using UnityEngine;

public class ShoseClickHandler : MonoBehaviour
{
    public GameObject nextObject;
    public Transform targetPoint;
    private MeshRenderer _outlineMesh;
    private bool _clicked;

    void OnEnable()
    {
        var mf = GetComponent<MeshFilter>();
        if (mf == null) mf = GetComponentInChildren<MeshFilter>();
        if (mf != null && mf.sharedMesh != null)
        {
            var mb = mf.sharedMesh.bounds;
            Destroy(GetComponent<SphereCollider>());
            var col = GetComponent<BoxCollider>();
            if (col == null) col = gameObject.AddComponent<BoxCollider>();
            // 按 localScale 缩放 collider 匹配模型实际大小
            col.center = Vector3.Scale(mb.center, transform.localScale);
            col.size = Vector3.Scale(mb.size, transform.localScale) * 1.2f;
            col.enabled = true;
        }
        else { if (GetComponent<Collider>() == null) gameObject.AddComponent<SphereCollider>().radius = 0.3f; }
        CreateOutlineMesh();
        StopAllCoroutines();
        StartCoroutine(BlinkOutline());
        _clicked = false;
    }

    void CreateOutlineMesh()
    {
        if (_outlineMesh != null) return;
        var mf = GetComponent<MeshFilter>();
        if (mf == null) mf = GetComponentInChildren<MeshFilter>();
        if (mf == null || mf.sharedMesh == null) return;
        var shader = Shader.Find("Custom/OutlineUnlit");
        if (shader == null) return;
        var mat = new Material(shader);
        mat.SetColor("_OutlineColor", new Color(0.2f, 0.5f, 1f, 1f));
        mat.SetColor("_MainColor", new Color(0, 0, 0, 0));
        // 描边宽度补偿 scale
        float s = transform.lossyScale.magnitude / Mathf.Sqrt(3);
        mat.SetFloat("_OutlineWidth", s > 0.001f ? OutlineConfig.Width / s : OutlineConfig.Width);
        var go = new GameObject("Outline");
        go.transform.SetParent(transform, false);
        go.AddComponent<MeshFilter>().sharedMesh = mf.sharedMesh;
        _outlineMesh = go.AddComponent<MeshRenderer>();
        _outlineMesh.material = mat;
    }

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

    void OnMouseDown()
    {
        if (_clicked) return;
        _clicked = true;
        Debug.Log("[ShoseClick] ★ 被点击 ★");
        StopAllCoroutines();
        if (_outlineMesh != null) _outlineMesh.enabled = false;
        if (targetPoint != null) { transform.position = targetPoint.position; transform.rotation = targetPoint.rotation; }
        if (nextObject != null) nextObject.SetActive(true);
    }
}