using UnityEngine;

public class PingClickHandler : MonoBehaviour
{
    public GameObject chanraoObject, nextPing;
    public int pingIndex;
    private MeshRenderer _modelRenderer, _outlineMesh;
    private bool _modelShown;
    private bool _isBlinking;
    
    public bool CanBeClicked() { return _isBlinking; }

    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;
        var col = GetComponent<Collider>();
        if (col != null) col.enabled = true;
        CreateOutlineMesh();
        _modelShown = false;
        _isBlinking = true;
        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));
        mat.SetFloat("_OutlineWidth", OutlineConfig.Width);
        var go = new GameObject("Outline");
        go.transform.SetParent(transform, false);
        // 稍微往上偏移一点点，防止边框插进地里
        go.transform.position += Vector3.up * 0.05f;
        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()
    {
        PerformClick();
    }

    public void PerformClick()
    {
        if (!_isBlinking) return; // 防止重复点击
        
        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;
            _isBlinking = false;
            ActionHistory.Push(ActionHistory.ActionType.PingFirst, this);
            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);
            else 
            {
                // 如果 nextPing 是 null，说明我是最后一个 ping（也就是 ping.001）
                // 此时所有的 ping 都已经显示了模型，进入阶段二：重新点亮所有的 ping 边框
                var allPings = Object.FindObjectsOfType<PingClickHandler>();
                foreach (var p in allPings)
                {
                    // 只有未被包扎过的 ping 才能重新亮起边框
                    if (p._modelShown)
                    {
                        p.ReEnableBorder();
                    }
                }
                Debug.Log($"[PingClick] {name} 是最后一个 ping，所有边框已重新激活！");
            }
            
            if (nextPing != null) Debug.Log($"[PingClick] {name} 模型显示, 激活 {nextPing.name}");
            else Debug.Log($"[PingClick] {name} 模型显示, 激活下一个");
            
            var sm = FindObjectOfType<StepManager>();
            if (sm != null) sm.RecordPingStep(pingIndex, false);
        }
        else
        {
            if (chanraoObject != null) { chanraoObject.SetActive(true); Debug.Log($"[PingClick] {name} → {chanraoObject.name}"); }
            HideSelf();
            ActionHistory.Push(ActionHistory.ActionType.PingSecond, this);
            var sm = FindObjectOfType<StepManager>();
            if (sm != null) sm.RecordPingStep(pingIndex, true);
            
            // 判断是否是真正的最后一步：检查所有的 PingClickHandler，看是否还有 activeInHierarchy 的。
            // 注意当前 gameObject 刚刚被 SetActive(false)，所以 FindObjectsOfType 获取不到当前的对象了。
            var remainingPings = Object.FindObjectsOfType<PingClickHandler>();
            int activePingCount = 0;
            foreach (var p in remainingPings)
            {
                // In phase 2, finished pings have their collider disabled and _isBlinking set to false.
                var col = p.GetComponent<Collider>();
                if (col != null && col.enabled) activePingCount++;
            }
            
            if (activePingCount == 0)
            {
                Debug.Log("[PingClick] 所有的 ping 都已经绑成 chanrao 了！播放完成语音。");
                var am = FindObjectOfType<AudioManager>();
                if (am != null)
                {
#if UNITY_EDITOR
                    var finishClip = UnityEditor.AssetDatabase.LoadAssetAtPath<AudioClip>("Assets/Audio/people/伤员一切正常，包扎完毕.mp3");
                    if (finishClip != null) am.PlayVoice(finishClip);
#endif
                }
                
                // 隐藏视频面板
                var uiMgr = FindObjectOfType<UIManager>();
                if (uiMgr != null)
                {
                    uiMgr.HideVideo();
                }
            }
        }
    }

    public void ReEnableBorder() 
    { 
        // 如果它已经被隐藏（包扎完毕），则不应该重新激活边框！
        var col = GetComponent<Collider>();
        if (col != null && !col.enabled) return;

        _isBlinking = true; 
        if (_outlineMesh != null) 
        { 
            _outlineMesh.enabled = true; 
            StopAllCoroutines(); 
            StartCoroutine(BlinkOutline()); 
        } 
    }

    public void DisableBorder()
    {
        _isBlinking = false;
        if (_outlineMesh != null) _outlineMesh.enabled = false;
        StopAllCoroutines();
    }

    public void UndoSecondClick() 
    { 
        if (chanraoObject != null) chanraoObject.SetActive(false);
        ShowSelf();
        _modelShown = true; 
        _isBlinking = true;
        if (_outlineMesh != null) _outlineMesh.enabled = true;
        StopAllCoroutines();
        StartCoroutine(BlinkOutline());
    }
    public void UndoShow()
    {
        _modelShown = false;
        _isBlinking = false;
        StopAllCoroutines();
        if (chanraoObject != null) chanraoObject.SetActive(false);
        foreach (var r in GetComponentsInChildren<Renderer>(true)) r.enabled = false;
        var col = GetComponent<Collider>(); if (col != null) col.enabled = false;
        gameObject.SetActive(false);
    }

    private void HideSelf()
    {
        foreach (var r in GetComponentsInChildren<Renderer>(true)) r.enabled = false;
        var col = GetComponent<Collider>(); if (col != null) col.enabled = false;
        _isBlinking = false;
        StopAllCoroutines();
    }

    private void ShowSelf()
    {
        foreach (var r in GetComponentsInChildren<Renderer>(true)) r.enabled = true;
        if (_outlineMesh != null) _outlineMesh.enabled = false;
        var col = GetComponent<Collider>(); if (col != null) col.enabled = true;
    }
    
    public void ResetState()
    {
        _modelShown = false;
        var col = GetComponent<Collider>();
        if (col != null) col.enabled = true;
        _isBlinking = true;
        if (_modelRenderer != null) _modelRenderer.enabled = false;
        // 隐藏自身模型
        foreach (var r in GetComponentsInChildren<Renderer>(true)) { if (_outlineMesh != null && r == _outlineMesh) continue; r.enabled = false; }
        if (_outlineMesh != null) _outlineMesh.enabled = true;
        StopAllCoroutines();
        StartCoroutine(BlinkOutline());
    }
}