package org.gcube.dataharvest.harvester;

import java.io.IOException;
import java.net.MalformedURLException;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Properties;

import org.gcube.dataharvest.datamodel.Harvest;
import org.gcube.dataharvest.utils.Utils;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class VreUsersHarvester extends BasicHarvester {
	// private final String CATEGORY_NAME = "Accounting";
	private static Logger logger = LoggerFactory.getLogger(VreUsersHarvester.class);

	public VreUsersHarvester(String start, String end) throws ParseException {
		super(start, end);
	}

	public VreUsersHarvester(Date start, Date end) throws ParseException {
		super(start, end);
	}

	@Override
	public List<Harvest> getData() throws Exception {
		ArrayList<Harvest> data = new ArrayList<Harvest>();
		Properties props = readServiceEndpoint();
		String[] vres = getActiveVREs(true);
		for (String vre : vres) {
			String key = vre.substring(vre.lastIndexOf("/") + 1);
			String token = props.getProperty(key);
			try {
				int measure = get(token);
				Harvest harvest = new Harvest(Harvest.USERS, vre, measure);
				data.add(harvest);
				logger.debug(harvest.toString());
			} catch (Exception x) {
				logger.error("VreUsersHarvester::getData. " + vre + ". " + x.getLocalizedMessage());
			}
		}
		return data;
	}

	private int get(String token) throws MalformedURLException, IOException {
		int userNumber = 0;
		// la seguente stringa deve essere letta dinamicamente
		String url = "https://socialnetworking1.d4science.org/social-networking-library-ws/rest/2/users/get-all-usernames?gcube-token=";
		JSONObject jsonObject = new JSONObject(Utils.getJson(url + token));
		Boolean success = (Boolean) jsonObject.get("success");
		if (success == false) {
			String message = "get-all-usernames returned an error. token: " + token;
			logger.error(message);
			throw new IOException(message);
		}
		userNumber = jsonObject.getJSONArray("result").length();
		return userNumber;
	}

	// private Properties readServiceEndpoint() throws Exception {
	// Properties props = new Properties();
	// String scope = "/d4science.research-infrastructures.eu";
	// ScopeProvider.instance.set("/d4science.research-infrastructures.eu");
	//
	// SimpleQuery query = queryFor(ServiceEndpoint.class);
	// query.addCondition("$resource/Profile/Name/text() eq '" +
	// RUNTIME_RESOURCE_NAME + "'");
	// query.addCondition("$resource/Profile/Category/text() eq '" +
	// CATEGORY_NAME + "'");
	//
	// DiscoveryClient<ServiceEndpoint> client =
	// clientFor(ServiceEndpoint.class);
	// String password = null;
	// try {
	// List<ServiceEndpoint> list = client.submit(query);
	// if (list.size() > 1) {
	// logger.error("Too many Service Endpoints having name " +
	// RUNTIME_RESOURCE_NAME
	// + " in this scope having Category " + CATEGORY_NAME);
	// } else if (list.size() == 0) {
	// logger.error("There is no Service Endpoint having name " +
	// RUNTIME_RESOURCE_NAME
	// + " and Category " + CATEGORY_NAME + " in this scope " + scope);
	// } else {
	// for (ServiceEndpoint res : list) {
	// AccessPoint[] accessPoints = (AccessPoint[]) res.profile().accessPoints()
	// .toArray(new AccessPoint[res.profile().accessPoints().size()]);
	// for (AccessPoint found : accessPoints) {
	// password =
	// org.gcube.common.encryption.StringEncrypter.getEncrypter().decrypt(found.password());
	// for (ServiceEndpoint.Property prop : found.properties()) {
	// props.setProperty(prop.name(),
	// org.gcube.common.encryption.StringEncrypter.getEncrypter().decrypt(prop.value()));
	// }
	// }
	//
	// }
	// }
	// return props;
	// } catch (Exception e) {
	// logger.error(e.getLocalizedMessage());
	// throw e;
	// }
	// }

	// public static void main(String[] argv) {
	// try {
	// VreUsersHarvester a = new VreUsersHarvester("2017-01-01", "2017-02-01");
	// List<Harvest> list = a.getData();
	// for(Harvest l : list) {
	// System.out.println(l.toString());
	// }
	// } catch (Exception e) {
	// // TODO Auto-generated catch block
	// e.printStackTrace();
	// }
	// }
}