using System.Linq;
using System.Text;
using System.Windows;

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

using Nice3point.Revit.Toolkit.External;

namespace Szmedi.RvKits.ModelManager
{

    [Transaction(TransactionMode.Manual)]

    public class MoveModelCmd : ExternalCommand
    {
        private static bool IsSketchedStairsRun(Stairs stairs)
        {
            var id = stairs.GetStairsRuns().FirstOrDefault();
            if (id == null) return false;
            var run = stairs.Document.GetElement(id) as StairsRun;
            return run?.StairsRunStyle == StairsRunStyle.Sketched;
        }
        public override void Execute()
        {
            //基于面主体的图元，不进行移动
            var elementsBaseFace = Document.OfClass<FamilyInstance>()
                .Where(
                    e => e is FamilyInstance ins &&
                        ins.Symbol.Family.FamilyPlacementType == FamilyPlacementType.WorkPlaneBased &&
                        ins.Host == null &&
                        ins.HostFace == null);
            var ids = elementsBaseFace.Select(e => e.Id).ToList();

            var collector = Document
                .OfParentModelCollector();

            if (ids.Count > 0)
            {
                collector = collector.Excluding(ids);

            }
            var elems = collector.Where(
                       element => element.GetType() != typeof(RevitLinkInstance) &&
                           element.GroupId == ElementId.InvalidElementId)
                   .ToList();
            if (elems == null)
            {
                MessageBox.Show("没有找到模型元素", "错误");
                return;
            }
            //组
            var groups = Document.QueryElementsByType<Group>().WhereElementIsNotElementType().ToElements();
            //var basePoints = doc.QueryElementsByType<BasePoint>().ToElements();
            //标高
            var levels = Document.QueryElementsByType<Level>().WhereElementIsNotElementType().ToElements();
            //线条
            var modelCurve = new FilteredElementCollector(Document).OfCategory(BuiltInCategory.OST_Lines).WhereElementIsNotElementType().ToElements();
            //视图
            var viewers = Document.QueryElementsByCategory(BuiltInCategory.OST_Viewers).WhereElementIsNotElementType().ToElements();
            //常规注释族
            var annotations = Document.QueryElementsByCategory(BuiltInCategory.OST_GenericAnnotation).WhereElementIsNotElementType().ToElements();
            //立面
            var elevs = Document.QueryElementsByCategory(BuiltInCategory.OST_Elev).WhereElementIsNotElementType().ToElements();
            //轴网
            var grids = Document.QueryElementsByType<Grid>().WhereElementIsNotElementType().ToElements();
            //尺寸标注
            var dims = Document.QueryElementsByType<Dimension>().WhereElementIsNotElementType().ToElements();
            //文字
            var texts = Document.QueryElementsByType<TextNote>().WhereElementIsNotElementType().ToElements();
            //标记
            var tags = Document.QueryElementsByType<IndependentTag>().WhereElementIsNotElementType().ToElements();
            //填充
            var fillRegions = Document.QueryElementsByType<FilledRegion>().WhereElementIsNotElementType().ToElements();
            //洞口
            var openings = Document.QueryElementsByType<Opening>().Cast<Opening>().Where(open => open.Host is Floor).ToList();
            var importInstances = Document.QueryElementsByType<ImportInstance>().Cast<ImportInstance>().ToList();
            elems.AddRange(groups);
            //elems.AddRange(basePoints);
            elems.AddRange(modelCurve);
            elems.AddRange(levels);
            elems.AddRange(grids);
            elems.AddRange(viewers);
            elems.AddRange(elevs);
            elems.AddRange(dims);
            elems.AddRange(annotations);
            elems.AddRange(texts);
            elems.AddRange(tags);
            elems.AddRange(fillRegions);
            elems.AddRange(openings);
            elems.AddRange(importInstances);

            var elemIds = elems.ConvertAll(element => element.Id);
            if (elems.Count == 0)
            {
                return;
            }
            StringBuilder sb = new StringBuilder();

            Document.Invoke(_ =>
            {

                foreach (var element in elems)
                {
                    if (element is Group g && g.GroupId != ElementId.InvalidElementId)//嵌套组
                    {
                        continue;
                    }

                    if (element.Pinned)
                    {
                        try
                        {
                            element.Pinned = false;
                        }
                        catch (Autodesk.Revit.Exceptions.InvalidOperationException)
                        {
                        }
                    }


                }

                Document.Regenerate();
                const ObjectSnapTypes snapSettings =
                    ObjectSnapTypes.Endpoints
                    | ObjectSnapTypes.Midpoints
                    | ObjectSnapTypes.Intersections
                    | ObjectSnapTypes.Tangents
                    | ObjectSnapTypes.Quadrants
                    | ObjectSnapTypes.Points
                    | ObjectSnapTypes.Perpendicular
                    | ObjectSnapTypes.Nearest
                    | ObjectSnapTypes.Centers;
                try
                {
                    var originWorkPlane = ActiveView.SketchPlane;
                    var sketch = ActiveView.SketchPlane;
                    if (ActiveView is ViewSection section)
                    {
                        section.SketchPlane = SketchPlane.Create(
                            Document,
                            Plane.CreateByNormalAndOrigin(ActiveView.ViewDirection, XYZ.Zero)
                        );
                        Document.Regenerate();
                    }
                    var origin = UiDocument.Selection.PickPoint(snapSettings, "请点选模型移动的起点（起点）");
                    var target = UiDocument.Selection.PickPoint(snapSettings, "请点选模型移动的目标点（终点）");

                    //Thread.Sleep(1_000);
                    var coordinationResult = MessageBox.Show(
                        $"起点坐标：{origin * 304.8}mm\n终点坐标：{target * 304.8}mm",
                        "确认坐标是否无误并进行移动？",
                        MessageBoxButton.YesNo,
                        MessageBoxImage.Question
                    );

                    //if (Math.Abs(target.Z - origin.Z) > 10e-6)
                    //{
                    //    var stairs = elems.Where(e => e is Stairs stairs && IsSketchedStairsRun(stairs)).ToList();
                    //    if (stairs.Count > 0)
                    //    {
                    //        MessageBox.Show("草图绘制的楼梯无法上下移动，请先剪切到剪切板，避免移动后被删除", "警告");
                    //        UiDocument.Selection.SetElementIds(stairs.ConvertAll(e => e.Id));
                    //        return;
                    //    }
                    //}
                    
                    if (coordinationResult == MessageBoxResult.Yes)
                    {
                        var translateXyz = target - origin;
                        try
                        {
                            ElementTransformUtils.MoveElements(Document, elemIds, translateXyz);
                        }
                        catch (Exception)
                        {
                            MessageBox.Show("模型移动失败，请检查是否有无法移动的图元", "错误");
                        }
                        //foreach (var item in elemIds)
                        //{
                        //    try
                        //    {

                        //        ElementTransformUtils.MoveElement(Document, item, translateXyz);
                        //    }
                        //    catch (Exception)
                        //    {
                        //        sb.AppendLine($"元素ID：{item},{Document.GetElement(item).Name},图元移动失败,");
                        //    }
                        //}
                    }
                }
                catch (Autodesk.Revit.Exceptions.OperationCanceledException) { }
            }, "移动模型");
            if (elementsBaseFace.Any())
            {
                foreach (var elem in elementsBaseFace)
                {
                    sb.AppendLine($"{elem.Id},{elem.Name},基于面主体的图元，不进行移动，但可能会因为主体移动而错位，请检查,");
                }
            }
            if (sb.Length > 0)
            {
                File.WriteAllText(Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\\移动模型失败.csv", sb.ToString(), Encoding.UTF8);
                MessageBox.Show(
                   $"部分图元无法移动，请查阅桌面 移动模型失败 文件：\n{sb}",
                   "提醒",
                   MessageBoxButton.OK,
                   MessageBoxImage.Information
               );
            }
        }
    }
}