using System;
using System.ComponentModel.Composition;
using System.Diagnostics;
using System.Diagnostics.Contracts;
using System.IO;
using Pithos.Interfaces;
using Pithos.ShellExtensions.Test;

namespace Pithos.ShellExtensions
{
    //[Export(typeof(IStatusChecker))]
    public class TestStatusChecker:IStatusChecker
    {
        
        private IPithosSettings Settings=new TestPithosSettings();

        private readonly string[] _states = {"Normal", "Modified", "Conflict","Synch"};

        public FileOverlayStatus GetFileOverlayStatus(string path)
        {
            if (String.IsNullOrWhiteSpace(path))
                throw new ArgumentNullException("Empty path");

            var pithosPath = Settings.PithosPath;
            if (path.StartsWith(pithosPath,true,null))
            {
                var fileName = Path.GetFileName(path);
                if (String.IsNullOrWhiteSpace(fileName))
                    return FileOverlayStatus.Normal;

                var status = Char.ConvertToUtf32(fileName, 0)%4;
                return (FileOverlayStatus)status;
            }
            return FileOverlayStatus.Unversioned;
        }


        //Not Used by the shell extensions
        public PithosStatus GetPithosStatus()
        {
            throw new NotSupportedException();
        }
    }
}