package com.example.nemophila;

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

import android.annotation.SuppressLint;
import android.net.Uri;
import android.os.Bundle;
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.widget.Toast;
import android.Manifest;

import android.os.Bundle;

public class GpsActivity extends AppCompatActivity implements LocationListener {

    LocationManager locationManager;

    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();
                }
            });

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_gps);

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

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

    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
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
                1000, 50, this);

    }


    @SuppressLint("QueryPermissionsNeeded")
    private void moveToGMap(Location location){
        String str1 = String.valueOf(location.getLatitude());
        String str2 = String.valueOf(location.getLongitude());

        Uri uri = Uri.parse("geo:"+str1+","+str2+"?z=16");

        Intent intent = new Intent(Intent.ACTION_VIEW, uri);
        startActivity(intent);
        if (intent.resolveActivity(getPackageManager()) != null) {
            startActivity(intent);
        }
    }

    @Override
    public void onLocationChanged(Location location) {
        // 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);
    }

    @Override
    public void onProviderEnabled(String provider) {

    }

    @Override
    public void onProviderDisabled(String provider) {

    }

}