package software.amazon.opensearchserverless.securityconfig;

import software.amazon.awssdk.services.opensearchserverless.OpenSearchServerlessClient;
import software.amazon.awssdk.services.opensearchserverless.model.DeleteSecurityConfigRequest;
import software.amazon.awssdk.services.opensearchserverless.model.DeleteSecurityConfigResponse;
import software.amazon.awssdk.services.opensearchserverless.model.ResourceNotFoundException;
import software.amazon.awssdk.services.opensearchserverless.model.ValidationException;
import software.amazon.cloudformation.exceptions.CfnInvalidRequestException;
import software.amazon.cloudformation.exceptions.CfnNotFoundException;
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 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.junit.jupiter.MockitoExtension;
import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.mockito.Mockito.*;

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

    private static final String MOCK_SECURITY_CONFIG_ID = "1";
    private static final String MOCK_INVALID_SECURITY_CONFIG_ID = "InvalidSecurityConfigId";
    private AmazonWebServicesClientProxy proxy;
    private ProxyClient<OpenSearchServerlessClient> proxyClient;
    private OpenSearchServerlessClient openSearchServerlessClient;
    private DeleteHandler handler;

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

    @AfterEach
    public void tear_down(org.junit.jupiter.api.TestInfo testInfo) {
        if(!testInfo.getTags().contains("skipSdkInteraction")) {
            verify(openSearchServerlessClient, atLeastOnce()).serviceName();
            verifyNoMoreInteractions(openSearchServerlessClient);
        }
    }

    @Test
    public void handleRequest_SimpleSuccess() {
        final ResourceModel model = ResourceModel.builder().id(MOCK_SECURITY_CONFIG_ID).build();
        final ResourceHandlerRequest<ResourceModel> request = ResourceHandlerRequest.<ResourceModel>builder().desiredResourceState(model).build();

        final DeleteSecurityConfigResponse deleteSecurityConfigResponse = DeleteSecurityConfigResponse.builder().build();
        when(openSearchServerlessClient.deleteSecurityConfig(any(DeleteSecurityConfigRequest.class))).thenReturn(deleteSecurityConfigResponse);

        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()).isNull();
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();
        verify(openSearchServerlessClient).deleteSecurityConfig(any(DeleteSecurityConfigRequest.class));
    }

    @Test
    public void handleRequest_WhenResourceDoesNotExist_ThrowsException() {
        when(openSearchServerlessClient.deleteSecurityConfig(any(DeleteSecurityConfigRequest.class))).thenThrow(ResourceNotFoundException.builder().build());

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

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

        verify(openSearchServerlessClient).deleteSecurityConfig(any(DeleteSecurityConfigRequest.class));
    }

    @Test
    public void handleRequest_WhenValidationIssue_ThrowsException() {
        when(openSearchServerlessClient.deleteSecurityConfig(any(DeleteSecurityConfigRequest.class))).thenThrow(ValidationException.builder().build());

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

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

        verify(openSearchServerlessClient).deleteSecurityConfig(any(DeleteSecurityConfigRequest.class));
    }

    @Test
    @org.junit.jupiter.api.Tag("skipSdkInteraction")
    public void handleRequest_WithoutId_Fail() {
        final ResourceModel model = ResourceModel.builder().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.FAILED);
        assertThat(response.getResourceModels()).isNull();
        assertThat(response.getErrorCode()).isEqualTo(HandlerErrorCode.InvalidRequest);
    }
}