using System.ComponentModel;
using System.Diagnostics;
using System.Windows;
using System.Windows.Data;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using Nice3point.Revit.Toolkit.External.Handlers;
using ShrlAlgoToolkit.Core.Assists;


namespace ShrlAlgoToolkit.RevitAddins.RvView;

public partial class ViewManagerViewModel : ObservableObject
{
    [ObservableProperty]
    [NotifyCanExecuteChangedFor(nameof(RevitAddins.RvView.ViewManagerViewModel.CopyAsDependentCommand))]
    public partial bool CanCopyAsDependent { get; set; }

    [ObservableProperty]
    [NotifyCanExecuteChangedFor(nameof(RevitAddins.RvView.ViewManagerViewModel.CopyOnlyCommand))]
    public partial bool CanCopyOnly { get; set; }

    [ObservableProperty]
    [NotifyCanExecuteChangedFor(nameof(RevitAddins.RvView.ViewManagerViewModel.CopyWithDetailCommand))]
    public partial bool CanCopyWidthDetail { get; set; }

    [ObservableProperty]
    public partial ICollectionView FilteredList { get; set; }

    private readonly ActionEventHandler handler;

    [ObservableProperty]
    public partial string SearchText { get; set; }

    private List<ViewManagerModel> selectedItems;

    [ObservableProperty]
    public partial List<View> ViewTemplates { get; set; }

    public ViewManagerViewModel(UIApplication uiapp)
    {
        //IsActive = true;
        ViewCollection = uiapp.ActiveUIDocument.Document
            .OfClass<View>()
            .Cast<View>()
            .Where(
                v =>
                    v.GetTypeId() != ElementId.InvalidElementId
                    && v is not ViewSchedule { IsTitleblockRevisionSchedule: true }
            )
            .OrderBy(v => v.ViewType)
            .ThenBy(v => v.Name)
            .Select(v => new ViewManagerModel(v))
            .ToList();
        //ViewTemplates = doc.OfCollector<View>().Cast<View>().Where(v => v.IsTemplate).ToList();
        //ViewTemplates.Insert(0,View);
        //var models = (from v in views let model = new ViewManagerModel(v) select model).ToList();

        FilteredList = CollectionViewSource.GetDefaultView(ViewCollection);
        handler = new ActionEventHandler();
        //ViewCollection.ListChanged += ViewCollection_ListChanged;
    }

    //[RelayCommand]
    //private void ActiveView(System.Collections.IList items)
    //{
    //    if (items == null || items.Count == 0)
    //    {
    //        return;
    //    }
    //    var UiDocument = uiapp.ActiveUIDocument;
    //    var list = items.Cast<ViewManagerModel>().ToList();
    //    try
    //    {
    //        foreach (var model in list)
    //        {
    //            UiDocument.ActiveView = model.View;
    //        }
    //    }
    //    catch (Exception e)
    //    {
    //        Console.WriteLine(e);
    //        throw;
    //    }
    //}
    [RelayCommand]
    private void Confirm(System.Collections.IList items)
    {
        if (items == null || items.Count == 0)
        {
            return;
        }
        var list = items.Cast<ViewManagerModel>().ToList();
        handler.Raise(uiapp =>
        {
            var doc = uiapp.ActiveUIDocument.Document;
            doc.Invoke(
                _ =>
                {
                    foreach (var model in list)
                    {
                        var view = model.View;
                        if (view == null)
                        {
                            continue;
                        }

                        try
                        {
                            view.Name = model.Name;
                        }
                        catch (Exception)
                        {
                            MessageBox.Show("名称未修改\n\r修改的视图名称不能包含：\n\r\\:{}[]|;<>?`~\n\r及其他不能打印的字符或与其他视图重名", "提示");
                        }

                        view.ViewTemplateId = ElementId.InvalidElementId;
                        if (model.IsDisplayStyleEditable)
                        {
                            view.DisplayStyle = (Autodesk.Revit.DB.DisplayStyle)model.DisplayStyle;
                        }

                        if (view.HasViewDiscipline())
                        {
                            Debug.Assert(model.Discipline != null, "model.Discipline != null");
                            view.Discipline = (Autodesk.Revit.DB.ViewDiscipline)model.Discipline;
                        }

                        if (model.IsScaleEditable)
                        {
                            view.Scale = model.Scale;
                        }

                        if (model.IsDetailLevelEditable)
                        {
                            Debug.Assert(model.DetailLevel != null, "model.DetailLevel != null");
                            view.DetailLevel = (Autodesk.Revit.DB.ViewDetailLevel)model.DetailLevel;
                        }

                        if (model.ViewTemplate != null && view.IsValidViewTemplate(model.ViewTemplate.Id))
                        {
                            view.ViewTemplateId = model.ViewTemplate.Id;
                        }

                        if (model.IsSheetNameEditable)
                        {
                            view.get_Parameter(BuiltInParameter.VIEW_DESCRIPTION).Set((string)model.SheetName);
                        }

                        if (model.IsSheetNumberEditable && view is ViewSheet sheet)
                        {
                            sheet.SheetNumber = model.SheetNumber;
                        }
                    }
                },
                "修改视图属性"
            );
        });
    }

    [RelayCommand(CanExecute = nameof(RevitAddins.RvView.ViewManagerViewModel.CanCopyAsDependent))]
    private void CopyAsDependent(System.Collections.IList items)
    {
        if (items == null || items.Count == 0)
        {
            return;
        }
        var list = items.Cast<ViewManagerModel>().ToList();
        handler.Raise(uiapp =>
        {
            var doc = uiapp.ActiveUIDocument.Document;
            doc.Invoke(
                _ =>
                {
                    try
                    {
                        foreach (var model in list)
                        {
                            var view = model.View;
                            var viewCopy = view.CopyWithOption(ViewDuplicateOption.AsDependent);
                            ViewCollection.Insert(ViewCollection.IndexOf(model) + 1, new ViewManagerModel(viewCopy));
                        }
                    }
                    catch (Exception e)
                    {
                        LogAssist.ToLog(e.Message);
                    }
                },
                "复制视图"
            );
        });
    }

    [RelayCommand(CanExecute = nameof(RevitAddins.RvView.ViewManagerViewModel.CanCopyOnly))]
    private void CopyOnly(System.Collections.IList items)
    {
        if (items == null || items.Count == 0)
        {
            return;
        }
        var list = items.Cast<ViewManagerModel>().ToList();
        handler.Raise(uiapp =>
        {
            var doc = uiapp.ActiveUIDocument.Document;
            doc.Invoke(
                _ =>
                {
                    try
                    {
                        foreach (var model in list)
                        {
                            var view = model.View;
                            var viewCopy = view.CopyWithOption(ViewDuplicateOption.Duplicate);
                            ViewCollection.Insert(ViewCollection.IndexOf(model) + 1, new ViewManagerModel(viewCopy));
                        }
                    }
                    catch (Exception e)
                    {
                        LogAssist.ToLog(e.Message);
                    }
                },
                "复制视图"
            );
        });
    }

    [RelayCommand(CanExecute = nameof(RevitAddins.RvView.ViewManagerViewModel.CanCopyWidthDetail))]
    private void CopyWithDetail(System.Collections.IList items)
    {
        if (items == null || items.Count == 0)
        {
            return;
        }
        var list = items.Cast<ViewManagerModel>().ToList();
        handler.Raise(uiapp =>
        {
            var doc = uiapp.ActiveUIDocument.Document;
            doc.Invoke(
                _ =>
                {
                    try
                    {
                        foreach (var model in list)
                        {
                            var view = model.View;
                            var viewCopy = view.CopyWithOption(ViewDuplicateOption.WithDetailing);
                            ViewCollection.Insert(ViewCollection.IndexOf(model) + 1, new ViewManagerModel(viewCopy));
                        }
                    }
                    catch (Exception e)
                    {
                        LogAssist.ToLog(e.Message);
                    }
                },
                "复制视图"
            );
        });
    }

    [RelayCommand]
    private void Delete(System.Collections.IList items)
    {
        if (items == null || items.Count == 0)
        {
            return;
        }
        var list = items.Cast<ViewManagerModel>().ToList();
        //ViewCollection.RemoveAll(v => list.Contains(v));
        handler.Raise(uiapp =>
        {
            var doc = uiapp.ActiveUIDocument.Document;
            doc.Invoke(
                _ =>
                {
                    foreach (var model in list)
                    {
                        try
                        {
                            //dg.Items.Remove(model);
                            var opened = uiapp.ActiveUIDocument
                                .GetOpenUIViews()
                                .FirstOrDefault(ui => ui.ViewId == model.View.Id);
                            if (opened == null)
                            {
                                ViewCollection.Remove(model);
                                doc.Delete(model.View.Id);
                            }
                        }
                        catch (Exception e)
                        {
                            MessageBox.Show("视图不可删除");
                            e.Message.ToLog();
                        }
                    }
                },
                "删除视图"
            );
            //dg.ItemsSource = null;
            //dg.ItemsSource = ViewCollection;
        });
    }

    [RelayCommand]
    void Search()
    {
        FilteredList.Filter = o =>
        {
            if (string.IsNullOrEmpty(SearchText))
            {
                return true;
            }
            var item = o as ViewManagerModel;
            return item.Name.Contains(SearchText) || EnumAssist.GetAttribute<DescriptionAttribute>(item.UserViewType).Description.Contains(SearchText);
        };
    }

    [RelayCommand]
    private void RemoveTemplate(System.Collections.IList items)
    {
        if (items != null || items.Count == 0)
        {
            return;
        }
        handler.Raise(_ =>
        {
            var list = items.Cast<ViewManagerModel>().ToList();
            foreach (var model in list)
            {
                model.ViewTemplate = null;
            }
        });
    }

    [RelayCommand]
    private void UpdateExecute(System.Collections.IList items)
    {
        if (items == null || items.Count == 0)
        {
            return;
        }
        selectedItems = items.Cast<ViewManagerModel>().ToList();
        //更新可用性字段
        CanCopyOnly = selectedItems.All(m => m.View.CanViewBeDuplicated(ViewDuplicateOption.Duplicate));
        CanCopyWidthDetail = selectedItems.All(m => m.View.CanViewBeDuplicated(ViewDuplicateOption.WithDetailing));
        CanCopyAsDependent = selectedItems.All(m => m.View.CanViewBeDuplicated(ViewDuplicateOption.AsDependent));
        //CommandManager.InvalidateRequerySuggested();
        //通知命令按钮可用性更新
        //CopyOnly.NotifyCanExecuteChanged();
        //CopyWithDetail.NotifyCanExecuteChanged();
        //CopyAsDependent.NotifyCanExecuteChanged();
    }

    private void ViewCollection_ListChanged(object sender, ListChangedEventArgs e)
    {
        if (e.ListChangedType == ListChangedType.ItemChanged)
        {
            var changedItem = ViewCollection[e.NewIndex];
            //var changedItem1 = ViewCollection[e.OldIndex];
            var x = e.PropertyDescriptor;
            foreach (var item in selectedItems)
            {
                var prop = item.GetType().GetProperty(x.Name, x.PropertyType);
                var v = x.GetValue(changedItem);
                prop.SetValue(item, v);
            }
            handler.Raise(uiapp =>
            {
                var doc = uiapp.ActiveUIDocument.Document;
                doc.Invoke(
                    _ =>
                    {
                        foreach (var model in selectedItems)
                        {
                            var view = model.View;
                            if (view == null)
                            {
                                continue;
                            }

                            try
                            {
                                view.Name = model.Name;
                            }
                            catch (Exception)
                            {
                                MessageBox.Show("名称未修改\n\r修改的视图名称不能包含：\n\r\\:{}[]|;<>?`~\n\r及其他不能打印的字符", "提示");
                            }

                            view.ViewTemplateId = ElementId.InvalidElementId;
                            if (model.IsDisplayStyleEditable)
                            {
                                view.DisplayStyle = (Autodesk.Revit.DB.DisplayStyle)model.DisplayStyle;
                            }

                            if (view.HasViewDiscipline())
                            {
                                Debug.Assert(model.Discipline != null, "model.Discipline != null");
                                view.Discipline = (Autodesk.Revit.DB.ViewDiscipline)model.Discipline;
                            }

                            if (model.IsScaleEditable)
                            {
                                view.Scale = model.Scale;
                            }

                            if (model.IsDetailLevelEditable)
                            {
                                Debug.Assert(model.DetailLevel != null, "model.DetailLevel != null");
                                view.DetailLevel = (Autodesk.Revit.DB.ViewDetailLevel)model.DetailLevel;
                            }

                            if (model.ViewTemplate != null && view.IsValidViewTemplate(model.ViewTemplate.Id))
                            {
                                view.ViewTemplateId = model.ViewTemplate.Id;
                            }

                            if (model.IsSheetNameEditable)
                            {
                                view.get_Parameter(BuiltInParameter.VIEW_DESCRIPTION).Set((string)model.SheetName);
                            }

                            if (model.IsSheetNumberEditable && view is ViewSheet sheet)
                            {
                                sheet.SheetNumber = model.SheetNumber;
                            }
                        }
                    },
                    "修改视图属性"
                );
            });
        }
    }

    //public void Receive(ViewMessage message)
    //{
    //    if (selectedItems==null||!selectedItems.Any())
    //    {
    //        return;
    //    }
    //}

    //[ObservableProperty]
    //ViewManagerModel modelPropertyChanged;

    //public void Receive(PropertyChangedMessage<ViewManagerModel> message)
    //{
    //    //ModelPropertyChanged = message.NewValue;
    //}

    public List<ViewManagerModel> ViewCollection { get; set; }
}