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

public class A1M2QuestionManager : MonoBehaviour
{
    public List<A1M2QuestionClass> questions;
    public static A1M2QuestionManager instance;
    public AudioSource thisAS;
    public Image bgImage;
    public Transform answerOrganizer;
    public Text questionTxt;
    private int currentIndex;
    private Animator anim;

    private void Awake()
    {
        instance = this;
        anim = GetComponent<Animator>();
        LoadNextQuestion();
        
        if (GameControl.instance != null)
        {
            GameControl.instance.StartedGame();
        }
    }

    public void LoadNextQuestion()
    {
        if (questions == null || questions.Count <= currentIndex) return;

        if (questions[currentIndex].background && bgImage != null)
        {
            bgImage.sprite = questions[currentIndex].background;
        }
        
        if (questionTxt != null)
        {
            questionTxt.text = questions[currentIndex].questionString;
        }
        
        SetupAnswers();
    }

    public void SetupAnswers()
    {
        if (answerOrganizer == null) return;

        List<A1M2AnswerButton> btnList = new List<A1M2AnswerButton>();
        btnList.AddRange(answerOrganizer.GetComponentsInChildren<A1M2AnswerButton>());
        for(int i = 0; i < btnList.Count; i++)
        {
            if (questions[currentIndex].answers.Count > i)
            {
                btnList[i].SetupThis(questions[currentIndex].answers[i]);
            }
        }
        PlayAudio();
    }

    public void CorrectAnswer()
    {
        if (anim != null)
        {
            anim.SetTrigger("Correct");
        }

        if (A10D1AudioSystem.instance != null)
        {
            A10D1AudioSystem.instance.Correct();
        }

        currentIndex++;
        if (currentIndex < questions.Count)
        {
            StartCoroutine(WaitToNext());
        }
        else
        {
            if (GameControl.instance != null)
            {
                GameControl.instance.FinishGame();
            }
        }
    }

    public void WrongAnswer()
    {
        if (anim != null)
        {
            anim.SetTrigger("Wrong");
        }

        if (A10D1AudioSystem.instance != null)
        {
            A10D1AudioSystem.instance.Wrong();
        }
    }

    public void PlayAudio()
    {
        if (thisAS == null || questions[currentIndex].questionAC == null) return;

        if (thisAS.isPlaying)
        {
            StartCoroutine(QueueSound(questions[currentIndex].questionAC));
        }
        else
        {
            thisAS.PlayOneShot(questions[currentIndex].questionAC);
        }
    }

    IEnumerator QueueSound(AudioClip toPlay)
    {
        while(thisAS != null && thisAS.isPlaying)
        {
            yield return new WaitForEndOfFrame();
        }
        
        if (thisAS != null && toPlay != null)
        {
            thisAS.PlayOneShot(toPlay);
        }
    }

    IEnumerator WaitToNext()
    {
        yield return new WaitForSecondsRealtime(1);
        LoadNextQuestion();
    }
}