package software.amazon.apprunner.service;

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.MockitoAnnotations;
import org.mockito.junit.jupiter.MockitoExtension;
import software.amazon.awssdk.services.apprunner.AppRunnerClient;
import software.amazon.awssdk.services.apprunner.model.DescribeServiceRequest;
import software.amazon.awssdk.services.apprunner.model.DescribeServiceResponse;
import software.amazon.awssdk.services.apprunner.model.InvalidRequestException;
import software.amazon.awssdk.services.apprunner.model.ResourceNotFoundException;
import software.amazon.cloudformation.exceptions.CfnInvalidRequestException;
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.junit.jupiter.api.Assertions.assertThrows;
import static org.mockito.ArgumentMatchers.any;
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.apprunner.service.TestData.RESOURCE_MODEL;
import static software.amazon.apprunner.service.TestData.SERVICE;

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

    @Mock
    private AmazonWebServicesClientProxy proxy;

    @Mock
    private ProxyClient<AppRunnerClient> proxyClient;

    @Mock
    AppRunnerClient apprunnerClient;

    @BeforeEach
    public void setup() {
        MockitoAnnotations.initMocks(this);
        proxy = new AmazonWebServicesClientProxy(logger, MOCK_CREDENTIALS, () -> Duration.ofSeconds(600).toMillis());
        proxyClient = MOCK_PROXY(proxy, apprunnerClient);
    }

    @AfterEach
    public void tear_down() {
        verify(apprunnerClient, atLeastOnce()).describeService(any(DescribeServiceRequest.class));
        verifyNoMoreInteractions(apprunnerClient);
    }

    @Test
    public void handleRequest_SimpleSuccess() {
        final ReadHandler handler = new ReadHandler();
        final ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(RESOURCE_MODEL)
                .build();
        DescribeServiceResponse describeServiceResponse = DescribeServiceResponse.builder()
                .service(SERVICE)
                .build();
        when(proxyClient.client().describeService(any(DescribeServiceRequest.class)))
                .thenReturn(describeServiceResponse);
        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().getServiceName())
                .isEqualTo(request.getDesiredResourceState().getServiceName());
        assertThat(response.getResourceModel().getServiceUrl())
                .isEqualTo(request.getDesiredResourceState().getServiceUrl());
        assertThat(response.getResourceModel().getNetworkConfiguration().getEgressConfiguration())
                .isEqualTo(request.getDesiredResourceState().getNetworkConfiguration().getEgressConfiguration());
        assertThat(response.getResourceModel().getNetworkConfiguration().getIngressConfiguration())
                .isEqualTo(request.getDesiredResourceState().getNetworkConfiguration().getIngressConfiguration());
        assertThat(response.getResourceModel().getObservabilityConfiguration())
                .isEqualTo(request.getDesiredResourceState().getObservabilityConfiguration());
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();
    }

    @Test
    public void handleRequest_InvalidRequest() {
        final ReadHandler handler = new ReadHandler();
        final ResourceModel model = ResourceModel.builder().build();
        final ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(model)
                .build();

        when(proxyClient.client().describeService(any(DescribeServiceRequest.class)))
                .thenThrow(InvalidRequestException.class);

        assertThrows(CfnInvalidRequestException.class,
                () -> handler.handleRequest(proxy, request, new CallbackContext(), proxyClient, logger));
    }

    @Test
    public void handleRequest_ResourceNotFound() {
        final ReadHandler handler = new ReadHandler();
        final ResourceModel model = ResourceModel.builder().build();
        final ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
                .desiredResourceState(model)
                .build();

        when(proxyClient.client().describeService(any(DescribeServiceRequest.class)))
                .thenThrow(ResourceNotFoundException.class);

        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.getResourceModels()).isNull();
        assertThat(response.getErrorCode()).isEqualTo(HandlerErrorCode.NotFound);
    }
}