package com.amazonaws.iot.provisioningtemplate;

import software.amazon.awssdk.awscore.exception.AwsServiceException;
import software.amazon.awssdk.core.exception.SdkClientException;
import software.amazon.awssdk.services.iot.IotClient;
import software.amazon.awssdk.services.iot.model.DeleteConflictException;
import software.amazon.awssdk.services.iot.model.DeleteProvisioningTemplateRequest;
import software.amazon.awssdk.services.iot.model.InternalFailureException;
import software.amazon.awssdk.services.iot.model.InvalidRequestException;
import software.amazon.awssdk.services.iot.model.IotException;
import software.amazon.awssdk.services.iot.model.ResourceNotFoundException;
import software.amazon.awssdk.services.iot.model.ThrottlingException;
import software.amazon.awssdk.services.iot.model.UnauthorizedException;
import software.amazon.cloudformation.exceptions.CfnAccessDeniedException;
import software.amazon.cloudformation.exceptions.CfnInvalidRequestException;
import software.amazon.cloudformation.exceptions.CfnNotFoundException;
import software.amazon.cloudformation.exceptions.CfnResourceConflictException;
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.Logger;
import software.amazon.cloudformation.proxy.ProgressEvent;
import software.amazon.cloudformation.proxy.ResourceHandlerRequest;

public class DeleteHandler extends BaseHandler<CallbackContext> {
    private static final String OPERATION = "DeleteProvisioningTemplate";

    private IotClient iotClient;

    public DeleteHandler() {
        iotClient = ClientBuilder.getClient();
    }

    public DeleteHandler(IotClient iotClient) {
        this.iotClient = iotClient;
    }

    @Override
    public ProgressEvent<ResourceModel, CallbackContext> handleRequest(
            final AmazonWebServicesClientProxy proxy,
            final ResourceHandlerRequest<ResourceModel> request,
            final CallbackContext callbackContext,
            final Logger logger) {

        final ResourceModel model = request.getDesiredResourceState();
        final String templateName = model.getTemplateName();
        final DeleteProvisioningTemplateRequest templateRequest = DeleteProvisioningTemplateRequest.builder()
                .templateName(templateName)
                .build();

        try {
            proxy.injectCredentialsAndInvokeV2(templateRequest, iotClient::deleteProvisioningTemplate);
            logger.log(String.format("%s [%s] deleted successfully", ResourceModel.TYPE_NAME, templateName));

        } catch (final InternalFailureException e) {
            throw new CfnServiceInternalErrorException(OPERATION, e);
        } catch (final InvalidRequestException e) {
            throw new CfnInvalidRequestException(e.getMessage(), e);
        } catch (final DeleteConflictException e) {
            throw new CfnResourceConflictException(ResourceModel.TYPE_NAME, templateName, e.getMessage());
        } catch (final ThrottlingException e) {
            throw new CfnThrottlingException(OPERATION, e);
        } catch (final UnauthorizedException e) {
            throw new CfnAccessDeniedException(OPERATION, e);
        } catch (final ResourceNotFoundException e) {
            // Don't error on missing resources, just allow the default success to return
        }

        return ProgressEvent.defaultSuccessHandler(model);
    }
}