using Microsoft.VisualStudio.TestTools.UnitTesting;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.Core.ExtensionMethods;
using Tango.Core.IO;
using Tango.Pulse;

namespace Tango.UnitTesting.Pulse
{
    [TestClass]
    [TestCategory("Pulse")]
    public class Pulse_TST
    {
        [TestMethod]
        public void Validate_Reading_Writing()
        {
            String abcFile = Path.Combine(Helper.GetResourcePath(), "Pulse", "ABC.dst");

            TwnFile twnFile = new TwnFile();
            twnFile.Name = "My design";
            twnFile.NumberOfCopies = 1;
            twnFile.MediaID = 0;
            twnFile.SpoolingMethod = SpoolingMethods.SpoolPerSegment;

            Bitmap thumbnail = new Bitmap(1280, 720);
            using (Graphics g = Graphics.FromImage(thumbnail))
            {
                g.Clear(Color.Transparent);
                g.DrawString("My design", new Font(new FontFamily("Arial"), 70), Brushes.Red, 1280 / 2, 720 / 2);
            }
            twnFile.Thumbnail = thumbnail;

            twnFile.EmbroideryFileFormat = "dst";
            twnFile.EmbroideryFile = File.ReadAllBytes(abcFile);

            //Add gradient segment.
            TwnSegment gradientSegment = new TwnSegment();
            gradientSegment.Length = 10; //10 centimeters.
            gradientSegment.BrushStops.Add(new TwnStop(255, 0, 0, 0)); //0%
            gradientSegment.BrushStops.Add(new TwnStop(0, 0, 255, 1)); //100%
            twnFile.Segments.Add(gradientSegment);

            //Add solid segment.
            TwnSegment solidSegment = new TwnSegment();
            solidSegment.Length = 20;
            solidSegment.BrushStops.Add(new TwnStop(0, 255, 0, 0));
            twnFile.Segments.Add(solidSegment);

            //Validate reading/writing.
            using (MemoryStream ms = new MemoryStream())
            {
                twnFile.ToStream(ms);

                ms.Position = 0;

                TwnFile twnFile2 = TwnFile.FromStream(ms);

                String serialized = JsonConvert.SerializeObject(twnFile, Formatting.Indented);

                String deserialized = JsonConvert.SerializeObject(twnFile2, Formatting.Indented);

                Assert.AreEqual(serialized, deserialized);
            }
        }

        [TestMethod]
        public void Read_Pulse_Sample_File()
        {
            String sampleFile = Path.Combine(Helper.GetResourcePath(), "Pulse", "Technical_Test_15.9.19.twn");
            TwnFile twnFile = TwnFile.FromFile(sampleFile);
            var imgFile = TemporaryManager.Default.CreateFile(".png");

            String json = twnFile.ToJsonString();

            twnFile.Thumbnail.Save(imgFile, ImageFormat.Png);

            Helper.ShowInExplorer(imgFile);
        }

        [TestMethod]
        public void Create_Twn_Sample_File()
        {
            String abcFile = Path.Combine(Helper.GetResourcePath(), "Pulse", "ABC.dst");

            TwnFile twnFile = new TwnFile();
            twnFile.Name = "My design";
            twnFile.NumberOfCopies = 1;
            twnFile.MediaID = 0;
            twnFile.SpoolingMethod = SpoolingMethods.SpoolPerSegment;

            Bitmap thumbnail = new Bitmap(1280, 720);
            using (Graphics g = Graphics.FromImage(thumbnail))
            {
                g.Clear(Color.Gray);
                g.DrawString("My design", new Font(new FontFamily("Arial"), 70), Brushes.Red, 1280 / 2, 720 / 2);
            }
            twnFile.Thumbnail = thumbnail;

            twnFile.EmbroideryFileFormat = "dst";
            twnFile.EmbroideryFile = File.ReadAllBytes(abcFile);

            //Add gradient segment.
            TwnSegment gradientSegment = new TwnSegment();
            gradientSegment.Length = 100 * 10; //10 meters.
            gradientSegment.BrushStops.Add(new TwnStop(255, 0, 0, 0)); //0%
            gradientSegment.BrushStops.Add(new TwnStop(0, 0, 255, 1)); //100%
            twnFile.Segments.Add(gradientSegment);

            //Add solid segment.
            TwnSegment solidSegment = new TwnSegment();
            solidSegment.Length = 100 * 20; //20 meters.
            solidSegment.BrushStops.Add(new TwnStop(0, 255, 0, 0));
            twnFile.Segments.Add(solidSegment);

            var twnFilePath = TemporaryManager.Default.CreateFile(".twn");

            twnFile.ToFile(twnFilePath);

            twnFilePath.Display();
        }

        [TestMethod]
        public void Compose_Artificial_Twn_File()
        {
            String dstFile = Path.Combine(Helper.GetResourcePath(), "Pulse", "TCap", "T-CAP.dst");
            String imgSolidFile = Path.Combine(Helper.GetResourcePath(), "Pulse", "TCap", "T_Cap_Solid.png");
            String imgGradientFile = Path.Combine(Helper.GetResourcePath(), "Pulse", "TCap", "T_Cap.png");

            TwnFile twnFile = new TwnFile();
            twnFile.Version = 1f;
            twnFile.Name = "T Cap Solid";
            twnFile.NumberOfCopies = 1;
            twnFile.MediaID = 0;
            twnFile.SpoolingMethod = SpoolingMethods.SingleSpool;

            twnFile.EmbroideryFile = File.ReadAllBytes(dstFile);
            twnFile.EmbroideryFileFormat = "dst";


            //Generate solid.
            Bitmap thumbnail = new Bitmap(imgSolidFile);
            twnFile.Thumbnail = thumbnail;

            twnFile.Segments.Add(CreateSolidSegment(10, 252, 224, 87));
            twnFile.Segments.Add(CreateSolidSegment(10, 251, 168, 45));
            twnFile.Segments.Add(CreateSolidSegment(10, 237, 19, 117));
            twnFile.Segments.Add(CreateSolidSegment(10, 234, 89, 56));

            var tempFolder = TemporaryManager.Default.CreateFolder();
            twnFile.ToFile(Path.Combine(tempFolder, "t-cap solid.twn"));

            twnFile.Segments.Clear();

            //Generate gradient.
            twnFile.Name = "T Cap Gradient";

            thumbnail = new Bitmap(imgGradientFile);
            twnFile.Thumbnail = thumbnail;

            twnFile.Segments.Add(CreateGradientSegment(10, 237, 19, 117, 251, 168, 45));
            twnFile.Segments.Add(CreateGradientSegment(10, 237, 19, 117, 251, 168, 45));
            twnFile.Segments.Add(CreateGradientSegment(10, 139, 48, 145, 251, 168, 45));
            twnFile.Segments.Add(CreateGradientSegment(10, 139, 48, 145, 242, 141, 172));

            twnFile.ToFile(Path.Combine(tempFolder, "t-cap gradient.twn"));

            tempFolder.Display();
        }

        private TwnSegment CreateSolidSegment(float meter, byte r, byte g, byte b)
        {
            var segment = new TwnSegment()
            {
                Length = meter * 100,
                BrushStops = new List<TwnStop>()
                {
                    new TwnStop()
                    {
                         R = r,
                         G = g,
                         B = b
                    },
                }
            };

            return segment;
        }

        private TwnSegment CreateGradientSegment(float meter, byte r1, byte g1, byte b1, byte r2, byte g2, byte b2)
        {
            var segment = new TwnSegment()
            {
                Length = meter * 100,
                BrushStops = new List<TwnStop>()
                {
                    new TwnStop()
                    {
                         R = r1,
                         G = g1,
                         B = b1,
                         Offset = 0
                    },
                    new TwnStop()
                    {
                         R = r2,
                         G = g2,
                         B = b2,
                         Offset = 1
                    },
                }
            };

            return segment;
        }
    }
}