using Animancer.Editor;
using System;
using System.Collections;
using System.Collections.Generic;
using Unity.Plastic.Antlr3.Runtime.Tree;
using Unity.VisualScripting.Antlr3.Runtime.Tree;
using UnityEditor;
using UnityEditor.Experimental.GraphView;
using UnityEngine;
using UnityEngine.UIElements;

namespace Ether
{
    public class EtherNodeView : Node
    {
        public EtherNode node;

        public Port input;

        public Port output;

        public Action<EtherNodeView> OnNodeSelected;

        InspectorViewer inspectorViewer;

        public EtherNodeView(EtherNode node) : base("Assets/Ether/Package/EtherNode/Editor/UI/NodeView.uxml")
        {
            this.node = node;
            this.title = node.nodeName;
            this.viewDataKey = node.guid;
            style.left = node.position.x;
            style.top = node.position.y;
            CreateInputPorts();
            CreateOutputPorts();
            inspectorViewer = this.Q<InspectorViewer>();
            inspectorViewer.UpdateSelection(this);
            Button refreshBtn = new Button();
            refreshBtn.name = "RefreshBtn";
            refreshBtn.text = "刷新节点";
            refreshBtn.clicked += () =>
            {
                this.title = node.nodeName;
            };
            inspectorViewer.Add(refreshBtn);
        }

        /// <summary>
        /// 右键点击菜单
        /// </summary>
        public override void BuildContextualMenu(ContextualMenuPopulateEvent evt)
        {
            evt.menu.ClearItems();
            EtherNodeMenuNameAttribute menuNameAttr = node.GetType().GetAttribute<EtherNodeMenuNameAttribute>();

            if (menuNameAttr != null)
            {
                evt.menu.AppendAction($"删除{menuNameAttr.menuName}", (a) => { DeleteNode(); });
            }
            // 阻止事件冒泡
            evt.StopPropagation();

        }

        private void DeleteNode()
        {
            EtherNodeGraphViewer graph = GetFirstAncestorOfType<EtherNodeGraphViewer>();
            if (graph != null)
            {
                graph.RemoveElement(this);
                graph.Graph.DeleteNode(node);
            }
        }

        private void CreateInputPorts()
        {
            Type nodeType = node.GetType();
            if (nodeType.IsSubclassOf(typeof(EtherMultiNode)))
            {
                input = InstantiatePort(Orientation.Vertical, Direction.Input, Port.Capacity.Multi, typeof(bool));
            }
            else if (nodeType.IsSubclassOf(typeof(EtherSingleNode)))
            {
                input = InstantiatePort(Orientation.Vertical, Direction.Input, Port.Capacity.Single, typeof(bool));
            }
            else
            {
                input = InstantiatePort(Orientation.Vertical, Direction.Input, Port.Capacity.Multi, typeof(bool));
            }
            if (input != null)
            {
                input.portName = "";
                input.style.flexDirection = FlexDirection.Column;
                inputContainer.Add(input);

            }
        }
        private void CreateOutputPorts()
        {
            Type nodeType = node.GetType();
            if (nodeType.IsSubclassOf(typeof(EtherMultiNode)))
            {
                output = InstantiatePort(Orientation.Vertical, Direction.Output, Port.Capacity.Multi, typeof(bool));
            }
            else if (nodeType.IsSubclassOf(typeof(EtherSingleNode)))
            {
                output = InstantiatePort(Orientation.Vertical, Direction.Output, Port.Capacity.Single, typeof(bool));
            }
            else
            {
                output = InstantiatePort(Orientation.Vertical, Direction.Output, Port.Capacity.Multi, typeof(bool));
            }
            if (output != null)
            {
                output.portName = "";
                output.style.flexDirection = FlexDirection.ColumnReverse;
                outputContainer.Add(output);

            }
        }

        public override void OnSelected()
        {
            base.OnSelected();
            OnNodeSelected?.Invoke(this);
            Selection.activeObject = node;
        }

        public override void SetPosition(Rect newPos)
        {
            Undo.RecordObject(node, "Node Tree (SetPosition)");
            base.SetPosition(newPos);
            node.position.x = newPos.x;
            node.position.y = newPos.y;
            EditorUtility.SetDirty(node);
        }

        //public void SetNodeState()
        //{
        //    RemoveFromClassList("running");
        //    if (Application.isPlaying)
        //    {
        //        switch (node.state)
        //        {
        //            case EtherNode.State.Running:
        //                if (node.started)
        //                {
        //                    AddToClassList("running");
        //                }
        //                break;
        //            case EtherNode.State.Waiting:
        //                break;
        //            default:
        //                break;
        //        }
        //    }
        //}
    }
}