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 com.google.android.gms.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;

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

    private Location lastLocation;
    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 = 5000;
    private static final int FASTEST_UPDATE_INTERVAL_MS = 5000;

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

    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, 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, this);
                googleApiClient.disconnect();
            }
        }
    }

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

        Log.i(TAG, "An error occurred: onActivityCreated");
        //액티비티가 처음 생성될 때 실행되는 함수
        MapsInitializer.initialize(getActivity().getApplicationContext());

        if (mapView != null)
        {
            mapView.onCreate(savedInstanceState);
        }
        Log.i(TAG, "An error occurred: EndonActivityCreated");
    }

    @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

        Log.i(TAG, "An error occurred: onMapReady");
        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);
        }

        Log.i(TAG, "An error occurred: ENDonMapReady");

    }

    private void buildGoogleApiClient()
    {
        Log.i(TAG, "An error occurred: 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();
        Log.i(TAG, "An error occurred: ENDbuildGoogleApiClient");
    }

    public boolean checkLocationServicesStatus()
    {
        Log.i(TAG, "An error occurred: checkLocationServicesStatus");

        LocationManager locationManager = (LocationManager) getActivity().getSystemService(Context.LOCATION_SERVICE);

        Log.i(TAG, "An error occurred: ENDcheckLocationServicesStatus");
        return locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) || locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
    }

    @Override
    public void onLocationChanged(Location location)
    {
        Log.i(TAG, "onLocationChanged call..");
        lastLocation = location;
        if (currentMarker != null)
        {
            currentMarker.remove();
        }
        LatLng mlanglang = new LatLng(location.getLatitude(), location.getLongitude());
        MarkerOptions markerOptions = new MarkerOptions();
        markerOptions.position(mlanglang);
        markerOptions.title("Current Location");
        markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));

        currentMarker = googleMap.addMarker(markerOptions);
        googleMap.moveCamera(CameraUpdateFactory.newLatLng(mlanglang));
        googleMap.animateCamera(CameraUpdateFactory.zoomBy(10));
        googleMap.animateCamera(CameraUpdateFactory.zoomTo((17.0f)));
    }

    @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, this);
                this.googleMap.getUiSettings().setCompassEnabled(true);
                this.googleMap.animateCamera(CameraUpdateFactory.zoomTo(15));
            }
        }
        else
        {
            LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, 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)
    {

        Log.i(TAG, "An error occurred: onConnectionFailed");
        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");
        Log.i(TAG, "An error occurred: ENDonConnectionFailed");
    }
}