namespace ExampleCodeSnippets
{
    using cd = CreatingData;

    public class SymbolRotationTheming
    {
        /// <summary>
        /// Name of the column, which contains the rotation angle in degrees [0°, 360°]
        /// </summary>
        public System.String StyleRotationColumn { get; set; }

        /// <summary>
        /// Default vector style from which parts are to be modified
        /// </summary>
        public SharpMap.Styles.VectorStyle DefaultStyle { get; set; }

        /// <summary>
        /// Creates an instance of this class
        /// </summary>
        /// <param name="styleRotationColumn">Name of the column, which contains the rotation angle in degrees [0°, 360°]</param>
        public SymbolRotationTheming(System.String styleRotationColumn)
            :this(styleRotationColumn, new SharpMap.Styles.VectorStyle())
        {
        }

        /// <summary>
        /// Creates an instance of this class
        /// </summary>
        /// <param name="styleRotationColumn">Name of the column, which contains the rotation angle in degrees [0°, 360°]</param>
        /// <param name="defaultStyle">Default vector style from which parts are to be modified</param>
        public SymbolRotationTheming(System.String styleRotationColumn, SharpMap.Styles.VectorStyle defaultStyle)
        {
            StyleRotationColumn = styleRotationColumn;
            DefaultStyle = defaultStyle;
        }

        private static SharpMap.Styles.VectorStyle CloneStyle(SharpMap.Styles.VectorStyle styleToClone)
        {
            SharpMap.Styles.VectorStyle style =
                new SharpMap.Styles.VectorStyle
                    {
                        Enabled = styleToClone.Enabled,
                        MinVisible = styleToClone.MinVisible,
                        MaxVisible = styleToClone.MaxVisible,
                        Line = styleToClone.Line.Clone() as System.Drawing.Pen,
                        Fill = styleToClone.Fill.Clone() as System.Drawing.Brush,
                        Outline = styleToClone.Outline.Clone() as System.Drawing.Pen,
                        EnableOutline = styleToClone.EnableOutline,
                        Symbol = styleToClone.Symbol.Clone() as System.Drawing.Bitmap,
                        SymbolOffset = styleToClone.SymbolOffset,
                        SymbolRotation = styleToClone.SymbolRotation,
                        SymbolScale = styleToClone.SymbolScale
                    };

            return style;
        }

        public SharpMap.Styles.VectorStyle GetRotatedSymol(SharpMap.Data.FeatureDataRow row)
        {
            if (!System.String.IsNullOrEmpty(StyleRotationColumn))
                try
                {
                    SharpMap.Styles.VectorStyle dataStyle = CloneStyle(DefaultStyle);
                    dataStyle.SymbolRotation = System.Convert.ToSingle(row[StyleRotationColumn]);
                    return dataStyle;
                }
                catch { }

            return null;
        }
    }

    public class SymbolFromFeatureDataRowTheming
    {
        /// <summary>
        /// Name of the column, which contains the rotation angle in degrees [0°, 360°]
        /// </summary>
        public System.String SymbolColumn { get; set; }

        /// <summary>
        /// Default vector style from which parts are to be modified
        /// </summary>
        public SharpMap.Styles.VectorStyle DefaultStyle { get; set; }

        /// <summary>
        /// Creates an instance of this class
        /// </summary>
        /// <param name="symbolColumn">Name of the column, which contains the symbol</param>
        public SymbolFromFeatureDataRowTheming(System.String symbolColumn)
            : this(symbolColumn, new SharpMap.Styles.VectorStyle())
        {
        }

        /// <summary>
        /// Creates an instance of this class
        /// </summary>
        /// <param name="styleRotationColumn">Name of the column, which contains the symbol</param>
        /// <param name="defaultStyle">Default vector style from which parts are to be modified</param>
        public SymbolFromFeatureDataRowTheming(System.String styleRotationColumn, SharpMap.Styles.VectorStyle defaultStyle)
        {
            SymbolColumn = styleRotationColumn;
            DefaultStyle = defaultStyle;
        }

        private static SharpMap.Styles.VectorStyle CloneStyle(SharpMap.Styles.VectorStyle styleToClone)
        {
            SharpMap.Styles.VectorStyle style =
                new SharpMap.Styles.VectorStyle
                {
                    Enabled = styleToClone.Enabled,
                    MinVisible = styleToClone.MinVisible,
                    MaxVisible = styleToClone.MaxVisible,
                    Line = styleToClone.Line.Clone() as System.Drawing.Pen,
                    Fill = styleToClone.Fill.Clone() as System.Drawing.Brush,
                    Outline = styleToClone.Outline.Clone() as System.Drawing.Pen,
                    EnableOutline = styleToClone.EnableOutline,
                    Symbol = styleToClone.Symbol.Clone() as System.Drawing.Bitmap,
                    SymbolOffset = styleToClone.SymbolOffset,
                    SymbolRotation = styleToClone.SymbolRotation,
                    SymbolScale = styleToClone.SymbolScale
                };

            return style;
        }

        public SharpMap.Styles.VectorStyle GetRotatedSymol(SharpMap.Data.FeatureDataRow row)
        {
            if (!System.String.IsNullOrEmpty(SymbolColumn))
                try
                {
                    SharpMap.Styles.VectorStyle dataStyle = CloneStyle(DefaultStyle);
                    if (!row.IsNull(SymbolColumn))
                    {
                        dataStyle.Symbol = new System.Drawing.Bitmap(
                            new System.IO.MemoryStream((byte[]) row[SymbolColumn]));
                    }
                    return dataStyle;
                }
                catch { }

            return null;
        }
    }

    [NUnit.Framework.TestFixture]
    public class SymbolRotationThemingTest
    {
        private static readonly System.Random _randomNumberGenerator = new System.Random();
        static System.Double[] GetRandomOrdinates(System.Int32 size, System.Double min, System.Double max)
        {
            System.Double[] arr = new System.Double[size];
            System.Double width = max - min;
            for(System.Int32 i = 0; i < size; i++)
            {
                System.Double randomValue = _randomNumberGenerator.NextDouble();
                arr[i] = min + randomValue*width;
            }
            return arr;
        }
        
        [NUnit.Framework.Test]
        public void TestSymbolRotationTheming()
        {
            //Create a map
            SharpMap.Map map = new SharpMap.Map(new System.Drawing.Size(720,360));
            
            //Create some random sample data
            SharpMap.Data.FeatureDataTable fdt =
                cd.CreatePointFeatureDataTableFromArrays(cd.GetRandomOrdinates(80, -180, 180),
                                                         cd.GetRandomOrdinates(80, -90, 90), null);

            //Add rotation column and fill with random rotation values
            fdt.Columns.Add("Rotation", typeof (System.Double));
            foreach (SharpMap.Data.FeatureDataRow row in fdt.Rows)
                row["Rotation"] = _randomNumberGenerator.NextDouble()*360d;


            //Create layer and datasource
            SharpMap.Layers.VectorLayer vl = new SharpMap.Layers.VectorLayer("Points", new SharpMap.Data.Providers.GeometryFeatureProvider(fdt));
            
            //Create default style
            SharpMap.Styles.VectorStyle defaultStyle = new SharpMap.Styles.VectorStyle();
            defaultStyle.Symbol = new System.Drawing.Bitmap(@"..\..\..\DemoWinForm\Resources\flag.png");
            defaultStyle.SymbolScale = 0.5f;

            //Create theming class and apply to layer
            SymbolRotationTheming srt = new SymbolRotationTheming("Rotation", defaultStyle);
            vl.Theme = new SharpMap.Rendering.Thematics.CustomTheme(srt.GetRotatedSymol);

            map.Layers.Add(vl);
            map.ZoomToExtents();
            System.Drawing.Image mapImage = map.GetMap();
            mapImage.Save("SymbolRotation.bmp");
        }
    }

    [NUnit.Framework.TestFixture]
    public class SymbolFromFeatureDataRowTest
    {
        //private static readonly System.Random _randomNumberGenerator = new System.Random();
        //static System.Double[] GetRandomOrdinates(System.Int32 size, System.Double min, System.Double max)
        //{
        //    System.Double[] arr = new System.Double[size];
        //    System.Double width = max - min;
        //    for (System.Int32 i = 0; i < size; i++)
        //    {
        //        System.Double randomValue = _randomNumberGenerator.NextDouble();
        //        arr[i] = min + randomValue * width;
        //    }
        //    return arr;
        //}

        [NUnit.Framework.Test]
        public void TestSymbolSelectionTheming()
        {
            //Create a map
            SharpMap.Map map = new SharpMap.Map(new System.Drawing.Size(720, 360));

            //Create some random sample data
            SharpMap.Data.FeatureDataTable fdt =
                cd.CreatePointFeatureDataTableFromArrays(cd.GetRandomOrdinates(80, -180, 180),
                                                         cd.GetRandomOrdinates(80, -90, 90), null);

            //Add rotation column and fill with random rotation values
            fdt.Columns.Add("Symbol", typeof(System.Byte[]));
            foreach (SharpMap.Data.FeatureDataRow row in fdt.Rows)
                row["Symbol"] = RandomSymbol((int)System.Math.Floor(cd.RandomNumberGenerator.NextDouble() * 360d));


            //Create layer and datasource
            SharpMap.Layers.VectorLayer vl = new SharpMap.Layers.VectorLayer("Points", new SharpMap.Data.Providers.GeometryFeatureProvider(fdt));

            //Create default style
            SharpMap.Styles.VectorStyle defaultStyle = new SharpMap.Styles.VectorStyle();
            defaultStyle.Symbol = new System.Drawing.Bitmap(@"..\..\..\DemoWinForm\Resources\flag.png");
            defaultStyle.SymbolScale = 0.5f;

            //Create theming class and apply to layer
            SymbolFromFeatureDataRowTheming srt = new SymbolFromFeatureDataRowTheming("Symbol", defaultStyle);
            vl.Theme = new SharpMap.Rendering.Thematics.CustomTheme(srt.GetRotatedSymol);

            map.Layers.Add(vl);
            map.ZoomToExtents();
            System.Drawing.Image mapImage = map.GetMap();
            mapImage.Save("SymbolFromFDR.bmp");
        }

        private byte[] RandomSymbol(int number)
        {
            number = number%360;
            string text ="";
            System.Drawing.Brush brush = null;
            if (number < 60)
                return null;
            if (number < 120)
            {
                text = "<120";
                brush = System.Drawing.Brushes.DarkGreen;
            }
            else if(number < 240)
            {
                text = number.ToString();
                brush = System.Drawing.Brushes.Orange;
            }
            else
            {
                text = ">240";
                brush = System.Drawing.Brushes.Red;
            }

            System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(120, 60);
            System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bmp);
            System.Drawing.RectangleF size = new System.Drawing.RectangleF(0f, 0f, 120f, 60f);
            g.FillRectangle(System.Drawing.Brushes.White, size);
            var sf = new System.Drawing.StringFormat(System.Drawing.StringFormatFlags.NoWrap)
                         {Alignment = System.Drawing.StringAlignment.Center};

            g.DrawString(text, new System.Drawing.Font("Arial", 24), brush, size, sf);
            g.Flush();
            g.Dispose();
            var ms = new System.IO.MemoryStream();
            bmp.MakeTransparent(System.Drawing.Color.White);
            bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
            return ms.ToArray();
        }
    }

    public class TestExternalData
    {
        public void DoTest()
        {
            SharpMap.Data.Providers.ShapeFile sf = new SharpMap.Data.Providers.ShapeFile("cities.shp");
            SharpMap.Data.FeatureDataSet fds = new SharpMap.Data.FeatureDataSet();
            sf.ExecuteIntersectionQuery(sf.GetExtents(), fds);
            SharpMap.Data.Providers.GeometryFeatureProvider gfp =
                new SharpMap.Data.Providers.GeometryFeatureProvider(fds.Tables[0]);

            System.Data.DataTable dt = new System.Data.DataTable("external");
            dt.Columns.Add("city", typeof (string));
            dt.Columns.Add("males", typeof (int));
            dt.Columns.Add("females", typeof (int));


        }
    }
}