package org.gcube.data.publishing.gCatFeeder.service.engine.impl;

import java.util.Collection;

import javax.inject.Inject;

import org.gcube.data.publishing.gCatFeeder.service.engine.CatalogueControllersManager;
import org.gcube.data.publishing.gCatFeeder.service.engine.CollectorsManager;
import org.gcube.data.publishing.gCatFeeder.service.engine.ExecutionManager;
import org.gcube.data.publishing.gCatFeeder.service.engine.FeederEngine;
import org.gcube.data.publishing.gCatFeeder.service.engine.PersistenceManager;
import org.gcube.data.publishing.gCatFeeder.service.model.ExecutionDescriptor;
import org.gcube.data.publishing.gCatFeeder.service.model.ExecutionDescriptorFilter;
import org.gcube.data.publishing.gCatFeeder.service.model.ExecutionRequest;
import org.gcube.data.publishing.gCatFeeder.service.model.fault.CollectorNotFound;
import org.gcube.data.publishing.gCatFeeder.service.model.fault.DescriptorNotFound;
import org.gcube.data.publishing.gCatFeeder.service.model.fault.ElementNotFound;
import org.gcube.data.publishing.gCatFeeder.service.model.fault.InvalidRequest;
import org.gcube.data.publishing.gCatFeeder.service.model.fault.PersistenceError;


public class FeederEngineImpl implements FeederEngine {

	@Inject
	private ExecutionManager executions;
	@Inject
	private CollectorsManager crawlers;
	@Inject 
	private CatalogueControllersManager catalogues;
	@Inject 
	private PersistenceManager persistence;
	
	@Override
	public ExecutionDescriptor submit(ExecutionRequest req) throws InternalError, PersistenceError, InvalidRequest {
		try{
			verifyRequest(req);
			ExecutionDescriptor related=persistence.create(req);
			executions.submit(related);
			return related;
		}catch(CollectorNotFound | DescriptorNotFound e) {
			throw new InvalidRequest(e);
		}
	}

	@Override
	public Collection<ExecutionDescriptor> get(ExecutionDescriptorFilter filter) throws PersistenceError, InvalidRequest {
		return persistence.get(filter);
	}

	@Override
	public ExecutionDescriptor getById(String id) throws PersistenceError, ElementNotFound, InvalidRequest {
		return persistence.getById(id);
	}

	
	private void verifyRequest(ExecutionRequest request) throws InternalError,CollectorNotFound,DescriptorNotFound{
		// for each requested source check if available
		// for each requested target check if available
		
	}
	
}