using System.Linq;

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

using Nice3point.Revit.Toolkit.External;

namespace GeologyToolkit
{
    [Autodesk.Revit.Attributes.Transaction(Autodesk.Revit.Attributes.TransactionMode.Manual)]
    [Autodesk.Revit.Attributes.Regeneration(Autodesk.Revit.Attributes.RegenerationOption.Manual)]
    public class MovePointCmd : ExternalCommand
    {
        public override void Execute()
        {
            var isContinue = true;
            try
            {
                while (isContinue)
                {
                    var refer = UiDocument.Selection.PickObject(ObjectType.Element, new SelectTopographySurface(), "请选择要调整地层面");
                    var surface = Document.GetElement(refer) as TopographySurface;
                    var refer1 = UiDocument.Selection.PickObject(ObjectType.Element, new SelectLayer(), "请选择要移动的土层");
                    var familyinstance = Document.GetElement(refer1) as FamilyInstance;
                    var placePointIds = AdaptiveComponentInstanceUtils.GetInstancePlacementPointElementRefIds(familyinstance);
                    var referpoint = Document.GetElement(placePointIds[1]) as ReferencePoint;

                    var scope = new TopographyEditScope(Document, "移动地层点");
                    if (scope.IsPermitted)
                    {
                        scope.Start(surface.Id);
                    }
                    else
                    {
                        Result= Result.Failed;
                        return;
                    }

                    GeologyFailureProcessor processor = null;
                    using (var ts = new Transaction(Document, "移动地层点"))
                    {
                        ts.Start();
                        if (scope.IsActive)
                        {
                            var movePoint = surface.GetPoints().Where(p => p.CrossProduct(referpoint.Position).Normalize().Z == 0).FirstOrDefault();
                            if (movePoint != null)
                            {
                                surface.MovePoint(movePoint, referpoint.Position);
                                processor = new GeologyFailureProcessor();
                            }
                        }
                        ts.Commit();
                    }

                    scope.Commit(processor);
                }
            }
            catch (Autodesk.Revit.Exceptions.OperationCanceledException)
            {
            }
        }
    }
}