namespace Yw.WpfUI.Hydro
{
    /// <summary>
    /// 绘制移除辅助类
    /// </summary>
    internal class DrawRemoveHelper : IDisposable
    {
        /// <summary>
        /// 
        /// </summary>
        public DrawRemoveHelper
            (
                HelixViewport3D viewport,
                DrawInitialHelper initialHelper
            )
        {
            _viewport = viewport;
            _initialHelper = initialHelper;
            Attach();
        }

        #region 事件集合

        /// <summary>
        /// 移除改变事件
        /// </summary>
        public event Action<List<VisualDraw3D>> RemoveChangedEvent;

        #endregion

        private readonly HelixViewport3D _viewport = null;//三维组件
        private readonly DrawInitialHelper _initialHelper = null;//初始化辅助类

        /// <summary>
        /// 是否初始化
        /// </summary>
        public bool Initialized
        {
            get { return _initialized; }
            private set { _initialized = value; }
        }
        private bool _initialized = false;

        //初始化
        private void Initialize()
        {
            if (!_initialHelper.Initialized)
            {
                return;
            }
            _initialized = true;
        }

        //处理初始化完成
        private void OnInitialCompleted()
        {
            Initialize();
        }

        /// <summary>
        /// 移除
        /// </summary>
        public bool Remove(string Id)
        {
            if (!Initialized)
            {
                return false;
            }
            if (string.IsNullOrEmpty(Id))
            {
                return false;
            }
            var visual3d = _initialHelper.GetVisual3D(Id);
            if (visual3d == null)
            {
                return false;
            }
            var list = new List<VisualDraw3D>();
            list.Add(visual3d);
            if (visual3d is NodeDraw3D node3d)
            {
                var link3ds = _initialHelper.GetConnectLink3D(node3d);
                if (link3ds != null && link3ds.Count > 0)
                {
                    foreach (var link3d in link3ds)
                    {
                        if (!list.Contains(link3d))
                        {
                            list.Add(link3d);
                        }
                    }
                }
            }
            var bol = _initialHelper.RemoveVisual3D(list);
            if (bol)
            {
                OnRemoveChanged(list);
            }
            return bol;
        }

        /// <summary>
        /// 移除
        /// </summary>
        public bool Remove(List<string> Ids)
        {
            if (!Initialized)
            {
                return false;
            }
            if (Ids == null || Ids.Count < 1)
            {
                return false;
            }
            var list = new List<VisualDraw3D>();
            foreach (var Id in Ids)
            {
                var visual3d = _initialHelper.GetVisual3D(Id);
                if (visual3d != null)
                {
                    if (!list.Contains(visual3d))
                    {
                        list.Add(visual3d);
                    }
                    if (visual3d is NodeDraw3D node3d)
                    {
                        var link3ds = _initialHelper.GetConnectLink3D(node3d);
                        if (link3ds != null && link3ds.Count > 0)
                        {
                            foreach (var link3d in link3ds)
                            {
                                if (!list.Contains(link3d))
                                {
                                    list.Add(link3d);
                                }
                            }
                        }
                    }
                }
            }
            var bol = _initialHelper.RemoveVisual3D(list);
            if (bol)
            {
                OnRemoveChanged(list);
            }
            return bol;
        }

        //处理移除改变
        private void OnRemoveChanged(List<VisualDraw3D> visual3ds)
        {
            if (visual3ds == null || visual3ds.Count < 1)
            {
                return;
            }
            this.RemoveChangedEvent?.Invoke(visual3ds);
        }

        //附加
        private void Attach()
        {
            _initialHelper.InitialCompletedEvent += OnInitialCompleted;
        }

        //分离
        private void Detach()
        {
            _initialHelper.InitialCompletedEvent -= OnInitialCompleted;
        }

        /// <summary>
        /// 释放
        /// </summary>
        public void Dispose()
        {
            Detach();
        }


    }
}