package com.example.user.firebaseauthdemo;

import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Build;
import android.os.Bundle;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.Fragment;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApi;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.PendingResult;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.location.places.Place;
import com.google.android.gms.location.places.PlaceLikelihood;
import com.google.android.gms.location.places.PlaceLikelihoodBuffer;
import com.google.android.gms.location.places.Places;
import com.google.android.gms.location.places.ui.PlaceAutocompleteFragment;
import com.google.android.gms.location.places.ui.PlaceSelectionListener;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapView;
import com.google.android.gms.maps.MapsInitializer;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;

/**
 * Created by HYB on 2017. 10. 11..
 */

public class Map extends Fragment
        implements OnMapReadyCallback ,
        GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener,
        LocationListener
{

    private static final LatLng DEFAULT_LOCATION = new LatLng(37.56, 126.97);
    private static final String TAG = "googlemap_example";
    private static final int GPS_ENABLE_REQUEST_CODE = 2001;
    private static final int PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION = 2002;
    private static final int UPDATE_INTERVAL_MS = 15000;
    private static final int FASTEST_UPDATE_INTERVAL_MS = 15000;

    private GoogleMap googleMap = null;
    private MapView mapView = null;
    private GoogleApiClient googleApiClient = null;
    private Marker currentMarker = null;

    private final static int MAXENTRIES = 5;
    private String[] LikelyPlaceNames = null;
    private String[] LikelyAddresses = null;
    private String[] LikelyAttributions = null;
    private LatLng[] LikelyLatLngs = null;

    public Map()
    {

    }

    public void setCurrentLocation(Location location, String markerTitle, String markerSnippet) {
        if ( currentMarker != null ) currentMarker.remove();

        if ( location != null) {
            //현재위치의 위도 경도 가져옴
            LatLng currentLocation = new LatLng( location.getLatitude(), location.getLongitude());

            MarkerOptions markerOptions = new MarkerOptions();
            markerOptions.position(currentLocation);
            markerOptions.title(markerTitle);
            markerOptions.snippet(markerSnippet);
            markerOptions.draggable(true);
            markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE));
            currentMarker = this.googleMap.addMarker(markerOptions);

            this.googleMap.moveCamera(CameraUpdateFactory.newLatLng(currentLocation));
            return;
        }

        MarkerOptions markerOptions = new MarkerOptions();
        markerOptions.position(DEFAULT_LOCATION);
        markerOptions.title(markerTitle);
        markerOptions.snippet(markerSnippet);
        markerOptions.draggable(true);
        markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
        currentMarker = this.googleMap.addMarker(markerOptions);

        this.googleMap.moveCamera(CameraUpdateFactory.newLatLng(DEFAULT_LOCATION));
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState)
    {
        View layout = inflater.inflate(R.layout.map, container, false);

        mapView = (MapView)layout.findViewById(R.id.mapView);
        mapView.getMapAsync(this);

        PlaceAutocompleteFragment autocompleteFragment = (PlaceAutocompleteFragment)
                getActivity().getFragmentManager().findFragmentById(R.id.place_autocomplete_fragment);
        autocompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener() {
            @Override
            public void onPlaceSelected(Place place) {
                Location location = new Location("");
                location.setLatitude(place.getLatLng().latitude);
                location.setLongitude(place.getLatLng().longitude);

                setCurrentLocation(location, place.getName().toString(), place.getAddress().toString());
            }

            @Override
            public void onError(Status status) {
                Log.i(TAG, "An error occurred: " + status);
            }
        });

        return layout;
    }

    @Override
    public void onStart()
    {
        super.onStart();
        mapView.onStart();
    }

    @Override
    public void onStop()
    {
        super.onStop();
        mapView.onStop();

        if ( googleApiClient != null && googleApiClient.isConnected())
            googleApiClient.disconnect();
    }

    @Override
    public void onSaveInstanceState(Bundle outState)
    {
        super.onSaveInstanceState(outState);
        mapView.onSaveInstanceState(outState);
    }

    @Override
    public void onResume()
    {
        super.onResume();
        mapView.onResume();

        if ( googleApiClient != null)
            googleApiClient.connect();
    }

    @Override
    public void onPause()
    {
        super.onPause();
        mapView.onPause();

        if ( googleApiClient != null && googleApiClient.isConnected()) {
            LocationServices.FusedLocationApi.removeLocationUpdates(googleApiClient, (com.google.android.gms.location.LocationListener) this);
            googleApiClient.disconnect();
        }
    }

    @Override
    public void onLowMemory()
    {
        super.onLowMemory();
        mapView.onLowMemory();
    }

    @Override
    public void onDestroy()
    {
        super.onDestroy();
        mapView.onLowMemory();

        if ( googleApiClient != null ) {
            googleApiClient.unregisterConnectionCallbacks(this);
            googleApiClient.unregisterConnectionFailedListener(this);

            if ( googleApiClient.isConnected()) {
                LocationServices.FusedLocationApi.removeLocationUpdates(googleApiClient, (com.google.android.gms.location.LocationListener) this);
                googleApiClient.disconnect();
            }
        }
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState)
    {
        super.onActivityCreated(savedInstanceState);

        //액티비티가 처음 생성될 때 실행되는 함수
        MapsInitializer.initialize(getActivity().getApplicationContext());

        if (mapView != null)
        {
            mapView.onCreate(savedInstanceState);
        }
    }

    @Override
    public void onMapReady(GoogleMap googleMap)
    {
//
//        LatLng SEOUL = new LatLng(37.56, 126.97);
//        MarkerOptions markerOptions = new MarkerOptions();
//        markerOptions.position(SEOUL);
//        markerOptions.title("서울");
//        markerOptions.snippet("수도");
//        googleMap.addMarker(markerOptions);
//        googleMap.moveCamera(CameraUpdateFactory.newLatLng(SEOUL));
//        googleMap.animateCamera(CameraUpdateFactory.zoomTo(13));


        // OnMapReadyCallback implements 해야 mapView.getMapAsync(this); 사용가능. this 가 OnMapReadyCallback

        this.googleMap = googleMap;

        //런타임 퍼미션 요청 대화상자나 GPS 활성 요청 대화상자 보이기전에 지도의 초기위치를 서울로 이동
        setCurrentLocation(null, "위치정보 가져올 수 없음", "위치 퍼미션과 GPS 활성 여부 확인");

        //나침반이 나타나도록 설정
        googleMap.getUiSettings().setCompassEnabled(true);
        // 매끄럽게 이동함
        googleMap.animateCamera(CameraUpdateFactory.zoomTo(15));

        //  API 23 이상이면 런타임 퍼미션 처리 필요
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            // 사용권한체크
            int hasFineLocationPermission = ContextCompat.checkSelfPermission(getActivity(), android.Manifest.permission.ACCESS_FINE_LOCATION);

            if ( hasFineLocationPermission == PackageManager.PERMISSION_DENIED) {
                //사용권한이 없을경우
                //권한 재요청
                ActivityCompat.requestPermissions(getActivity(), new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION}, PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION);
            } else {
                //사용권한이 있는경우
                if ( googleApiClient == null) {
                    buildGoogleApiClient();
                }

                if ( ActivityCompat.checkSelfPermission(getActivity(), android.Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED)
                {
                    googleMap.setMyLocationEnabled(true);
                }
            }
        } else {

            if ( googleApiClient == null) {
                buildGoogleApiClient();
            }

            googleMap.setMyLocationEnabled(true);
        }


    }

    private void buildGoogleApiClient()
    {
        googleApiClient = new GoogleApiClient.Builder(getActivity())
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .addApi(Places.GEO_DATA_API)
                .addApi(Places.PLACE_DETECTION_API)
                .enableAutoManage(getActivity(), this)
                .build();
        googleApiClient.connect();
    }

    public boolean checkLocationServicesStatus() {
        LocationManager locationManager = (LocationManager) getActivity().getSystemService(Context.LOCATION_SERVICE);

        return locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) ||
                locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
    }
    @Override
    public void onLocationChanged(Location location)
    {
        Log.i(TAG, "onLocationChanged call..");
        searchCurrentPlaces();
    }

    private void searchCurrentPlaces()
    {

        @SuppressWarnings("MissingPermission") PendingResult<PlaceLikelihoodBuffer> result = Places.PlaceDetectionApi
                .getCurrentPlace(googleApiClient, null);
        result.setResultCallback(new ResultCallback<PlaceLikelihoodBuffer>(){

            @Override
            public void onResult(@NonNull PlaceLikelihoodBuffer placeLikelihoods) {
                int i = 0;
                LikelyPlaceNames = new String[MAXENTRIES];
                LikelyAddresses = new String[MAXENTRIES];
                LikelyAttributions = new String[MAXENTRIES];
                LikelyLatLngs = new LatLng[MAXENTRIES];

                for(PlaceLikelihood placeLikelihood : placeLikelihoods) {
                    LikelyPlaceNames[i] = (String) placeLikelihood.getPlace().getName();
                    LikelyAddresses[i] = (String) placeLikelihood.getPlace().getAddress();
                    LikelyAttributions[i] = (String) placeLikelihood.getPlace().getAttributions();
                    LikelyLatLngs[i] = placeLikelihood.getPlace().getLatLng();

                    i++;
                    if(i > MAXENTRIES - 1 ) {
                        break;
                    }
                }

                placeLikelihoods.release();

                Location location = new Location("");
                location.setLatitude(LikelyLatLngs[0].latitude);
                location.setLongitude(LikelyLatLngs[0].longitude);

                setCurrentLocation(location, LikelyPlaceNames[0], LikelyAddresses[0]);
            }
        });

    }

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

    }

    @Override
    public void onProviderEnabled(String provider)
    {

    }

    @Override
    public void onProviderDisabled(String provider)
    {

    }

    @Override
    public void onConnected(@Nullable Bundle bundle)
    {

        if ( !checkLocationServicesStatus()) {
            AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
            builder.setTitle("위치 서비스 비활성화");
            builder.setMessage("앱을 사용하기 위해서는 위치 서비스가 필요합니다.\n" +
                    "위치 설정을 수정하십시오.");
            builder.setCancelable(true);
            builder.setPositiveButton("설정", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialogInterface, int i) {
                    Intent callGPSSettingIntent =
                            new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                    startActivityForResult(callGPSSettingIntent, GPS_ENABLE_REQUEST_CODE);
                }
            });
            builder.setNegativeButton("취소", new DialogInterface.OnClickListener(){
                @Override
                public void onClick(DialogInterface dialogInterface, int i) {
                    dialogInterface.cancel();
                }
            });
            builder.create().show();
        }

        LocationRequest locationRequest = new LocationRequest();
        locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        locationRequest.setInterval(UPDATE_INTERVAL_MS);
        locationRequest.setFastestInterval(FASTEST_UPDATE_INTERVAL_MS);

        if ( Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if ( ActivityCompat.checkSelfPermission(getActivity(),
                    android.Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {

                LocationServices.FusedLocationApi
                        .requestLocationUpdates(googleApiClient, locationRequest, (com.google.android.gms.location.LocationListener) this);
            }
        } else {
            LocationServices.FusedLocationApi
                    .requestLocationUpdates(googleApiClient, locationRequest, (com.google.android.gms.location.LocationListener) this);

            this.googleMap.getUiSettings().setCompassEnabled(true);
            this.googleMap.animateCamera(CameraUpdateFactory.zoomTo(15));
        }

    }

    @Override
    public void onConnectionSuspended(int i)
    {
        if ( i ==  CAUSE_NETWORK_LOST )
            Log.e(TAG, "onConnectionSuspended(): Google Play services " +
                    "connection lost.  Cause: network lost.");
        else if (i == CAUSE_SERVICE_DISCONNECTED )
            Log.e(TAG,"onConnectionSuspended():  Google Play services " +
                    "connection lost.  Cause: service disconnected");

    }

    @Override
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult)
    {
        Location location = new Location("");
        location.setLatitude(DEFAULT_LOCATION.latitude);
        location.setLongitude((DEFAULT_LOCATION.longitude));

        setCurrentLocation(location, "위치정보 가져올 수 없음",
                "위치 퍼미션과 GPS활성 여부 확인");
    }
}