C.B.R.

using System;
using System.IO;
using CBR.Core.Files;
using CBR.Core.Models;
using CBR.Core.Helpers;

namespace CBR.Core.Services
{
    public class BookServiceFactory
    {
        #region ----------------SINGLETON----------------

		public static readonly BookServiceFactory Instance = new BookServiceFactory();

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

		#endregion

        public BookServiceBase GetService(Book bk)
        {
            if (bk == null)
                return new BookServiceBase();
            else
                return GetService(bk.FilePath);
        }

        public BookServiceBase GetService(string filePath)
        {
            return (BookServiceBase)Activator.CreateInstance(
                FileService.Instance.FindBookFilterByExt(Path.GetExtension(filePath)).Service
                );
        }

        //public ViewModelBase GetViewModel(Book bk)
        //{
        //    try
        //    {
        //        return GetViewModel(bk.FilePath);
        //    }
        //    catch (Exception err)
        //    {
        //        ExceptionHelper.Manage("BookServiceFactory:GetViewModel", err);
        //        return null;
        //    }
        //}

        //public ViewModelBase GetViewModel(string filePath)
        //{
        //    FileExtension fe = FileExtensionManager.Instance.FindBookFilterByExt(Path.GetExtension(filePath));
        //    if (fe != null)
        //        return (ViewModelBase)new ReflectionHelper().CreateInstance(fe.ViewModel);
        //    else
        //        return null;
        //}

        public string GetViewModel(Book bk)
        {
            try
            {
                return GetViewModel(bk.FilePath);
            }
            catch (Exception err)
            {
                ExceptionHelper.Manage("BookServiceFactory:GetViewModel", err);
                return string.Empty;
            }
        }

        public string GetViewModel(string filePath)
        {
            FileExtension fe = FileService.Instance.FindBookFilterByExt(Path.GetExtension(filePath));
            if (fe != null)
                return fe.ViewModel;
            else
                return string.Empty;
        }
    }
}