import android.graphics.Color;
import android.nfc.Tag;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.MenuItem;
import android.view.SurfaceView;
import android.hardware.camera2.CameraCaptureSession;
import android.widget.EditText;
import android.widget.TextView;

import org.opencv.android.BaseLoaderCallback;
import org.opencv.android.CameraBridgeViewBase;
import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
import org.opencv.android.JavaCameraView;
import org.opencv.android.LoaderCallbackInterface;
import org.opencv.android.OpenCVLoader;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.core.MatOfKeyPoint;
import org.opencv.core.MatOfPoint;
import org.opencv.imgproc.Imgproc;
import org.opencv.highgui.Highgui;


public class testActivity extends AppCompatActivity implements CvCameraViewListener2 {

    private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
        @Override
    public void onManagerConnected(int status){
            switch (status){
                case LoaderCallbackInterface.SUCCESS:
                {
                    mOpenCvCameraView.enableView();
                    break;
                }
                default:
                {
                    super.onManagerConnected(status);
                }
            }
        }

    };
    private JavaCameraView mOpenCvCameraView;
    Mat grayMat;
    int testAmount;
    int grayVal;
    //EditText lagSquare = (EditText) findViewById(R.id.lagSquare);
    //TextView lagRating = (TextView) findViewById(R.id.lagRating);
    //TextView lagTime = (TextView) findViewById(R.id.lagTime);
    double[] timeArray = new double[500]; // set array
    double rating = 0;
    double lagStartTime;
    double lagEndTime;
    double lagTimeResult;

    public void startTest (View view) {
        //test loop
        for (testAmount = 0; testAmount < 500; testAmount++) {//test loop
            lagStartTime = System.nanoTime(); //start lagTimer start
            //lagSquare.setBackgroundColor(Color.rgb(255, 255, 255));
            //  lopp to test
            while (grayVal <= 100){
                Log.i("Mat Value", String.valueOf(grayVal));
            }
            //lagSquare.setBackgroundColor(Color.rgb(000,000,000)); //set lagSquare black
            lagEndTime = System.nanoTime(); //start lagTimer end
            lagTimeResult = (lagEndTime - lagStartTime);//stop lag timer
            timeArray[testAmount] = lagTimeResult;
        }
        //min scan
    }


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

        mOpenCvCameraView = (JavaCameraView) findViewById(R.id.testVideoView);
        mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE);
        mOpenCvCameraView.setCvCameraViewListener(this);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        //getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        getSupportActionBar().hide();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }



    public void onDestroy() {
        super.onDestroy();
        if (mOpenCvCameraView != null)
            mOpenCvCameraView.disableView();
    }

    public void onResume() {
        super.onResume();
        if (!OpenCVLoader.initDebug()) {
            OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_9, this, mLoaderCallback);
        } else {
            mLoaderCallback.onManagerConnected(LoaderCallbackInterface.SUCCESS);
        }
    }



    @Override
    public void onPause() {
        super.onPause();

        if (mOpenCvCameraView != null)
            mOpenCvCameraView.disableView();
    }

    @Override
    public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
        grayMat = inputFrame.gray();
        double[] grayPixel = grayMat.get(1,1);
        grayVal = (int)grayPixel[0];
        return grayMat;
    }


    @Override
    public void onCameraViewStarted(int width, int height) {

    }
    @Override
    public void onCameraViewStopped() {
        grayMat.release();
    }
}