package com.mustafa.shakir.swipegyro;

import java.io.DataOutputStream;
import java.io.IOException;

import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.IBinder;
import android.os.Vibrator;
import android.support.annotation.Nullable;
import android.util.Log;

public class GyroService extends Service implements SensorEventListener {
    Process m_process = null;
    DataOutputStream m_dataOut = null;

    public final String TAG = GyroService.class.getSimpleName();
    private SensorManager sensorManager;
    private Sensor sensor;
    private long lastUpdate = 0;
    private float lastX,lastY,lastZ;
    private static final int SHAKE_THRESHOLD = 600;
    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onSensorChanged(SensorEvent sensorEvent) {
        if (sensorEvent.sensor.getType() == sensor.TYPE_ACCELEROMETER) {
            float x = sensorEvent.values[0];
            float y = sensorEvent.values[1];
            float z = sensorEvent.values[2];
            long curTime = System.currentTimeMillis();

            if ((curTime - lastUpdate) > 100) {

                long diffTime = (curTime - lastUpdate);
                lastUpdate = curTime;
                float speed = Math.abs(x + y + z - lastX - lastY - lastZ) / diffTime * 10000;
                if (speed > SHAKE_THRESHOLD) {
                    Vibrator vib = (Vibrator) getSystemService(VIBRATOR_SERVICE);
                    vib.vibrate(200);
                    drag(250,300,-800,300,100);

                }
                lastX = x;
                lastY = y;
                lastZ = z;
            }
        }
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int i) {

    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        askForRoot();
        sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        sensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        sensorManager.registerListener(this,sensor,SensorManager.SENSOR_DELAY_NORMAL);
        return START_STICKY;
    }
    private void drag(float fromX, float toX, float fromY, float toY, int stepCount){
        runSwipeCommand((int)fromX, (int)toX, (int)fromY, (int)toY, stepCount);
    }

    private void askForRoot(){
        try{
            m_process = Runtime.getRuntime().exec("su");
            m_dataOut = new DataOutputStream(m_process.getOutputStream());
        } catch (Exception e) {e.printStackTrace();}
    }
    private void runSwipeCommand(final int fromX, final int toX, final int fromY, final int toY, final int duration){
        Thread t1 = new Thread(new Runnable(){
            public void run(){
                try {
                    if(m_process != null && m_dataOut != null){
                        String cmd = "/system/bin/input swipe "+fromX+" "+fromY+" "+toX+" "+toY+" "+ duration+"n";
                        m_dataOut.writeBytes(cmd);
                        Log.e(TAG, "Command executed: " + cmd);
                    }
                } catch (IOException e) { e.printStackTrace();}
            }
        });
        t1.start();
    }
}