using Autodesk.Revit.DB;

using Autodesk.Revit.DB.Electrical;
using Autodesk.Revit.DB.Mechanical;
using Autodesk.Revit.DB.Plumbing;
using Autodesk.Revit.UI.Selection;

using CommunityToolkit.Mvvm.ComponentModel;

using CommunityToolkit.Mvvm.Input;

using Nice3point.Revit.Toolkit.External.Handlers;

using System.Linq;

using Szmedi.RvKits.Assists;

namespace Szmedi.RvKits.MEPTools
{
    public partial class StandMepCurveViewModel : ObservableObject
    {
        public StandMepCurveViewModel(Document doc)
        {
            standMepCurveEventHandler = new ActionEventHandler();
            PipeTypes = doc.QueryElementsByType<PipeType>().Cast<PipeType>();
            DuctTypes = doc.QueryElementsByType<DuctType>().Cast<DuctType>();
            ConduitTypes = doc.QueryElementsByType<ConduitType>().Cast<ConduitType>();
            CableTrayTypes = doc.QueryElementsByType<CableTrayType>().Cast<CableTrayType>();
            PipeSystemTypes = doc.QueryElementsByType<PipingSystemType>().Cast<PipingSystemType>();
            DuctSystemTypes = doc.QueryElementsByType<MechanicalSystemType>().Cast<MechanicalSystemType>();
        }

        private readonly ActionEventHandler standMepCurveEventHandler;

        [ObservableProperty]
        private System.Collections.IEnumerable cableTrayTypes;

        [ObservableProperty]
        private System.Collections.IEnumerable conduitTypes;

        [ObservableProperty]
        private System.Collections.IEnumerable ductSystemTypes;

        [ObservableProperty]
        [NotifyCanExecuteChangedFor(nameof(CreateMepCurveCommand))]
        private System.Collections.IEnumerable ductTypes;

        [ObservableProperty]
        [NotifyCanExecuteChangedFor(nameof(CreateMepCurveCommand))]
        private bool? isCableTray = false;

        [ObservableProperty]
        [NotifyCanExecuteChangedFor(nameof(CreateMepCurveCommand))]
        private bool? isConduit = false;

        [ObservableProperty]
        [NotifyCanExecuteChangedFor(nameof(CreateMepCurveCommand))]
        private bool? isDuct = false;

        [ObservableProperty]
        [NotifyCanExecuteChangedFor(nameof(CreateMepCurveCommand))]
        private bool? isPipe = true;

        [ObservableProperty]
        private System.Collections.IEnumerable pipeSystemTypes;

        [ObservableProperty]
        private System.Collections.IEnumerable pipeTypes;

        [ObservableProperty]
        [NotifyCanExecuteChangedFor(nameof(CreateMepCurveCommand))]
        private CableTrayType selectedCableTrayType;

        [ObservableProperty]
        [NotifyCanExecuteChangedFor(nameof(CreateMepCurveCommand))]
        private ConduitType selectedConduitType;

        [ObservableProperty]
        [NotifyCanExecuteChangedFor(nameof(CreateMepCurveCommand))]
        private MechanicalSystemType selectedDuctSystemType;

        [ObservableProperty]
        [NotifyCanExecuteChangedFor(nameof(CreateMepCurveCommand))]
        private DuctType selectedDuctType;

        [ObservableProperty]
        [NotifyCanExecuteChangedFor(nameof(CreateMepCurveCommand))]
        private PipingSystemType selectedPipeSystemType;

        [ObservableProperty]
        [NotifyCanExecuteChangedFor(nameof(CreateMepCurveCommand))]
        private PipeType selectedPipeType;
        private bool isRunning;

        private bool CanCreate()
        {
            return (IsPipe == true && SelectedPipeType != null && SelectedPipeSystemType != null)
                || (IsDuct == true && SelectedDuctType != null && SelectedDuctSystemType != null)
                || (IsConduit == true && SelectedConduitType != null)
                || (IsCableTray == true && SelectedCableTrayType != null && !isRunning);
        }

        [RelayCommand]
        private void Cancel()
        {
            if (isRunning)
            {
                CommandAssists.ExitCurrentCommand();
            }
        }

        [RelayCommand(CanExecute = nameof(CanCreate))]
        private void CreateMepCurve()
        {
            isRunning = true;
            standMepCurveEventHandler.Raise(app =>
            {
                var uidoc = app.ActiveUIDocument;
                var view = uidoc.ActiveView;
                var doc = uidoc.Document;
                var snapping = ObjectSnapTypes.Centers | ObjectSnapTypes.Tangents | ObjectSnapTypes.Midpoints | ObjectSnapTypes.Endpoints | ObjectSnapTypes.Nearest | ObjectSnapTypes.Perpendicular | ObjectSnapTypes.Intersections;
                var point = uidoc.Selection.PickPoint(snapping, "创建立管的点");
                var startPoint = new XYZ(point.X, point.Y, view.GenLevel.Elevation);
                var endPoint = new XYZ(point.X, point.Y, view.GenLevel.Elevation + (2000 / 304.8));
                doc.Invoke(
                    _ =>
                    {
                        if (IsPipe == true)
                        {
                            var pipe = Pipe.Create(
                                doc,
                                SelectedPipeSystemType.Id,
                                SelectedPipeType.Id,
                                view.GenLevel.Id,
                                startPoint,
                                endPoint
                            );
                        }
                        else if (IsDuct == true)
                        {
                            var duct = Duct.Create(
                                doc,
                                SelectedDuctSystemType.Id,
                                SelectedDuctType.Id,
                                view.GenLevel.Id,
                                startPoint,
                                endPoint
                            );
                        }
                        else if (IsConduit == true)
                        {
                            var conduit = Conduit.Create(doc, SelectedConduitType.Id, startPoint, endPoint, view.GenLevel.Id);
                        }
                        else if (IsCableTray == true)
                        {
                            var cableTray = CableTray.Create(doc, SelectedCableTrayType.Id, startPoint, endPoint, view.GenLevel.Id);
                        }
                    },
                    "创建立管"
                );
            });
            isRunning = false;
        }
    }
}