using DevExpress.XtraTreeList;
using DevExpress.XtraTreeList.Handler;
using DevExpress.XtraTreeList.Nodes;
using SqlSugar;
using System.Reflection;

namespace HStation.WinFrmUI.Basic
{
    public partial class SysCatalogManageMainPanel : DocumentPage
    {
        public SysCatalogManageMainPanel()
        {
            InitializeComponent();
            this.PageTitle.Caption = "分类管理";
            this.treeList1.InitialMultiColSettings();
            this.PageTitle.HeaderSvgImage = this.svgImage32[0];
            this.PageTitle.SvgImageSize = new Size(24, 24);
            this.typeTreeListCtrl2.FocusedChangedEvent += TypeTreeListCtrl2_FocusedChangedEvent;
        }

        private List<SysCatalogViewModel> _allBindingList;

        private Yw.BLL.SysCatalog _bll;

        private List<SysCatalogViewModel> _IndexList;

        public override void InitialDataSource()
        {
            this.typeTreeListCtrl2.SetBindingData();
            _bll = new Yw.BLL.SysCatalog();
        }

        //聚焦切换
        private async void TypeTreeListCtrl2_FocusedChangedEvent(long typeID)
        {
            _allBindingList = new List<SysCatalogViewModel>();
            var alllist = await _bll.GetByTypeID(typeID);
            _allBindingList.Clear();
            foreach (var item in alllist)
            {
                _allBindingList.Add(new SysCatalogViewModel(item));
            }
            this.catalogViewModelBindingSource.DataSource = _allBindingList;
            _IndexList = _allBindingList.Select(x => new SysCatalogViewModel(x)).ToList();
            //_IndexList.Sort((x, y) => x.ParentID.CompareTo(y.ParentID));
            this.catalogViewModelBindingSource.ResetBindings(false);
            this.treeList1.ExpandAll();
        }

        //添加
        private void BtnAdd_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            var dlg = new AddSysCatalogDlg();
            var typeID = this.typeTreeListCtrl2.GetCurrentID();
            if (typeID == 0)
                return;
            dlg.SetBindingData(typeID);
            dlg.ReloadDataEvent += async (rhs) =>
           {
               var id = await _bll.Insert(rhs);
               if (id > 0)
               {
                   var model = await _bll.GetByID(id);
                   _allBindingList.Add(new SysCatalogViewModel(model));
                   this.catalogViewModelBindingSource.ResetBindings(false);
                   return true;
               }
               return false;
           };
            dlg.ShowDialog();
        }

        //编辑
        private void barBtnEditPumpCurve_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            var dlg = new EditSysCatalogDlg();
            var vm = this.treeList1.GetCurrentViewModel(_allBindingList);
            if (vm == null)
            {
                MessageBoxHelper.ShowWarning("请选择数据行！");
                return;
            }
            dlg.SetBindingData(vm.ID);
            dlg.ReloadDataEvent += async (rhs) =>
            {
                if (await _bll.Update(rhs))
                {
                    vm.Reset(rhs);
                    this.catalogViewModelBindingSource.ResetBindings(false);
                    return true;
                }
                return false;
            };
            dlg.ShowDialog();
        }

        //删除
        private async void BtnDelete_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            var currentVm = this.treeList1.GetCurrentViewModel(_allBindingList);
            if (currentVm == null)
            {
                MessageBoxHelper.ShowWarning("请选择数据行！");
                return;
            }
            if (MessageBoxHelper.IsClickOk($"确认删除数据行?", "提示"))
                return;
            try
            {
                var result = await _bll.DeleteByID(currentVm.ID);
                if (result)
                {
                    _allBindingList.Remove(currentVm);
                    this.catalogViewModelBindingSource.ResetBindings(false);
                    MessageBoxHelper.ShowSuccess($"删除成功!");
                }
                else
                {
                    MessageBoxHelper.ShowError($"删除失败!");
                    return;
                }
            }
            catch (Yw.Dto.InternalException ex)
            {
                MessageBoxHelper.ShowError(ex.ErrorMsg);
            }
        }

        //相应属性编辑
        private async void BtnPropEdit_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            var currentVm = this.treeList1.GetCurrentViewModel(_allBindingList);
            if (currentVm != null)
            {
                var dlg = new SetSysPropForCatalogDlg();
                dlg.SetBindingData(currentVm.ID);
                dlg.ShowDialog();
            }
            else
            {
                MessageBoxHelper.ShowWarning("选择数据行!");
                return;
            }
        }

        /// <summary>
        ///设置父级
        /// </summary>
        private void barBtnUpdateParent_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            var currentVm = this.treeList1.GetCurrentViewModel(_allBindingList);
            if (currentVm == null)
            {
                MessageBoxHelper.ShowWarning("请选择数据行！");
                return;
            }
            var dlg = new UpdateCatalogParentDlg();
            dlg.SetBindingData(currentVm.TypeID, currentVm.ID, currentVm.ParentID);
            dlg.ReloadEvent += async (parentId) =>
            {
                var sortCode = GetDataCountByNodeID(parentId);
                var bol = await _bll.UpdateTreeSortCode(currentVm.ID, parentId, sortCode + 1);
                if (bol)
                {
                    this.InitialDataSource();
                    return true;
                }
                return false;
            };
            dlg.ShowDialog();
        }

        private TreeListNode currentDragNode = null;

        private async void treeList1_DragDrop(object sender, DragEventArgs e)
        {
            currentDragNode = (TreeListNode)e.Data.GetData(typeof(TreeListNode));
            var currentvm = GetViewModel(currentDragNode);
            var dragInsertPosition = AjustDirection(sender, e);
            var targetNode = GetTargetNode(e);
            var targetVm = GetViewModel(targetNode);
            var currentIndex = GetIndexOf(currentvm, _IndexList); //当前位置索引
            var targetIndex = GetIndexOf(targetVm, _IndexList);  //目标位置索引
            if (dragInsertPosition == DragInsertPosition.AsChild || targetVm == null || currentvm == null)
            {
                e.Effect = DragDropEffects.None;
                return;
            }
            if (dragInsertPosition == DragInsertPosition.After)
            {
                _IndexList.RemoveAt(currentIndex);
                _IndexList.Insert(targetIndex, currentvm);
            }
            else if (dragInsertPosition == DragInsertPosition.Before)
            {
                _IndexList.RemoveAt(currentIndex);
                _IndexList.Insert(targetIndex, currentvm);
            }
            if (currentvm.ParentID == targetVm.ParentID)
            {
                e.Effect = await SetTreeListSorter(currentvm.ParentID) ? DragDropEffects.Move : DragDropEffects.None;
                return;
            }
            e.Effect = DragDropEffects.None;
        }

        /// <summary>
        /// 获取拖动过程中的方向
        /// </summary>
        private DragInsertPosition AjustDirection(object sender, DragEventArgs e)
        {
            PropertyInfo pi = typeof(TreeList).GetProperty("Handler", BindingFlags.Instance | BindingFlags.NonPublic);
            TreeListHandler handler = (TreeListHandler)pi.GetValue(this.treeList1, null);
            return handler.StateData.DragInfo.DragInsertPosition;
        }

        private async Task<bool> SetTreeListSorter(long parentId)
        {
            var sortList = new List<Yw.Vmo.Sorter>();
            var targetList = _IndexList.Where(x => x.ParentID == parentId).ToList();
            int i = 1;
            foreach (var item in targetList)
            {
                sortList.Add(new Yw.Vmo.Sorter { ID = item.ID, SortCode = i });
                i++;
            }
            if (!await _bll.UpdateSorter(sortList))
            {
                TipFormHelper.ShowError("修改排序失败!");
                return false;
            }
            return true;
            //  this.catalogViewModelBindingSource.ResetBindings(false);
        }

        private TreeListNode GetTargetNode(DragEventArgs e)
        {
            var point = new Point(e.X, e.Y);
            var clientPoint = this.treeList1.PointToClient(point);
            var targetNode = this.treeList1.GetNodeAt(clientPoint);
            return targetNode;
        }

        private SysCatalogViewModel GetViewModel(TreeListNode node)
        {
            if (node == null)
                return default;
            var vm = this.treeList1.GetDataRecordByNode(node) as SysCatalogViewModel;
            return vm;
        }

        private void barCheckSorter_CheckedChanged(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            if (barCheckSorter.Checked)
            {
                this.treeList1.OptionsDragAndDrop.DragNodesMode = DragNodesMode.Single;
            }
            else
            {
                this.treeList1.OptionsDragAndDrop.DragNodesMode = DragNodesMode.None;
            }
        }

        //返回节点下所有子节点个数
        private int GetDataCountByNodeID(long nodeID)
        {
            TreeListNode node = treeList1.FindNodeByFieldValue("ID", nodeID);
            if (node == null)
            {
                return 0;
            }
            return node.Nodes.Count;
        }

        private CurrentTreeList GetTreeModel(TreeListNode node)
        {
            if (node == null)
                return default;

            var vm = GetViewModel(node);
            var model = new CurrentTreeList();
            model.ID = vm.ID;
            if (node.Nodes != null && node.Nodes.Any())
            {
                model.Children = new List<CurrentTreeList>();
                foreach (TreeListNode childNode in node.Nodes.Cast<TreeListNode>())
                {
                    var childModel = GetTreeModel(childNode);
                    model.Children.Add(childModel);
                }
            }
            return model;
        }

        private class CurrentTreeList
        {
            public CurrentTreeList()
            {
            }

            public long ID { get; set; }
            public List<CurrentTreeList> Children { get; set; }
        }

        private int GetIndexOf(SysCatalogViewModel vm, List<SysCatalogViewModel> dataSourse)
        {
            int i = 0;
            foreach (var item in dataSourse)
            {
                if (item.ID == vm.ID)
                {
                    return i;
                }
                i++;
            }
            return i;
        }
    }
}