package com.rubenvandeven.emotionhero;

import android.app.Application;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.PowerManager;

/**
 * For kioskmode only!
 * See http://www.andreas-schrade.de/2015/02/16/android-tutorial-how-to-create-a-kiosk-mode-in-android/
 */
public class AppContext extends Application {
    private AppContext instance;
    private PowerManager.WakeLock wakeLock;
    private OnScreenOffReceiver onScreenOffReceiver;


    @Override
    public void onCreate() {
        super.onCreate();
        instance = this;
        registerKioskModeScreenOffReceiver();
        startKioskService();
    }

    private void registerKioskModeScreenOffReceiver() {
        // register screen off receiver
        final IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_OFF);
        onScreenOffReceiver = new OnScreenOffReceiver();
        registerReceiver(onScreenOffReceiver, filter);
    }

    public PowerManager.WakeLock getWakeLock() {
        if(wakeLock == null) {
            // lazy loading: first call, create wakeLock via PowerManager.
            PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
            wakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, "wakeup");
        }
        return wakeLock;
    }

    private void startKioskService() {
        startService(new Intent(this, KioskService.class));
    }
}