using System.IO;
using System.Windows;
using BruTile;
using BruTile.MbTiles;
using BruTile.Predefined;
using SQLite;

using NetTopologySuite.IO;
using NetTopologySuite.Features;
using NetTopologySuite.Geometries;

using Mapsui;
using Mapsui.Layers;
using Mapsui.Providers;
using Mapsui.Styles;
using Mapsui.Projections;
using Mapsui.Tiling.Layers;
using Mapsui.Nts;
using Mapsui.UI.Wpf;

// Aliases para evitar conflito com NetTopologySuite.* (NTS)
using UserControl = System.Windows.Controls.UserControl;
using OpenFileDialog = Microsoft.Win32.OpenFileDialog;
using MIFeature = Mapsui.IFeature;
using Brush = Mapsui.Styles.Brush;
using Pen = Mapsui.Styles.Pen;
using Color = Mapsui.Styles.Color;
using Font = Mapsui.Styles.Font;
using NFeature = NetTopologySuite.Features.Feature;
using Mapsui.Manipulations;
using Mapsui.Extensions;
using OperationControl.Models;
using static AgroBase.Models.Enums;
using System.Windows.Input;


namespace OperationControl.Controls
{
    public partial class MapViewControl : UserControl
    {
        public MapViewControl()
        {
            InitializeComponent();
            Loaded += OnLoaded;
            markers = new MapMarkerManager(Mapa);
            RuasMapaCarregado = new List<StreetMapDictionaryModel>();
            HookHitTesting();
        }

        public static readonly DependencyProperty LatitudeProperty = DependencyProperty.Register(nameof(Latitude), typeof(double), typeof(MapViewControl), new PropertyMetadata(0.0, OnViewPropertyChanged));
        public static readonly DependencyProperty LongitudeProperty = DependencyProperty.Register(nameof(Longitude), typeof(double), typeof(MapViewControl), new PropertyMetadata(0.0, OnViewPropertyChanged));
        public static readonly DependencyProperty ScaleProperty = DependencyProperty.Register(nameof(Scale), typeof(double), typeof(MapViewControl), new PropertyMetadata(5000.0, OnViewPropertyChanged));
        public static readonly DependencyProperty MbTilesPathProperty = DependencyProperty.Register(nameof(MbTilesPath), typeof(string), typeof(MapViewControl), new PropertyMetadata(string.Empty, OnMbTilesPathChanged));
        public double Latitude
        {
            get => (double)GetValue(LatitudeProperty);
            set => SetValue(LatitudeProperty, value);
        }
        public double Longitude
        {
            get => (double)GetValue(LongitudeProperty);
            set => SetValue(LongitudeProperty, value);
        }
        public double Scale
        {
            get => (double)GetValue(ScaleProperty);
            set => SetValue(ScaleProperty, value);
        }


        public static readonly DependencyProperty MarkerClickedCommandProperty = 
            DependencyProperty.Register(
                nameof(MarkerClickedCommand),
                typeof(ICommand),
                typeof(MapViewControl),
                new PropertyMetadata(null));

        public ICommand MarkerClickedCommand
        {
            get => (ICommand)GetValue(MarkerClickedCommandProperty);
            set => SetValue(MarkerClickedCommandProperty, value);
        }

        public static readonly DependencyProperty StreetMapClickedCommandProperty =
            DependencyProperty.Register(
                nameof(StreetMapClickedCommand),
                typeof(ICommand),
                typeof(MapViewControl),
                new PropertyMetadata(null));

        public ICommand StreetMapClickedCommand
        {
            get => (ICommand)GetValue(StreetMapClickedCommandProperty);
            set => SetValue(StreetMapClickedCommandProperty, value);
        }


        #region MARCADORES

        public MapMarkerManager markers;
        public event EventHandler<MapMarkerManager.MarkerClickedEventArgs>? MarkerClicked;
        protected virtual void OnMarkerClicked(string markerId)
        {
            if (markerId == null) markers?.ClearMarkerFocused();
            else markers?.SetMarkerFocused(markerId, true);
            MarkerClicked?.Invoke(this, new MapMarkerManager.MarkerClickedEventArgs(markerId));
        }

        private void OnMarkerClickedInternal(MapMarkerManager.MarkerClickedEventArgs e)
        {
            MarkerClicked?.Invoke(this, e);

            if (MarkerClickedCommand?.CanExecute(e) == true)
                MarkerClickedCommand.Execute(e);
        }

        #endregion

        #region RUAS PLANTACAO

        private Layer MapaPlantacao_Layer;
        public List<StreetMapDictionaryModel> RuasMapaCarregado;

        public event EventHandler<StreetMapClickedEventArgs>? StreetMapClicked;
        private bool ParametrizandoOperacao => !(VariaveisControleOperacao.RoverEmFoco?.DadosLeitura?.Operacao?.Iniciada ?? false) && (VariaveisControleOperacao.RoverEmFoco?.DadosLeitura?.Operacao?.Status ?? StatusOperacao.NaoIniciado) == StatusOperacao.Parametrizando;
        protected virtual void OnStreetMapClicked(string streetId)
        {
            StreetMapClicked?.Invoke(this, new StreetMapClickedEventArgs(streetId, RuasMapaCarregado.Where(x => x.Selected).Select(x => x.Id).ToList()));
        }

        private void OnStreetMapClickedInternal(StreetMapClickedEventArgs e)
        {
            StreetMapClicked?.Invoke(this, e);

            if (StreetMapClickedCommand?.CanExecute(e) == true)
                StreetMapClickedCommand.Execute(e);
        }

        private void HighlightRoad(MIFeature? feature = null, string? id = null)
        {
            if (string.IsNullOrEmpty(id))
                id = GetAttr(feature, "Id");
            var rua = RuasMapaCarregado.FirstOrDefault(x => x.Id == id);
            if (rua == null) return;

            rua.Selected = !rua.Selected;
            rua.Status = (rua.Selected) ? StreetMapStyle.Selected : StreetMapStyle.Normal;

            rua.Feature.Styles.Clear();
            rua.Feature.Styles.Add(CreateStreetStyle(rua.Status));

            Mapa.Refresh();

            OnStreetMapClicked(id);
        }

        private void AtualizarStylesRuas()
        {
            foreach (var rua in RuasMapaCarregado)
            {
                rua.Status = (rua.Selected) ? StreetMapStyle.Selected : StreetMapStyle.Normal;
                rua.Feature.Styles.Clear();
                rua.Feature.Styles.Add(CreateStreetStyle(rua.Status));
            }

            Mapa.Refresh();
        }

        public enum StreetMapStyle
        {
            Normal, 
            Selected, 
            Running, 
            Done
        }

        public class StreetMapDictionaryModel
        {
            public string Id { get; set; }
            public MIFeature Feature { get; set; }
            public bool Selected { get; set; }
            public StreetMapStyle Status { get; set; }
        }

        public class StreetMapClickedEventArgs : EventArgs
        {
            public string StreetId { get; }
            public List<string> SelectedStreetsIds { get; }

            public StreetMapClickedEventArgs(string streetId, List<string> selectedStreets)
            {
                StreetId = streetId;
                SelectedStreetsIds = new List<string>(selectedStreets);
            }
        }

        private static VectorStyle CreateStreetStyle(StreetMapStyle style)
        {
            switch (style)
            {
                case StreetMapStyle.Selected:
                    return new VectorStyle
                    {
                        Line = new Pen(Color.FromArgb(255, 241, 196, 15), 4), // amarelo mais grosso
                        Fill = null
                    };

                case StreetMapStyle.Running:
                    return new VectorStyle
                    {
                        Line = new Pen(Color.FromArgb(255, 52, 152, 219), 4), // azul
                        Fill = null
                    };

                case StreetMapStyle.Done:
                    return new VectorStyle
                    {
                        Line = new Pen(Color.FromArgb(255, 39, 174, 96), 3), // verde
                        Fill = null
                    };

                case StreetMapStyle.Normal:
                default:
                    return new VectorStyle
                    {
                        Line = new Pen(Color.FromArgb(255, 46, 204, 113), 2), // seu padrão do GeoJson
                        Fill = new Brush(Color.FromArgb(60, 46, 204, 113))
                    };
            }
        }

        public void AtualizarStatusRua(string id, StreetMapStyle status)
        {
            var rua = RuasMapaCarregado.FirstOrDefault(x => x.Id == id);
            if (rua == null) return;

            rua.Status = status;
            ApplyStreetStyles();
        }

        private void ApplyStreetStyles()
        {
            if (RuasMapaCarregado == null) return;

            foreach (var rua in RuasMapaCarregado)
            {
                rua.Feature.Styles.Clear();
                rua.Feature.Styles.Add(CreateStreetStyle(rua.Status));
            }

            Mapa.Refresh();
        }

        #endregion

        #region BASE LAYER

        private TileLayer? _baseLayer;
        private List<BaseLayerOption> _baseOptions;
        public string MbTilesPath
        {
            get => (string)GetValue(MbTilesPathProperty);
            set => SetValue(MbTilesPathProperty, value);
        }

        private class BaseLayerOption
        {
            public string Name { get; set; } = "";
            public Func<ILayer> CreateLayer { get; set; } = default!;
            public override string ToString() => Name;
        }

        private void InitBaseMapOptions()
        {
            _baseOptions = new List<BaseLayerOption>
            {
                new BaseLayerOption
                {
                    Name = "OpenStreetMap",
                    CreateLayer = () =>
                    {
                        var src = KnownTileSources.Create(KnownTileSource.OpenStreetMap);
                        var layer = new TileLayer(src) { Name = "_BaseTile" };
                        return layer;
                    }
                },
                new BaseLayerOption
                {
                    Name = "OpenCycleMap",
                    CreateLayer = () =>
                    {
                        var src = KnownTileSources.Create(KnownTileSource.OpenCycleMap);
                        var layer = new TileLayer(src) { Name = "_BaseTile" };
                        return layer;
                    }
                },
                new BaseLayerOption
                {
                    Name = "OpenCycleMapTransport",
                    CreateLayer = () =>
                    {
                        var src = KnownTileSources.Create(KnownTileSource.OpenCycleMapTransport);
                        var layer = new TileLayer(src) { Name = "_BaseTile" };
                        return layer;
                    }
                },
                new BaseLayerOption
                {
                    Name = "EsriWorldBoundariesAndPlaces",
                    CreateLayer = () =>
                    {
                        var src = KnownTileSources.Create(KnownTileSource.EsriWorldBoundariesAndPlaces);
                        var layer = new TileLayer(src) { Name = "_BaseTile" };
                        return layer;
                    }
                },
                new BaseLayerOption
                {
                    Name = "EsriWorldDarkGrayBase",
                    CreateLayer = () =>
                    {
                        var src = KnownTileSources.Create(KnownTileSource.EsriWorldDarkGrayBase);
                        var layer = new TileLayer(src) { Name = "_BaseTile" };
                        return layer;
                    }
                },
                new BaseLayerOption
                {
                    Name = "EsriWorldPhysical",
                    CreateLayer = () =>
                    {
                        var src = KnownTileSources.Create(KnownTileSource.EsriWorldPhysical);
                        var layer = new TileLayer(src) { Name = "_BaseTile" };
                        return layer;
                    }
                },
                new BaseLayerOption
                {
                    Name = "EsriWorldReferenceOverlay",
                    CreateLayer = () =>
                    {
                        var src = KnownTileSources.Create(KnownTileSource.EsriWorldReferenceOverlay);
                        var layer = new TileLayer(src) { Name = "_BaseTile" };
                        return layer;
                    }
                },
                new BaseLayerOption
                {
                    Name = "EsriWorldShadedRelief",
                    CreateLayer = () =>
                    {
                        var src = KnownTileSources.Create(KnownTileSource.EsriWorldShadedRelief);
                        var layer = new TileLayer(src) { Name = "_BaseTile" };
                        return layer;
                    }
                },
                new BaseLayerOption
                {
                    Name = "EsriWorldTopo",
                    CreateLayer = () =>
                    {
                        var src = KnownTileSources.Create(KnownTileSource.EsriWorldTopo);
                        var layer = new TileLayer(src) { Name = "_BaseTile" };
                        return layer;
                    }
                },
                new BaseLayerOption
                {
                    Name = "EsriWorldTransportation",
                    CreateLayer = () =>
                    {
                        var src = KnownTileSources.Create(KnownTileSource.EsriWorldTransportation);
                        var layer = new TileLayer(src) { Name = "_BaseTile" };
                        return layer;
                    }
                },
                new BaseLayerOption
                {
                    Name = "BKGTopPlusColor",
                    CreateLayer = () =>
                    {
                        var src = KnownTileSources.Create(KnownTileSource.BKGTopPlusColor);
                        var layer = new TileLayer(src) { Name = "_BaseTile" };
                        return layer;
                    }
                },
                new BaseLayerOption
                {
                    Name = "Deep Zoom (Empty)",
                    CreateLayer = () =>
                    {
                        // Sem tile de fundo: devolve null e tratamos na troca
                        return null!;
                    }
                }
                // Se quiser Bing, precisa de API key:
                // new BaseLayerOption
                // {
                //     Name = "Bing Aerial (requer key)",
                //     CreateLayer = () => {
                //         var key = "SUA_BING_MAPS_KEY";
                //         var src = KnownTileSources.Create(KnownTileSource.BingAerial, key);
                //         return new TileLayer(src){ Name = "_BaseTile" };
                //     }
                // },
            };

            CmbBaseMap.ItemsSource = _baseOptions;
            CmbBaseMap.SelectedIndex = 0;
        }

        private void ReplaceBaseLayer(BaseLayerOption option)
        {
            if (Mapa?.Map == null) return;

            // 1) guardar o centro aproximado (compatível entre versões)
            var center = GetCenterWorldSafe();

            // 2) remover base antiga (se houver)
            if (_baseLayer != null && Mapa.Map.Layers.Contains(_baseLayer))
                Mapa.Map.Layers.Remove(_baseLayer);

            // 3) criar nova base e inserir no começo da lista (fica no fundo)
            var newBase = option.CreateLayer() as TileLayer;
            if (newBase != null)
            {
                Mapa.Map.Layers.Insert(0, newBase);
                _baseLayer = newBase;
                HideOverlay();
            }

            // 4) recentrar onde estava (se conseguir ler o centro)
            if (center != null)
            {
                try { Mapa.Map.Navigator?.CenterOn(center); } catch { /* versões antigas */ }
            }

            // 5) garantir marcadores por cima
            try { markers?.BringMarkersToFront(); } catch { }

            Mapa.Refresh();
        }

        private Mapsui.MPoint? GetCenterWorldSafe()
        {
            try
            {
                // tentativas em versões diferentes
                dynamic nav = Mapa?.Map?.Navigator;
                if (nav != null)
                {
                    try { var c = nav.Center; if (c != null) return (Mapsui.MPoint)c; } catch { }
                    try
                    {
                        var vp = nav.Viewport;
                        if (vp != null)
                        {
                            var cx = (double)vp.CenterX;
                            var cy = (double)vp.CenterY;
                            return new Mapsui.MPoint(cx, cy);
                        }
                    }
                    catch { }
                }
                dynamic vp2 = Mapa?.Map?.Navigator?.Viewport;
                if (vp2 != null)
                {
                    var cx = (double)vp2.CenterX;
                    var cy = (double)vp2.CenterY;
                    return new Mapsui.MPoint(cx, cy);
                }
            }
            catch { }
            return null;
        }

        private void OnBaseMapChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
        {
            if (CmbBaseMap.SelectedItem is BaseLayerOption opt)
                ReplaceBaseLayer(opt);
        }

        #endregion

        private void OnLoaded(object sender, RoutedEventArgs e)
        {
            if (Mapa.Map == null)
            {
                Mapa.Map = new Mapsui.Map();
                Mapa.Map.BackColor = Color.FromString("#111111");
            }

            InitBaseMapOptions();

            EnsureBaseLayer();
            NavigateToView();
        }

        private static void OnViewPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if (d is MapViewControl ctrl && ctrl.IsLoaded)
            {
                ctrl.NavigateToView();
            }
        }

        private static void OnMbTilesPathChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if (d is MapViewControl ctrl && ctrl.IsLoaded)
            {
                ctrl.EnsureBaseLayer();
            }
        }

        private void HookHitTesting()
        {
            // Clique: seleciona (foco)
            Mapa.MouseLeftButtonUp += (s, e) =>
            {
                var pos = e.GetPosition(Mapa);
                var sp = new ScreenPosition(pos.X, pos.Y);

                // algumas versões têm sobrecarga com tolerância (px). Tente esta:
                var info = Mapa.GetMapInfo(sp, Mapa.Map.Layers /*, 18*/);
                var feat = info?.Feature;

                if (info?.Layer == markers.Layer && feat != null && markers != null && markers.TryGetIdFromFeature(feat, out var id))
                {
                    OnMarkerClicked(id);
                }
                else if (info?.Layer == MapaPlantacao_Layer && feat is MIFeature roadFeature)
                {
                    if (ParametrizandoOperacao)
                        HighlightRoad(roadFeature);
                }
                else
                {
                    OnMarkerClicked(null);
                }
                
            };

            // Hover: cursor de mão (mantém como já fez)
            Mapa.MouseMove += (s, e) =>
            {
                try
                {
                    var pos = e.GetPosition(Mapa);
                    var sp = new ScreenPosition(pos.X, pos.Y);
                    var info = Mapa.GetMapInfo(sp, Mapa.Map.Layers /*, 18*/);
                    var feat = info?.Feature;

                    if (feat != null && markers != null && markers.TryGetIdFromFeature(feat, out _))
                        Mapa.Cursor = System.Windows.Input.Cursors.Hand;
                    else if (feat != null && info?.Layer == MapaPlantacao_Layer && feat is MIFeature roadFeature && ParametrizandoOperacao)
                        Mapa.Cursor = System.Windows.Input.Cursors.Hand;
                    else
                        Mapa.Cursor = System.Windows.Input.Cursors.Arrow;
                }
                catch
                {
                    Mapa.Cursor = System.Windows.Input.Cursors.Arrow;
                }
            };
        }


        private void EnsureBaseLayer()
        {
            try
            {
                // Remove camada base anterior (se houver)
                if (_baseLayer != null)
                {
                    Mapa.Map.Layers.Remove(_baseLayer);
                    _baseLayer = null;
                }

                // Tenta carregar MBTiles se existir
                if (!string.IsNullOrWhiteSpace(MbTilesPath) && File.Exists(MbTilesPath))
                {
                    var connStr = new SQLiteConnectionString(MbTilesPath, false);
                    var schema = new GlobalSphericalMercator(YAxis.TMS, 0, 18); // ajuste de níveis se necessário
                    var mb = new MbTilesTileSource(connStr, schema);
                    _baseLayer = new TileLayer(mb) { Name = "Basemap" };
                    Mapa.Map.Layers.Insert(0, _baseLayer);

                    HideOverlay();
                }
                else
                {
                    // Sem MBTiles: mostra aviso amigável
                    //ShowOverlay("Arquivo MBTiles não encontrado. Defina 'MbTilesPath' para habilitar o mapa offline.");

                    // Fallback online (OpenStreetMap)
                    var osm = KnownTileSources.Create(KnownTileSource.OpenStreetMap);
                    _baseLayer = new TileLayer(osm) { Name = "OSM (online)" };
                    Mapa.Map.Layers.Insert(0, _baseLayer);
                    HideOverlay(); // some com a mensagem
                }
            }
            catch (Exception ex)
            {
                ShowOverlay($"Falha ao carregar MBTiles: {ex.Message}");
            }
        }

        private void NavigateToView()
        {
            if (Mapa?.Map is null) return;

            // Converte WGS84 (lon/lat) para WebMercator
            var (x, y) = SphericalMercator.FromLonLat(Longitude, Latitude);

            // Evita navegar para valores inválidos
            if (double.IsNaN(x) || double.IsNaN(y)) return;

            var center = new MPoint(x, y);
            Mapa.Map?.Navigator?.CenterOnAndZoomTo(center, resolution: Scale > 0 ? Scale : 5000);
        }

        private void ShowOverlay(string message)
        {
            OverlayText.Text = message;
            OverlayMessage.Visibility = Visibility.Visible;
        }

        private void HideOverlay()
        {
            OverlayMessage.Visibility = Visibility.Collapsed;
        }

        /// <summary>
        /// API pública para ajustar a câmera via código.
        /// </summary>
        public void SetView(double latitude, double longitude, double? scale = null)
        {
            Latitude = latitude;
            Longitude = longitude;
            if (scale.HasValue) Scale = scale.Value;
            NavigateToView();
        }

        #region CARREGAR ARQUIVO DE MAPA

        private void OnLoadMapClicked(object sender, RoutedEventArgs e)
        {
            var dlg = new OpenFileDialog
            {
                Filter = "Arquivos de mapa|*.geojson;*.json;*.shp",
                Title = "Selecione o arquivo de mapa"
            };

            if (dlg.ShowDialog() == true)
            {
                var path = dlg.FileName;
                if (path.EndsWith(".shp", StringComparison.OrdinalIgnoreCase))
                {
                    var geojson = ConvertShpToGeoJson(path);
                    AddGeoJsonLayer(geojson);
                }
                else
                {
                    var geojson = File.ReadAllText(path);
                    AddGeoJsonLayer(geojson);
                }
            }
        }

        private string ConvertShpToGeoJson(string shpPath)
        {
            // SRID 4326 por padrão (GeoJSON usa WGS84 lon/lat). Se o .prj for outro,
            // a gente reprojeta depois ao desenhar no Mapsui (já fizemos com ProjectingProvider).
            var gf = new GeometryFactory(new PrecisionModel(), 4326);
            var features = new FeatureCollection();

            using var reader = new ShapefileDataReader(shpPath, gf);
            var header = reader.DbaseHeader;

            while (reader.Read())
            {
                // Geometria vem daqui (NTS)
                var geom = reader.Geometry;
                if (geom == null) continue;

                var f = new NFeature(geom, new AttributesTable());

                // Campos do DBF (pular a coluna de geometria -> usar i+1)
                for (int i = 0; i < header.NumFields; i++)
                {
                    var fld = header.Fields[i];
                    object? val = null;

                    try
                    {
                        // A maioria das builds coloca a geometria em ordinal 0 (por isso i+1)
                        val = reader.GetValue(i + 1);
                    }
                    catch
                    {
                        // fallback caso a implementação local não tenha a coluna 0 como geometria
                        val = reader.GetValue(i);
                    }

                    if (val == null || val is DBNull) continue;

                    // Opcional: normalizar strings/numéricos
                    f.Attributes.Add(fld.Name, val);
                }

                features.Add(f);
            }

            var writer = new GeoJsonWriter();           // << evita loop de referência
            string txt = writer.Write(features);        // 'features' é o FeatureCollection
            return txt;
        }

        private void AddGeoJsonLayer(string geojson)
        {
            var reader = new GeoJsonReader();
            var fc = reader.Read<FeatureCollection>(geojson);

            // 1) Converte NTS -> IFeature (GeometryFeature) mantendo WGS84
            RuasMapaCarregado = new List<StreetMapDictionaryModel>();
            foreach (var f in fc)
            {
                if (f.Geometry == null) continue;

                var gf = new GeometryFeature
                {
                    Geometry = f.Geometry   // NTS geometry em WGS84 (lon/lat)
                };

                // copia atributos (opcional)
                foreach (var name in f.Attributes.GetNames())
                    gf[name] = f.Attributes[name];

                RuasMapaCarregado.Add(new StreetMapDictionaryModel()
                {
                    Id = GetAttr(gf, "Id"), 
                    Feature = gf,
                    Selected = false, 
                    Status = StreetMapStyle.Normal
                });
            }

            // 2) Provider em WGS84 (fonte)
            var mem = new MemoryProvider(RuasMapaCarregado.Select(x => x.Feature))
            {
                CRS = "EPSG:4326"
            };

            // 3) Projeta on-the-fly para o CRS do mapa (WebMercator)
            //    Garanta que seu Mapa.Map.CRS esteja em "EPSG:3857" quando criar o Map.
            var projecting = new ProjectingProvider(mem)
            {
                CRS = "EPSG:3857"
            };

            if (Mapa.Map.Layers.Any(x => x.Name == MapaPlantacao_Layer?.Name))
                Mapa.Map.Layers.Remove(MapaPlantacao_Layer);

            // 4) Camada
            MapaPlantacao_Layer = new Layer("GeoJson")
            {
                DataSource = projecting,
                Style = new VectorStyle
                {
                    Line = new Pen(Color.FromArgb(255, 46, 204, 113), 2),
                    Fill = new Brush(Color.FromArgb(60, 46, 204, 113))
                }
            };

            Mapa.Map.Layers.Add(MapaPlantacao_Layer);

            markers.BringMarkersToFront();
            Mapa.Refresh();

            // 5) Auto-zoom usando o próprio provider projetado
            //var extent = projecting.GetExtent();
            //if (extent != null)
            //    Mapa.Map.Navigator?.ZoomToBox(extent);

            try
            {
                double _long = ((dynamic)RuasMapaCarregado[0].Feature).Geometry.Coordinate.X;
                double _lat = ((dynamic)RuasMapaCarregado[0].Feature).Geometry.Coordinate.Y;
                SetView(_lat, _long, 1);
            }
            catch (Exception ex)
            {
                Variaveis.MostrarLog($"Erro ao carregar coordenadas do mapa: {ex.Message}");
            }
        }

        private void OnCenterAreaClicked(object sender, RoutedEventArgs e)
        {
            NavigateToView();
        }


        public void LoadMapFile(string path)
        {
            if (string.IsNullOrWhiteSpace(path) || !File.Exists(path))
                return;

            if (path.EndsWith(".shp", StringComparison.OrdinalIgnoreCase))
            {
                var geojson = ConvertShpToGeoJson(path);
                AddGeoJsonLayer(geojson);
            }
            else
            {
                var geojson = File.ReadAllText(path);
                AddGeoJsonLayer(geojson);
            }
        }

        #endregion



        private Dictionary<string, string> ParseFeatureAttributes(MIFeature feature)
        {
            var dict = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);

            if (feature == null)
                return dict;

            var text = feature.ToStringOfKeyValuePairs();
            if (string.IsNullOrWhiteSpace(text))
                return dict;

            var lines = text.Split(new[] { '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries);

            foreach (var line in lines)
            {
                var parts = line.Split(new[] { ':' }, 2); // divide em "Nome" e "valor"
                if (parts.Length == 2)
                {
                    var key = parts[0].Trim();
                    var value = parts[1].Trim();
                    if (!string.IsNullOrEmpty(key))
                        dict[key] = value;
                }
            }

            return dict;
        }

        private string? GetAttr(MIFeature feature, string fieldName)
        {
            var dict = ParseFeatureAttributes(feature);
            return dict.TryGetValue(fieldName, out var v) ? v : null;
        }

        public AgroBase.Models.MapaFeatureCollectionModel CriarDadosMapa()
        {
            AgroBase.Models.MapaFeatureCollectionModel _mapa = new AgroBase.Models.MapaFeatureCollectionModel() { type = "FeatureCollection", features = new List<AgroBase.Models.MapaFeatureModel>() };
            foreach (var x in RuasMapaCarregado.Where(x => x.Selected))
            {
                string id = ((dynamic)x.Feature).Id.ToString();
                string type = ((dynamic)x.Feature).Geometry.GeometryType;
                string s = ((dynamic)x.Feature).Geometry.CoordinateSequence.ToString();
                s = s.Trim().TrimStart('(').TrimEnd(')');
                var pairs = s.Split("),", StringSplitOptions.RemoveEmptyEntries);
                var coordinates = new List<List<double>>();
                foreach (var p in pairs)
                {
                    var clean = p.Replace("(", "").Replace(")", "").Trim();
                    var parts = clean.Split(',', StringSplitOptions.RemoveEmptyEntries);
                    if (parts.Length == 2 && double.TryParse(parts[0], System.Globalization.NumberStyles.Any, System.Globalization.CultureInfo.InvariantCulture, out double lon) && double.TryParse(parts[1], System.Globalization.NumberStyles.Any, System.Globalization.CultureInfo.InvariantCulture, out double lat))
                    {
                        coordinates.Add(new List<double> { lon, lat });
                    }
                }

                AgroBase.Models.MapaFeatureGeometryModel geometry = new AgroBase.Models.MapaFeatureGeometryModel()
                {
                    id = GetAttr(x.Feature, "Id"),
                    type = type,
                    coordinates = coordinates
                };

                _mapa.features.Add(new AgroBase.Models.MapaFeatureModel()
                {
                    type = "Feature",
                    geometry = geometry,
                    properties = new AgroBase.Models.MapaFeaturePropertiesModel()
                    {
                        Id = GetAttr(x.Feature, "Id"),
                        Dist1 = double.Parse(GetAttr(x.Feature, "Dist1")),
                        Dist2 = double.Parse(GetAttr(x.Feature, "Dist2")),
                        Length = double.Parse(GetAttr(x.Feature, "Length")),
                        Name = GetAttr(x.Feature, "Name")
                    }
                });
            };

            return _mapa;
        }

        public void CarregarDadosMapa(AgroBase.Models.MapaFeatureCollectionModel Mapa, List<string> RuasSelecionadas)
        {
            if (RuasMapaCarregado.Any())
            {
                foreach (var rua in RuasMapaCarregado)
                {
                    var dado = Mapa?.features?.FirstOrDefault(x => x.properties.Id == rua.Id);
                    if (dado == null) continue;
                    rua.Selected = RuasSelecionadas.Contains(dado.properties.Id);
                }

                AtualizarStylesRuas();
            }
        }

    }

    public class MapMarkerManager
    {
        public MapMarkerManager(MapControl map, string layerName = "Markers")
        {
            _map = map ?? throw new ArgumentNullException(nameof(map));
            _layerName = layerName;

            _provider = new MemoryProvider(_features.SelectMany(x => x.Features));
            _layer = new Layer
            {
                Name = _layerName,
                DataSource = _provider,
                Style = null,
            };

            _map.Map!.Layers.Add(_layer);
        }

        private readonly MapControl _map;
        private readonly string _layerName;

        private readonly List<MapMarkerDictionaryModel> _features = new();
        private readonly MemoryProvider _provider;
        private readonly Layer _layer;
        public Layer Layer { get { return _layer; } }

        public enum MarkerStatus
        {
            Normal,
            Warning, 
            Error,
            Offline
        }

        

        public bool Added(string id)
        {
            return _features.Any(x => x.Id == id);
        }

        public bool TryGetIdFromFeature(MIFeature feature, out string id)
        {
            var f = _features.FirstOrDefault(x => x.Features.Contains(feature));
            if (f != null)
            {
                id = f.Id;
                return true;
            }
            id = null;
            return false;
        }

        public void SetMarkerFocused(string id, bool focused)
        {
            ClearMarkerFocused();
            var f = _features.FirstOrDefault(x => x.Id == id);
            if (f != null) f.Focused = focused;
        }

        public void ClearMarkerFocused()
        {
            _features.ForEach(f => f.Focused = false);
        }

        private void UpdateFeatures()
        {
            _layer.DataSource = new MemoryProvider(_features.SelectMany(x => x.Features));
            _layer.DataHasChanged();
            _map.Refresh();
        }

        public void BringMarkersToFront()
        {
            var layers = _map.Map?.Layers;
            if (layers == null) return;

            // remove e re-adiciona a camada de marcadores no final da lista
            if (layers.Contains(_layer))
            {
                layers.Remove(_layer);
                layers.Add(_layer);
                _map.Refresh();
            }
        }

        public void AddMarker(string id, bool isBase, double? lat = null, double? lon = null, double? heading = null, System.Windows.Media.Color? color = null, string? label = null, StatusOperacao? status = null, bool? pulv = null, bool center = false)
        {
            if (string.IsNullOrWhiteSpace(id)) return;

            string lbl = label ?? id;

            var marker = _features.FirstOrDefault(x => x.Id == id);
            if (marker != null)
            {
                marker.UpdateData(lat: lat, lon: lon, heading: heading, label: label, color: color, status: status, pulverizando: pulv);
            }
            else
            {
                marker = new MapMarkerDictionaryModel()
                {
                    Id = id,
                    Features = new List<MIFeature>(),
                    Color = color ?? GetColorForMarker(id, isBase),
                    Heading = heading ?? 0,
                    Lat = lat ?? 0, 
                    Lon = lon ?? 0,
                    Label = lbl,
                    Seta = new List<GeometryFeature>(),
                    Status = status ?? StatusOperacao.NaoIniciado, 
                    Pulverizando = pulv ?? false, 
                    Focused = false
                };
                marker.CreateTrajectory(_map);
                marker.UpdateData();
                _features.Add(marker);
            }

            UpdateFeatures();

            if (center)
                _map.Map?.Navigator?.CenterOn(marker.Point.Point);
        }

        public void UpdateMarkerPosition(string id, double? lat = null, double? lon = null, double? heading = null, List<double[]>? predict = null)
        {
            if (string.IsNullOrWhiteSpace(id)) return;

            var marker = _features.FirstOrDefault(x => x.Id == id);
            if (marker == null) return;

            marker.UpdateData(lat: lat, lon: lon, heading: heading, predict: predict);

            UpdateFeatures();
        }

        public void UpdateMarkerInfo(string id, StatusOperacao? status = null, bool? pulv = null)
        {
            if (string.IsNullOrWhiteSpace(id)) return;

            var marker = _features.FirstOrDefault(x => x.Id == id);
            if (marker == null) return;

            marker.UpdateData(status: status, pulverizando: pulv);

            UpdateFeatures();
        }

        public void RemoveMarker(string id)
        {
            var marker = _features.FirstOrDefault(x => x.Id == id);
            if (marker == null) return;

            _features.Remove(marker);
            UpdateFeatures();
        }

        public class MapMarkerDictionaryModel
        {
            public void CreateTrajectory(MapControl _map)
            {
                _trajProvider = new MemoryProvider(_trajFeatures);
                _trajLayer = new Layer
                {
                    Name = $"traj_{Id}",
                    DataSource = _trajProvider,
                    Style = null
                };
                _map.Map!.Layers.Add(_trajLayer);
                _predProvider = new MemoryProvider(_predFeatures);
                _predLayer = new Layer
                {
                    Name = $"pred_{Id}",
                    DataSource = _predProvider,
                    Style = null
                };
                _map.Map!.Layers.Add(_predLayer);
            }

            public string Id { get; set; }
            public bool Focused { get; set; }
            public bool Pulverizando { get; set; }
            public PointFeature Point { get; set; }
            public List<MIFeature> Features { get; set; }
            public double Lat { get; set; }
            public double Lon { get; set; }
            public double Heading { get; set; }
            public string Label { get; set; }
            public System.Windows.Media.Color Color { get; set; }
            public StatusOperacao Status { get; set; }
            public List<GeometryFeature> Seta { get; set; }
            public Coordinate Position { get; set; }
            public List<double[]> Predict { get; set; }

            public void UpdateData(double? lat = null, double? lon = null, double? heading = null, string? label = null, System.Windows.Media.Color? color = null, bool? pulverizando = null, StatusOperacao? status = null, List<double[]>? predict = null)
            {
                Features.Clear();

                if (lat != null) Lat = (double)lat;
                if (lon != null) Lon = (double)lon;
                if (heading != null) Heading = (double)heading;
                if (label != null) Label = label;
                if (color != null) Color = (System.Windows.Media.Color)color;
                if (status != null) Status = (StatusOperacao)status;
                if (pulverizando != null) Pulverizando = (bool)pulverizando;
                if (predict != null) Predict = predict;

                var (x, y) = Mapsui.Projections.SphericalMercator.FromLonLat(Lon, Lat);
                var newPoint = new MPoint(x, y);

                UpsertHeadingFeature(newPoint, withArrowHead: true);

                Point = new PointFeature(newPoint);
                SetStyles();

                Features.Add(Point);
                Seta.ForEach(f => Features.Add(f));

                if (lat != null || lon != null)
                    UpdateRoverPosition();
                if (predict != null)
                    UpdatePredictTrajectory();
            }

            private void UpsertHeadingFeature(MPoint centerWorld, bool withArrowHead = true)
            {
                Seta.Clear();

                // 1) Comprimento constante em tela: px -> metros
                //var resolution = _map.Map?.Navigator?.Resolutions?.LastOrDefault() ?? 1.0; // m/px no WebMercator
                var resolution = 1.0;
                var lenPx = 9;                        // corpo da seta (ajuste fino: 12~20 px)
                var headPx = 6;                       // “asas” da seta (se withArrowHead = true)
                var len = lenPx * resolution;         // metros
                var headLen = headPx * resolution;    // metros

                // 2) 0° = Norte (↑). Se o seu 0° for Leste (→), troque sin/cos conforme comentário abaixo.
                var rad = Heading * Math.PI / 180.0;
                var dx = len * Math.Sin(rad);   // se 0° = Leste → use cos(rad)
                var dy = len * Math.Cos(rad);   // se 0° = Leste → use sin(rad)

                var p0 = centerWorld;
                var p1 = new MPoint(centerWorld.X + dx, centerWorld.Y + dy);

                // 3) Corpo da seta (linha principal)
                var mainLine = new LineString(new Coordinate[] { new Coordinate(p0.X, p0.Y), new Coordinate(p1.X, p1.Y) });

                var mainFeat = new GeometryFeature { Geometry = mainLine };
                SetHeadingStyle(mainFeat, Color);
                Seta.Add(mainFeat);

                // 5) (Opcional) cabeça da seta em “V”: duas linhas com ±θ a partir da ponta
                if (withArrowHead)
                {
                    var theta = 25 * Math.PI / 180.0; // abertura do V (~25°)
                                                      // perna esquerda
                    var dxL = headLen * Math.Sin(rad + Math.PI - theta);
                    var dyL = headLen * Math.Cos(rad + Math.PI - theta);
                    var pL = new MPoint(p1.X + dxL, p1.Y + dyL);
                    var leftLine = new LineString(new Coordinate[] { new Coordinate(p1.X, p1.Y), new Coordinate(pL.X, pL.Y) });

                    // perna direita
                    var dxR = headLen * Math.Sin(rad + Math.PI + theta);
                    var dyR = headLen * Math.Cos(rad + Math.PI + theta);
                    var pR = new MPoint(p1.X + dxR, p1.Y + dyR);
                    var rightLine = new LineString(new Coordinate[] { new Coordinate(p1.X, p1.Y), new Coordinate(pR.X, pR.Y) });

                    var fL = new GeometryFeature { Geometry = leftLine };
                    var fR = new GeometryFeature { Geometry = rightLine };
                    SetHeadingStyle(fL, Color);
                    SetHeadingStyle(fR, Color);

                    Seta.Add(fL);
                    Seta.Add(fR);
                }
            }

            private static void SetHeadingStyle(GeometryFeature f, System.Windows.Media.Color wpfColor)
            {
                if (f.Styles == null) f.Styles = new List<IStyle>(); else f.Styles.Clear();
                var c = new Mapsui.Styles.Color(wpfColor.R, wpfColor.G, wpfColor.B, 230);
                f.Styles.Add(new VectorStyle
                {
                    Line = new Pen(c, 2), // espessura em px na tela
                    Outline = null,
                });
            }

            private void SetStyles(double _pulseFactor = 1.0)
            {
                if (Point.Styles == null) Point.Styles = new List<IStyle>();
                else Point.Styles.Clear();

                // Pega o “visual” conforme o Status
                var (baseColor, statusGlyph, labelBackColor) = GetStatusVisual();

                // 1) Ponto central minúsculo (precisão)
                Point.Styles.Add(new SymbolStyle
                {
                    SymbolScale = 0.22,
                    Fill = new Brush(baseColor),
                    Outline = null
                });

                // 2) “Aura” simulando gradiente (3 círculos com alpha/escala crescentes)
                Point.Styles.Add(new SymbolStyle
                {
                    SymbolScale = _pulseFactor * 0.55,
                    Fill = new Brush(new Color(baseColor.R, baseColor.G, baseColor.B, 120)),
                    Outline = null
                });
                Point.Styles.Add(new SymbolStyle
                {
                    SymbolScale = _pulseFactor * 0.95,
                    Fill = new Brush(new Color(baseColor.R, baseColor.G, baseColor.B, 70)),
                    Outline = null
                });
                Point.Styles.Add(new SymbolStyle
                {
                    SymbolScale = _pulseFactor * 1.4,
                    Fill = new Brush(new Color(baseColor.R, baseColor.G, baseColor.B, 30)),
                    Outline = null
                });

                // 3) Rótulo do id (pequeno, acima do ponto)
                if (!string.IsNullOrWhiteSpace(Label))
                {
                    // texto: se tiver glyph, coloca na frente
                    var texto = string.IsNullOrEmpty(statusGlyph)
                        ? Label
                        : $"{Label} {statusGlyph}";

                    var backColor = labelBackColor ?? new Color(0, 0, 0, 140);

                    Point.Styles.Add(new LabelStyle
                    {
                        Text = texto,
                        ForeColor = Mapsui.Styles.Color.White,
                        BackColor = new Brush(backColor),
                        Offset = new Offset(0, -30),
                        Font = new Font { FontFamily = "Segoe UI Emoji", Size = 18 }
                    });
                }
            }

            private (Mapsui.Styles.Color baseColor, string statusGlyph, Mapsui.Styles.Color? labelBackColor) GetStatusVisual()
            {
                string glyph = "";
                Mapsui.Styles.Color? back = null;

                // Base default = cor do robô (personalizada)
                var baseColor = new Mapsui.Styles.Color(Color.R, Color.G, Color.B, Color.A);

                switch (Status)
                {
                    case StatusOperacao.NaoIniciado:
                        glyph = "⏳";
                        baseColor = new Mapsui.Styles.Color(150, 150, 150, 255);     // cinza médio
                        back = new Mapsui.Styles.Color(60, 60, 60, 160);             // cinza escuro translúcido
                        break;

                    case StatusOperacao.Parametrizando:
                        glyph = "🔧";
                        baseColor = new Mapsui.Styles.Color(40, 120, 255, 255);      // azul forte
                        back = new Mapsui.Styles.Color(100, 160, 255, 140);          // azul claro translúcido
                        break;

                    case StatusOperacao.Calibrando:
                        glyph = "🎯";
                        baseColor = new Mapsui.Styles.Color(160, 70, 255, 255);      // roxo vibrante
                        back = new Mapsui.Styles.Color(180, 120, 255, 140);          // roxo suave
                        break;

                    case StatusOperacao.Aguardando:
                        glyph = "💤";
                        baseColor = new Mapsui.Styles.Color(0, 110, 140, 255);       // azul petróleo
                        back = new Mapsui.Styles.Color(0, 150, 180, 140);            // turquesa suave
                        break;

                    case StatusOperacao.EmAndamento:
                        glyph = "▶";
                        baseColor = new Mapsui.Styles.Color(0, 220, 40, 255);        // verde limão
                        back = new Mapsui.Styles.Color(0, 200, 30, 140);             // verde limão translúcido
                        break;

                    case StatusOperacao.Parado:
                        glyph = "⏸";
                        baseColor = new Mapsui.Styles.Color(255, 180, 0, 255);       // amarelo dourado
                        back = new Mapsui.Styles.Color(255, 210, 80, 140);           // amarelo claro suaaave
                        break;

                    case StatusOperacao.Concluido:
                        glyph = "✔";
                        baseColor = new Mapsui.Styles.Color(0, 150, 60, 255);        // verde escuro
                        back = new Mapsui.Styles.Color(0, 130, 50, 140);             // verde escuro suave
                        break;

                    case StatusOperacao.Erro:
                        glyph = "⛔";
                        baseColor = new Mapsui.Styles.Color(220, 40, 40, 255);
                        back = new Mapsui.Styles.Color(120, 0, 0, 190);
                        break;

                    default:
                        glyph = "";
                        break;
                }

                return (baseColor, glyph, back);
            }


            #region TRAJETORIA

            private MemoryProvider _trajProvider;
            private Layer _trajLayer;
            private List<MIFeature> _trajFeatures { get; set; } = new List<MIFeature>();

            private VectorStyle CreateTrajectoryStyle()
            {
                if (Pulverizando)
                {
                    return new VectorStyle
                    {
                        Line = new Pen(Mapsui.Styles.Color.FromArgb(255, Color.R, Color.G, Color.B), 4)
                    };
                }
                else
                {
                    return new VectorStyle
                    {
                        Line = new Pen(Mapsui.Styles.Color.FromArgb(180, Color.R, Color.G, Color.B), 2)
                    };
                }
            }

            public void UpdateRoverPosition()
            {
                var (x, y) = Mapsui.Projections.SphericalMercator.FromLonLat(Lon, Lat);
                var newCoord = new Coordinate(x, y);
                if (Position == null) Position = newCoord;
                var line = new LineString(new[] { Position, newCoord });
                var gf = new GeometryFeature
                {
                    Geometry = line
                };
                gf["RoverId"] = Id;
                gf["Pulverizando"] = Pulverizando ? "1" : "0";
                gf.Styles.Add(CreateTrajectoryStyle());
                _trajFeatures.Add(gf);
                _trajLayer.DataSource = new MemoryProvider(_trajFeatures);
                _trajLayer.DataHasChanged();
                Position = newCoord;
            }

            #endregion

            #region SIMULACAO

            private MemoryProvider _predProvider;
            private Layer _predLayer;
            private List<MIFeature> _predFeatures { get; set; } = new List<MIFeature>();

            public void UpdatePredictTrajectory()
            {
                if (_predLayer == null || Predict == null || Predict.Count < 2)
                    return;

                _predFeatures.Clear();

                // Converte lista (lon, lat) -> coordenadas em SphericalMercator
                var coords = new List<Coordinate>();
                foreach (var lon_lat in Predict)
                {
                    double lon = lon_lat[0];
                    double lat = lon_lat[1];
                    var (x, y) = Mapsui.Projections.SphericalMercator.FromLonLat(lon, lat);
                    coords.Add(new Coordinate(x, y));
                }

                // Garante que tem pelo menos 2 pontos
                if (coords.Count < 2)
                    return;

                var line = new LineString(coords.ToArray());

                var gf = new GeometryFeature
                {
                    Geometry = line
                };

                gf["RoverId"] = Id;
                gf["Tipo"] = "Predict";

                gf.Styles.Add(CreatePredictStyle());

                _predFeatures.Add(gf);

                _predLayer.DataSource = new MemoryProvider(_predFeatures);
                _predLayer.DataHasChanged();
            }

            private IStyle CreatePredictStyle()
            {
                return new VectorStyle
                {
                    Line = new Pen
                    {
                        Color = Mapsui.Styles.Color.Lime,   // verde-limão
                        Width = 2,
                        PenStyle = PenStyle.Dash           // linha tracejada
                    }
                };
            }

            #endregion

        }

        public class MarkerClickedEventArgs : EventArgs
        {
            public string MarkerId { get; }

            public MarkerClickedEventArgs(string markerId)
            {
                MarkerId = markerId;
            }
        }




        private readonly Dictionary<string, System.Windows.Media.Color> _markerColors = new();
        private readonly HashSet<System.Windows.Media.Color> _usedColors = new();

        // Paleta de cores "legíveis" no mapa
        private readonly List<System.Windows.Media.Color> _palette = new()
        {
            System.Windows.Media.Colors.DeepSkyBlue,
            System.Windows.Media.Colors.LimeGreen,
            System.Windows.Media.Colors.Yellow,
            System.Windows.Media.Colors.Orange,
            System.Windows.Media.Colors.MediumPurple,
            System.Windows.Media.Colors.Cyan,
            System.Windows.Media.Colors.Magenta,
            System.Windows.Media.Colors.Gold,
            System.Windows.Media.Colors.SpringGreen,
            System.Windows.Media.Colors.Coral,
            System.Windows.Media.Colors.DodgerBlue,
            System.Windows.Media.Colors.HotPink
        };

        private readonly System.Windows.Media.Color _baseColor = System.Windows.Media.Colors.Red;

        public System.Windows.Media.Color GetColorForMarker(string markerId, bool isBase = false)
        {
            if (isBase)
                return _baseColor;

            // Já tem cor atribuída?
            if (_markerColors.TryGetValue(markerId, out var existing))
                return existing;

            // Pega a próxima cor disponível da paleta
            var color = GetNextAvailableColor();

            _markerColors[markerId] = color;
            _usedColors.Add(color);

            return color;
        }

        private System.Windows.Media.Color GetNextAvailableColor()
        {
            // 1) Tenta achar uma cor da paleta que ainda não foi usada
            var free = _palette.FirstOrDefault(c => !_usedColors.Contains(c));

            if (free != default(System.Windows.Media.Color))
                return free;

            // 2) Se todas as cores foram usadas, gera uma nova pseudo-aleatória
            //    com base na quantidade atual de marcadores (espalhando no círculo de matiz)
            int n = _markerColors.Count + 1;
            double hue = (n * 47) % 360; // 47 para “espalhar” melhor

            return ColorFromHsv(hue, 0.9, 0.9);
        }

        private System.Windows.Media.Color ColorFromHsv(double hue, double saturation, double value)
        {
            // Conversão básica HSV -> RGB
            int hi = Convert.ToInt32(Math.Floor(hue / 60)) % 6;
            double f = hue / 60 - Math.Floor(hue / 60);

            value = value * 255;
            byte v = (byte)value;
            byte p = (byte)(value * (1 - saturation));
            byte q = (byte)(value * (1 - f * saturation));
            byte t = (byte)(value * (1 - (1 - f) * saturation));

            return hi switch
            {
                0 => System.Windows.Media.Color.FromArgb(255, v, t, p),
                1 => System.Windows.Media.Color.FromArgb(255, q, v, p),
                2 => System.Windows.Media.Color.FromArgb(255, p, v, t),
                3 => System.Windows.Media.Color.FromArgb(255, p, q, v),
                4 => System.Windows.Media.Color.FromArgb(255, t, p, v),
                _ => System.Windows.Media.Color.FromArgb(255, v, p, q),
            };
        }
    
    }

    

}