using NUnit.Framework;
using System;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.UI.Extensions;
using XED.Manage;
using XRLib.UI;

namespace XED.UI
{
    public class Canvas_Component : CanvasBase
    {
        public UILineRenderer prf_LineRenderer;
        public UILineGroupRenderer groupliner;

        public void Connect(ConnectionHandlePoint p1, ConnectionHandlePoint p2)
        {
            groupliner = FindFirstObjectByType<UILineGroupRenderer>();
            groupliner.AddPoints(p1.transform, p2.transform);
            //var line = Instantiate(prf_LineRenderer, transform);
            //var p1Pos = new Vector2(p1.transform.position.x + rectTransform.rect.position.x , p1.transform.position.y + rectTransform.rect.position.y);
            //var p2Pos = new Vector2(p2.transform.position.x + rectTransform.rect.position.x , p2.transform.position.y + rectTransform.rect.position.y);
            //line.Points = new Vector2[] { p1Pos, p2Pos };
            //line.SetAllDirty();
            //line.transform.SetAsFirstSibling();
        }

        List<(ConnectionHandlePoint, ConnectionHandlePoint)> connections = new();
        List<ConnectionHandlePoint> connection = new();


        internal void Connect(ConnectionHandlePoint connectionHandlePoint)
        {
            connection.Add(connectionHandlePoint);
            connectionHandlePoint.GetComponent<Image>().color = Color.white;

            if (connection.Count == 2)
            {
                connection[0].GetComponent<Image>().color = Color.black;
                connection[1].GetComponent<Image>().color = Color.black;
                if (connections.Contains((connection[0], connection[1])))
                {
                    connections.Remove((connection[0], connection[1]));
                    connections.Remove((connection[1], connection[0]));
                    groupliner.Remove(connection[0].transform, connection[1].transform);
                    connection.Clear();
                    return;
                }

                connections.Add((connection[0], connection[1]));
                connections.Add((connection[1], connection[0]));
                Connect(connection[0], connection[1]);
                connection.Clear();
            }
        }
    }
}