package org.gcube.dataharvest;

import java.io.IOException;
import java.io.InputStream;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Properties;

import org.gcube.dataharvest.dao.DatabaseManager;
import org.gcube.dataharvest.datamodel.Harvest;
import org.gcube.dataharvest.harvester.DataMethodDownloadHarvester;
import org.gcube.dataharvest.harvester.MethodInvocationHarvester;
import org.gcube.dataharvest.harvester.ResourceCatalogueHarvester;
import org.gcube.dataharvest.harvester.SocialHarvester;
import org.gcube.dataharvest.harvester.VreUsersHarvester;
import org.gcube.dataharvest.utils.ContextAuthorization;
import org.gcube.vremanagement.executor.plugin.Plugin;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class AccountingDataHarvesterPlugin extends Plugin<DataHarvestPluginDeclaration> {

	private static Logger logger = LoggerFactory.getLogger(AccountingDataHarvesterPlugin.class);
	
	private static final String PROPERTY_FILENAME = "config.properties";
	
	public static final String PARAMETER_FROM = "from";
	public static final String PARAMETER_TO = "to";
	public static final String TEST = "test";
	
	private boolean testMode = false, updateFlag = false;
	private Date dateFrom, dateTo;

	private Properties properties;
	
	private void getConfigParameters() throws IOException {
		properties = new Properties();
		InputStream input = AccountingDataHarvesterPlugin.class.getClassLoader().getResourceAsStream(PROPERTY_FILENAME);
		properties.load(input);
	}
	
	public AccountingDataHarvesterPlugin(DataHarvestPluginDeclaration pluginDeclaration) {
		super(pluginDeclaration);
	}
	
	/** {@inheritDoc} */
	@Override
	public void launch(Map<String, Object> inputs) throws Exception {
		logger.debug("DataHarvestPlugin: launch()");
		try {
			getConfigParameters();
		}catch (Exception e) {
			logger.warn("Unable to load {} file containing configuration properties. AccountingDataHarvesterPlugin will use defaults", PROPERTY_FILENAME);
		}
		
		ContextAuthorization contextAuthorization = new ContextAuthorization(properties);
		
		
		String message = "";
		DatabaseManager dbaseManager = new DatabaseManager(testMode);

		if (inputs == null) {
			message = "Invalid input parameter (null)";
			logger.error(message);
			throw new Exception(message, null);
		}

		Object from = inputs.get(PARAMETER_FROM);
		if (!checkDate(from)) {
			message = "Missing or invalid input parameter: " + PARAMETER_FROM;
			logger.error(message);
			throw new Exception(message, null);
		}
		dateFrom = (Date)from;

		Object to = inputs.get(PARAMETER_TO);
		if (!checkDate(to)) {
			message = "Missing or invalid input parameter: " + PARAMETER_TO;
			logger.error(message);
			throw new Exception(message, null);
		}
		dateTo = (Date)to;

		testMode = (inputs.get(TEST) == null) ? false : (boolean) inputs.get(TEST);
		logger.debug("TEST mode is " + testMode);
		
		setTimePeriod();
		logger.debug("Time period: " + dateFrom.toString() + " -> " + dateTo.toString());
		
		try {
			// collecting info on VRE users
			VreUsersHarvester vreUsersHarvester = new VreUsersHarvester(dateFrom, dateTo);
			List<Harvest> users = vreUsersHarvester.getData();
			if(!testMode) {
				dbaseManager.insertMonthlyData((Date) dateFrom, (Date) dateTo, users, updateFlag);
			}
		} catch (Exception x) {
			logger.error(x.getLocalizedMessage());
		}
		
		try {
			// collecting info on Res. Catalogue (Dataset, Application, Deliverables, Methods)
			ResourceCatalogueHarvester resourceCatalogueHarvester = new ResourceCatalogueHarvester(dateFrom, dateTo);
			List<Harvest> res = resourceCatalogueHarvester.getData();
			if(!testMode) {
				dbaseManager.insertMonthlyData((Date) dateFrom, (Date) dateTo, res, updateFlag);
			}
		} catch (Exception x) {
			logger.error(x.getLocalizedMessage());
		}
		
		try {
			// collecting info on Data/Method download
			DataMethodDownloadHarvester dataMethodDownloadHarvester = new DataMethodDownloadHarvester(dateFrom, dateTo);
			List<Harvest> res = dataMethodDownloadHarvester.getData();
			if(!testMode) {
				dbaseManager.insertMonthlyData((Date) dateFrom, (Date) dateTo, res, updateFlag);
			}
		} catch (Exception x) {
			logger.error(x.getLocalizedMessage());
		}
		
		try {
			// collecting info on social (posts, replies and likes)
			SocialHarvester socialHarvester = new SocialHarvester(dateFrom, dateTo);
			List<Harvest> res = socialHarvester.getData();
			if(!testMode) {
				dbaseManager.insertMonthlyData((Date) dateFrom, (Date) dateTo, res, updateFlag);
			}
		} catch (Exception x) {
			logger.error(x.getLocalizedMessage());
		}

		
		try {
			// collecting info on method invocation
			MethodInvocationHarvester methodInvocationHarvester = new MethodInvocationHarvester(dateFrom, dateTo);
			List<Harvest> res = methodInvocationHarvester.getData();
			if(!testMode) {
				dbaseManager.insertMonthlyData((Date) dateFrom, (Date) dateTo, res, updateFlag);
			}
		} catch (Exception x) {
			logger.error(x.getLocalizedMessage());
		}

	}

	/** {@inheritDoc} */
	@Override
	protected void onStop() throws Exception {
		logger.debug("DataHarvestPlugin: onStop()");
	}

	private boolean checkDate(Object date) {
		if (date == null)
			return false;
		return date instanceof java.util.Date;
	}
	
//	private void insertMonthlyData(Date from, Date to, List<Harvest> data) {
//		Dao dao = null;
//		try {
//			dao = dbConnect();
//			dao.insertMonthlyMeasure(data, from, to, false);
//		} catch (Exception e) {
//			logger.error(e.getLocalizedMessage());
//		} finally {
//			if (dao != null) {
//				try {
//					dao.disconnect();
//				} catch (DaoException e) {
//					logger.error(e.getLocalizedMessage());
//				}
//			}
//		}
//	}
//
//	private Dao dbConnect() throws DaoException {
//		DatabaseDataExplorer dde = new DatabaseDataExplorer();
//		dde.setTestMode(testMode);
//		DatabaseConnectionData dcd = dde.retrieveDatabaseInfo();
//		Dao dao = new Dao();
//		dao.init();
//		dao.connect(dcd.getUrl(), dcd.getUser(), dcd.getPassword());
//		return dao;
//	}
	
	private void setTimePeriod() {
		Calendar from = Calendar.getInstance();
		from.setTime(dateFrom);
		from.set(Calendar.HOUR_OF_DAY, 0);
		from.set(Calendar.MINUTE, 0);
		from.set(Calendar.SECOND, 0);
		dateFrom = from.getTime();

		Calendar to = Calendar.getInstance();
		to.setTime(dateTo);
		to.set(Calendar.HOUR_OF_DAY, 23);
		to.set(Calendar.MINUTE, 59);
		to.set(Calendar.SECOND, 59);
		dateTo = to.getTime();
	}

}