QuestioData

using System.Collections.Generic;
using UnityEngine;
using System.IO;
using UnityEngine.UI;

public class QuestionData : MonoBehaviour
{
    public static QuestionData instance { get; private set; }

    private string[] questionFiles = { "rank_0.json", "rank_1.json", "rank_2.json" }; // All question JSON files
    private string currentQuestionsFile = "current.json"; // Current empty JSON file


    private string questionJsonFilePath; // Path of question files
    private string emptyJsonFilePath; // Path of empty file
    private bool answerCheck; // check current question's answer
    private int randomizedIndex;

    public ListQuestions listQuestions;

    [SerializeField] Text questionDisplayText = default;
    [SerializeField] Button yesButton = default;
    [SerializeField] Button noButton = default;
    [SerializeField] private int totalQuestionsLeft;


    private void Awake()
    {
        if(instance == null)
        {
            instance = this;
            DontDestroyOnLoad(gameObject);
        }
        else
        {
            Destroy(gameObject);
        }
    }

    private void Start()
    {

    }

    public void LoadQuestion(int playerRank)
    {
        // Load Questions according on player rank
            questionJsonFilePath = Path.Combine(Application.streamingAssetsPath, questionFiles[playerRank]);
            emptyJsonFilePath = Path.Combine(Application.streamingAssetsPath, currentQuestionsFile);

            ValidateJson(questionJsonFilePath, emptyJsonFilePath);
    }

    private void ValidateJson(string fullOfQuestionJson, string emptyJson)
    {
        if (File.Exists(fullOfQuestionJson))
        {
            string dataAsJson = File.ReadAllText(fullOfQuestionJson);
            listQuestions = JsonUtility.FromJson<ListQuestions>(dataAsJson);

            if (File.Exists(emptyJson))
            {
                string toJson = JsonUtility.ToJson(listQuestions);
                File.WriteAllText(emptyJson, toJson);
            }

            totalQuestionsLeft = listQuestions.questions.Count;
            DispalyQuestion();
        }
    }

    // Display questions randomly
    private void DispalyQuestion()
    {
        if (totalQuestionsLeft > 0)
        {
            int questionIndex = Random.Range(0, listQuestions.questions.Count);
            randomizedIndex = questionIndex;
            questionDisplayText.text = listQuestions.questions[questionIndex].question;
        }
        else if (totalQuestionsLeft <= 0)
        {
            GamePanel.instance.SuccessPanel();
            Debug.Log("Level Has Finished");
            Player.instance.playerData.rankNumber += 1;
            Player.instance.SavePlayerData();
        }
    }

    // Check True Answers
    public void YesAnswer(bool isTrue)
    {
        if (totalQuestionsLeft > 0)
        {
            if (listQuestions.questions[randomizedIndex].isTrue == isTrue)
            {
                print("Yes answer is correct");
                UpdateQuestion(randomizedIndex);
            }
            else if (listQuestions.questions[randomizedIndex].isTrue != isTrue)
            {
                print("Yes answer is incorrect");
                GamePanel.instance.FailPanel();
            }
        }

    }

    // Check False Answers
    public void NoAnswer(bool isFalse)
    {
        if (totalQuestionsLeft > 0)
        {
            if (listQuestions.questions[randomizedIndex].isTrue == isFalse)
            {
                print("No answer is correct");
                UpdateQuestion(randomizedIndex);
            }
            else if (listQuestions.questions[randomizedIndex].isTrue != isFalse)
            {
                print("No answer is incorrect");
                GamePanel.instance.FailPanel();
            }
        }
    }


    private void UpdateQuestion(int removalElement)
    {
        questionDisplayText.text = listQuestions.questions[removalElement].question;
        listQuestions.questions.RemoveAt(removalElement);
        totalQuestionsLeft = listQuestions.questions.Count;
        string newJson = JsonUtility.ToJson(listQuestions);
        File.WriteAllText(emptyJsonFilePath, newJson);
        DispalyQuestion();
        GamePanel.instance.Rotate();
    }

}

[System.Serializable]
public class Questions
{
    public string question;
    public bool isTrue;
}

[System.Serializable]
public class ListQuestions
{
    public List<Questions> questions;
}