C.B.R.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using CBR.Core.Models;
using CBR.Core.Helpers;
using System.IO;

namespace CBR.Core.Services
{
    /// <summary>
    /// Provide access to the workspace settings
    /// </summary>
    public class WorkspaceService
    {
        #region ----------------SINGLETON----------------

		public static readonly WorkspaceService Instance = new WorkspaceService();

		/// <summary>
		/// Private constructor for singleton pattern
		/// </summary>
        private WorkspaceService()
		{
		}

		#endregion

        #region ----------------PROPERTIES----------------

        private WorkspaceInfo _Settings = new WorkspaceInfo();
        public WorkspaceInfo Settings
        {
            get { return _Settings; }
            set
            {
                if (value != null && value != _Settings) _Settings = value;
            }
        }

        #endregion

        #region ----------------METHODS----------------

        public void AddRecent(Catalog catlog)
        {
            if (Settings.RecentCatalogList == null)
                Settings.RecentCatalogList = new List<RecentFileInfo>();

            Add(Path.GetDirectoryName(catlog.CatalogFilePath), Path.GetFileName(catlog.CatalogFilePath), Settings.RecentCatalogList);
        }

        public void AddRecent(Book bk)
        {
            if (Settings.RecentFileList == null)
                Settings.RecentFileList = new List<RecentFileInfo>();

            Add(Path.GetDirectoryName(bk.FilePath), Path.GetFileName(bk.FilePath), Settings.RecentFileList);
        }

        internal void Add(string filePath, string fileName, List<RecentFileInfo> list)
        {
            try
            {
                RecentFileInfo rfi = list.Find(p => p.FileName == fileName && p.FilePath == filePath);
                if (rfi == null)
                {
                    list.Add(new RecentFileInfo()
                    {
                        FilePath = filePath,
                        FileName = fileName,
                        IsPined = false,
                        LastAccess = DateTime.Now
                    });
                    Mediator.Instance.NotifyColleagues(ViewModelBaseMessages.RecentListChanged, list);
                }
                else
                {
                    rfi.LastAccess = DateTime.Now;
                    Mediator.Instance.NotifyColleagues(ViewModelBaseMessages.RecentFileChanged, rfi);
                }
                //check the max
                int execiding = list.Count - Settings.MaxRecentFile;
                if (execiding > 0)
                {
                    List<RecentFileInfo> temp = new List<RecentFileInfo>();
                    temp.AddRange(list.OrderBy(o => o.LastAccess).Where(p => p.IsPined == false));

                    for (int i = 0; i < execiding; i++)
                        list.Remove(temp[i]);

                    Mediator.Instance.NotifyColleagues(ViewModelBaseMessages.RecentListChanged, list);
                }
            }
            catch (Exception err)
            {
                ExceptionHelper.Manage("CatalogService:Load", err);
            }
        }

        #endregion
    }
}