using System.Linq;

using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using Autodesk.Revit.UI.Selection;

namespace Szmedi.RvKits.DisplayTools
{
    #region 隐藏对象

    internal class HideElementsHandler : IExternalEventHandler
    {
        public void Execute(UIApplication app)
        {
            //RevitCommandId cmdId = RevitCommandId.LookupPostableCommandId(PostableCommand.HideElements);
            //app.PostCommand(cmdId);
            UIDocument uidoc = app.ActiveUIDocument;
            Document doc = app.ActiveUIDocument.Document;
            Selection selection = uidoc.Selection;
            ICollection<ElementId> selectedIds = selection.GetElementIds();
            using Transaction trans = new(doc);
            trans.Start("隐藏对象");
            uidoc.Document.ActiveView.HideElements(selectedIds);
            trans.Commit();
        }

        public string GetName()
        {
            return "隐藏对象";
        }
    }

    #endregion 隐藏对象

    #region 隐藏类别

    internal class HideCategoriesHandler : IExternalEventHandler
    {
        public void Execute(UIApplication app)
        {
            //RevitCommandId cmdId = RevitCommandId.LookupPostableCommandId(PostableCommand.HideCategory);
            //app.PostCommand(cmdId);
            UIDocument uidoc = app.ActiveUIDocument;
            Document doc = app.ActiveUIDocument.Document;
            //得到选择的对象
            Selection selection = uidoc.Selection;
            //得到选择对象的ID
            ICollection<ElementId> SelectedIds = selection.GetElementIds();
            Element seledElement = null;
            using Transaction trans = new(doc);
            trans.Start("隐藏类别");
            //未选择对象时
            if (0 == SelectedIds.Count)
            {
                //TaskDialog.Show("提示", "请选择单个或多个对象");
            }
            else
            {
                foreach (ElementId elemId in SelectedIds)
                {
                    seledElement = doc.GetElement(elemId);

                    Category category = seledElement.Category;
                    //下方已经应用过滤器，此处新建收集器避免遍历时使用下方已赋值的过滤器
                    FilteredElementCollector collector = new(doc);

                    BuiltInCategory enumCategory = (BuiltInCategory)category.Id.IntegerValue;
                    collector.OfCategory(enumCategory);
                    //相当于在VV菜单中关闭类别显示
                    //uidoc.doc.ActiveView.SetCategoryHidden(category.Id,true);

                    uidoc.Document.ActiveView.HideElements(collector.ToElementIds());
                }
            }

            trans.Commit();
        }

        public string GetName()
        {
            return "隐藏类别";
        }
    }

    #endregion 隐藏类别

    #region 隔离对象

    internal class IsolateElementsHandler : IExternalEventHandler
    {
        public void Execute(UIApplication app)
        {
            UIDocument uidoc = app.ActiveUIDocument;
            Document doc = app.ActiveUIDocument.Document;
            Selection selection = uidoc.Selection;
            ICollection<ElementId> selectedIds = selection.GetElementIds();

            ElementClassFilter instanceFitler = new(typeof(FamilyInstance));
            ElementClassFilter hostFilter = new(typeof(HostObject));
            LogicalOrFilter orFilter = new(instanceFitler, hostFilter);

            FilteredElementCollector collector = new FilteredElementCollector(doc).WherePasses(orFilter);

            collector.Excluding(selectedIds);
            using Transaction trans = new(doc);
            trans.Start("隔离对象");
            if (selectedIds.Count == 0)
            {
            }
            else
            {
                uidoc.ActiveView.HideElements(collector.ToElementIds());

                trans.Commit();
            }
        }

        public string GetName()
        {
            return "隔离对象";
        }
    }

    #endregion 隔离对象

    #region 隔离类别

    internal class IsolateCategoriesHandler : IExternalEventHandler
    {
        public void Execute(UIApplication app)
        {
            UIDocument uidoc = app.ActiveUIDocument;
            Document doc = app.ActiveUIDocument.Document;
            //得到选择的对象
            Selection selection = uidoc.Selection;
            //得到选择对象的ID
            ICollection<ElementId> selectedIds = selection.GetElementIds();

            ElementClassFilter instanceFitler = new(typeof(FamilyInstance));
            ElementClassFilter hostFilter = new(typeof(HostObject));
            LogicalOrFilter andFilter = new(instanceFitler, hostFilter);

            FilteredElementCollector collector = new FilteredElementCollector(doc).WherePasses(andFilter);
            Element seledElement = null;
            using Transaction trans = new(doc);
            trans.Start("隔离类别");
            //未选择对象时
            if (selectedIds.Count == 0)
            {
                //TaskDialog.Show("提示", "请选择单个或多个对象");
            }
            else
            {
                uidoc.ActiveView.HideElements(collector.ToElementIds());
                foreach (ElementId elemId in selectedIds)
                {
                    seledElement = doc.GetElement(elemId);

                    Category category = seledElement.Category;

                    FilteredElementCollector collection = new(doc);

                    BuiltInCategory enumCategory = (BuiltInCategory)category.Id.IntegerValue;

                    collection.OfCategory(enumCategory).ToElementIds();

                    uidoc.Document.ActiveView.UnhideElements(collection.ToElementIds());
                }
            }

            trans.Commit();
        }

        public string GetName()
        {
            return "隔离类别";
        }
    }

    #endregion 隔离类别

    #region 显示隐藏

    internal class RevealHiddenHandler : IExternalEventHandler
    {
        public void Execute(UIApplication app)
        {
            Document doc = app.ActiveUIDocument.Document;

            ElementClassFilter instanceFilter = new(typeof(FamilyInstance));
            FilteredElementCollector collection = new(doc);

            doc.Invoke(
                ts =>
                {
                    try
                    {
                        //if (doc.IsFamilyDocument)
                        //{
                        //    var col = new FilteredElementCollector(doc).WhereElementIsNotElementType();
                        //    var views = new FilteredElementCollector(doc).OfClass(typeof(View)).WhereElementIsNotElementType().Cast<View>().ToList();
                        //    Transaction transaction = new Transaction(doc, "显示所有隐藏元素");
                        //    transaction.Start();
                        //    foreach (var v in views)
                        //    {
                        //        foreach (Element item in col)
                        //        {
                        //            if (item.IsHidden(v))
                        //            {
                        //                v.UnhideElements([item.Id]);
                        //            }
                        //        }
                        //    }
                        //    transaction.Commit();
                        //}
                        //else
                        //{
                        //    ElementClassFilter hostFilter = new(typeof(HostObject));
                        //    //逻辑过滤器
                        //    LogicalOrFilter orFilter = new(instanceFilter, hostFilter);
                        //    //收集器应用过滤器（未应用过滤器，收集器会报错）
                        //    collection.WherePasses(orFilter);
                        //}
                        //foreach (Element item in collection)
                        //{
                        //    if (item.IsHidden(doc.ActiveView))
                        //    {
                        //        doc.ActiveView.UnhideElements([item.Id]);
                        //    }
                        //}
                        if (doc.IsFamilyDocument)
                        {
                            var col = new FilteredElementCollector(doc).WhereElementIsNotElementType();
                            var views = new FilteredElementCollector(doc).OfClass(typeof(View)).WhereElementIsNotElementType().Cast<View>().ToList();
                            Transaction transaction = new Transaction(doc, $"显示隐藏");
                            transaction.Start();
                            foreach (var v in views)
                            {
                                foreach (Element item in col)
                                {
                                    if (item.IsHidden(v))
                                    {
                                        v.UnhideElements([item.Id]);
                                    }
                                }
                            }
                            transaction.Commit();
                        }
                        else
                        {
                            var col = new FilteredElementCollector(doc).WhereElementIsNotElementType();
                            Transaction transaction = new Transaction(doc, $"显示隐藏");
                            transaction.Start();
                            foreach (Element item in col)
                            {
                                if (item.IsHidden(doc.ActiveView))
                                {
                                    doc.ActiveView.UnhideElements([item.Id]);
                                }
                            }
                            transaction.Commit();
                        }
                        return;
                    }
                    catch (System.Exception)
                    {

                        throw;
                    }
                },
                "显示隐藏");

        }

        public string GetName()
        {
            return "显示隐藏";
        }
    }

    #endregion 显示隐藏

    #region 对象剖切

    internal class ElementsSectionHandler : IExternalEventHandler
    {
        public void Execute(UIApplication app)
        {
            UIDocument uidoc = app.ActiveUIDocument;
            Document doc = uidoc.Document;
            //Selection selection = uidoc.Selection;
            //View view = doc.ActiveView;
            //Element elem = doc.GetElement(uidoc.Selection.PickObject(ObjectType.Element, "请选择一个构件"));
            //if (view is View3D)
            //{
            //    BoundingBoxXYZ box = elem.get_BoundingBox(null);
            //}
            //else
            //{
            //}
            //Transaction trans = new Transaction(doc, "剖面框");
            //trans.Start();
            //view.SetSectionBox(box);

            //trans.Commit();
            //uidoc.ActiveView = view3D;
            RevitCommandId cmdId = RevitCommandId.LookupPostableCommandId(PostableCommand.SelectionBox);
            app.PostCommand(cmdId);
        }

        public string GetName()
        {
            return "对象剖切";
        }
    }

    #endregion 对象剖切

    #region 锁定对象

    internal class PinElementsHandler : IExternalEventHandler
    {
        public void Execute(UIApplication app)
        {
            //RevitCommandId cmdId = RevitCommandId.LookupPostableCommandId(PostableCommand.Pin);
            //app.PostCommand(cmdId);
            UIDocument uidoc = app.ActiveUIDocument;
            Document doc = app.ActiveUIDocument.Document;
            Selection selection = uidoc.Selection;
            ICollection<ElementId> selectedIds = selection.GetElementIds();
            using Transaction trans = new(doc);
            trans.Start("锁定对象");
            if (selectedIds.Count == 0)
            {
            }
            else
            {
                foreach (ElementId eleId in selectedIds)
                {
                    Element ele = doc.GetElement(eleId);
                    if (ele.Pinned == false)
                    {
                        ele.Pinned = true;
                    }
                }
            }

            trans.Commit();
        }

        public string GetName()
        {
            return "锁定对象";
        }
    }

    #endregion 锁定对象

    #region 解锁全部

    internal class UnpinAllElementsHandler : IExternalEventHandler
    {
        public void Execute(UIApplication app)
        {
            Document doc = app.ActiveUIDocument.Document;
            UIDocument uidoc = app.ActiveUIDocument;

            ElementClassFilter instanceFitler = new(typeof(FamilyInstance));
            ElementClassFilter hostFilter = new(typeof(HostObject));

            LogicalOrFilter andFilter = new(instanceFitler, hostFilter);

            FilteredElementCollector collector = new FilteredElementCollector(doc).WherePasses(andFilter);

            ICollection<ElementId> elesIds = [];

            View view = uidoc.Document.ActiveView;
            using Transaction t = new(doc);
            t.Start("解锁全部");
            foreach (Element elem in collector)
            {
                if (elem.Pinned)
                {
                    elem.Pinned = false;
                }
            }

            t.Commit();
        }

        public string GetName()
        {
            return "解锁全部";
        }
    }

    #endregion 解锁全部

    #region 锁定类别

    internal class PinCategoriesHandler : IExternalEventHandler
    {
        public void Execute(UIApplication app)
        {
            UIDocument uidoc = app.ActiveUIDocument;
            Document doc = app.ActiveUIDocument.Document;
            //得到选择的对象
            Selection selection = uidoc.Selection;
            //得到选择对象的ID
            ICollection<ElementId> SelectedIds = selection.GetElementIds();

            Element seledElement = null;
            using Transaction trans = new(doc);
            trans.Start("锁定类别");
            //未选择对象时
            if (0 == SelectedIds.Count)
            {
                //TaskDialog.Show("提示", "请选择单个或多个对象");
            }
            else
            {
                foreach (ElementId elemId in SelectedIds)
                {
                    seledElement = doc.GetElement(elemId);

                    Category category = seledElement.Category;

                    FilteredElementCollector collector = new(doc);

                    BuiltInCategory enumCategory = (BuiltInCategory)category.Id.IntegerValue;
                    collector.OfCategory(enumCategory);

                    foreach (Element elem in collector)
                    {
                        if (elem.Pinned == false)
                        {
                            elem.Pinned = true;
                        }
                    }
                }
            }

            trans.Commit();
        }

        public string GetName()
        {
            return "锁定类别";
        }
    }

    #endregion 锁定类别

    #region 解锁类别

    internal class UnpinCategoriesHandler : IExternalEventHandler
    {
        public void Execute(UIApplication app)
        {
            UIDocument uidoc = app.ActiveUIDocument;
            Document doc = app.ActiveUIDocument.Document;
            //得到选择的对象
            Selection selection = uidoc.Selection;
            //得到选择对象的ID
            ICollection<ElementId> SelectedIds = selection.GetElementIds();

            Element seledElement = null;
            using Transaction trans = new(doc);
            trans.Start("解锁类别");
            //未选择对象时
            if (0 == SelectedIds.Count)
            {
                //TaskDialog.Show("提示", "请选择单个或多个对象");
            }
            else
            {
                foreach (ElementId elemId in SelectedIds)
                {
                    seledElement = doc.GetElement(elemId);

                    Category category = seledElement.Category;

                    FilteredElementCollector collector = new(doc);

                    BuiltInCategory enumCategory = (BuiltInCategory)category.Id.IntegerValue;
                    collector.OfCategory(enumCategory);

                    foreach (Element elem in collector)
                    {
                        if (elem.Pinned)
                        {
                            elem.Pinned = false;
                        }
                    }
                }
            }

            trans.Commit();
        }

        public string GetName()
        {
            return "解锁类别";
        }
    }

    #endregion 解锁类别
}