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

import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;

import org.gcube.informationsystem.model.entity.Context;
import static org.gcube.resourcemanagement.manager.io.rs.RMContextPath.*;

import org.gcube.resourcemanagement.manager.io.exceptions.CodeException;
import org.gcube.resourcemanagement.manager.webapp.ResourceInitializer;
import org.gcube.resourcemanagement.manager.webapp.context.CreateRequest;
import org.gcube.resourcemanagement.manager.webapp.context.ResponseFromResourceRegistry;
import org.gcube.resourcemanagement.manager.webapp.context.ContextHolder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Methods for manipulating {@link Context}s.
 * 
 * @author Manuele Simi (ISTI-CNR)
 *
 */
@Path(CONTEXT_ROOT)
public class RMContext {

	private static Logger logger = LoggerFactory.getLogger(RMContext.class);

	/*
	 * e.g. POST /resource-manager/context/
	 */
	@POST
	@Produces(ResourceInitializer.APPLICATION_JSON_CHARSET_UTF_8)
	public Response create(String json, @QueryParam(FORCE_RRURL_PARAM) String rrURL) throws CodeException {
		logger.info("Requested to create context {} with json {}", Context.NAME, json);
		logger.info("Force URL: " + rrURL);
		Response response;
		ContextHolder holder = new ContextHolder(json);
		ResponseFromResourceRegistry returned = CreateRequest.fromHolder(holder).forceURL(rrURL).submit();
		logger.debug("Returned " + returned.wasSuccessful());
		if (returned.wasSuccessful()) {
			response = Response.status(Status.CREATED)
					.entity(returned.getMessage().map(m -> m).orElse("Context successfully created."))
					.type(ResourceInitializer.APPLICATION_JSON_CHARSET_UTF_8).build();
		} else {
			if (returned.getException().isPresent())
				throw returned.getException().get();
			response = Response.status(Status.BAD_REQUEST)
					.entity(returned.getMessage().map(m -> m).orElse("Failed to create the context.")).build();
		}
		return response;
	}
}