BikeStationService.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.HashMap;
import java.util.List;
import java.util.Map;

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

import android.content.Context;
import android.util.Log;
import fr.gotorennes.domain.BikeStation;

public class BikeStationService extends RemoteService<BikeStation> {

	private static BikeStationService instance;

	private BikeStationTopoService bikeTopoService;

	private BikeStationService(Context context) {
		super();
		bikeTopoService = BikeStationTopoService.getInstance(context);
	}

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

	private long lastUpdate = 0;
	private List<BikeStation> cache = null;

	public List<BikeStation> getBikeStations() {
		if (cache == null || System.currentTimeMillis() - lastUpdate > 60000) {
			cache = loadList();
			if (cache != null && !cache.isEmpty()) {
				lastUpdate = System.currentTimeMillis();
			}
		}
		return cache != null ? new ArrayList<BikeStation>(cache) : cache;
	}

	public List<BikeStation> getBikeStations(double latitudeMin, double latitudeMax, double longitudeMax, double longitudeMin) {
		List<BikeStation> stations = getBikeStations();
		if (stations == null) {
			return null;
		}

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

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

	public BikeStation getBikeStation(String id) {
		return loadObject("refine.idstation="+id);
	}

	@Override
	protected BikeStation populate(JSONObject jsonObject) throws JSONException {
		BikeStation bikeStation = bikeTopoService.getBikeStation(jsonObject.getInt("idstation"));
		if (bikeStation == null) {
			bikeStation = new BikeStation();
			bikeStation.id = jsonObject.getInt("idstation");
			bikeStation.name = jsonObject.getString("nom");
			bikeStation.latitude = jsonObject.getJSONArray("coordonnees").getDouble(0);
			bikeStation.longitude = jsonObject.getJSONArray("coordonnees").getDouble(1);
		}

		if ("En fonctionnement".equals(jsonObject.getString("etat"))) {
			bikeStation.state = 1;
		}

		bikeStation.bikesAvailable = Integer.parseInt(jsonObject.getString("nombrevelosdisponibles"));
		bikeStation.slotsAvailable = Integer.parseInt(jsonObject.getString("nombreemplacementsdisponibles"));

		return bikeStation;
	}

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

}