using System;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
using JD.Serialization;
using JD.Timeline.Model;
using TeaBox.Macros;

namespace JDSongConverter.Tasks
{
    /// <summary>
    /// Converts all pictograms from tga to png and updates dance tape
    /// </summary>
    public class ConvertPictogramsToPngTask : Task
    {
        public override string Name
        {
            get { return "Convert pictograms from .tga to .png"; }
            set { }
        }

        public override string ProgressText
        {
            get { return "Converting pictograms from .tga to .png"; }
        }

        public override TaskResult Process(IExecutionContext executionContext)
        {
            var pictoOutputDir = AppDefinitions.Default.AbsoluteMapPath(MapPathType.PictosDir, Context.OutputMap.Folder, Context.Song.Name, JDSongVersion.JD2015, JDFolderLayout.Engine);
            var dtapeFile = AppDefinitions.Default.AbsoluteMapPath(MapPathType.DanceTapeFile, Context.OutputMap.Folder, Context.Song.Name, JDSongVersion.JD2015, JDFolderLayout.Engine);

            var tape = Tape.CreateTape(dtapeFile);
            foreach (var picto in tape.Clips.OfType<PictogramClip>())
            {
                var newPath = Regex.Replace(picto.PictoPath.getAbsolute(), "tga", "png", RegexOptions.IgnoreCase);
                picto.PictoPath = new JD.Serialization.Path(newPath);
            }
            tape.Save(dtapeFile);

            var images = System.IO.Directory.EnumerateFiles(pictoOutputDir, "*.tga").ToList();
            foreach (var imageAsTga in images)
            {
                string imageAsPng = System.IO.Path.ChangeExtension(imageAsTga, "png");
                try
                {

                    using (var image = JD.Core.Drawing.ImageUtility.LoadBitmap(imageAsTga))
                    {
                        image.Save(imageAsPng);
                    }
                }
                catch (Exception)
                {
                    return TaskResult.Error;
                }
                System.IO.File.Delete(imageAsTga);

                string tfiForTga = imageAsTga + ".tfi";
                string tfiForPng = imageAsPng + ".tfi";
                if (File.Exists(tfiForTga))
                {
                    File.Move(tfiForTga, tfiForPng);
                }
            }
            return TaskResult.Ok;
        }
    }
}