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

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

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

        public string GetFileStatus(string path)
        {
            Contract.Requires(!String.IsNullOrWhiteSpace(path));
            var pithosPath = Settings.PithosPath;
            if (path.StartsWith(pithosPath,true,null))
            {
                var fileName = Path.GetFileName(path);
                if (String.IsNullOrWhiteSpace(fileName))
                    return _states[0];

                var status = Char.ConvertToUtf32(fileName, 0)%4;
                return _states[status];
            }
            return String.Empty;
        }
    }
}