using System.Diagnostics;

using ACadSharp.Entities;

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

using Nice3point.Revit.Toolkit.External;



namespace Sai.RvKits.RvCommon;

[Transaction(TransactionMode.Manual)]
[Regeneration(RegenerationOption.Manual)]
public class ModifyModelParams : ExternalCommand
{
    public override void Execute()
    {
        var elems = UiDocument.SelectObjects<FamilyInstance>();
        if (elems == null)
        {
            return;
        }
        var textRefer = UiDocument.Selection.PickObject(ObjectType.PointOnElement, "请选择管线标注文字");
        var dwg = Document.GetElement(textRefer) as ImportInstance;
        var textLayerName = dwg.GetLayerName(textRefer);
        var path = dwg.GetDwgPath();
        var dwgTransform = dwg!.GetTransform();
        Document.Invoke(_ =>
        {
            using ACadSharp.IO.DwgReader reader = new(path);
            var cadDocument = reader.Read();
            var textEntities = cadDocument.Entities.OfType<TextEntity>().Where(e => e.Layer.Name == textLayerName).ToList();
            double topOffset = default;
            double bottomOffset = default;
            foreach (var familyInstance in elems)
            {
                string str1 = default;
                string str2 = default;
                //XYZ p1 = default;
                //XYZ p2 = default;
                var loc = familyInstance.GetLocXYZ();
                var smallest = double.MaxValue;
                var secondSmallest = double.MaxValue;
                foreach (var entity in textEntities)
                {
                    if (!double.TryParse(entity.Value, out var _))
                    {
                        continue;
                    }

                    var xyz = new XYZ(entity.InsertPoint.X, entity.InsertPoint.Y, entity.InsertPoint.Z) / 304.8;
                    var ofPoint = dwgTransform.OfPoint(xyz);
                    //同一平面
                    var point = new XYZ(ofPoint.X, ofPoint.Y, loc.Z);
                    var temp = point.DistanceTo(loc);
                    if (temp < smallest)
                    {
                        str2 = str1;
                        str1 = entity.Value;
                        //p2 = p1;
                        //p1 = point;
                        secondSmallest = smallest;
                        smallest = temp;
                    }
                    else if (temp < secondSmallest)
                    {
                        //p2 = point;
                        str2 = entity.Value;
                        secondSmallest = temp;
                    }
                }
                var b1 = double.TryParse(str1, out var d1);
                var b2 = double.TryParse(str2, out var d2);
                if (b1 && b2)
                {
                    if (d1 > d2)
                    {
                        topOffset = d1;
                        bottomOffset = d2;
                    }
                    else
                    {
                        topOffset = d2;
                        bottomOffset = d1;
                    }
                }
                //Debug.WriteLine(topOffset * 1000 / 304.8);
                //Debug.WriteLine(bottomOffset * 1000 / 304.8);
                if ((topOffset - bottomOffset) * 1000 / 304.8 < Application.ShortCurveTolerance)
                {

                    Debug.WriteLine(familyInstance.Id);
                }
                else
                {
                    familyInstance.get_Parameter(BuiltInParameter.FAMILY_TOP_LEVEL_OFFSET_PARAM).Set(topOffset * 1000 / 304.8);
                    familyInstance.get_Parameter(BuiltInParameter.FAMILY_BASE_LEVEL_OFFSET_PARAM).Set(bottomOffset * 1000 / 304.8);
                }
            }
        });
    }
}