package software.amazon.ssmincidents.responseplan;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
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 software.amazon.awssdk.services.ssmincidents.SsmIncidentsClient;
import software.amazon.awssdk.services.ssmincidents.model.CreateResponsePlanRequest;
import software.amazon.awssdk.services.ssmincidents.model.CreateResponsePlanResponse;
import software.amazon.awssdk.services.ssmincidents.model.GetResponsePlanRequest;
import software.amazon.awssdk.services.ssmincidents.model.ListTagsForResourceRequest;
import software.amazon.awssdk.services.ssmincidents.model.ListTagsForResourceResponse;
import software.amazon.cloudformation.proxy.AmazonWebServicesClientProxy;
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.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.argThat;
import static org.mockito.Mockito.atLeastOnce;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;

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

    @Mock
    SsmIncidentsClient sdkClient;
    @Mock
    private AmazonWebServicesClientProxy proxy;
    @Mock
    private ProxyClient<SsmIncidentsClient> proxyClient;

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

    @AfterEach
    public void tear_down() {
        verify(sdkClient, atLeastOnce()).serviceName();
        verifyNoMoreInteractions(sdkClient);
    }

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

        final ResourceModel model = TestData.DESIRED_MODEL_BASE;
        when(proxyClient.client().createResponsePlan(any(CreateResponsePlanRequest.class)))
            .thenReturn(
                CreateResponsePlanResponse
                    .builder()
                    .arn(TestData.ARN)
                    .build()
            );

        when(proxyClient.client().listTagsForResource(any(ListTagsForResourceRequest.class)))
            .thenReturn(ListTagsForResourceResponse.builder().build());

        when(proxyClient.client().getResponsePlan(any(GetResponsePlanRequest.class)))
            .thenReturn(TestData.GET_RESPONSE_PLAN_RESPONSE_BASE);

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

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

        verify(sdkClient, times(1)).getResponsePlan(any(GetResponsePlanRequest.class));
        verify(sdkClient, times(1)).createResponsePlan(any(CreateResponsePlanRequest.class));
        verify(sdkClient, times(1)).listTagsForResource(any(ListTagsForResourceRequest.class));

        assertThat(response).isNotNull();
        assertThat(response.getStatus()).isEqualTo(OperationStatus.SUCCESS);
        assertThat(response.getCallbackDelaySeconds()).isEqualTo(0);
        assertThat(response.getResourceModel()).isEqualTo(TestData.RETURNED_MODEL_BASE);
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();
    }

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

        final ResourceModel model = DESIRED_COMPLETE_MODEL;
        when(proxyClient.client().createResponsePlan(any(CreateResponsePlanRequest.class)))
            .thenReturn(
                CreateResponsePlanResponse
                    .builder()
                    .arn(TestData.ARN)
                    .build()
            );

        when(proxyClient.client().getResponsePlan(any(GetResponsePlanRequest.class)))
            .thenReturn(TestData.GET_RESPONSE_PLAN_RESPONSE_COMPLETE);

        when(proxyClient.client().listTagsForResource(any(ListTagsForResourceRequest.class)))
            .thenReturn(ListTagsForResourceResponse.builder().tags(TestData.API_TAGS_1).build());

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

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

        verify(sdkClient, times(1)).createResponsePlan(argThat((CreateResponsePlanRequest x) -> assertCreateResponsePlanRequestComplete(x)));
        verify(sdkClient, times(1)).getResponsePlan(any(GetResponsePlanRequest.class));
        assertThat(response).isNotNull();
        assertThat(response.getStatus()).isEqualTo(OperationStatus.SUCCESS);
        assertThat(response.getCallbackDelaySeconds()).isEqualTo(0);
        assertThat(response.getResourceModel()).usingRecursiveComparison().isEqualTo(RETURNED_COMPLETE_MODEL);
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();
    }

    private boolean assertCreateResponsePlanRequestComplete(CreateResponsePlanRequest createResponsePlanRequest) {
        assertThat(createResponsePlanRequest.displayName()).isEqualTo(TestData.DISPLAY_NAME);
        assertThat(createResponsePlanRequest.actions()).containsExactlyInAnyOrder(TestData.API_ACTION_1);
        assertThat(createResponsePlanRequest.engagements()).containsExactlyInAnyOrder(TestData.CONTACT, TestData.ESCALATION);
        assertThat(createResponsePlanRequest.incidentTemplate().title()).isEqualTo(TestData.TITLE);
        assertThat(createResponsePlanRequest.incidentTemplate().impact()).isEqualTo(TestData.IMPACT);
        assertThat(createResponsePlanRequest.incidentTemplate().summary()).isEqualTo(TestData.SUMMARY);
        assertThat(createResponsePlanRequest.incidentTemplate().dedupeString()).isEqualTo(TestData.DEDUP);
        assertThat(createResponsePlanRequest.incidentTemplate().notificationTargets()).containsExactlyInAnyOrder(TestData.API_NOTIFICATION_TARGET_ITEM_1, TestData.API_NOTIFICATION_TARGET_ITEM_2);
        assertThat(createResponsePlanRequest.incidentTemplate().incidentTags()).isEqualTo(TestData.API_TAGS_1);
        assertThat(createResponsePlanRequest.chatChannel()).isEqualTo(TestData.API_CHAT_CHANNEL);
        return true;
    }

    public static final ResourceModel RETURNED_COMPLETE_MODEL = ResourceModel.builder()
        .arn(TestData.ARN)
        .name(TestData.NAME)
        .displayName(TestData.DISPLAY_NAME)
        .chatChannel(TestData.CHAT_CHANNEL)
        .incidentTemplate(
            IncidentTemplate.builder()
                .title(TestData.TITLE)
                .impact(TestData.IMPACT)
                .dedupeString(TestData.DEDUP)
                .summary(TestData.SUMMARY)
                .notificationTargets(ImmutableList.of(
                    NotificationTargetItem.builder().snsTopicArn(TestData.CHAT_SNS_1).build(),
                    NotificationTargetItem.builder().snsTopicArn(TestData.CHAT_SNS_2).build()
                ))
                .incidentTags(TestData.TAGS_1)
                .build()
        )
        .actions(ImmutableList.of(Action.builder().ssmAutomation(TestData.SSM_AUTOMATION_1).build()))
        .engagements(ImmutableSet.of(TestData.CONTACT, TestData.ESCALATION))
        .tags(TestData.TAGS_1)
        .build();

    public static final ResourceModel DESIRED_COMPLETE_MODEL = ResourceModel.builder()
        .name(TestData.NAME)
        .displayName(TestData.DISPLAY_NAME)
        .chatChannel(TestData.CHAT_CHANNEL)
        .incidentTemplate(
            IncidentTemplate.builder()
                .title(TestData.TITLE)
                .impact(TestData.IMPACT)
                .summary(TestData.SUMMARY)
                .dedupeString(TestData.DEDUP)
                .impact(TestData.IMPACT)
                .notificationTargets(ImmutableList.of(
                    NotificationTargetItem.builder().snsTopicArn(TestData.CHAT_SNS_1).build(),
                    NotificationTargetItem.builder().snsTopicArn(TestData.CHAT_SNS_2).build()
                ))
                .incidentTags(TestData.TAGS_1)
                .build()
        )
        .actions(ImmutableList.of(Action.builder().ssmAutomation(TestData.SSM_AUTOMATION_1).build()))
        .engagements(ImmutableSet.of(TestData.CONTACT, TestData.ESCALATION))
        .tags(TestData.TAGS_1)
        .build();
}