using UnityEngine;

/// <summary>
/// 挂在 chanraotuibu 对象上。蓝色矩形闪烁描边，点击显示模型并激活下个对象（ping.004）。
/// </summary>
public class ChanraoTuibuHandler : MonoBehaviour
{
    public GameObject nextObject;

    private MeshRenderer _meshRenderer;
    private LineRenderer _outlineRenderer;

    void OnEnable()
    {
        _meshRenderer = GetComponent<MeshRenderer>();
        if (_meshRenderer == null) _meshRenderer = GetComponentInChildren<MeshRenderer>();
        if (_meshRenderer != null) _meshRenderer.enabled = false;
        CreateBlueOutline();
        StopAllCoroutines();
        StartCoroutine(BlinkOutline());
    }

    void CreateBlueOutline()
    {
        if (_outlineRenderer != null) return;
        var ringGo = new GameObject("BlueRing");
        ringGo.transform.SetParent(transform, false);
        _outlineRenderer = ringGo.AddComponent<LineRenderer>();
        _outlineRenderer.useWorldSpace = true;
        _outlineRenderer.loop = true;
        _outlineRenderer.startWidth = 0.015f;
        _outlineRenderer.endWidth = 0.015f;
        _outlineRenderer.material = new Material(Shader.Find("Unlit/Color"));
        _outlineRenderer.material.color = new Color(0.2f, 0.5f, 1f);
        _outlineRenderer.startColor = new Color(0.2f, 0.5f, 1f);
        _outlineRenderer.endColor = new Color(0.2f, 0.5f, 1f);

        // 基于模型 Bounds 画矩形
        Bounds b;
        if (_meshRenderer != null) b = _meshRenderer.bounds;
        else b = new Bounds(transform.position, new Vector3(0.3f, 0.01f, 0.3f));
        float y = b.max.y + 0.05f;
        Vector3 p0 = new Vector3(b.min.x, y, b.min.z);
        Vector3 p1 = new Vector3(b.min.x, y, b.max.z);
        Vector3 p2 = new Vector3(b.max.x, y, b.max.z);
        Vector3 p3 = new Vector3(b.max.x, y, b.min.z);
        _outlineRenderer.positionCount = 5;
        _outlineRenderer.SetPosition(0, p0);
        _outlineRenderer.SetPosition(1, p1);
        _outlineRenderer.SetPosition(2, p2);
        _outlineRenderer.SetPosition(3, p3);
        _outlineRenderer.SetPosition(4, p0);
    }

    System.Collections.IEnumerator BlinkOutline()
    {
        while (true)
        {
            if (_outlineRenderer != null) _outlineRenderer.enabled = !_outlineRenderer.enabled;
            yield return new WaitForSeconds(0.4f);
        }
    }

    void OnMouseDown()
    {
        Debug.Log($"[ChanraoTuibu] {name} 被点击");
        StopAllCoroutines();
        if (_meshRenderer != null) _meshRenderer.enabled = true;
        if (_outlineRenderer != null) _outlineRenderer.enabled = true;
        if (nextObject != null) { nextObject.SetActive(true); Debug.Log($"[ChanraoTuibu] → {nextObject.name} 已激活"); }
    }
}