using System;
using System.Collections.Generic;
using System.Linq;

namespace DatabaseExport
{
    public class Zone //: Common.BindableBase
    {
        public string Name { get; set; }

        public string Description { get; set; }

        public string Image { get; set; }

        public TemplateZone ISODllZone { get; }

        public Zone(TemplateZone z, TestObjectTemplate template)
        {
            ISODllZone = z;

            if (null == z || null == z.Description)
            {
                Description = "";
            }
            else
            {
                Description = z.Description;
            }
            Image = z.Picture;
            var path = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "ZonePictures");

            //if (string.IsNullOrEmpty(Image)) { Image = "H3_2_11.png"; }
            if (!string.IsNullOrEmpty(Image))
            {
                path = System.IO.Path.Combine(path, Image);
                if (!System.IO.File.Exists(path))
                {
                    PictureIndex = -1;
                }
                else
                {
                    var src = new System.Windows.Media.Imaging.BitmapImage();
                    src.BeginInit();
                    src.UriSource = new Uri(path, UriKind.Absolute);
                    try
                    {
                        src.EndInit();
                        PictureSource = src;
                        _pictureIndex = AllPictures.ToList().IndexOf(Image);
                    }
                    catch
                    {
                        PictureIndex = -1;
                    }
                }
            }
            Name = z.ZoneName;
            _regions = new List<Region>();
            foreach (var r in z.TemplateRegions)
            {
                var region = new Region(template, r);
                _regions.Add(region);
            }
        }

        public class FileInfoComparer : IComparer<System.IO.FileInfo>
        {
            int IComparer<System.IO.FileInfo>.Compare(System.IO.FileInfo left, System.IO.FileInfo right)
            {
                if (left == right)
                {
                    return 0;
                }
                if (left == null)
                {
                    return -1;
                }
                if (right == null)
                {
                    return 1;
                }
                return left.FullName.CompareTo(right.FullName);
            }
        }

        private List<System.IO.FileInfo> _fileNames = null;

        public string[] AllPictures
        {
            get
            {
                if (null == _fileNames)
                {
                    var files = new List<string>();
                    files.AddRange(System.IO.Directory.EnumerateFiles(
                        System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "ZonePictures")));
                    _fileNames = new List<System.IO.FileInfo>();
                    foreach (var file in files)
                    {
                        _fileNames.Add(new System.IO.FileInfo(file));
                    }
                    _fileNames.Sort(new FileInfoComparer());
                }
                var l = new List<string>();
                foreach (var fi in _fileNames)
                {
                    l.Add(fi.Name);
                }
                return l.ToArray();
            }
        }

        private int _pictureIndex = -1;

        public int PictureIndex
        {
            get => _pictureIndex;
            set
            {
                if (value < 0)
                {
                    PictureSource = null;
                }
                else
                {
                    var src = new System.Windows.Media.Imaging.BitmapImage();
                    src.BeginInit();
                    src.UriSource = new Uri(_fileNames[value].FullName, UriKind.Absolute);
                    src.EndInit();
                    PictureSource = src;
                }
                _pictureIndex = value;
                //if (null != _template) { _template.MarkChanged(Tags.PictureIndex.ToString()); }
            }
        }

        public string GetPictureName()
        {
            return _pictureIndex < 0 ? "" : _fileNames[_pictureIndex].Name;
        }

        public System.Windows.Media.ImageSource PictureSource { get; set; } = null;

        private List<Region> _regions = new List<Region>();

        public Region[] Regions
        {
            get => _regions.ToArray();
            set => _regions = new List<Region>(value);
        }
    }
}