package software.amazon.iot.resourcespecificlogging;

import software.amazon.awssdk.services.iot.model.InternalFailureException;
import software.amazon.awssdk.services.iot.model.InvalidRequestException;
import software.amazon.awssdk.services.iot.model.LimitExceededException;
import software.amazon.awssdk.services.iot.model.ServiceUnavailableException;
import software.amazon.awssdk.services.iot.model.ThrottlingException;
import software.amazon.awssdk.services.iot.model.UnauthorizedException;
import software.amazon.cloudformation.proxy.AmazonWebServicesClientProxy;
import software.amazon.cloudformation.proxy.HandlerErrorCode;
import software.amazon.cloudformation.proxy.Logger;
import software.amazon.cloudformation.proxy.OperationStatus;
import software.amazon.cloudformation.proxy.ProgressEvent;
import software.amazon.cloudformation.proxy.ResourceHandlerRequest;
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.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

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

    private ReadHandler handler;

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

    @Test
    public void handleRequest_SimpleSuccess() {
        ResourceModel model = createDefaultModelWithTargetId();

        ResourceHandlerRequest<ResourceModel> request = createCfnRequest(model);

        when(proxy.injectCredentialsAndInvokeV2(eq(LIST_REQUEST), any()))
                .thenReturn(LIST_RESPONSE);

        final ProgressEvent<ResourceModel, CallbackContext> response
                = handler.handleRequest(proxy, request, null, 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.getMessage()).isNull();
        assertThat(response.getErrorCode()).isNull();
        assertThat(response.getResourceModel()).isEqualTo(model);
    }

    @Test
    public void handleTargetLoggingResourceNotFound() {
        ResourceModel model = createDefaultModelWithTargetId();

        ResourceHandlerRequest<ResourceModel> request = createCfnRequest(model);

        when(proxy.injectCredentialsAndInvokeV2(eq(LIST_REQUEST), any()))
                .thenReturn(LIST_EMPTY_RESPONSE);

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

        ProgressEvent<ResourceModel, CallbackContext> expectedResult = ProgressEvent.failed(
                model, null,
                HandlerErrorCode.NotFound,
                "The logLevel for this target doesn't exist.");

        assertThat(response).isEqualTo(expectedResult);
    }

    @Test
    public void handleRequest_InvalidRequestException() {

        ResourceHandlerRequest<ResourceModel> cfnRequest = createCfnRequest(createDefaultModelWithTargetId());

        doThrow(InvalidRequestException.class)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(), any());

        final ProgressEvent<ResourceModel, CallbackContext> progressEvent =
                handler.handleRequest(proxy, cfnRequest, null, logger);
        assertThat(progressEvent.getStatus()).isEqualTo(OperationStatus.FAILED);
        assertThat(progressEvent.getErrorCode()).isEqualTo(HandlerErrorCode.InvalidRequest);
    }

    @Test
    public void handleRequest_UnauthorizedException() {

        ResourceHandlerRequest<ResourceModel> cfnRequest = createCfnRequest(createDefaultModelWithTargetId());

        doThrow(UnauthorizedException.class)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(), any());

        final ProgressEvent<ResourceModel, CallbackContext> progressEvent =
                handler.handleRequest(proxy, cfnRequest, null, logger);
        assertThat(progressEvent.getStatus()).isEqualTo(OperationStatus.FAILED);
        assertThat(progressEvent.getErrorCode()).isEqualTo(HandlerErrorCode.AccessDenied);
    }

    @Test
    public void handleRequest_InternalFailureException() {

        ResourceHandlerRequest<ResourceModel> cfnRequest = createCfnRequest(createDefaultModelWithTargetId());

        doThrow(InternalFailureException.class)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(), any());

        final ProgressEvent<ResourceModel, CallbackContext> progressEvent =
                handler.handleRequest(proxy, cfnRequest, null, logger);
        assertThat(progressEvent.getStatus()).isEqualTo(OperationStatus.FAILED);
        assertThat(progressEvent.getErrorCode()).isEqualTo(HandlerErrorCode.InternalFailure);
    }

    @Test
    public void handleRequest_ThrottlingException() {

        ResourceHandlerRequest<ResourceModel> cfnRequest = createCfnRequest(createDefaultModelWithTargetId());

        doThrow(ThrottlingException.class)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(), any());

        final ProgressEvent<ResourceModel, CallbackContext> progressEvent =
                handler.handleRequest(proxy, cfnRequest, null, logger);
        assertThat(progressEvent.getStatus()).isEqualTo(OperationStatus.FAILED);
        assertThat(progressEvent.getErrorCode()).isEqualTo(HandlerErrorCode.Throttling);
    }

    @Test
    public void handleRequest_LimitExceededException() {

        ResourceHandlerRequest<ResourceModel> cfnRequest = createCfnRequest(createDefaultModelWithTargetId());

        doThrow(LimitExceededException.class)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(), any());

        final ProgressEvent<ResourceModel, CallbackContext> progressEvent =
                handler.handleRequest(proxy, cfnRequest, null, logger);
        assertThat(progressEvent.getStatus()).isEqualTo(OperationStatus.FAILED);
        assertThat(progressEvent.getErrorCode()).isEqualTo(HandlerErrorCode.ServiceLimitExceeded);
    }

    @Test
    public void handleRequest_ServiceUnavailableException() {

        ResourceHandlerRequest<ResourceModel> cfnRequest = createCfnRequest(createDefaultModelWithTargetId());

        doThrow(ServiceUnavailableException.class)
                .when(proxy)
                .injectCredentialsAndInvokeV2(any(), any());

        final ProgressEvent<ResourceModel, CallbackContext> progressEvent =
                handler.handleRequest(proxy, cfnRequest, null, logger);
        assertThat(progressEvent.getStatus()).isEqualTo(OperationStatus.FAILED);
        assertThat(progressEvent.getErrorCode()).isEqualTo(HandlerErrorCode.GeneralServiceException);
    }
}