package com.example.danyal.quizapp;

import android.content.Context;
import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {



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


        setQuestion(1);

    }

    int currentQuestion = 1;
    int correctAnswer = 1;
    int score = 0;
    String name = "";
    String questionType = "";
    boolean lastQuestion = false;
    int numberOfQuestions = 1;
    double percentage = 0.0;


    /**
     * This method access the questions in the string-array questions and updates the
     *      questionTextView with the next question and the RadioGroup with the next set of answer
     *      choices
     * @param questionNumber
     */
    private void setQuestion(int questionNumber) {
        TextView questionTextView = (TextView) findViewById(R.id.radio_button_question);

        ((TextView) findViewById(R.id.question_number)).setText("Question "+questionNumber);
        numberOfQuestions = questionNumber;

        String[] questions = getResources().getStringArray(R.array.questions);
        if (questions.length == questionNumber) {
            lastQuestion = true;

        }

        for(String question : questions) {
            String[] pair = question.split(":");
            int key = Integer.valueOf(pair[0]);
            questionType = pair[1];
            String questionText = pair[3];
            String[] answerChoices = pair[4].split(",");

            if (questionNumber == key) {
                questionTextView.setText(questionText);
                correctAnswer =  Integer.valueOf(pair[2]);
                switch (questionType) {
                    /**
                     * RadioButton type
                     */
                    case "radio":
                        RadioButton aChoiceRadioButton = (RadioButton) findViewById(R.id.a_radio_button);
                        RadioButton bChoiceRadioButton = (RadioButton) findViewById(R.id.b_radio_button);
                        RadioButton cChoiceRadioButton = (RadioButton) findViewById(R.id.c_radio_button);
                        RadioButton dChoiceRadioButton = (RadioButton) findViewById(R.id.d_radio_button);
                        aChoiceRadioButton.setText(answerChoices[0]);
                        bChoiceRadioButton.setText(answerChoices[1]);
                        cChoiceRadioButton.setText(answerChoices[2]);
                        dChoiceRadioButton.setText(answerChoices[3]);
                        break;

                    case "textbox":
                        break;
                    }
                }
            }
        }
    /**
     * This method hides the startButton and the nameField and makes the questionLayout visible
     *      before calling for the next question.
     * @param view
     */
    public void startQuiz(View view) {

        Button startButton = (Button) findViewById(R.id.start_button);
        startButton.setVisibility(View.GONE);
        EditText nameField = (EditText) findViewById(R.id.name_field);
        nameField.setVisibility(View.GONE);
        name = nameField.getText().toString();
        LinearLayout questionLayout = (LinearLayout) findViewById(R.id.question_layout);
        questionLayout.setVisibility(View.VISIBLE);
        setQuestion(currentQuestion);
    }

    /**
     * Prepares the MainActivity for the next question
     * @param view
     */
    public void nextQuestion(View view) {

        if (!lastQuestion) {

            TextView answerTextView = (TextView) findViewById(R.id.answer_text_view);
            answerTextView.setVisibility(View.GONE);
            Button nextQuestionButton = (Button) findViewById(R.id.next_question_button);
            nextQuestionButton.setVisibility(View.GONE);

            RadioGroup radioButtonGroup = (RadioGroup) findViewById(R.id.radio_button_group);
            int radioButtonID = radioButtonGroup.getCheckedRadioButtonId();
            RadioButton radioButton = (RadioButton) radioButtonGroup.findViewById(radioButtonID);
            radioButton.setChecked(false);
            radioButton.setTextColor(Color.BLACK);
            Button submitButton = (Button) findViewById(R.id.submit_button);
            submitButton.setVisibility(View.VISIBLE);



            currentQuestion += 1;
            setQuestion(currentQuestion);
        }
        else { displayScore(); }
    }

    /**
     * Display the final score after the questions are finished
     */
    private void displayScore() {
        TextView answerTextView = (TextView) findViewById(R.id.answer_text_view);
        answerTextView.setVisibility(View.GONE);
        Button nextQuestionButton = (Button) findViewById(R.id.next_question_button);
        nextQuestionButton.setVisibility(View.GONE);
        LinearLayout questionLayout = (LinearLayout) findViewById(R.id.question_layout);
        questionLayout.setVisibility(View.GONE);

        TextView displayScore = (TextView) findViewById(R.id.display_score);

        if (percentage == 100.0) {
            String finalMessage = "Congrats, " + name + ", you had a perfect score!!";
            displayScore.setText(finalMessage);
        }
        else {
            String finalMessage = "Game is over, " + name + ", you had a score of " + percentage +
                    "%.  Better luck next time!";
            displayScore.setText(finalMessage);
        }
        displayScore.setVisibility(View.VISIBLE);


    }

    /**
     * Checks if the submitted answer is correct
     * @param view
     */
    public void checkAnswer(View view) {

        TextView answerTextView = (TextView) findViewById(R.id.answer_text_view);
        answerTextView.setVisibility(View.VISIBLE);
        Button nextQuestionButton = (Button) findViewById(R.id.next_question_button);
        nextQuestionButton.setVisibility(View.VISIBLE);
        Button submitButton = (Button) findViewById(R.id.submit_button);
        submitButton.setVisibility(View.GONE);

        switch(questionType) {
            case "radio":
                RadioGroup radioButtonGroup = (RadioGroup) findViewById(R.id.radio_button_group);
                int radioButtonID = radioButtonGroup.getCheckedRadioButtonId();
                RadioButton radioButton = (RadioButton) radioButtonGroup.findViewById(radioButtonID);
                int idx = radioButtonGroup.indexOfChild(radioButton);
                //radioButton.setChecked(false);
                Log.v("MainActivity", "Answers " + idx + correctAnswer);
                if (idx == correctAnswer) {
                    score += 1;
                    radioButton.setTextColor(Color.GREEN);
                    answerTextView.setText("Correct!!");
                    answerTextView.setTextColor(Color.GREEN);
                    Log.v("MainActivity", "Score is " + score);
                } else {
                    radioButton.setTextColor(Color.RED);
                    answerTextView.setText("Incorrect");
                    answerTextView.setTextColor(Color.RED);
                }
                radioButtonGroup.setEnabled(false);
                break;
           case "textbox":
        }
        percentage = score*100/numberOfQuestions;
        Toast.makeText(getApplicationContext(), "Score: " + percentage +"%", Toast.LENGTH_SHORT).show();

    }

}