package org.gcube.data.transfer.library.transferers;

import java.net.MalformedURLException;
import java.net.URL;

import lombok.extern.slf4j.Slf4j;

import org.gcube.data.transfer.library.caches.CapabilitiesCache;
import org.gcube.data.transfer.library.faults.HostingNodeNotFoundException;
import org.gcube.data.transfer.library.faults.ServiceNotFoundException;
import org.gcube.data.transfer.library.faults.UnreachableNodeException;
import org.gcube.data.transfer.model.TransferCapabilities;
@Slf4j
public class TransfererBuilder {

	private static final int timeout=10*1000;


	//e.g. http://pc-fabio.isti.cnr.it:8080/data-transfer-service/gcube/service

	public static Transferer getTransfererByHost(String endpoint) throws UnreachableNodeException, ServiceNotFoundException{
		log.debug("Get transferer by Host "+endpoint);
		try{
			URL url=new URL(endpoint);

			String hostname=url.getProtocol()+"://"+url.getHost()+":"+url.getPort();
			//TODO Implement checks

			//		if(!Utils.pingURL(host, timeout)) throw new UnreachableNodeException("No response from host in "+timeout);
			//		String finalHost=host;		
			//		if(!finalHost.endsWith(ServiceConstants.APPLICATION_PATH)){
			//			// adjust host
			//			finalHost=finalHost+(host.endsWith("/")?"":"/")+"data-transfer-service"+ServiceConstants.APPLICATION_PATH;			
			//		}
			//		
			//		
			//		if(!Utils.pingURL(finalHost, timeout)) throw new ServiceNotFoundException("No DT Service found @ "+finalHost);
			//		log.debug("Host is ok, getting targetCapabilities");
			TransferCapabilities cap=CapabilitiesCache.getInstance().getObject(hostname);
			return new HTTPTransferer(cap); 
		}catch(MalformedURLException e){
			throw new ServiceNotFoundException(e);
		}
	}
	public static Transferer getTransfererByhostingNodeId(String hostId) throws HostingNodeNotFoundException, UnreachableNodeException, ServiceNotFoundException{
		String hostname=retrieveHostnameByNodeId(hostId);
		return getTransfererByHost(hostname);
	}


	private static String retrieveHostnameByNodeId(String nodeId)throws HostingNodeNotFoundException{
		//TODO implement endpoint retrieval
		return null;
	}
}