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


public class OscHandler : MonoBehaviour
{

    [SerializeField]
    public CanvasGroup intro;

    [SerializeField]
    public CanvasGroup main;

    [SerializeField]
    public VideoPlayer videoPlayer;

    [SerializeField]
    public Image mask;

    [SerializeField] 
    OscConnection _connection = null;

    // Start is called before the first frame update
    void Start()
    {
        setupOsc();
    }

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

    public void setupOsc()
    {
        Debug.Log("Setting up OSC server...");

        var port = _connection?.port ?? 0;
        var server = OscMaster.GetSharedServer(port);

        // if(server.IsRunning){
            server.MessageDispatcher.AddCallback("/reset", 
                (string address, OscDataHandle data) => {
                   
                   onReset();
                   
                }
            );
            server.MessageDispatcher.AddCallback("/go", 
                 (string address, OscDataHandle data) => {
                    Debug.Log("/go message received");

                    videoPlayer.Stop();
                    videoPlayer.time = 0;
                    videoPlayer.Play();
                    videoPlayer.loopPointReached += (VideoPlayer vp) => {
                        
                        StartCoroutine(FadeCanvasGroup(intro, 1, 0, 1f));
                        StartCoroutine(FadeCanvasGroup(main, 0, 1, 1f));

                    };
                   
                }
            );
            server.MessageDispatcher.AddCallback("/inputTime", 
                 (string address, OscDataHandle data) => {
                   
                   float duration = data.GetElementAsFloat(0);
                   Debug.Log("/inputTime message received"+duration);
                   onInputTime(duration);
                   
                }
            );

            server.MessageDispatcher.AddCallback("/end", 
                 (string address, OscDataHandle data) => {
                   
                    Debug.Log("/end message received");
;
                    StartCoroutine(FadeCanvasGroup(main, 1, 0, 1f));
                   
                }
            );
            
        // }


    }


    private IEnumerator FadeCanvasGroup(CanvasGroup canvasGroup, float startAlpha, float endAlpha, float duration)
    {
        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;
    }

    public void onInputTime(float duration)
    {
        Debug.Log("Start decreasing fill over time: " + duration);

        if (mask != null)
        {
            StopCoroutine("DecreaseFill");
            StartCoroutine(DecreaseFill(duration));
        }
    }

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

        while (elapsed < duration)
        {
            elapsed += Time.deltaTime;
            mask.fillAmount = Mathf.Lerp(1f, 0f, elapsed / duration);
            yield return null;
        }

        mask.fillAmount = 0f;
    }

    public void onReset()
    {
       Debug.Log("/reset message received");

        videoPlayer.Stop();
        intro.alpha = 0f;
        main.alpha = 0f;
    }
}