MetroStationService.java

/*******************************************************************************
 * Copyright (c) 2011 Michel DAVID mimah35-at-gmail.com
 * 
 * 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.
 * 
 * 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 fr.gotorennes.remote;

import java.util.ArrayList;
import java.util.List;

import org.json.JSONException;
import org.json.JSONObject;

import android.content.Context;
import fr.gotorennes.domain.MetroStation;

public class MetroStationService extends RemoteService<MetroStation> {

	private static MetroStationService instance;

	private MetroStationTopoService metroTopoService;
	private MetroStationOrderService metroOrderService;

	private MetroStationService(Context context) {
		super();
		metroTopoService = MetroStationTopoService.getInstance(context);
		metroOrderService = MetroStationOrderService.getInstance(context);
	}

	public static synchronized MetroStationService getInstance(Context context) {
		if (instance == null) {
			instance = new MetroStationService(context);
		}
		return instance;
	}

	private List<MetroStation> cache = null;

	public List<MetroStation> getMetroStations() {
		if (cache == null) {
			cache = loadList();
		}
		return cache != null ? new ArrayList<MetroStation>(cache) : cache;
	}

	public List<MetroStation> getMetroStations(double latitudeMin, double latitudeMax, double longitudeMax, double longitudeMin) {
		List<MetroStation> metroStations = getMetroStations();
		if (metroStations == null) {
			return null;
		}

		List<MetroStation> result = new ArrayList<MetroStation>();
		for (MetroStation metro : metroStations) {
			if (metro.latitude >= latitudeMin && metro.latitude <= latitudeMax && metro.longitude >= longitudeMin && metro.longitude <= longitudeMax) {
				result.add(metro);
			}
		}
		return result;
	}

	public List<MetroStation> getProximityMetroStations(double latitude, double longitude) {
		return loadProximityList(latitude, longitude, 3);
	}

	public MetroStation getMetroStation(String id) {
		List<MetroStation> metroStations = getMetroStations();
		if (metroStations == null) {
			return null;
		}
		for (MetroStation metroStation : metroStations) {
			if (metroStation.id.equals(id)) {
				return metroStation;
			}
		}
		return null;
	}

	@Override
	protected MetroStation populate(JSONObject jsonObject) throws JSONException {
		MetroStation metroStation = metroTopoService.getMetroStation(jsonObject.getString("idstation"));
		if (metroStation == null) {
			metroStation = new MetroStation();
			metroStation.id = jsonObject.getString("idstation");
			metroStation.name = jsonObject.getString("nom");
			metroStation.latitude = jsonObject.getJSONArray("coordonnees").getDouble(0);
			metroStation.longitude = jsonObject.getJSONArray("coordonnees").getDouble(1);
		}
		metroStation.sequence = metroOrderService.getMetroStationOrder(metroStation.name);
		metroStation.status = jsonObject.getString("etat");
		return metroStation;
	}

	@Override
	protected String getDataSet() {
		return "tco-metro-stations-etat-tr";
	}

}