using UnityEngine;

public class PingClickHandler : MonoBehaviour
{
    public GameObject chanraoObject, nextPing;
    public int pingIndex;
    private MeshRenderer _modelRenderer, _outlineMesh;
    private bool _modelShown;

    void OnEnable()
    {
        _modelRenderer = GetComponent<MeshRenderer>();
        if (_modelRenderer == null) _modelRenderer = GetComponentInChildren<MeshRenderer>();
        foreach (var r in GetComponentsInChildren<Renderer>(true)) r.enabled = false;
        if (GetComponent<Collider>() == null) gameObject.AddComponent<SphereCollider>().radius = 0.5f;
        CreateOutlineMesh();
        _modelShown = false;
        StopAllCoroutines();
        StartCoroutine(BlinkOutline());
    }

    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));
        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()
    {
        foreach (var c in Object.FindObjectsOfType<Camera>())
        {
            if (!c.enabled) continue;
            foreach (var h in Physics.RaycastAll(c.ScreenPointToRay(Input.mousePosition)))
                if (h.collider?.transform.parent?.name == "touchArray") return;
        }

        if (!_modelShown)
        {
            _modelShown = true;
            StopAllCoroutines();
            if (_modelRenderer != null) _modelRenderer.enabled = true;
            foreach (var r in GetComponentsInChildren<Renderer>(true)) r.enabled = true;
            if (_outlineMesh != null) _outlineMesh.enabled = false;
            if (nextPing != null) nextPing.SetActive(true);
            Debug.Log($"[PingClick] {name} 模型显示, 激活 {nextPing?.name}");
            var sm = FindObjectOfType<StepManager>();
            if (sm != null) sm.RecordPingStep(pingIndex, false);
        }
        else
        {
            if (chanraoObject != null) { chanraoObject.SetActive(true); Debug.Log($"[PingClick] {name} → {chanraoObject.name}"); }
            gameObject.SetActive(false);
            var sm = FindObjectOfType<StepManager>();
            if (sm != null) sm.RecordPingStep(pingIndex, true);
        }
    }

    public void ReEnableBorder() { if (_outlineMesh != null) { _outlineMesh.enabled = true; StopAllCoroutines(); StartCoroutine(BlinkOutline()); } }
    public void UndoSecondClick() {}
    public void UndoShow() { gameObject.SetActive(false); }
}