package software.amazon.devopsguru.notificationchannel;

import org.apache.commons.lang3.tuple.Pair;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
import software.amazon.awssdk.services.devopsguru.DevOpsGuruClient;
import software.amazon.awssdk.services.devopsguru.model.AccessDeniedException;
import software.amazon.awssdk.services.devopsguru.model.AddNotificationChannelRequest;
import software.amazon.awssdk.services.devopsguru.model.AddNotificationChannelResponse;
import software.amazon.awssdk.services.devopsguru.model.InternalServerException;
import software.amazon.awssdk.services.devopsguru.model.ListNotificationChannelsRequest;
import software.amazon.awssdk.services.devopsguru.model.ListNotificationChannelsResponse;
import software.amazon.awssdk.services.devopsguru.model.NotificationChannel;
import software.amazon.awssdk.services.devopsguru.model.ResourceNotFoundException;
import software.amazon.awssdk.services.devopsguru.model.ServiceQuotaExceededException;
import software.amazon.awssdk.services.devopsguru.model.ThrottlingException;
import software.amazon.awssdk.services.devopsguru.model.ValidationException;
import software.amazon.cloudformation.exceptions.CfnAccessDeniedException;
import software.amazon.cloudformation.exceptions.CfnAlreadyExistsException;
import software.amazon.cloudformation.exceptions.CfnInternalFailureException;
import software.amazon.cloudformation.exceptions.CfnInvalidRequestException;
import software.amazon.cloudformation.exceptions.CfnNotFoundException;
import software.amazon.cloudformation.exceptions.CfnServiceInternalErrorException;
import software.amazon.cloudformation.exceptions.CfnServiceLimitExceededException;
import software.amazon.cloudformation.exceptions.CfnThrottlingException;
import software.amazon.cloudformation.proxy.AmazonWebServicesClientProxy;
import software.amazon.cloudformation.proxy.ProgressEvent;
import software.amazon.cloudformation.proxy.ProxyClient;
import software.amazon.cloudformation.proxy.ResourceHandlerRequest;

import java.time.Duration;
import java.util.Arrays;
import java.util.List;

import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

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

    @Mock
    private AmazonWebServicesClientProxy proxy;

    @Mock
    private ProxyClient<DevOpsGuruClient> proxyClient;

    @Mock
    DevOpsGuruClient sdkClient;

    private CreateHandler handler;


    @BeforeEach
    public void setup() {
        handler = new CreateHandler();
        proxy = new AmazonWebServicesClientProxy(logger, MOCK_CREDENTIALS, () -> Duration.ofSeconds(600).toMillis());
        sdkClient = mock(DevOpsGuruClient.class);
        proxyClient = MOCK_PROXY(proxy, sdkClient);
    }

    @ParameterizedTest(name = "run #{index} with [{arguments}]")
    @MethodSource("validationNotificationChannelWithResourceModelParams")
    public void handleRequest_successful(final Pair<List<NotificationChannel>, ResourceModel> mappingPair) {
        final NotificationChannel secondChannel = mappingPair.getKey().get(1);
        final ResourceModel model = mappingPair.getValue();
        final List<NotificationChannel> otherChannels = Arrays.asList(secondChannel);

        final ListNotificationChannelsResponse listNotificationChannelsResponse = ListNotificationChannelsResponse.builder().channels(otherChannels).build();
        when(proxyClient.client().listNotificationChannels(any(ListNotificationChannelsRequest.class))).thenReturn(listNotificationChannelsResponse);

        final AddNotificationChannelResponse addNotificationChannelResponse = AddNotificationChannelResponse.builder().id(id).build();
        when(proxyClient.client().addNotificationChannel(any(AddNotificationChannelRequest.class))).thenReturn(addNotificationChannelResponse);

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

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

        assertResponse(response, model);
    }

    @Test
    public void handleRequest_checkForPreCreateResourceExistenceThrowCfnAlreadyExistsException() {
        final NotificationChannel channel = constructNotificationChannel(topicArn, id, insightSeveritiesFilter, messageTypesFilter);
        final List<NotificationChannel> channels =  Arrays.asList(channel);
        final ResourceModel model = constructResourceModel(topicArn, id, insightSeveritiesFilter, messageTypesFilter);
        final ListNotificationChannelsResponse listNotificationChannelsResponse = ListNotificationChannelsResponse.builder().channels(channels).build();
        when(proxyClient.client().listNotificationChannels(any(ListNotificationChannelsRequest.class))).thenReturn(listNotificationChannelsResponse);


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

        assertThatExceptionOfType(CfnAlreadyExistsException.class).isThrownBy(() -> handler.handleRequest(proxy, request, new CallbackContext(), proxyClient, logger));
    }


    @Test
    public void handleRequest_exceptions(){
        final NotificationChannel secondChannel = constructNotificationChannel(topicArn1, id1, insightSeveritiesFilter, messageTypesFilter);
        final ResourceModel model = constructResourceModel(topicArn, id, insightSeveritiesFilter, messageTypesFilter);
        final List<NotificationChannel> channels = Arrays.asList(secondChannel);
        final ListNotificationChannelsResponse listNotificationChannelsResponse = ListNotificationChannelsResponse.builder().channels(channels).build();
        when(proxyClient.client().listNotificationChannels(any(ListNotificationChannelsRequest.class))).thenReturn(listNotificationChannelsResponse);


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

        when(proxyClient.client().addNotificationChannel(any(AddNotificationChannelRequest.class))).thenThrow(AccessDeniedException.class);
        assertThatExceptionOfType(CfnAccessDeniedException.class).isThrownBy(() -> handler.handleRequest(proxy, request, new CallbackContext(), proxyClient, logger));

        when(proxyClient.client().addNotificationChannel(any(AddNotificationChannelRequest.class))).thenThrow(InternalServerException.class);
        assertThatExceptionOfType(CfnServiceInternalErrorException.class).isThrownBy(() -> handler.handleRequest(proxy, request, new CallbackContext(), proxyClient, logger));

        when(proxyClient.client().addNotificationChannel(any(AddNotificationChannelRequest.class))).thenThrow(ResourceNotFoundException.class);
        assertThatExceptionOfType(CfnNotFoundException.class).isThrownBy(() -> handler.handleRequest(proxy, request, new CallbackContext(), proxyClient, logger));

        when(proxyClient.client().addNotificationChannel(any(AddNotificationChannelRequest.class))).thenThrow(ValidationException.class);
        assertThatExceptionOfType(CfnInvalidRequestException.class).isThrownBy(() -> handler.handleRequest(proxy, request, new CallbackContext(), proxyClient, logger));

        when(proxyClient.client().addNotificationChannel(any(AddNotificationChannelRequest.class))).thenThrow(ThrottlingException.class);
        assertThatExceptionOfType(CfnThrottlingException.class).isThrownBy(() -> handler.handleRequest(proxy, request, new CallbackContext(), proxyClient, logger));

        when(proxyClient.client().addNotificationChannel(any(AddNotificationChannelRequest.class))).thenThrow(ServiceQuotaExceededException.class);
        assertThatExceptionOfType(CfnServiceLimitExceededException.class).isThrownBy(() -> handler.handleRequest(proxy, request, new CallbackContext(), proxyClient, logger));

        when(proxyClient.client().addNotificationChannel(any(AddNotificationChannelRequest.class))).thenThrow(RuntimeException.class);
        assertThatExceptionOfType(CfnInternalFailureException.class).isThrownBy(() -> handler.handleRequest(proxy, request, new CallbackContext(), proxyClient, logger));
    }
}