package dk.thoerup.traininfo;

import java.util.List;

import android.content.Context;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import dk.thoerup.traininfo.provider.ProviderFactory;
import dk.thoerup.traininfo.provider.StationProvider;

public class StationLocator implements LocationListener{

	LocationManager locManager;
	Context cntx;
	Handler hndl;

	StationProvider provider; 
	Location savedLocation = null;

	public StationLocator(Context c, Handler h) {
		cntx = c;
		hndl = h;
		
		provider = ProviderFactory.getStationProvider();
	}
	
	public List<StationBean> getStations() {
		return provider.getStations();
	}
	
	public void abortLocationListener() {
		locManager.removeUpdates(this);
	}
	
	public boolean hasLocation() {
		return savedLocation != null;
	}

	public void locateStations() {
		//http://www.google.com/uds/GlocalSearch?callback=google.search.LocalSearch.RawCompletion&context=1&lstkp=0&rsz=small&hl=en&source=gsc&gss=.com&sig=fadf0e8d483d0f70bea11d5905010a16&q=Train%20station&near=56.377424%2C9.656695&key=ABQIAAAA1XbMiDxx_BTCY2_FkPh06RRaGTYH6UMl8mADNa0YKuWNNa8VNxQEerTAUcfkyrr6OwBovxn7TDAH5Q&v=1.0&nocache=1249640467498

		locManager = (LocationManager) cntx.getSystemService(Context.LOCATION_SERVICE);
		/*//testcode
		List<String> provs = locManager.getAllProviders();
		for (String p  : provs) {
			Log.e("Provider", p);
		}
		provs = locManager.getProviders(true);
		for (String p  : provs) {
			Log.e("ActiveProvider", p);
		}
		*/
		Criteria c = new Criteria();
		c.setAccuracy(Criteria.ACCURACY_FINE);
		String bestProv = locManager.getBestProvider(c, true);
		Log.i("BestProvider", ""+bestProv);
		

		if (bestProv != null) {
			locManager.requestLocationUpdates(bestProv, 0, 0, this);
		} else {
			// message that no suitable provider was found
			hndl.sendEmptyMessage(TrainInfoList.NOPROVIDER);
		}
	}
	@Override
	public void onLocationChanged(Location location) {
		Log.i("Location", "Got location fix " + location.getLatitude() + ", " + location.getLongitude() + " accuracy=" + location.getAccuracy() + " provider=" +location.getProvider());

		savedLocation = new Location(location); //save a copy
		
		if (location.getProvider().equals("gps") && location.getAccuracy() > 100) //if we have a gps provider lets wait for a more precise fix
			return;

		locManager.removeUpdates(this);
		hndl.sendEmptyMessage(TrainInfoList.GOTLOCATION);
	}
	
	public void findNearestStations() {
		findNearestStations(savedLocation);
	}
	
	public void findNearestStations(Location location) {
		provider.lookupStations(location);
		
		if ( provider.getStations().size() > 0) 
			hndl.sendEmptyMessage(TrainInfoList.GOTSTATIONLIST);
		else
			hndl.sendEmptyMessage(TrainInfoList.LOOKUPSTATIONFAILED);
	}


	@Override
	public void onProviderDisabled(String provider) {
		// TODO Auto-generated method stub

	}


	@Override
	public void onProviderEnabled(String provider) {
		// TODO Auto-generated method stub

	}


	@Override
	public void onStatusChanged(String provider, int status, Bundle extras) {
		// TODO Auto-generated method stub

	}
	

	public static void injectMockLocation(Context cntx) {
		Location odder = new Location("gps2"); 
		odder.setLatitude(55.976632);
		odder.setLongitude(10.16407);
		
		Location kbh = new Location("gps2"); //Christiansborg 55.675092,12.578573
		kbh.setLatitude(55.675092);
		kbh.setLongitude(12.578573);
		
		Location bjbro = new Location("gps2");
		bjbro.setLatitude(56.380745);
		bjbro.setLongitude(9.655609);
		
		Location hillerod = new Location("gps");
		hillerod.setLatitude(55.929177);
		hillerod.setLongitude(12.308095);
		
		LocationManager lm = (LocationManager) cntx.getSystemService(Context.LOCATION_SERVICE);
		if (lm.getProvider("gps2") == null)
			lm.addTestProvider("gps2", false, true, true, false, false, false, false, 0, Criteria.ACCURACY_FINE );
		lm.setTestProviderEnabled("gps2", true);
		lm.setTestProviderLocation("gps2", hillerod);
	}
	
	public static void removeMockLocation(Context cntx) {
		LocationManager lm = (LocationManager) cntx.getSystemService(Context.LOCATION_SERVICE);
		if (lm.getProvider("gps2") != null)
			lm.removeTestProvider("gps2");
	}
}