using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Video;
using OscJack;
using TMPro;


public class OscHandler : MonoBehaviour
{

    [SerializeField]
    public CanvasGroup intro;
    
    [SerializeField]
    public CanvasGroup main;

    [SerializeField]
    public CanvasGroup light_mask;

    [SerializeField]
    public VideoPlayer videoPlayer;

    [SerializeField]
    public Image mask;


    [SerializeField]
    public float _fadeDuration = 1f;

    [SerializeField]
    public float _hintDuration = 0.5f;

    [SerializeField]
    public float _maskDuration = 0.2f;
    [SerializeField]
    public float _lastDurationToShow = 30f;

    [SerializeField]
    public TextMeshProUGUI statusText;

    [SerializeField]
    public CanvasGroup hint;

    private IEnumerator coroutine_hint;
    private IEnumerator coroutine_countdown;

    SetChoiceEffect setChoiceEffect;

    [SerializeField]
    public TextMeshProUGUI stepText;

    [SerializeField]
    public CanvasGroup hintforChat;
    [SerializeField]
    public CanvasGroup hintforStep;


    // Start is called before the first frame update
    void Start()
    {
        setChoiceEffect = main?.GetComponent<SetChoiceEffect>();
    }

    // Update is called once per frame
    void Update()
    {

    }


    private IEnumerator FadeCanvasGroup(CanvasGroup canvasGroup, float startAlpha, float endAlpha, float duration, float delay = 0f)
    {
        if (delay > 0f)
            yield return new WaitForSeconds(delay);

        canvasGroup.alpha = startAlpha;
        float elapsedTime = 0f;

        while (elapsedTime < duration)
        {
            elapsedTime += Time.deltaTime;
            canvasGroup.alpha = Mathf.Lerp(startAlpha, endAlpha, elapsedTime / duration);
            yield return null;
        }

        canvasGroup.alpha = endAlpha;
    }

    private IEnumerator DecreaseFill(float duration)
    {
        float elapsed = 0f;
        mask.fillAmount = 1f;

        while (elapsed < duration)
        {
            elapsed += Time.deltaTime;

            if (duration - elapsed > _lastDurationToShow)
            {
                mask.fillAmount = 0;
                mask.gameObject.SetActive(false);
            }
            else
            {
                mask.gameObject.SetActive(true);
                mask.fillAmount = Mathf.Lerp(0f, 1f, (duration - elapsed) / _lastDurationToShow);
            }
            yield return null;
        }

        mask.fillAmount = 0f;
    }


    public void onStatus(string status)
    {
        Debug.Log("/status message received: " + status);

        videoPlayer.Stop();

        if (coroutine_hint != null) StopCoroutine(coroutine_hint);

        mask.fillAmount = 0f;

        switch (status)
        {
            case "reset":
                intro.alpha = 0f;
                main.alpha = 0f;
                // light_mask.alpha = 0f;
                hint.alpha = 0f;
                setChoiceEffect?.Reset();
                break;
            case "intro":
                // StartCoroutine(FadeCanvasGroup(light_mask, 0f, 1f, _maskDuration));
                StartCoroutine(FadeCanvasGroup(intro, 0f, 1f, _fadeDuration, _maskDuration));


                videoPlayer.time = 0f;
                videoPlayer.Play();
                videoPlayer.loopPointReached += vp =>
                {
                    Debug.Log("Video playback completed.");
                    StartCoroutine(FadeCanvasGroup(intro, 1f, 0f, _fadeDuration));
                    // StartCoroutine(FadeCanvasGroup(main, 0f, 1f, _fadeDuration));
                    videoPlayer.loopPointReached -= null;
                };
                break;
            case "go":

                // if (light_mask.alpha < 1f) StartCoroutine(FadeCanvasGroup(light_mask, light_mask.alpha, 1f, _fadeDuration));
                StartCoroutine(FadeCanvasGroup(intro, intro.alpha, 0f, _fadeDuration));
                StartCoroutine(FadeCanvasGroup(main, main.alpha, 1f, _fadeDuration));

                break;
            case "end":
                if (intro.alpha > 0f) StartCoroutine(FadeCanvasGroup(intro, 1f, 0f, _fadeDuration));
                StartCoroutine(FadeCanvasGroup(main, 1f, 0f, _fadeDuration));
                // StartCoroutine(FadeCanvasGroup(light_mask, 1f, 0f, _maskDuration, _fadeDuration));
                if (hint.alpha > 0f)
                {
                    coroutine_hint = FadeCanvasGroup(hint, hint.alpha, 0f, _hintDuration);
                    StartCoroutine(coroutine_hint);
                }

                videoPlayer.Stop();
                break;
            default:
                Debug.LogWarning("Unknown status: " + status);
                break;
        }

    }
    public void onCountDown(string time)
    {
        Debug.Log("/countdown message received: " + time);

        if (mask != null)
        {

            if (time == "0")
            {
                mask.fillAmount = 0f;
            }
            else
            {
                if (coroutine_countdown != null) StopCoroutine(coroutine_countdown);
                coroutine_countdown = DecreaseFill(float.Parse(time));
                StartCoroutine(coroutine_countdown);
            }
        }

    }

    public void onInput(string input)
    {
        Debug.Log("/input message received: " + input);




        if (input.Length == 0)
        {
            statusText.text = "";
            // hintforChat.alpha = 0f;            
            if (hintforChat.alpha > 0f)
            {
                StartCoroutine(FadeCanvasGroup(hintforChat, hintforChat.alpha, 0f, _hintDuration));
            }
        }
        else
        {
            if (hint.alpha < 1f)
            {
                if (coroutine_hint != null) StopCoroutine(coroutine_hint);
                coroutine_hint = FadeCanvasGroup(hint, hint.alpha, 1f, _hintDuration);
                StartCoroutine(coroutine_hint);
            }


            statusText.text = input;
            // hintforChat.alpha = 1f;
            if (hintforChat.alpha < 1f)
            {
                StartCoroutine(FadeCanvasGroup(hintforChat, hintforChat.alpha, 1f, _hintDuration));
            }

            if (hint.alpha < 1f)
            {
                if (coroutine_hint != null) StopCoroutine(coroutine_hint);
                coroutine_hint = FadeCanvasGroup(hint, hint.alpha, 1f, _hintDuration);
                StartCoroutine(coroutine_hint);
            }
        }
       

    }
    public void onHint(string text)
    {
        Debug.Log("/hint message received: " + text);
        
        stepText.text = text;

        StartCoroutine(FadeCanvasGroup(hintforStep, hintforStep.alpha, 1f, _hintDuration));

        if (coroutine_hint != null) StopCoroutine(coroutine_hint);
        coroutine_hint = FadeCanvasGroup(hint, hint.alpha, text.Length > 0 ? 1f : 0f, _hintDuration);
        StartCoroutine(coroutine_hint);
    }
}