package com.rubenvandeven.emotionhero;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.support.v8.renderscript.RenderScript;
import android.util.Log;

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

import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;

import io.github.silvaren.easyrs.tools.Nv21Image;

/**
 * Created by ruben on 16/08/16.
 */

public class Scenario {

    public int id;

    public Frame.ByteArrayFrame currentFrame;

    public static final int LVL_NONE = 0;
    public static final int LVL_ANGER = 1;
    public static final int LVL_JOY = 2;
    public static final int LVL_SURPRISE = 3;
    public static final int LVL_SADDNESS= 4;

    // the levels in the right order.
    public static final ArrayList<Integer> SCENARIOS = new ArrayList<Integer>() {{
        add(LVL_JOY);
        add(LVL_ANGER);
        add(LVL_SADDNESS);
        add(LVL_SURPRISE);
    }};

    static int DESIRED_FPS = 25;

    float duration = 0;

    /**
     * Minimum score to be able to pass to the next level.
     * (check minimumScore || minimumAchievements)
     */
    float minimumScore = 0;

    /**
     * Number of achievements required to have, before being able to go to next level
     * (check minimumScore || minimumAchievements)
     */
    float minimumAchievements= 0;

    /**
     * If a game is beign played.
     */
    Game game;

    /**
     * @deprecated
     */
    long startTime = 0;

    /**
     * The timer that provides the tick
     */
    Timer timer;

    /**
     * Increment on each tick
     */
    float runningTime = -1;


    boolean isRunning = false;

    private GamingActivity _activity;

    int maxScore = 0;

    protected RenderScript rs;

    protected Paint squarePaint;

    /**
     * The scorres in this moment, as to draw them on the screen.
     * Indexes are Emotion ordinals
     */
    private Face currentFace;

    ArrayList<Target> targets = new ArrayList<>();

    class Target {
        public int index;
        public Emotion emotion;
        public float value;
        public float timestamp;
        public boolean isHit = false;
    }

    /**
     * Constructor
     */
    public Scenario(int lvl_id, GamingActivity activity)
    {
        // go to first scenario if unexisting is given
        if(!SCENARIOS.contains(lvl_id)) {
            lvl_id = SCENARIOS.get(0);
        }

        this.id = lvl_id;
        _activity = activity;
        createTargets();
    }

    public void init() {

        timer = new Timer("ScenarioTimer");
        TimerTask tickTask;
        tickTask = new TimerTask() {
            @Override
            public void run() {
                //                if (System.currentTimeMillis() - scheduledExecutionTime() >=
                //                        MAX_TARDINESS)
                //                    return;  // Too late; skip this execution.
                tick();
            }
        };
        timer.schedule(tickTask, 0, 1000/DESIRED_FPS);
        this.game = new Game(null, this, 0, new Date(), null);

        rs = RenderScript.create(_activity);
        squarePaint = new Paint();
        squarePaint.setColor(Color.YELLOW);
    }

    /**
     * To be called on each timer tick
     */
    public void tick()
    {
        if(!isRunning)
            return;

        runningTime += 1.0f/DESIRED_FPS;

        if(isFinished()) {
            stop();
            return;
        }

        for(Target target: targets) {
            // skip targets that are already scored
            if(target.isHit == true) {
                continue;
            }
            if(target.timestamp <= runningTime) {
                float scored_value = target.emotion.getValueFromFace(currentFace);
                float required_value = target.value;
                float score = 100 - Math.abs(scored_value-required_value);

                _activity.sound.play(_activity.soundIds.get(_activity.SOUND_SCORE), 1, 1,
                                        1,0, score / 200f + 0.5f ); // play back the sound slower
                                                                        // depending on hit value
                target.isHit = true;



                Bitmap outputBitmap = null;
                if(currentFrame != null) {
                    // convert NV21 byteArrayFrame from camera to RGB bitmap.
                    Frame.ByteArrayFrame byteArrayFrame = (Frame.ByteArrayFrame) currentFrame;
                    outputBitmap = Nv21Image.nv21ToBitmap(rs, byteArrayFrame.getByteArray(), byteArrayFrame.getWidth(), byteArrayFrame.getHeight());

                    Canvas canvas = new Canvas(outputBitmap);
                    RectF rect = Hit.getBoundingboxForPoints(currentFace.getFacePoints());
                    canvas.drawRect(rect, squarePaint);

                    /*
                    Also possible: only grayscale image - only loops over first part of the bytearray
                    int[] pixels;
                     int p;
                    int size = width*height;
                    for(int i = 0; i < size; i++) {
                        p = data[i] & 0xFF;
                        pixels[i] = 0xff000000 | p<<16 | p<<8 | p;
                    }
                    Bitmap bm = Bitmap.createBitmap(pixels, width, height, Bitmap.Config.ARGB_8888);
                     */
                }

                Hit hit = new Hit(target, game, currentFace, score, outputBitmap);
            }
        }

    }

    public Target getTargetByIndex(int target_index) {
        return targets.get(target_index-1);
    }

    /**
     * Add a target on given timestamp
     * @param emotion
     * @param value
     * @param timestamp
     */
    public void setTarget(Emotion emotion, float value, float timestamp)
    {
//        Log.e(GamingActivity.LOG_TAG, "Set target:" + Float.toString(timestamp) + " " + Float.toString(duration));
        if((timestamp + 1) > duration)
        {
            duration = timestamp + 1; // always a bit onger than last target, as it otherwise the game does not finish pretty
        }
        Target target = new Target();
        target.timestamp = timestamp;
        target.value = value;
        target.emotion = emotion;
        target.index = targets.size() + 1;
        targets.add(target);
        maxScore = getMaxScore();
    }

    /**
     * Add target after existing targets, give delta with last item instead of absolute time.
     * @param emotion
     * @param value
     * @param interval
     */
    public void addTarget(Emotion emotion, float value, float interval)
    {
        float timestamp;
        if(targets.isEmpty()) {
            timestamp = interval;
        } else {
            timestamp = targets.get(targets.size() - 1).timestamp + interval;
        }
        setTarget(emotion, value, timestamp);
    }

    public float getHitTotalValue()
    {
        float value = 0;
        for (Hit hit : game.hits.values()) {
            value += hit.score;
        }
        return value;
    }

    public float getHitTotalMisValue()
    {
        float value = 0;
        for (Hit hit : game.hits.values()) {
            value += 100-hit.score;
        }
        return value;
    }

    public float getHitPercentage() {
        return (getHitTotalValue()/maxScore) * 100;
    }

    public float getMissedPercentage() {
        return (getHitTotalMisValue()/maxScore) * 100;
    }

    /**
     * Check whether given timestamp is within duration of the scenario
     * @param timestamp
     * @return
     */
    public boolean isWithinTime(float timestamp)
    {
        return timestamp <= duration;
    }

    public ArrayList<Target> getTargets() {
        return targets;
    }


    /**
     * Get the time within the scenario (so since start() has been called)
     */
    public float getTime() {
        return runningTime;
        // if not started, don't move the labels, if started, move them by diff_y
//        if(startTime == 0) {
//            return 0;
//        } else {
//            float diff_t = ((System.currentTimeMillis() - startTime)) / (float) 1000;
//            if(diff_t > duration) { // never larger than scenario duration
//                return duration;
//            }
//            return diff_t;
//        }
    }

    public void start()
    {
        startTime = System.currentTimeMillis();
        isRunning = true;
    }

    public void pause() {
        isRunning = false;
    }

    public void stop()
    {
        isRunning = false;
    }


    //  TODO: create AttributeScoreCollection class, with this method.
    public void setCurrentFace(Face face)
    {
        currentFace = face;
    }

    public boolean isFinished()
    {
        return runningTime > duration;
    }

    public Score getScore() {
        if(!isFinished()) {
            return null;
        }

        Score score = new Score(id, getHitTotalValue());
        score.setTargets(targets);
        return score;
    }

    public int getMaxScore() {
        return targets.size() * 100;
    }

    public void createTargets() {
        switch(id) {
            case LVL_ANGER:
                setTarget(Emotion.ANGER, 100, 1);
                setTarget(Emotion.ANGER, 100, 2);
                setTarget(Emotion.ANGER, 10, 3);
                setTarget(Emotion.ANGER, 20, 4);
                setTarget(Emotion.ANGER, 40, 5);
                setTarget(Emotion.ANGER, 70, 6);
                setTarget(Emotion.ANGER, 100, 7);
                break;
            case LVL_JOY:
                setTarget(Emotion.JOY, 100, 1);
                setTarget(Emotion.JOY, 100, 2);
                setTarget(Emotion.JOY, 100, 4);
                setTarget(Emotion.CONTEMPT, 20, 4);
                setTarget(Emotion.ANGER, 100, 5);
                setTarget(Emotion.JOY, 100, 7);
                setTarget(Emotion.ANGER, 100, 9);
                setTarget(Emotion.JOY, 100, 11);
                setTarget(Emotion.JOY, 70, 12);
                setTarget(Emotion.JOY, 60, 13);
                setTarget(Emotion.JOY, 30, 14);
                setTarget(Emotion.JOY, 10, 14.5f);
                setTarget(Emotion.ANGER, 100, 16);
                setTarget(Emotion.JOY, 100, 17);
                setTarget(Emotion.JOY, 100, 18);
                setTarget(Emotion.JOY, 100, 19);
                setTarget(Emotion.JOY, 100, 20);
                break;
            case LVL_SURPRISE:
                setTarget(Emotion.SURPRISE, 20, 1);
                setTarget(Emotion.SURPRISE, 50, 2);
                setTarget(Emotion.SURPRISE, 80, 3);
                setTarget(Emotion.SURPRISE, 100, 4);
                break;
            case LVL_SADDNESS:
                setTarget(Emotion.SADNESS, 20, 1);
                setTarget(Emotion.SADNESS, 50, 2);
                setTarget(Emotion.SADNESS, 80, 3);
                setTarget(Emotion.SADNESS, 100, 4);
                break;
        }

    }

    public int getNextLevelId() {
        int nextIdx = SCENARIOS.indexOf(id) + 1;
        if(SCENARIOS.size() <= nextIdx) {
            return SCENARIOS.get(0);
        }
        return SCENARIOS.get(nextIdx);
    }

    public boolean isFinalLevel() {
        if(SCENARIOS.get(SCENARIOS.size()-1) == id)
            return true;
        return false;
    }

    public boolean isHigherThen(int lvl_id) {
        return isHigherLevel(id, lvl_id);
    }

    public static boolean isHigherLevel(int lvl_id, int then_lvl_id) {
        if(lvl_id == then_lvl_id) {
            return false;
        }

        return SCENARIOS.indexOf(lvl_id) > SCENARIOS.indexOf(then_lvl_id);
    }

    public String toString() {

        switch(id) {
            case LVL_ANGER:
                return "CEO";
            case LVL_JOY:
                return "The Conversation";
            case LVL_SURPRISE:
                return "Party time!";
            case LVL_SADDNESS:
                return "Six feet under";
        }
        return "...";
    }

    public String getDescription() {

        switch(id) {
            case LVL_ANGER:
                return "You're CEO of a big company. Remarkably, research shows that CEO's of big companies look generally more angry and disgusted when the company is doing well.\n" +
                        "\n" +
                        "However, you're company is not doing well. Make sure you hide this for the press that is watching every move!";
            case LVL_JOY:
                return "You're at a job interview, and you know your face is being monitored.\n" +
                        "Make sure that you express your enthusiasm for the job!";
            case LVL_SURPRISE:
                return "Your friends have organised a surprise party and you've found out! However, you don't want them to know this. First keep calm and then make sure you're as surprised and joyful as possible!\n";
            case LVL_SADDNESS:
                return "You're at the funeral of your great aunt. You don't really know her, but still want to show your respect.";
        }
        return "...";
    }

    public Hit getHitForTarget(Target target) {
        return game.hits.get(target.index);
    }

}