using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using MyBT;

#if UNITY_EDITOR
using UnityEditor;
[CustomEditor(typeof(NamedFadeScene))]
public class NamedFadeSceneInspector : ComponentHandlerInspector
{
}
#endif

[System.Serializable]
public class NamedFadeScene : ComponentHandler
{
    public override string TypeLabel()
    {
        return "FadeScene";
    }

    public override string ContentLabel()
    {
        UpdateComponent();
        return "Black";
    }

    public override void UpdateComponent()
    {
        base.UpdateComponent();
        _renderer = GetComponent<Renderer>();
        if (_renderer == null)
        {
            Debug.LogError("Renderer component not found on this GameObject.");
            return;
        }
        _material = _renderer.sharedMaterial;
    }

    public float duration = 5f;

    private Renderer _renderer;
    private Material _material;


    public override void FadeOut(NodeState nodeState)
    {
        switch (nodeState)
        {
            case NodeState.FirstRun:
                gameObject.SetActive(true);
                StartCoroutine(FadeAlpha(0f, 1f));
                break;
            case NodeState.Running:
                if (_material.color.a == 1f)
                {
                    Task.SetSucceeded();
                }
                break;
            case NodeState.Aborting:
                break;
        }
    }

    public override void FadeIn(NodeState nodeState)
    {
        switch (nodeState)
        {
            case NodeState.FirstRun:
                StartCoroutine(FadeAlpha(1f, 0f));
                break;
            case NodeState.Running:
                if (_material.color.a == 0f)
                {
                    gameObject.SetActive(false);
                    Task.SetSucceeded();
                }
                break;
            case NodeState.Aborting:
                break;
        }
    }

    private IEnumerator FadeAlpha(float startAlpha, float endAlpha)
    {
        float elapsedTime = 0f;
        Color color = _material.color;

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

        // Ensure the final alpha value is set
        color.a = endAlpha;
        _material.color = color;
    }
}