package org.gcube.resourcemanagement.manager.webapp.context;

import java.util.Objects;

import org.gcube.informationsystem.model.entity.Context;
import org.gcube.informationsystem.resourceregistry.api.exceptions.ResourceRegistryException;
import org.gcube.informationsystem.resourceregistry.api.exceptions.context.ContextAlreadyPresentException;
import org.gcube.resourcemanagement.manager.io.exceptions.CodeException;
import org.gcube.resourcemanagement.manager.io.exceptions.RMCode;

/**
 * Actions that can be performed on the context.
 * 
 * @author Manuele Simi (ISTI-CNR)
 *
 */
public final class CreateRequest extends RequestToResourceRegistry {

	private Context context;

	private CreateRequest(Context context) {
		this.context = context;
	}

	public static CreateRequest fromHolder(ContextHolder holder) {
		Objects.requireNonNull(holder);
		return new CreateRequest(holder.getContext());
	}

	/* (non-Javadoc)
	 * @see org.gcube.resourcemanagement.manager.webapp.context.RequestToResourceRegistry#validate()
	 */
	@Override
	public CreateRequest validate() throws Exception {
		//TODO: to implement 
		if (Objects.nonNull(this.context.getParent())) {
			throw new Exception("Unable to manage a context with parent.");
		}
		return this;
	}

	/* (non-Javadoc)
	 * @see org.gcube.resourcemanagement.manager.webapp.context.RequestToResourceRegistry#send()
	 */
	@Override
	protected ResponseFromResourceRegistry send() {
		try {
			Context created = resourceRegistryContextClient.create(context);
			if (Objects.nonNull(created)) {
				
			} else {
				return ResponseFromResourceRegistry.newFailureResponse("Invalid response from the RR (null?)");
			}
		} catch (ContextAlreadyPresentException cape) {
			return ResponseFromResourceRegistry.fromException(new CodeException(RMCode.CONTEXT_ALREADY_EXIST));
		} catch (ResourceRegistryException e) {
			return ResponseFromResourceRegistry.fromException(new CodeException(RMCode.GENERIC_ERROR_FROM_RR));
		}
		return ResponseFromResourceRegistry.newSuccessResponseWithMessage("Context successfully created.");
	}

}