child_guard/app/src/main/java/com/example/childguard/MainActivity.java

package com.example.childguard;

import android.annotation.SuppressLint;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.Vibrator;
import android.preference.PreferenceManager;
import android.util.Log;
import android.widget.FrameLayout;
import android.widget.Toast;

import androidx.activity.result.ActivityResultLauncher;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.browser.customtabs.CustomTabsIntent;
import androidx.core.app.ActivityCompat;
import androidx.core.app.NotificationCompat;
import androidx.core.app.NotificationManagerCompat;
import androidx.fragment.app.Fragment;

import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.material.bottomnavigation.BottomNavigationView;
import com.google.firebase.firestore.DocumentReference;
import com.google.firebase.firestore.DocumentSnapshot;
import com.google.firebase.firestore.EventListener;
import com.google.firebase.firestore.FirebaseFirestore;
import com.google.firebase.firestore.FirebaseFirestoreException;
import com.journeyapps.barcodescanner.ScanContract;
import com.journeyapps.barcodescanner.ScanOptions;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.Future;

public class MainActivity extends AppCompatActivity {

    FirebaseFirestore db;
    BluetoothManager bluetoothManager;
    BluetoothAdapter bluetoothAdapter;

    DocumentReference mDocRef;

    private HomeFragment homeFragment;

    public static final String TAG = "InspirationQuote";




    private final ActivityResultLauncher<ScanOptions> QrLauncher = registerForActivityResult(
            new ScanContract(),
            result -> {
                String contents = result.getContents();
                if (contents == null) {
                    Toast.makeText(this, "QRコードが読み取れませんでした", Toast.LENGTH_LONG).show();
                } else {
                    if (!contents.contains("https://practicefirestore1-8808c.web.app/")) {
                        Toast.makeText(this, "Chiled Guardに対応するQRコードではありません", Toast.LENGTH_LONG).show();
                    } else {
                        //URLの表示
                        Toast.makeText(this, contents, Toast.LENGTH_SHORT).show();
                        //ブラウザを起動し、URL先のサイトを開く
                        CustomTabsIntent.Builder builder = new CustomTabsIntent.Builder();
                        CustomTabsIntent customTabsIntent = builder.build();
                        customTabsIntent.launchUrl(this, Uri.parse(contents));
                    }
                }
            }
    );

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        db = FirebaseFirestore.getInstance();//Firebaseとの紐づけ

        BottomNavigationView bottomNavigationView = findViewById(R.id.nav_view);

        this.homeFragment = HomeFragment.newInstance("test", "tset");

        bottomNavigationView.setOnNavigationItemSelectedListener(v ->

        {
            if (v.getItemId() == findViewById(R.id.navigation_home).getId()) {
                findViewById(R.id.fab_scan_qr_code).setVisibility(FrameLayout.VISIBLE);
                getSupportFragmentManager().beginTransaction()
                        .replace(findViewById(R.id.fragmentContainerView).getId(), this.homeFragment)
                        .addToBackStack(null)
                        .commit();
            } else if (v.getItemId() == findViewById(R.id.navigation_notification).getId()) {
                findViewById(R.id.fab_scan_qr_code).setVisibility(FrameLayout.VISIBLE);
                getSupportFragmentManager().beginTransaction()
                        .replace(findViewById(R.id.fragmentContainerView).getId(), NotificationFragment.newInstance("test", "test"))
                        .addToBackStack(null)
                        .commit();
            } else if (v.getItemId() == findViewById(R.id.navigation_settings).getId()) {
                findViewById(R.id.fab_scan_qr_code).setVisibility(FrameLayout.GONE);
                getSupportFragmentManager().beginTransaction()
                        .replace(findViewById(R.id.fragmentContainerView).getId(), SettingFragment.newInstance())
                        .addToBackStack(null)
                        .commit();
            }
            return true;
        });

        findViewById(R.id.fab_scan_qr_code).setOnClickListener(v -> {
            Log.d("MainActivity/Fab", "onClick: called");
            //QRリーダ起動
            ScanOptions options = new ScanOptions();
            options.setPrompt("QRコードを読み取ってください");
            QrLauncher.launch(options);
        });

        //Bluetooth検知機能
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(BluetoothDevice.ACTION_ACL_CONNECTED);
        intentFilter.addAction(BluetoothDevice.ACTION_ACL_DISCONNECTED);

        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
            Log.d("BT", "No permission to connect bluetooth devices");
            return;
        }
        else {
            Log.d("BT", "Permission to connect bluetooth devices granted");
        }
        registerReceiver(receiver, intentFilter);

    }

    @Override
    protected void onResume() {
        super.onResume();
        Log.d("onResume", "called");
        Log.d("onResume", "mDocRef is null");
        SharedPreferences sharedPreferences = getSharedPreferences("app_situation", MODE_PRIVATE);
        String IdPref = sharedPreferences.getString("ID", null);
        if (IdPref == null) {
            Log.d("onResume", "ID not initialized.");
        } else {
            mDocRef = FirebaseFirestore.getInstance().document("status/" + IdPref);//現在の位置を取得
            initNotification(mDocRef);
        }
    }

    private void initNotification(DocumentReference mDocRef) {
        // Init pref
        SharedPreferences sharedPreferences = getSharedPreferences("app_situation",MODE_PRIVATE);

        mDocRef.addSnapshotListener(this, new EventListener<DocumentSnapshot>() {
            @Override
            public void onEvent(@Nullable DocumentSnapshot documentSnapshot, @Nullable FirebaseFirestoreException e) {

                Log.d("nt", "イベント開始");
                //共有プリファレンス 書き込みの準備
                SharedPreferences.Editor E = sharedPreferences.edit();
                //車の乗り降りを管理するtrue=乗車、false=降車
                if (documentSnapshot.exists()) {
                    Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.fragmentContainerView);
                    Boolean isInCar = sharedPreferences.getBoolean("isInCarPref", false);//現在の乗降状態を保存する共有プリファレンス
                    E.putBoolean("isInCarPref", documentSnapshot.getBoolean("isInCar"));//乗降状態の判定
                    E.apply();//確定処理
                    Log.d("nt", "レスポンスを検知しました1");
                    if (documentSnapshot.getBoolean("isReported")==false ) {
                        if (fragment instanceof HomeFragment) {
                            ((HomeFragment) fragment).onEvent(isInCar);
                        }
                    }else if(isInCar){
                        ResetReported();
                        int importance = NotificationManager.IMPORTANCE_DEFAULT;
                        NotificationChannel channel = new NotificationChannel("CHANNEL_ID", "通報通知", importance);
                        channel.setDescription("第3者からの通報を検知しました");
                        NotificationManager notificationManager = getSystemService(NotificationManager.class);
                        notificationManager.createNotificationChannel(channel);
                        Log.d("nt", "レスポンスを検知しました2");
                        notifyMain();
                        } else{
                        ResetReported();
                        Log.d("nt", "何もなし" );
                    }
                    }

                    }

        });

    }


    //Bluetoothの検知機能
    private final BroadcastReceiver receiver = new BroadcastReceiver() {

        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction(); // may need to chain this to a recognizing function
            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
//            HomeFragment homeFragment=new HomeFragment();

            if (ActivityCompat.checkSelfPermission(context, android.Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
                Log.d("BT", "No permission to connect bluetooth devices");
                return;
            }
            String deviceName = device.getName();
            String deviceHardwareAddress = device.getAddress(); // MAC address

            if (BluetoothDevice.ACTION_ACL_CONNECTED.equals(action)) {
                //Do something if connected
                Log.d("BT", "Device connected");

                String registeredId = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()).getString("bluetooth_device_id", "none");

                Log.d("BT_Judge", "Registered: " + registeredId);

                if (deviceHardwareAddress.equals(registeredId)) {
                    Log.d("BT_Judge", "登録済み");
                } else Log.d("BT_Judge", "未登録");

            } else if (BluetoothDevice.ACTION_ACL_DISCONNECTED.equals(action)) {
                //Do something if disconnected
                Log.d("BT", "Device disconnected");

            }
        }
    };

    //↓通知のやつ
    public void notifyMain() {
        //↓通知をする際に起動するバイブレーション
        ((Vibrator) getSystemService(Context.VIBRATOR_SERVICE)).vibrate(1000);
        //↓通知の詳細設定的な奴
        NotificationCompat.Builder builder = new NotificationCompat
                .Builder(this, "CHANNEL_ID")
                .setSmallIcon(android.R.drawable.ic_menu_info_details)
                .setContentTitle("通報検知")
                .setContentText("子供の置き去りを検知しました。")
                .setPriority(NotificationCompat.PRIORITY_DEFAULT);

        NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);

        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return;
        }
        notificationManager.notify(R.string.app_name, builder.build());


    }

    public void ResetReported(){

        SharedPreferences sharedPreferences = MainActivity.this.getSharedPreferences("app_situation", MODE_PRIVATE);
        String IdPref = sharedPreferences.getString("ID", null);
        db = FirebaseFirestore.getInstance();//Firebaseとの紐づけ
        DocumentReference isReported = db.collection("status").document(IdPref);
        Map<String, Boolean> DEFAULT_ITEM = new HashMap<>();//mapの宣言
        DEFAULT_ITEM.put("isReported", false);
        isReported.update("isReported",false).addOnSuccessListener(new OnSuccessListener<Void>() {
            @Override
            public void onSuccess(Void unused) {
                Log.d(TAG, "DocumentSnapshot successfully updated!");
            }
        }).addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception e) {
                Log.w(TAG, "Error updating document", e);
            }
        });
    }
        @Override
    public void onStop() {
        super.onStop();
        Intent intent = new Intent(getApplication(), TestService.class);
        startService(intent);
    }

}