package com.example.trivia;

import androidx.appcompat.app.AppCompatActivity;
import androidx.cardview.widget.CardView;

import android.content.SharedPreferences;
import android.graphics.Color;
import android.nfc.cardemulation.CardEmulation;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;
import android.view.View;

import com.example.trivia.data.AnswerListAsyncResponse;
import com.example.trivia.data.QuestionBank;
import com.example.trivia.model.Question;
import com.example.trivia.model.Score;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private ImageButton nextBtn;
    private ImageButton backBtn;
    private Button trueBtn;
    private Button falseBtn;
    private TextView questionTV;
    private TextView questionNumber;
    private TextView scoreTV;
    private TextView topScoreTV;
    private int pointer=0;
    private int points=0;
    private List<Question> questionList;
    private Score score;

    @Override
    protected void onCreate(Bundle savedInstanceState) {


        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        score=new Score();
        SharedPreferences sharedPreferences=this.getSharedPreferences("position",MODE_PRIVATE);
        pointer=sharedPreferences.getInt("position",0);

        //instantiate
        nextBtn=findViewById(R.id.next_button);
        backBtn=findViewById(R.id.back_button);
        trueBtn=findViewById(R.id.true_button);
        falseBtn=findViewById(R.id.false_button);
        questionNumber=findViewById(R.id.question_number);
        questionTV=findViewById(R.id.question_text_view);
        scoreTV=findViewById(R.id.score);
        topScoreTV=findViewById(R.id.topScore);


        falseBtn.setOnClickListener(this);
        trueBtn.setOnClickListener(this);
        nextBtn.setOnClickListener(this);
        backBtn.setOnClickListener(this);

        showHighScore();
        // store questions in a list
         questionList=new QuestionBank().getQuestions(new AnswerListAsyncResponse() {
            @Override
            public void processFinished(ArrayList<Question> questionArrayList) {
                for(int i=0;i<questionArrayList.size();i++){
                Log.d("json data","processFinished"+questionArrayList.get(i).getQtext());}

                updateQuestion();
                updateScore();
                questionNumber();


            }
        });
    }

    @Override
    protected void onPause() {
        super.onPause();
        saveHighScore();
        saveCurrentQuestion();


    }

    @Override
    public void onClick(View view) {
        switch(view.getId()){

            case R.id.true_button:
                 Toast.makeText(MainActivity.this,"True",Toast.LENGTH_LONG).show();
                    checkAnswer(true);
                    updateScore();
                    nextQuestion();

                break;
            case R.id.false_button:
                 Toast.makeText(MainActivity.this,"False",Toast.LENGTH_LONG).show();
                    checkAnswer(false);
                    updateScore();
                    nextQuestion();
                break;

            case R.id.next_button:
               // Toast.makeText(MainActivity.this,"Next",Toast.LENGTH_LONG).show();
                nextQuestion();
                updateQuestion();
                questionNumber();
                break;
            case R.id.back_button:
                if(pointer<0){
                    pointer=913;

                }

                pointer=(pointer-1)%questionList.size();
                updateQuestion();
                questionNumber();
                break;

        }

    }

    //validate answer
    public void checkAnswer(boolean check){
        boolean trueAns=questionList.get(pointer).isAnswerTrue();
        int toastMessageID=0;
        if(check==trueAns){
            toastMessageID=R.string.right_ans;
            trueAnimation();
            increasePoints();
        }else{
            toastMessageID=R.string.wrong_ans;
            falseAnimation();
            decreasePoints();

        }

        Toast.makeText(MainActivity.this,toastMessageID,Toast.LENGTH_LONG).show();

    }

    //increase score
    public void increasePoints(){
        points++;
        score.setScore(points);
   }

    //decrease score
    public void decreasePoints(){

        if(points>0){
            points=points-1;
        }else{
            points=0;
        }
        score.setScore(points);
    }

    // display progression in TextView
    public void questionNumber(){
        int position=pointer+1;
        int size=questionList.size()+1;
        String display= position+"/"+size;
        questionNumber.setText("Question: "+display);

    }

    // display question in TextView
    public void updateQuestion(){

        questionTV.setText(questionList.get(pointer).getQtext());
    }

    // display score in TextView
    public void updateScore(){

        scoreTV.setText("                score:"+score.getScore()+"/914");
    }

    public void saveHighScore(){
        //create sharedPreference file
    SharedPreferences saveHighestScore=getSharedPreferences("high",MODE_PRIVATE);
    //get score from the file
      int highscore=saveHighestScore.getInt("high",0);

      //compare score from xml to score in the class
        if(score.getScore()>highscore){
            SharedPreferences.Editor editor=saveHighestScore.edit();
            editor.putInt("high",score.getScore());
            editor.apply();
        }
    }

    public void showHighScore(){
        SharedPreferences sharedPreferences=getSharedPreferences("high",MODE_PRIVATE);
        int score=sharedPreferences.getInt("high",0);
        topScoreTV.setText("Highest Score:"+Integer.toString(score));

    }


    public void saveCurrentQuestion(){
        //create file
        SharedPreferences lastPosition=getSharedPreferences("position",MODE_PRIVATE);
        SharedPreferences.Editor editor=lastPosition.edit();
        editor.putInt("position",pointer);
        editor.commit();

    }

    /*public void displaySavedQuestion(){
        //create file
        SharedPreferences lastQuestion=getSharedPreferences("pos",MODE_PRIVATE);
        int pos=lastQuestion.getInt("pos",0);
        questionTV.setText(questionList.get(pos).getQtext());

    }*/

    //go to the next question
    public void nextQuestion(){
        pointer=(pointer+1)%questionList.size();
        questionTV.setText(questionList.get(pointer).getQtext());
    }

    //animation
    private void falseAnimation(){
        Animation shake = AnimationUtils.loadAnimation(MainActivity.this, R.anim.shape_animation);
        final CardView cardView=findViewById(R.id.card_view);
        cardView.setAnimation(shake);
        shake.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {
                cardView.setCardBackgroundColor(Color.RED);

            }

            @Override
            public void onAnimationEnd(Animation animation) {
                cardView.setCardBackgroundColor(Color.WHITE);


            }

            @Override
            public void onAnimationRepeat(Animation animation) {
                nextQuestion();

            }
        });

            cardView.startAnimation(shake);

        }



    private void trueAnimation(){
        Animation trueAnim= new AlphaAnimation(1.0f,0.0f);
        trueAnim.setDuration(1500);
        final CardView cardView=findViewById(R.id.card_view);
        trueAnim.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {
                cardView.setCardBackgroundColor(Color.GREEN);
            }

            @Override
            public void onAnimationEnd(Animation animation) {
                cardView.setCardBackgroundColor(Color.WHITE);
            }

            @Override
            public void onAnimationRepeat(Animation animation) {
                nextQuestion();

            }
        });

            cardView.startAnimation(trueAnim);
    }


}