package com.example.nemophila;

import androidx.core.content.res.ResourcesCompat;
import androidx.fragment.app.FragmentActivity;

import androidx.activity.result.ActivityResultLauncher;
import androidx.activity.result.contract.ActivityResultContracts;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Point;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.widget.Toast;
import android.annotation.SuppressLint;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.widget.TextView;
import android.content.Intent;
import android.provider.Settings;
import android.util.Log;
import android.Manifest;

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.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptor;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.GroundOverlay;
import com.google.android.gms.maps.model.GroundOverlayOptions;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.LatLngBounds;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import com.example.nemophila.databinding.ActivityMainBinding;
import com.google.firebase.firestore.GeoPoint;

import java.util.Map;

public class MainActivity extends FragmentActivity implements OnMapReadyCallback,LocationListener  {

    private GoogleMap mMap;
    private ActivityMainBinding binding;
    private LatLng latlng;
    private LatLng latlng2;


    MapView mapV = null;
    //MapController mc = null;
    private GroundOverlay current_overlay;
    LocationManager locationManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //現在地アイコンの取得
        //Drawable ic_current = ResourcesCompat.getDrawable(getResources(),R.drawable.ic_current_location,null);

        binding = ActivityMainBinding.inflate(getLayoutInflater());
        setContentView(binding.getRoot());

        if (ActivityCompat.checkSelfPermission(this,
                Manifest.permission.ACCESS_FINE_LOCATION)
                != PackageManager.PERMISSION_GRANTED) {

            requestPermissionLauncher.launch(
                    Manifest.permission.ACCESS_FINE_LOCATION);
        }
        else{
            locationStart();
        }

        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        assert mapFragment != null;
        mapFragment.getMapAsync(this);


    }

    @Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;

        //研究室周辺の緯度経度
        double latitude = 34.7308032;
        double longitude = 135.2630272;

        //テスト用
        latlng = new LatLng(latitude, longitude);
        latlng2 = new LatLng(34.74, 135.26);

        //標準のマーカー(店用のピン)
        setMarker(latitude, longitude);

        //アイコン画像をマーカーに設定
        //画像関連がわかっていないのでパス
        //setIcon(latitude, longitude);

        // camera 移動 (初期画面)
        //mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latlng, 15));

        /*
        //多分使わない
        // タップした時のリスナーをセット
        mMap.setOnMapClickListener(tapLocation -> {
            // map(ピン以外)をtapされた位置の緯度経度
            latlng = new LatLng(tapLocation.latitude, tapLocation.longitude);
            String str = String.format(Locale.US, "%f, %f", tapLocation.latitude, tapLocation.longitude);
            mMap.addMarker(new MarkerOptions().position(location).title(str));
            mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latlng, 18));
        });
         */

        //長押し時にその座標にピンを立てる
        //長押し時にその座標を保存し、投稿画面に移り、投稿完了時にはピンを立てる
        mMap.setOnMapLongClickListener(longpushLocation -> {
            //長押しされた位置の緯度経度を取得
            LatLng newlocation = new LatLng(longpushLocation.latitude, longpushLocation.longitude);

            //投稿処理


            //投稿が完了した場合
            //ピンをその座標に立て、緯度経度をタイトルに設定
            //タイトルはnullにする予定
            //↓返り値でMarkerを返すので、Nemophilaに渡す予定
            mMap.addMarker(new MarkerOptions().position(newlocation).title(""+longpushLocation.latitude+" :"+ longpushLocation.longitude));
            //ピンを立てた位置にカメラを移動
            mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(newlocation, 18));
        });

        // ピンをクリックした場合
        mMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
            @Override
            public boolean onMarkerClick(Marker marker) {
                //店の詳細と投稿一覧を表示
                //ここでshopActivityを呼び出す

                //下からクリックしたことを通知
                Toast.makeText(MainActivity.this, "ピンクリック", Toast.LENGTH_SHORT).show();
                return false;
            }
        });

    }

    //ピンの初期設定。完成時不要
    private void setMarker(double latitude, double longitude){
        MarkerOptions markerOptions = new MarkerOptions();
        MarkerOptions markerOptions2 = new MarkerOptions();

        markerOptions.position(latlng);
        markerOptions.title("ntlab");
        mMap.addMarker(markerOptions);

        //テスト用
        markerOptions2.position(latlng2);
        markerOptions2.title(null);
        mMap.addMarker(markerOptions2);

        // ズーム
        zoomMap(latitude, longitude);

    }

    private void zoomMap(double latitude, double longitude){
        // 表示する東西南北の緯度経度を設定
        double south = latitude * (1-0.00005);
        double west = longitude * (1-0.00005);
        double north = latitude * (1+0.00005);
        double east = longitude * (1+0.00005);

        // LatLngBounds (LatLng southwest, LatLng northeast)
        //左下、右上
        LatLngBounds bounds = LatLngBounds.builder()
                .include(new LatLng(south , west))
                .include(new LatLng(north, east))
                .build();

        int width = getResources().getDisplayMetrics().widthPixels;
        int height = getResources().getDisplayMetrics().heightPixels;

        // static CameraUpdate.newLatLngBounds(LatLngBounds bounds, int width, int height, int padding)
        mMap.moveCamera(CameraUpdateFactory.
                newLatLngBounds(bounds, width, height, 0));

        //ズーム処理
        mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latlng, 15f));
    }

    private void setIcon(double latitude, double longitude){
        //Drawable ic_current = ResourcesCompat.getDrawable(getResources(),R.drawable.icon_current,null);
        //更新前の現在地アイコンを消去
        if(current_overlay != null) {
            current_overlay.remove();
        }

        LatLng current_location = new LatLng(latitude,longitude);

        // マップに貼り付ける BitmapDescriptor生成
        BitmapDescriptor descriptor = BitmapDescriptorFactory.fromResource(R.drawable.icon_current);
        //Drawable ic_current = ResourcesCompat.getDrawable(getResources(),R.drawable.ic_current_location,null);

        // 貼り付設定
        GroundOverlayOptions overlayOptions = new GroundOverlayOptions();
        overlayOptions.image(descriptor);

        //public GroundOverlayOptions anchor (float u, float v)
        // (0,0):top-left, (0,1):bottom-left, (1,0):top-right, (1,1):bottom-right
        overlayOptions.anchor(0.5f, 0.5f);

        // 張り付け画像の大きさ メートル単位
        // public GroundOverlayOptions	position(LatLng location, float width, float height)
        overlayOptions.position(current_location, 200f, 200f);

        // マップに貼り付け・アルファを設定
        current_overlay = mMap.addGroundOverlay(overlayOptions);

        // カメラを移動
        zoomMap(latitude, longitude);

        // 透明度
        assert current_overlay != null;
        current_overlay.setTransparency(0.8F);
    }


    private final ActivityResultLauncher<String>
            requestPermissionLauncher = registerForActivityResult(
            new ActivityResultContracts.RequestPermission(),
            isGranted -> {
                if (isGranted) {
                    locationStart();
                }
                else {
                    Toast toast = Toast.makeText(this,
                            "これ以上なにもできません", Toast.LENGTH_SHORT);
                    toast.show();
                }
            });

    //現在地の取得
    @SuppressLint("MissingPermission")
    private void locationStart(){
        Log.d("debug","locationStart()");

        // LocationManager インスタンス生成
        locationManager =
                (LocationManager) getSystemService(LOCATION_SERVICE);

        if (locationManager != null && locationManager.isProviderEnabled(
                LocationManager.GPS_PROVIDER)) {

            Log.d("debug", "location manager Enabled");
        } else {
            // GPSを設定するように促す
            Intent settingsIntent =
                    new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
            startActivity(settingsIntent);
            Log.d("debug", "not gpsEnable, startActivity");
        }

        if (ContextCompat.checkSelfPermission(this,
                Manifest.permission.ACCESS_FINE_LOCATION) !=
                PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this,
                    new String[]{Manifest.permission.ACCESS_FINE_LOCATION,}, 1000);

            Log.d("debug", "checkSelfPermission false");
            return;
        }

        //解決しているはずの問題にエラーが起きています
        //実行はできます
        //勝手に治りました
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
                1000, 50, this);

    }

    @Override
    public void onLocationChanged(Location location) {
        //現在地が変更されるたびに現在地アイコンを移動
        //LatLng型で一応受け取っておく
        latlng = new LatLng(location.getLatitude(), location.getLongitude());

        /*
        テスト用。現在座標を画面に表示
         */
        // 緯度の表示
        TextView textView1 = findViewById(R.id.text_view1);
        String str1 = "Latitude:"+location.getLatitude();
        textView1.setText(str1);

        // 経度の表示
        TextView textView2 = findViewById(R.id.text_view2);
        String str2 = "Longitude:"+location.getLongitude();
        textView2.setText(str2);

        //現在地アイコンを表示.このsetIcon内にzoomMap処理もあるので注意
        setIcon(location.getLatitude(),location.getLongitude());
    }

    @Override
    public void onProviderEnabled(String provider) {

    }

    @Override
    public void onProviderDisabled(String provider) {

    }
}