCredentialsAndInvokeV2(deletePermissionSetRequest, proxyClient.client()::deletePermissionSet))
                .thenThrow(ServiceQuotaExceededException.builder().message("Resource not found").build());

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

        assertThat(response).isNotNull();
        assertThat(response.getStatus()).isEqualTo(OperationStatus.FAILED);
        assertThat(response.getCallbackDelaySeconds()).isEqualTo(0);
        assertThat(response.getResourceModel()).isNull();
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getMessage()).contains("Resource not found");
        assertThat(response.getErrorCode()).isEqualTo(HandlerErrorCode.GeneralServiceException);
    }

    @Test
    public void handleRequest_ResourceNotFound_Failed() {
        final DeleteHandler handler = new DeleteHandler();

        final ResourceModel model = ResourceModel.builder()
                .permissionSetArn(TEST_PERMISSION_SET_ARN)
                .instanceArn(TEST_SSO_INSTANCE_ARN)
                .build();

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

        DeletePermissionSetRequest deletePermissionSetRequest = DeletePermissionSetRequest.builder()
                .instanceArn(TEST_SSO_INSTANCE_ARN)
                .permissionSetArn(TEST_PERMISSION_SET_ARN)
                .build();
        when(proxy.injectCredentialsAndInvokeV2(deletePermissionSetRequest, proxyClient.client()::deletePermissionSet))
                .thenThrow(ResourceNotFoundException.builder().message("Permission set not found.").build());

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

        assertThat(response).isNotNull();
        assertThat(response.getStatus()).isEqualTo(OperationStatus.FAILED);
        assertThat(response.getCallbackDelaySeconds()).isEqualTo(0);
        assertThat(response.getResourceModel()).isNull();
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getMessage()).contains("Permission set not found.");
        assertThat(response.getErrorCode()).isEqualTo(HandlerErrorCode.NotFound);
    }
}