package net.touchsf.testnewgoogleplayservices;

import android.app.Service;
import android.content.Intent;
import android.location.Location;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;

public class LocationService extends Service implements GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener, LocationListener {

    // LogCat tag
    private static final String TAG = LocationService.class.getSimpleName();

    private final static int PLAY_SERVICES_RESOLUTION_REQUEST = 1000;

    private Location mLastLocation;

    // Google client to interact with Google API
    private GoogleApiClient mGoogleApiClient;

    // boolean flag to toggle periodic location updates
    private boolean mRequestingLocationUpdates = false;

    private LocationRequest mLocationRequest;

    // Location updates intervals in sec
    private static int UPDATE_INTERVAL = 10000; // 10 sec
    private static int FATEST_INTERVAL = 5000; // 5 sec
    private static int DISPLACEMENT = 40; // 10 meters


    @Override
    public void onCreate() {
        super.onCreate();

        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API).build();

    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        if (mGoogleApiClient != null) {
            mGoogleApiClient.connect();
            togglePeriodicLocationUpdates();
        }
        return START_NOT_STICKY;
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    protected void createLocationRequest() {
        mLocationRequest = new LocationRequest();
        mLocationRequest.setInterval(UPDATE_INTERVAL);
        mLocationRequest.setFastestInterval(FATEST_INTERVAL);
        mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        mLocationRequest.setSmallestDisplacement(DISPLACEMENT);
    }

    private void togglePeriodicLocationUpdates() {
        mGoogleApiClient.connect();

        if (!mRequestingLocationUpdates) {

            mRequestingLocationUpdates = true;

            startLocationUpdates();

            Log.d(TAG, "Periodic location updates started!");

        } else {

            mRequestingLocationUpdates = false;

            // Stopping the location updates
            stopLocationUpdates();

            Log.d(TAG, "Periodic location updates stopped!");
        }
    }

    protected void stopLocationUpdates() {
        LocationServices.FusedLocationApi.removeLocationUpdates(
                mGoogleApiClient, this);
    }

    protected void startLocationUpdates() {
        mGoogleApiClient.connect();
        LocationServices.FusedLocationApi.requestLocationUpdates(
                mGoogleApiClient, mLocationRequest, this);

    }

    @Override
    public void onConnected(Bundle arg0) {
        createLocationRequest();
    }

    @Override
    public void onConnectionSuspended(int arg0) {
        mGoogleApiClient.connect();
    }

    @Override
    public void onConnectionFailed(ConnectionResult result) {
        Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = "
                + result.getErrorCode());
    }

    @Override
    public void onLocationChanged(Location location) {
        // Assign the new location
        mLastLocation = location;

        Toast.makeText(getApplicationContext(), "Location changed!",
                Toast.LENGTH_SHORT).show();
    }

    @Override
    public boolean stopService(Intent name) {
        return super.stopService(name);
    }

}