using UnityEngine;
using Sirenix.OdinInspector;
using UnityEngine.UI;
using TMPro;
using Framework;
using Debug = DebugUtil;

public enum ERedPointShowType
{
    [LabelText("隐藏")]
    None = 0,
    [LabelText("红点")]
    Icon = 1,
    [LabelText("数字")]
    Count = 2,
    [LabelText("红点加数字")]
    IconAndCount = 3,
}

public class RedPointUIController : MonoBehaviour
{
    const string ICON_PATH = "icon";
    const string TEXT_PATH = "count";
    const int NODE_DEFAULT_ID = -1;

    private RedPointNode _node;
    private Image _icon;
    private TMP_Text _count;

    [OnValueChanged("OnNodeIDChanged")]
    [LabelText("节点ID")]
    [SerializeField]
    private int _nodeID = NODE_DEFAULT_ID;

    [SerializeField]
    private int ParentID;

    [LabelText("消息数(为0时红点隐藏)")]
    [SerializeField]
    private int showTag = -1;
    [SerializeField]
    private int childCnt = 0;

    [OnValueChanged("OnShowTypeChanged")]
    [LabelText("展示类型")]
    [SerializeField]
    private ERedPointShowType _showType = ERedPointShowType.IconAndCount;

    public GameObject CachedObj { get; private set; }

    private bool _hasAwake;
    
    public ERedPointShowType ShowType
    {
        get => _showType;
        set
        {
            if (_showType != value)
            {
                _showType = value;
                ApplyShowType();
            }
        }
    }

    public int NodeID
    {
        get => _nodeID;
        set
        {
            if (_nodeID != value)
            {
                _nodeID = value;
                Show();
            }
        }
    }

    private void Awake()
    {
        _hasAwake = true;
        CachedObj = gameObject;
        BindWidget();
        RegisterEvent();
        Show();
    }

    private void OnDestroy()
    {
        UnRegisterEvent();
    }

    private void Show()
    {
        if(!_hasAwake)
            return;
        GetNode();
        ApplyShowType();
        Refresh();
    }

    private void GetNode()
    {
        if (_nodeID == NODE_DEFAULT_ID)
        {
            _node = null;
            return;
        }
        _node = RedPointManager.Instance.GetNodeByID(_nodeID);
        ParentID = _node?.parent?.ID ?? 0;
        if (_node == null)
        {
            Debug.LogError($"找不到RedPointNode!id:{_nodeID}");
        }
    }

    private void BindWidget()
    {
        _icon = transform.Find(ICON_PATH).GetComponent<Image>();
        if (_icon == null)
            Debug.LogError("找不到_icon");

        _count = transform.Find(TEXT_PATH).GetComponent<TMP_Text>();
        if (_count == null)
            Debug.LogError("找不到_count");
    }

    public void ResetToDefault()
    {
        NodeID = NODE_DEFAULT_ID;
    }
    
    private void RegisterEvent()
    {
        EventManager.Instance.Register<RedPointNode>(EventManager.EventName.RedPointDataChange, OnRedPointDataChange);
    }

    private void UnRegisterEvent()
    {
        EventManager.Instance.Unregister<RedPointNode>(EventManager.EventName.RedPointDataChange, OnRedPointDataChange);
    }

    private void OnRedPointDataChange(RedPointNode node)
    {
        if (node == _node)
        {
            Refresh();
        }
    }

    private void Refresh()
    {
        if (_node != null && _node.Valid)
        {
            var count = _node.MessageCount;
            CachedObj.transform.localScale = (count > 0) ? Vector3.one : Vector3.zero;//用scale替代setActive，避免在循环列表内单个被隐藏而全部错误显示的问题
            _count.text = count.ToString();

            showTag = _node.MessageCount;
            childCnt = _node.ChildCount;
        }
        else
        {
            CachedObj.transform.localScale = Vector3.zero;
        }
    }

    private void ApplyShowType()
    {
        switch (_showType)
        {
            case ERedPointShowType.None:
                _icon.gameObject.SetActive(false);
                _count.gameObject.SetActive(false);
                break;
            case ERedPointShowType.Icon:
                _icon.gameObject.SetActive(true);
                _count.gameObject.SetActive(false);
                break;
            case ERedPointShowType.Count:
                _icon.gameObject.SetActive(false);
                _count.gameObject.SetActive(true);
                break;
            case ERedPointShowType.IconAndCount:
                _icon.gameObject.SetActive(true);
                _count.gameObject.SetActive(true);
                break;
            default:
                break;
        }
    }

    #region GUI
    private void OnShowTypeChanged()
    {
        if (Application.isPlaying)
            ApplyShowType();
    }

    private void OnNodeIDChanged()
    {
        if (Application.isPlaying)
            Show();
    }
    #endregion
}