package software.amazon.lookoutvision.project;

import java.time.Duration;

import org.mockito.ArgumentMatchers;
import software.amazon.awssdk.core.SdkClient;
import software.amazon.awssdk.services.lookoutvision.LookoutVisionClient;
import software.amazon.awssdk.services.lookoutvision.model.DescribeProjectResponse;
import software.amazon.awssdk.services.lookoutvision.model.ProjectDescription;
import software.amazon.cloudformation.exceptions.ResourceNotFoundException;
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.ProxyClient;
import software.amazon.cloudformation.proxy.ResourceHandlerRequest;
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.junit.jupiter.MockitoExtension;

import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.atLeastOnce;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;

@ExtendWith(MockitoExtension.class)
public class ReadHandlerTest {
    private ReadHandler handler;

    @Mock
    private AmazonWebServicesClientProxy proxy;


    @Mock
    private ProxyClient<LookoutVisionClient> proxyClient;

    @Mock
    private LookoutVisionClient lookoutVisionClient;

    @Mock
    private Logger logger;

    @BeforeEach
    public void setup() {
        handler = new ReadHandler();
        proxy = mock(AmazonWebServicesClientProxy.class);
        logger = mock(Logger.class);
    }

    @Test
    public void handleRequest_Success() {
        final String projectName = "projectName";
        final String projectArn = "arn:aws:lookoutvision:us-east-1:111111111111:project/projectName";

        final DescribeProjectResponse describeResponse = DescribeProjectResponse.builder()
            .projectDescription(ProjectDescription.builder()
                .projectArn(projectArn)
                .projectName(projectName)
                .build())
            .build();

        doReturn(describeResponse)
            .when(proxy)
            .injectCredentialsAndInvokeV2(
                ArgumentMatchers.any(),
                ArgumentMatchers.any()
            );

	doReturn(lookoutVisionClient)
	    .when(proxyClient)
	    .client();

        final ResourceModel expectedOutputModel = ResourceModel.builder()
            .projectName(projectName)
            .arn(projectArn)
            .build();

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

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

        assertThat(response).isNotNull();
        assertThat(response.getStatus()).isEqualTo(OperationStatus.SUCCESS);
        assertThat(response.getCallbackContext()).isNull();
        assertThat(response.getCallbackDelaySeconds()).isEqualTo(0);
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getResourceModel()).isEqualToComparingFieldByField(expectedOutputModel);
        assertThat(response.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();
    }

    @Test
    public void handleRequest_FailureNotFound_WithException() {
        doThrow(software.amazon.awssdk.services.lookoutvision.model.ResourceNotFoundException.class)
            .when(proxy)
            .injectCredentialsAndInvokeV2(
                ArgumentMatchers.any(),
                ArgumentMatchers.any()
            );

	doReturn(lookoutVisionClient)
	    .when(proxyClient)
	    .client();

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

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

    @Test
    public void handleRequest_FailureNotFound_NullProjectNameInput() {
        ResourceModel inputModel = ResourceModel.builder()
            .build();

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

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

    @Test
    public void handleRequest_FailureNotFound_NullModel() {
        final ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder()
            .build();

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

}