using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.DB.Mechanical;
using Autodesk.Revit.UI;

namespace RvAddinTest
{
    [Transaction(TransactionMode.Manual)]
    [Regeneration(RegenerationOption.Manual)]
    public class SetDimensions : IExternalCommand
    {
        public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
        {
            //程序UI界面
            var uiapp = commandData.Application;
            //获取元素（选择） 显示元素 视图（活动视图）管理（对象）
            var uidoc = uiapp.ActiveUIDocument;
            //程序
            var app = uiapp.Application;
            //获取位置和场地 视图（多个视图）管理 获取元素（Revit 项目里的全部元素）
            var doc = uidoc.Document;
            //获取所有打开文档
            var docset = uiapp.Application.Documents;
            //当前视图
            var view = doc.ActiveView;
            try
            {
                var refers = uidoc.Selection.GetElementIds();
                var toRotate = new List<IndependentTag>();
                var toDelete = new List<ElementId>();
                foreach (var item in refers)
                {
                    var e = doc.GetElement(item) as IndependentTag;
                    var mep = doc.GetElement(e.TaggedElementId.HostElementId);
                    var loc = mep.Location as LocationCurve;
                    var c = loc.Curve.Length < 2;
                    if (c || Math.Abs((loc.Curve as Line).Direction.Z) > 0.2)
                    {
                        toDelete.Add(item);
                        continue;
                    }
                    if (loc.Curve is Line l)
                    {
                        var ra = l.Direction.AngleTo(XYZ.BasisX);
                        if (ra > Math.PI / 4 && ra < Math.PI / 4 * 3)
                        {
                            toRotate.Add(e);
                        }
                    }
                }
                using (var ts = new Transaction(doc, "旋转标注"))
                {
                    ts.Start();
                    foreach (var item in toRotate)
                    {
                        item.TagOrientation = TagOrientation.Vertical;
                    }
                    doc.Delete(toDelete);
                    ts.Commit();
                }
            }
            catch (Exception ex)
            {

            }

            #region FilterExecute
            //System.Collections.Generic.List<ElementId> col = new FilteredElementCollector(doc, doc.ActiveView.Id).WhereElementIsNotElementType()
            //    .Where(e => e.get_Parameter(BuiltInParameter.ALL_MODEL_INSTANCE_COMMENTS)?.AsString() == "380/220V电源")
            //    .Select(e => e.Id).ToList();
            //uidoc.Selection.SetElementIds(col);
            //Reference refer = uidoc.Selection.PickObject(ObjectType.Element, "请选择XXX");
            //var revitLink = uidoc.Document.GetElement(refer) as RevitLinkInstance;
            //var linkDoc = revitLink.GetLinkDocument();
            //var wallIds = new FilteredElementCollector(linkDoc).OfClass(typeof(Wall)).ToElementIds ();
            //Debug.WriteLine(wallIds.Count);
            //using (var ts=new Transaction(doc,"Copy"))
            //{
            //    ts.Start();
            //    ElementTransformUtils.CopyElements(linkDoc, wallIds, doc, Transform.Identity, new CopyPasteOptions());
            //    ts.Commit();
            //}

            //foreach (Wall wall in walls)
            //{
            //    Debug.WriteLine(wall.Id);
            //    Thread.Sleep(500);
            //}
            #endregion SelectExecute

            return Result.Succeeded;
        }
    }
}