using System;
using System.Collections;
using System.Collections.Generic;
using TMPro;
using UnityEngine;
using UnityEngine.Serialization;
using UnityEngine.UI;

public class QuizPopUp : Menu<QuizPopUp>
{
    [Header("Questions")]
    [SerializeField] TextMeshProUGUI questionText;
    [SerializeField] QuestionSO currentQuestion;

    [Header("Answers")] 
    [SerializeField] private Sprite trueAnswerSprite;
    [SerializeField] private Sprite falseAnswerSprite;
    [SerializeField] GameObject[] answerButtons;
    int correctAnswerIndex;
    bool hasAnsweredEarly;

    [Header("Timer")]
    [SerializeField] Image timerImage;
    
    public GameManager gameManager;
    public DataManager dataManager;

    public bool isComplete = false;

    bool isGameOver = false;
    
    //========================
    [SerializeField] float timeToCompleteQuestion = 30f;
    [SerializeField] float timeToShowCorrectAnswer = 10f;

    public bool loadNextQuestion;
    public float fillFraction;
    public bool isAnsweringQuestion;

    float timerValue;

    private void OnEnable()
    {
        gameManager = FindObjectOfType<GameManager>();
        dataManager = FindObjectOfType<DataManager>();

        if (gameManager == null) return;

        currentQuestion = gameManager.currentQuestion;
        correctAnswerIndex = currentQuestion.answerIndex;

        timerValue = timeToCompleteQuestion;
        isAnsweringQuestion = true;              
        fillFraction = 1f;
        loadNextQuestion = false;
        hasAnsweredEarly = false;
        isComplete = false;

        SetButtonState(true);

        DisplayQuestion();

    }
    
    private void OnDisable()
    {
        // Reset question and timer state
        isAnsweringQuestion = false;
        hasAnsweredEarly = false;
        loadNextQuestion = false;
        isComplete = false;
        fillFraction = 1f;
        timerValue = 0f;

        // Reset question text
        questionText.text = "";

        // Reset all button colors and enable them
        for (int i = 0; i < answerButtons.Length; i++)
        {
            Button button = answerButtons[i].GetComponent<Button>();
            button.interactable = true;

            Image buttonImage = answerButtons[i].GetComponent<Image>();
            buttonImage.color = Color.white; // ganti ke warna default
        }

        // Reset timer UI
        if (timerImage != null)
        {
            timerImage.fillAmount = 1f;
        }
    }

    void Update()
    {
        if (gameManager == null)
        {
            return;
        }
        StateLoadQuestion();
        UpdateTimer();
        if(isComplete)
        {
            Debug.Log("Game Over");
            isComplete = false;
        }
    }
    
    public void CancelTimer()
    {
        timerValue = 0;
    }

    public void UpdateTimer()
    {
        timerValue -= Time.deltaTime;

        if (isAnsweringQuestion)
        {
            if (timerValue > 0)
            {
                fillFraction = timerValue / timeToCompleteQuestion;
            }
            else
            {
                timerValue = timeToShowCorrectAnswer;
                isAnsweringQuestion = false;
            }
        }
        else
        {
            if (timerValue > 0)
            {
                fillFraction = timerValue / timeToShowCorrectAnswer;
            }
            else
            {
                timerValue = timeToCompleteQuestion;
                isAnsweringQuestion = true;
            }
        }
    }

    void StateLoadQuestion()
    {
        timerImage.fillAmount = fillFraction;
        if (loadNextQuestion)
        {
            GetNextQuestion();
            hasAnsweredEarly = false;
            loadNextQuestion = false;
        }
        else if (!hasAnsweredEarly && !isAnsweringQuestion)
        {
            SetButtonState(false);
            Debug.Log("Game Over");
            this.enabled = false;
            questionText.text = "Waktu Habis";
            StartCoroutine(DelayAfterAnswerFalse());

        }
    }

    public void OnAnswerSelected(int index)
    {
        hasAnsweredEarly = true;
        DisplayAnswer(index);
        SetButtonState(false);
        CancelTimer();
    }

    void DisplayAnswer(int index)
    {
        Image buttonImage;

        if (index == currentQuestion.answerIndex)
        {
            //implement sound
            questionText.text = "Jawaban Benar!";
            buttonImage = answerButtons[index].GetComponent<Image>();
            buttonImage.sprite = trueAnswerSprite;
            // implement score ++;
            isComplete = true;
            StartCoroutine(DelayAfterAnswerTrue());

        }

        else
        {
            //implement sound
            questionText.text = "Jawaban Salah !";
            buttonImage = answerButtons[index].GetComponent<Image>();
            buttonImage.sprite = falseAnswerSprite;
            StartCoroutine(DelayAfterAnswerFalse());

        }
    }

    void GetNextQuestion()
    {
        Debug.Log("Win Question");
    }

    void DisplayQuestion()
    {
        questionText.text = currentQuestion.question;

        for (int i = 0; i < answerButtons.Length; i++)
        {
            TextMeshProUGUI buttonText = answerButtons[i].GetComponentInChildren<TextMeshProUGUI>();
            buttonText.text = currentQuestion.answers[i];
        }
    }
    
    IEnumerator DelayAfterAnswerTrue()
    {
        dataManager.Load();
        if (currentQuestion.isMateriKesehatanGigi)
        {
            int checkData = gameManager.indexQuestion;
            if (dataManager.isMateriKesehatanGigiComplete[checkData] == false)
            {
                dataManager.isMateriKesehatanGigiComplete[checkData] = true;
                dataManager.MateriKesehatanGigi += 20;
                dataManager.Save();
            }
        }
        else
        {
            int checkData = gameManager.indexQuestion;
            if (dataManager.isMateriPenyakitGigi1Complete[checkData] == false)
            {
                dataManager.isMateriPenyakitGigi1Complete[checkData] = true;
                dataManager.MateriPenyakitGigi += 25;
                dataManager.Save();
            }
        }
        yield return new WaitForSeconds(1);
        SceneController.Instance.LoadScene(currentQuestion.nextSceneName);
        dataManager.Save();
        GameMenu.Open();
    }
    
    IEnumerator DelayAfterAnswerFalse()
    {
        yield return new WaitForSeconds(1f);
        SceneController.Instance.RestartScene();
        enabled = true;
        GameMenu.Open();
    }

    void SetButtonState(bool state)
    {
        for (int i = 0; i < answerButtons.Length; i++)
        {
            Button button = answerButtons[i].GetComponent<Button>();
            button.interactable = state;
        }
    }
}