package eu.dnetlib.ariadneplus.publisher;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import eu.dnetlib.ariadneplus.graphdb.GraphDBClient;
import eu.dnetlib.ariadneplus.graphdb.GraphDBClientFactory;

/**
 * @author enrico.ottonello
 *
 */

@Component
public class AriadnePlusPublisherHelper {

	private static final Log log = LogFactory.getLog(AriadnePlusPublisherHelper.class);

	public enum AriadnePlusTargets{
		GRAPHDB
	}

	@Autowired
	private GraphDBClientFactory graphdbClientFactory;

	public void publish(final String record, final AriadnePlusTargets target) throws AriadnePlusPublisherException {
		switch(target){
		case GRAPHDB:
			publishGraphDB(record);
			break;
		default: throw new AriadnePlusPublisherException("Target "+target+" not supported yet");
		}

	}

	public long unpublish(final String datasourceInterface, final AriadnePlusTargets target) throws AriadnePlusPublisherException {
		long res = 0;
		switch(target){
		case GRAPHDB:
			res = unpublishGraphDB(datasourceInterface);
			break;
		default: throw new AriadnePlusPublisherException("Target "+target+" not supported yet");
		}
		return res;
	}

	private void publishGraphDB(final String record) throws AriadnePlusPublisherException {
		log.debug("Publishing on graphdb");
		GraphDBClient graphDBClient = this.graphdbClientFactory.getGraphDBClient();
		graphDBClient.feed(record);
	}

	private long unpublishGraphDB(final String datasourceInterface) {
		log.info("Unpublishing from graphdb "+datasourceInterface);
		GraphDBClient graphDBClient = this.graphdbClientFactory.getGraphDBClient();
		long deletedTriples =  graphDBClient.drop(datasourceInterface);
		log.info("# triples deleted for "+datasourceInterface+": "+deletedTriples);
		return deletedTriples;
	}
}