using System.Collections.Generic;
using System.Drawing;
using GisSharpBlog.NetTopologySuite.Index.Bintree;
using NUnit.Framework;
using SharpMap.Api;
using SharpMap.Rendering.Thematics;
using SharpMap.Styles;

namespace SharpMap.Tests.Rendering.Thematics
{
    [TestFixture]
    public class QuantityThemeTest
    {
        [Test]
        public void QuantityThemeColorTest()
        {
            var defaultStyle = GenerateVectorStyle(Brushes.Black);
            var quantityTheme = new QuantityTheme("test", defaultStyle);

            var redStyle = GenerateVectorStyle(Brushes.Red);
            var whiteStyle = GenerateVectorStyle(Brushes.White);
            var blueStyle = GenerateVectorStyle(Brushes.Blue);

            //add styles in random order
            quantityTheme.AddStyle(redStyle, new Interval(0.0, 1.0));
            quantityTheme.AddStyle(blueStyle, new Interval(2.0, 3.0));
            quantityTheme.AddStyle(whiteStyle, new Interval(1.0, 2.0));
            quantityTheme.NoDataValues = new[]
            {
                -999.0
            };

            //value within interval
            Assert.IsTrue(CompareRGBColor(Color.Red, quantityTheme.GetFillColor(0.5)));
            Assert.IsTrue(CompareRGBColor(Color.White, quantityTheme.GetFillColor(1.5)));
            Assert.IsTrue(CompareRGBColor(Color.Blue, quantityTheme.GetFillColor(2.5)));

            //no data value
            Assert.IsTrue(CompareRGBColor(Pens.Transparent.Color, quantityTheme.GetFillColor(-999.0)));
        }

        [Test]
        public void CloneQuantityThemeWithNoDataValues()
        {
            var quantityTheme = new QuantityTheme("aa", new VectorStyle())
            {
                NoDataValues = new List<double>
                {
                    -9999
                }
            };
            var quantityThemeClone = quantityTheme.Clone();

            Assert.AreEqual(quantityTheme.NoDataValues, ((QuantityTheme) quantityThemeClone).NoDataValues);
        }

        // Some test objects the tests can use

        private static IStyle GenerateVectorStyle(Brush brush)
        {
            return new VectorStyle
            {
                Line = new Pen(Color.Red, 2),
                Outline = new Pen(Color.Blue, 3),
                EnableOutline = true,
                Fill = brush
            };
        }

        private static bool CompareRGBColor(Color color, Color fillColor)
        {
            return color.R == fillColor.R && color.G == fillColor.G && color.B == fillColor.B;
        }
    }
}