using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Playables;
using DG.Tweening; // 引入 DoTween 命名空间
using Yarn.Unity;
using AibisDream;
using AibisDream.Kit;
using AibisDream.UI;

public class LineInteraction : MonoBehaviour
{
    public GameObject actorGroup; // 关联的Playable Director
    public PlayableDirector timelineDirector; // 关联的Playable Director
    public SpriteRenderer scissorSpriteRenderer; // 剪刀的SpriteRenderer
    public SpriteRenderer cutLineSpriteRenderer; // 剪刀的SpriteRenderer
    public Sprite closedScissorSprite; // 剪刀合上的Sprite
    public Sprite openScissorSprite; // 剪刀张开的Sprite
    public float openYMin; // Y轴范围的最小值
    public float openYMax; // Y轴范围的最大值
    public float fadeDuration = 0.5f; // 淡入淡出持续时间
    
    private bool isActive = false;

    // Start is called before the first frame update
    void Start()
    {
        // 初始状态不激活
        actorGroup.SetActive(false);
        scissorSpriteRenderer.transform.localPosition =
            new Vector3(12f, openYMin - 3, scissorSpriteRenderer.transform.position.z);
        cutLineSpriteRenderer.enabled = false;
    }

    // Update is called once per frame
    void Update()
    {
        if (!isActive) return;

        // 获取鼠标在世界坐标中的位置
        Vector3 mousePosition = Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y,
            Camera.main.nearClipPlane));

        // 更新剪刀的Y轴位置以跟随鼠标
        scissorSpriteRenderer.transform.localPosition = new Vector3(scissorSpriteRenderer.transform.localPosition.x,
            mousePosition.y, scissorSpriteRenderer.transform.localPosition.z);

        // 检查Y轴位置并更换Sprite
        if (mousePosition.y >= openYMin && mousePosition.y <= openYMax)
        {
            scissorSpriteRenderer.sprite = openScissorSprite;
            cutLineSpriteRenderer.enabled = true;
            // 检查玩家交互（例如按下鼠标左键）；剪一次后立即禁用，避免重复剪线/音效
            if (Input.GetMouseButtonDown(0))
            {
                isActive = false;
                ContinueTimeline();
            }
        }
        else
        {
            scissorSpriteRenderer.sprite = closedScissorSprite;
            cutLineSpriteRenderer.enabled = false;
        }
    }

    [YarnCommand("play_timeline_cutline")]
    public void PlayTimeline()
    {
        timelineDirector.Play();
    }

    public void FinishCutLine()
    {
        StartCoroutine(FinishSequence());
    }

    private IEnumerator FinishSequence()
    {
        // Timeline 末尾 Black Fade 已盖黑：交接给 UI 黑幕，避免销毁 Cutline 时露头
        var panel = UIManager.Instance.GetPanel<ScreenTransitionPanel>();
        yield return panel.FadeInAsync(0f);

        Destroy(gameObject);

        // CutLine 节点内 fade_out 揭开头部
        DialogController.Instance.StartDialogNode("OnCutLineComplete");
    }

    public void ActivateInteraction()
    {
        StartCoroutine(InteractionSequence());
    }

    private IEnumerator InteractionSequence()
    {
        // 开始阶段：淡入
        scissorSpriteRenderer.transform.DOLocalMoveX(7.39f, fadeDuration);
        cutLineSpriteRenderer.DOFade(1f, fadeDuration);
        AudioManager.Instance.PlaySfx("event:/Scriptal/scissor_in");
        yield return new WaitForSeconds(fadeDuration);

        // 执行阶段：激活交互逻辑
        isActive = true;

        // 等待交互完成
        yield return null;
    }

    void ContinueTimeline()
    {
        AudioManager.Instance.PlaySfx("event:/ActionFB/wire_cut");
        timelineDirector.Play();
    }
}