package com.nus.app1;
import android.Manifest;
import android.app.Activity;
import android.content.Context;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;

public class GoogleMapActivity extends Activity implements OnMapReadyCallback, LocationListener
{
    private static final int PERMISSION_REQUEST_CODE1 = 101;
    private GoogleMap map;
    Button btncurrentlocation,btnlastknownlocation;
    LocationManager locationManager;
    public void onCreate(Bundle b)
    {
        super.onCreate(b);
        setContentView(R.layout.googlemaplayout);
        MapFragment mapFragment = (MapFragment) getFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);
        btncurrentlocation=findViewById(R.id.btncurrentlocation);
        btnlastknownlocation=findViewById(R.id.btnlastknownlocation);
        btncurrentlocation.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                getCurrentLocation();
            }
        });
        btnlastknownlocation.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

            }
        });
    }
    public void getCurrentLocation()
    {
        if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)!= PackageManager.PERMISSION_GRANTED)
        {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, PERMISSION_REQUEST_CODE1);
        }
        else
        {
            locationManager=(LocationManager)getSystemService(Context.LOCATION_SERVICE);
            locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,0,0,this);
        }
    }
    public void onRequestPermissionsResult(int requestcode,String[] permissions,int[] grantresults)
    {
        if(requestcode==PERMISSION_REQUEST_CODE1)
        {
            if(grantresults.length>0 && grantresults[0]==PackageManager.PERMISSION_GRANTED)
            {
                getCurrentLocation();
            }
        }
    }
    //https://pastebin.com/3ne9n7Qq
    @Override
    public void onMapReady(GoogleMap googleMap) {
        map = googleMap;
        LatLng NUS = new LatLng(1.295150, 103.773638);
        map.addMarker(new MarkerOptions().position(NUS).title("NUS"));
        map.moveCamera(CameraUpdateFactory.newLatLng(NUS));
    }

    @Override
    public void onLocationChanged(Location location) {
        locationManager.removeUpdates(this);
        LatLng currentlocation=new LatLng(location.getLatitude(),location.getLongitude());
        map.addMarker(new MarkerOptions().position(currentlocation).title("Current Location"));
        map.moveCamera(CameraUpdateFactory.newLatLng(currentlocation));
    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {

    }

    @Override
    public void onProviderEnabled(String provider) {

    }

    @Override
    public void onProviderDisabled(String provider) {

    }
}