/*
 * This file is a part of EpnTAPClient.
 * This program aims to provide EPN-TAP support for software clients, like CASSIS spectrum analyzer.
 * See draft specifications: https://voparis-confluence.obspm.fr/pages/viewpage.action?pageId=559861
 * Copyright (C) 2016 Institut de Recherche en Astrophysique et Planétologie.
 * 
 * This program is free software: you can
 * redistribute it and/or modify it under the terms of the GNU General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or (at your option) any later
 * version. This program is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU General Public License for more details. You should have received a copy of
 * the GNU General Public License along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 */

package eu.omp.irap.vespa.epntapclient.controller;

import java.io.IOException;

import org.xml.sax.SAXException;

import eu.omp.irap.vespa.epntapclient.utils.Const;

import eu.omp.irap.vespa.epntapclient.utils.Log;

import eu.omp.irap.vespa.epntapclient.utils.Queries;

import eu.omp.irap.vespa.epntapclient.view.EpnTapMainView;
import eu.omp.irap.vespa.epntapclient.votable.controller.VOTableController;

import eu.omp.irap.vespa.epntapclient.votable.view.VOTableView;

/**
 * @author N. Jourdane
 */
public class EpnTapController {
	/** The view of EPN-TAP application. */
	EpnTapMainView view;

	/** The controller of the VOTable displaying the list of services. */
	VOTableController servicesController;

	/** The controller of the VOTable displaying the query results. */
	VOTableController resultsController;

	/** The URL of the service selected by the user on the services list panel. */
	String selectedServiceURL;

	/**
	 * Method constructor
	 */
	public EpnTapController() {

		// TODO: Get only *EPN* TAP services

		servicesController = new VOTableController(Const.DEFAULT_REGISTRY_URL, "ADQL",
				Queries.GET_TAP_SERVICES);

		resultsController = new VOTableController();

		VOTableView serviceView = servicesController.getView();
		VOTableView resultsView = resultsController.getView();
		view = new EpnTapMainView(this, serviceView, resultsView);
		setSelectedService(0);

	}

	/**
	 * @return the EPN-TAP view.
	 */
	public EpnTapMainView getView() {
		return view;
	}

	/**
	 * @return The controller of the VOTable displaying the query results.
	 */
	public VOTableController getResultsController() {
		return resultsController;
	}

	/**
	 * @return The controller of the VOTable displaying the list of services.
	 */
	public VOTableController getServicesController() {
		return servicesController;
	}

	/**
	 * @param row The row selected by the user on the Jtable.
	 */
	public void setSelectedService(int row) {
		String serviceURL = (String) view.getServices().getValueAt(1, row);
		if (!serviceURL.equals(selectedServiceURL)) {
			selectedServiceURL = serviceURL;
			Log.LOGGER.info("Selected service URL: " + selectedServiceURL);
		}
	}

	/**
	 * @param query The query to send to the selected service.

	 * @throws SAXException Can not change the VOTable schema location.
	 * @throws IOException If VOTable can not be parsed or there is more than one VOTable.

	 */

	public void sendQuery(String query) throws IOException, SAXException {

		Log.LOGGER.info("Sending query: " + query + " on " + selectedServiceURL);
		resultsController.fillTable(selectedServiceURL, "ADQL", query);
	}

}