using System.Windows;

using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;

using Nice3point.Revit.Toolkit.External;

namespace ShrlAlgoToolkit.RevitAddins.FamMaster;

/// <summary>
/// 剪切内建模型
/// </summary>
[Transaction(TransactionMode.Manual)]
public class CutGeologyByLoopCmd : ExternalCommand
{
    public override void Execute()
    {
        try
        {
            var curveElements = UiDocument.Selection
                                        .PickElementsByRectangle(new GenericFilter<CurveElement>(), "请框选闭合的模型线或符号线")
                                        .Cast<CurveElement>();
            var curvesSelected = curveElements.Select(x => x.GeometryCurve).ToList();
            if(curvesSelected.Count < 3)
            {
                MessageBox.Show("请至少选择三条线", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                return;
            }
            var curveList = SpatialAssist.GroupContinuousCurves(curvesSelected);
            List<CurveLoop> curveLoops = new List<CurveLoop>();
            foreach(var curves in curveList)
            {
                var loop = CurveLoop.Create(curves);
                if(loop.IsOpen())
                {
                    continue;
                }
                curveLoops.Add(loop);
            }

            if(curveLoops.Count == 0)
            {
                MessageBox.Show("未能构成闭合环", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                return;
            }
            if(curveLoops.Count > 1)
            {
                MessageBox.Show("存在多个闭合环，请确保只选择一个闭合环", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                return;
            }
            var solidInstances = UiDocument.Selection
                                         .PickElementsByRectangle(
                                             new FuncFilter(
                                                 e => e is FamilyInstance instance && instance.Symbol.Family.IsInPlace),
                                             "请选择一个实体族")
                                         .Cast<FamilyInstance>()
                                         .ToList();
            //var solidInstances = solidReferences.Select(x => x as FamilyInstance).ToList();
            var solidCut = GeometryCreationUtilities.CreateExtrusionGeometry(curveLoops, new XYZ(0, 0, 1), 100000);
            //StringBuilder sb = new StringBuilder();

            Document.Invoke(
                _ =>
                {
                    foreach(var instance in solidInstances)
                    {
                        var geomElem = instance.get_Geometry(new Options());
                        foreach(var geometryObject in geomElem)
                        {
                            if(geometryObject is GeometryInstance geomInst)
                            {
                                var instanceGeoms = geomInst.GetInstanceGeometry();
                                foreach(var geom in instanceGeoms)
                                {
                                    if(geom is Solid solid)
                                    {
                                        var solidResult = BooleanOperationsUtils.ExecuteBooleanOperation(
                                            solid,
                                            solidCut,
                                            BooleanOperationsType.Intersect);
                                        var shape = Document.CreateDirectShapeInstance(
                                            instance.Name,
                                            BuiltInCategory.OST_GenericModel,
                                            [ solidResult ]);
                                        Document.Regenerate();

                                        var materialId = shape.GetMaterialIds(false).FirstOrDefault();

                                        var subGeoElem = shape.get_Geometry(new Options());
                                        foreach(var ins in subGeoElem)
                                        {
                                            if(ins is Solid subSolid)
                                            {
                                                foreach(Face item in subSolid.Faces)
                                                {
                                                    try
                                                    {
                                                        Document.Paint(shape.Id, item, materialId);
                                                    } catch(Exception)
                                                    {
                                                        continue;
                                                    }
                                                }
                                            }
                                        }

                                        //shape.GetMaterialIds()
                                    }
                                }
                            }
                            //var geomInst = geometryObject.GetInstanceGeometry();
                        }
                    }
                },
                "剪切几何");
            //MessageBox.Show(sb.ToString());
        } catch(Autodesk.Revit.Exceptions.OperationCanceledException)
        {
        } catch(Exception ex)
        {
            MessageBox.Show(ex.Message, "错误", MessageBoxButton.OK, MessageBoxImage.Error);
        }
    }
}