using System.Collections.Generic;
using System.Threading.Tasks;
using TMPro;
using UnityEngine;
using UnityEngine.UI;
using Random = UnityEngine.Random;

public class PreTestMenu : Menu<PreTestMenu>
{
    [Header("Questions")]
    [SerializeField] TextMeshProUGUI questionText;
    [SerializeField] List<QuestionSO> questions = new List<QuestionSO>();
    [SerializeField] GameObject[] answerButtons;

    [Header("UI")]
    [SerializeField] TextMeshProUGUI timerText;
    
    [Header("Answers")] 
    [SerializeField] private Sprite normalButttonSprite;
    [SerializeField] private Sprite trueAnswerSprite;
    [SerializeField] private Sprite falseAnswerSprite;

    [Header("Settings")]
    [SerializeField] float timeToComplete = 30f;
    [SerializeField] float timeToShowAnswer = 10f;

    float timer;
    bool isAnswering = true;
    bool hasAnsweredEarly = false;
    int correctAnswerIndex;

    QuestionSO currentQuestion;
    bool isComplete = false;
    
    SaveData saveData;

    int correctAnswers = 0; 
    int totalQuestions = 9; 

    private async void OnEnable()
    {
        await LoadAndRefresh();
        LoadRandomQuestion();
    }

    private async Task LoadAndRefresh()
    {
         saveData = await Cloudsave.LoadData<SaveData>("DataPlayer");
         saveData.isPreTestComplete = true;
    }

    void Update()
    {
        if (isComplete) return;

        timer -= Time.deltaTime;

        int minutes = Mathf.FloorToInt(timer / 60);
        int seconds = Mathf.FloorToInt(timer % 60);
        timerText.text = string.Format("{0:00}:{1:00}", minutes, seconds);

        if (isAnswering && timer <= 0f)
        {
            ShowCorrectAnswer();
        }
        else if (!isAnswering && timer <= 0f)
        {
            LoadNextQuestion();
        }
    }

    async void LoadRandomQuestion()
    {
        if (questions.Count == 0)
        {
            await EndGame();
            return;
        }
        Image buttonImage;

        int index = Random.Range(0, questions.Count);
        currentQuestion = questions[index];
        questions.RemoveAt(index);

        questionText.text = currentQuestion.question;

        for (int i = 0; i < answerButtons.Length; i++)
        {
            TextMeshProUGUI buttonText = answerButtons[i].GetComponentInChildren<TextMeshProUGUI>();
            buttonImage = answerButtons[i].GetComponent<Image>();
            buttonImage.sprite = normalButttonSprite;
            buttonText.text = currentQuestion.GetAnswer(i);
            answerButtons[i].GetComponent<Image>().color = Color.white;
            answerButtons[i].GetComponent<Button>().interactable = true;
        }

        correctAnswerIndex = currentQuestion.answerIndex;
        timer = timeToComplete;
        isAnswering = true;
        hasAnsweredEarly = false;
    }


    public void OnAnswerSelected(int index)
    {
        if (!isAnswering) return;

        hasAnsweredEarly = true;
        isAnswering = false;
        timer = timeToShowAnswer;

        foreach (GameObject btn in answerButtons)
        {
            btn.GetComponent<Button>().interactable = false;
        }

        Image selectedImage = answerButtons[index].GetComponent<Image>();

        if (index == correctAnswerIndex)
        {
            correctAnswers++;
            selectedImage.sprite = trueAnswerSprite;
            questionText.text = "Jawaban Benar!";
        }
        else
        {
            selectedImage.color = Color.black;
            selectedImage.sprite = falseAnswerSprite;
            questionText.text = "Jawaban Salah";
        }

        saveData.preTestStatistik = (int)(((float)correctAnswers / totalQuestions) * 100f);
    }

    void ShowCorrectAnswer()
    {
        isAnswering = false;
        timer = timeToShowAnswer;

        foreach (GameObject btn in answerButtons)
        {
            btn.GetComponent<Button>().interactable = false;
        }

        questionText.text = "Waktu habis";
    }

    void LoadNextQuestion()
    {
        LoadRandomQuestion();
    }

    private async Task EndGame()
    {
        isComplete = true;
        int finalScore = (int)(((float)correctAnswers / totalQuestions) * 100f); 
        saveData.preTestStatistik = finalScore; 
        await Cloudsave.SaveData(saveData, "DataPlayer");
        MainMenu.Open();
        SelectLevel.Open();
    }
}