using ImageHandlingLibrary.InterFaces;
using ImageHandlingLibrary.Models;
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 System.Windows.Media.Imaging;

namespace ImageHandlingLibrary
{
    public class Filing : IFiling
    {
        private readonly IRegistring _registring;

        public Filing(IRegistring registring)
        {
            _registring = registring;
        }
        public BitmapImage ConvertFromDrawImage(System.Drawing.Image _image)
        {
            using (var ms = new MemoryStream())
            {
                //System.Drawing.Image.FromFile(@"D:\CsharpDevelop\PictureHandlingProject\pictures\AgueroVillage.JPG").Save(ms, ImageFormat.Bmp);
                _image.Save(ms, ImageFormat.Bmp);
                ms.Seek(0, SeekOrigin.Begin);

                var bitmapImage = new BitmapImage();
                bitmapImage.BeginInit();
                bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
                bitmapImage.StreamSource = ms;
                bitmapImage.EndInit();

                return bitmapImage;
            }
        }

        public string ShowText()
        {
            var output = _registring.GetRegistryRootDir();
            return $"Root directory value is {output} OBS Test!!";
        }

        public List<LocalPicture> CreateListBoxDataSource(List<FileInfo> fileInfos, string rootCatalog)
        {

            var outPut = new List<LocalPicture>();

            foreach (var fi in fileInfos)
            {
                var bufPicture = new LocalPicture();

                bufPicture.RootPosition = rootCatalog;

                bufPicture.PictureFileName = fi.Name;

                bufPicture.InitialPath = fi.DirectoryName;

                bufPicture.AktImage = Image.FromFile(bufPicture.PictureFullPath);

                bufPicture.AktImWidth = bufPicture.AktImage.Width;
                bufPicture.AktImHeight = bufPicture.AktImage.Height;

                bufPicture.CreatedDate = TakenDate(bufPicture.AktImage);

                outPut.Add(bufPicture);
            }


            return FillupDateGaps(outPut);
        }

        private string TakenDate(Image aktImage)
        {
            string sPropDatTaken = "";
            for (int i = 0; i < aktImage.PropertyIdList.Length; i++)
            {
                if (aktImage.PropertyIdList[i] == 306)
                {
                    for (int j = 0; j < aktImage.PropertyItems[i].Len; j++)
                    {
                        sPropDatTaken += Convert.ToChar(aktImage.PropertyItems[i].Value[j]);
                    }
                }
            }
            return sPropDatTaken;
        }

        private List<LocalPicture> FillupDateGaps(List<LocalPicture> inPut)
        {
            var picReg = new SortedList<string, LocalPicture>();
            foreach (var pict in inPut)
            {
                picReg.Add(pict.PictureFileName, pict);
            }
            var tmpPicture = new LocalPicture();
            tmpPicture.CreatedDate = "";
            Stack<string> stack = new Stack<string>();
            var outPut = new List<LocalPicture>();

            foreach (KeyValuePair<string, LocalPicture> lPic in picReg)
            {
                if (lPic.Value.CreatedDate == "")
                {
                    if (tmpPicture.CreatedDate != "")
                    {
                        lPic.Value.CreatedDate = tmpPicture.CreatedDate;
                        lPic.Value.CreatedDateChanged = true;
                        outPut.Add(lPic.Value);
                    }
                    else
                    {
                        stack.Push(lPic.Key);
                    }
                }
                else
                {
                    tmpPicture = lPic.Value;
                    while (stack.Count > 0)
                    {
                        var picRegKey = stack.Pop();
                        picReg[picRegKey].CreatedDate = tmpPicture.CreatedDate;
                        picReg[picRegKey].CreatedDateChanged = true;
                        outPut.Add(picReg[picRegKey]);
                    }
                    outPut.Add(lPic.Value);
                }
            }
            return outPut;
        }
    }
}