package software.amazon.lightsail.disk;

import lombok.val;
import software.amazon.awssdk.services.lightsail.LightsailClient;
import software.amazon.awssdk.utils.StringUtils;
import software.amazon.cloudformation.proxy.AmazonWebServicesClientProxy;
import software.amazon.cloudformation.proxy.Logger;
import software.amazon.cloudformation.proxy.ProgressEvent;
import software.amazon.cloudformation.proxy.ProxyClient;
import software.amazon.cloudformation.proxy.ResourceHandlerRequest;
import software.amazon.lightsail.disk.helpers.handler.DiskHandler;
import software.amazon.lightsail.disk.helpers.resource.Disk;

/**
 * Create Handler does invoked for the creation flow of the LightSail Disk in CloudFormation Stack.
 */
public class CreateHandler extends BaseHandlerStd {
    private Logger logger;

    protected ProgressEvent<ResourceModel, CallbackContext> handleRequest(final AmazonWebServicesClientProxy proxy,
            final ResourceHandlerRequest<ResourceModel> request, final CallbackContext callbackContext,
            final ProxyClient<LightsailClient> proxyClient, final Logger logger) {

        this.logger = logger;
        val diskHandler = new DiskHandler(proxy, callbackContext, request.getDesiredResourceState(), logger,
                proxyClient, request);
        val disk = new Disk(request.getDesiredResourceState(), logger, proxyClient, request);

        return ProgressEvent.progress(request.getDesiredResourceState(), callbackContext).then(progress -> {
            // NOTE: Availability Zone is not required on the model as we allow for this to be auto-picked
            ResourceModel resourceModel = progress.getResourceModel();
            if (StringUtils.isEmpty(resourceModel.getAvailabilityZone())) {
                logger.log("Picking the Availability Zone..");
                resourceModel.setAvailabilityZone(disk.getFirstAvailabilityZone());
            }
            return ProgressEvent.progress(resourceModel, progress.getCallbackContext());
        }).then(diskHandler::handleCreate).then(
                progress -> new ReadHandler().handleRequest(proxy, request, callbackContext, proxyClient, logger));
    }
}