package com.rubenvandeven.emotionhero;

import android.Manifest;
import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.content.pm.PackageManager;
import android.media.AudioAttributes;
import android.media.AudioManager;
import android.media.SoundPool;
import android.os.Build;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.MotionEvent;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.affectiva.android.affdex.sdk.Frame;
import com.affectiva.android.affdex.sdk.detector.CameraDetector;
import com.affectiva.android.affdex.sdk.detector.Detector;
import com.affectiva.android.affdex.sdk.detector.Face;

import java.util.HashMap;
import java.util.List;

/**
 * An example full-screen activity that shows and hides the system UI (i.e.
 * status bar and navigation/system bar) with user interaction.
 */
public class GamingActivity extends AppCompatActivity implements Detector.ImageListener,  CameraDetector.CameraEventListener, Detector.FaceListener {

    final static String LOG_TAG = "EmotionHero";

    final int PERMISSIONS_REQUEST_CAMERA = 1;

    private TextView mContentView;

    private CameraDetector detector;

    SurfaceView cameraPreview;

    int previewWidth = 0;
    int previewHeight = 0;

    Scenario currentScenario;
    ScenarioView scenarioView;

    boolean has_camera_permission = false;

    Button restartButton;

    public SoundPool sound;
    public HashMap<Integer, Integer> soundIds = new HashMap<>();

    final static int SOUND_SCORE = 1;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
        getSupportActionBar().hide();

        setContentView(R.layout.activity_gaming);

        mContentView = (TextView) findViewById(R.id.fullscreen_content);
        RelativeLayout videoLayout = (RelativeLayout) findViewById(R.id.video_layout);

        restartButton = (Button) findViewById(R.id.restartButton);
        restartButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                finish();
                startActivity(getIntent());
            }
        });


        // Set up the user interaction to manually show or hide the system UI.
        mContentView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
//                toggle();
            }
        });


        //We create a custom SurfaceView that resizes itself to match the aspect ratio of the incoming camera frames
        cameraPreview = new SurfaceView(this) {
            @Override
            public void onMeasure(int widthSpec, int heightSpec) {
                int measureWidth = MeasureSpec.getSize(widthSpec);
                int measureHeight = MeasureSpec.getSize(heightSpec);
                int width;
                int height;
                if (previewHeight == 0 || previewWidth == 0) {
                    width = measureWidth;
                    height = measureHeight;
                } else {
                    float viewAspectRatio = (float)measureWidth/measureHeight;
                    float cameraPreviewAspectRatio = (float) previewWidth/previewHeight;

                    if (cameraPreviewAspectRatio > viewAspectRatio) {
                        width = measureWidth;
                        height =(int) (measureWidth / cameraPreviewAspectRatio);
                    } else {
                        width = (int) (measureHeight * cameraPreviewAspectRatio);
                        height = measureHeight;
                    }
                }
                setMeasuredDimension(width,height);
//                setMeasuredDimension(1,1); // this DOES increase performance....
            }
        };
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
//        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(1,1);
        params.addRule(RelativeLayout.CENTER_IN_PARENT,RelativeLayout.TRUE);
        cameraPreview.setLayoutParams(params);
        videoLayout.addView(cameraPreview,0);


        currentScenario = new ScenarioAnger(this);

        scenarioView = new ScenarioView(this, currentScenario);
        RelativeLayout.LayoutParams scenarioViewParams = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        videoLayout.addView(scenarioView, 1, scenarioViewParams);

        createSoundPool(); // instantiate SoundPool in sound
        soundIds.put(SOUND_SCORE, sound.load(this, R.raw.score2, 1));

    }

    @Override
    protected void onResume() {
        super.onResume();
        startDetector();

    }

    @Override
    protected void onPause() {
        super.onPause();
        stopDetector();
    }

    void startDetector() {
        if (detector == null || !detector.isRunning()) {
            // check permission
            String permission = "android.permission.CAMERA";
            int res = getApplicationContext().checkCallingOrSelfPermission(permission);
            if (res == PackageManager.PERMISSION_GRANTED) {
                Log.e(LOG_TAG, "HAS PERM");
                has_camera_permission = true;
            } else {
                Log.e(LOG_TAG, "NO PERM");
                ActivityCompat.requestPermissions(this,
                        new String[]{Manifest.permission.CAMERA},
                        PERMISSIONS_REQUEST_CAMERA);
            }

            if(has_camera_permission)
            {
                if(detector == null)
                {
//                    SurfaceView surfaceView = (SurfaceView) findViewById(R.id.surfaceView);

                    detector = new CameraDetector(this, CameraDetector.CameraType.CAMERA_FRONT, cameraPreview, 1, Detector.FaceDetectorMode.LARGE_FACES);
                    detector.setLicensePath("emotionhero_dev.license");

                    detector.setMaxProcessRate(10);
                    detector.setDetectAllEmotions(true);
                    detector.setDetectAllAppearances(false);
                    detector.setDetectAllEmojis(false);
                    detector.setDetectAllExpressions(false);
                    detector.setMaxProcessRate(20);

                    detector.setImageListener(this);
                    detector.setOnCameraEventListener(this);
                    detector.setFaceListener(this);
                }

                detector.start();
                setText("STARTING...");
                Log.d(LOG_TAG, Boolean.toString(detector.isRunning()));
            }
        }
    }

    void stopDetector() {
        if (detector != null && detector.isRunning()) {
            detector.stop();
        }
    }

    @Override
    /**
     * Detector callback gives the faces found so we can match their scores to the given scenario.
     */
    public void onImageResults(List<Face> list, Frame frame, float timestamp) {
//        frame.getOriginalBitmapFrame()
//        Log.e(LOG_TAG, "RESULT! faces: " + Integer.toString(list.size()) + " t: " + Float.toString(timestamp) + "s" );
//        if(!currentScenario.isWithinTime(timestamp))
        if(currentScenario.isFinished())
        {
            setText(String.format("LEVEL ENDED\nScore: %.2f", currentScenario.getTotalScore()));
            stopDetector();
            restartButton.setVisibility(View.VISIBLE);
            return;
        }
        if (list == null)
            return;
        if (list.size() == 0) {
//            mContentView.setText("NO FACE FOUND"); // this happens in onFaceDetectionStopped
        } else {
            hideText(); // hide textView as we want as few elements as possible.
            Face face = list.get(0);
            currentScenario.setCurrentAttributeScoresForFace(face);
            scenarioView.setCurrentAttributeScoresForFace(face);

//            String paramString = "";
//            paramString += "Anger    " + String.format("%02.2f", face.emotions.getAnger()) + "%\n";
//            paramString += "Contempt " + String.format("%02.2f", face.emotions.getContempt()) + "%\n";
//            paramString += "Disgust  " + String.format("%02.2f", face.emotions.getDisgust()) + "%\n";
//            paramString += "Fear     " + String.format("%02.2f", face.emotions.getFear()) + "%\n";
//            paramString += "Joy      " + String.format("%02.2f", face.emotions.getJoy()) + "%\n";
//            paramString += "Sadness  " + String.format("%02.2f", face.emotions.getSadness()) + "%\n";
//            paramString += "Surprise " + String.format("%02.2f", face.emotions.getSurprise()) + "%\n";
//
//            paramText.setText(paramString);
        }
    }

    @Override
    /**
     * For CameraDetector.CameraEventListener
     * Used to scale video preview output
     */
    public void onCameraSizeSelected(int width, int height, Frame.ROTATE rotate) {
        if (rotate == Frame.ROTATE.BY_90_CCW || rotate == Frame.ROTATE.BY_90_CW) {
            previewWidth = height;
            previewHeight = width;
        } else {
            previewHeight = height;
            previewWidth = width;
        }
        cameraPreview.requestLayout();
    }

    @Override
    public void onRequestPermissionsResult(int requestCode,
                                           String permissions[], int[] grantResults) {
        switch (requestCode) {
            case PERMISSIONS_REQUEST_CAMERA: {
                // If request is cancelled, the result arrays are empty.
                if (grantResults.length > 0
                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    has_camera_permission = true;
                    startDetector();
                } else {
                    has_camera_permission = false;
                    Toast errorMsg = Toast.makeText(this, R.string.camera_required, Toast.LENGTH_LONG);
                    errorMsg.show();
                }
                return;
            }

            // other 'case' lines to check for other
            // permissions this app might request
        }
    }

    @Override
    public void onFaceDetectionStarted()
    {
        setText("START!");
        currentScenario.start();
    }

    @Override
    public void onFaceDetectionStopped()
    {
        setText("No face found...");
        currentScenario.pause();
    }

    public void setText(String text)
    {
        mContentView.setVisibility(View.VISIBLE);
        mContentView.setText(text);
    }

    public void hideText()
    {
        mContentView.setVisibility(View.GONE);
    }


//    http://stackoverflow.com/a/27552576
    protected void createSoundPool() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            createNewSoundPool();
        } else {
            createOldSoundPool();
        }
    }

//    http://stackoverflow.com/a/27552576
    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    protected void createNewSoundPool(){
        AudioAttributes attributes = new AudioAttributes.Builder()
                .setUsage(AudioAttributes.USAGE_GAME)
                .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
                .build();
        sound = new SoundPool.Builder()
                .setAudioAttributes(attributes)
                .build();
    }

//    http://stackoverflow.com/a/27552576
    @SuppressWarnings("deprecation")
    protected void createOldSoundPool(){
        sound = new SoundPool(5, AudioManager.STREAM_MUSIC,0);
    }
}