using System;
using System.Collections.Generic;
using System.Collections;
using System.Linq;
using System.Text;
namespace ln.types.odb.ng.index
{
    public class Path
    {
        public String Element { get; }
        public Path Next { get; }
		public Path Parent { get; }

		private Path(Path parent,IEnumerator<string> path)
        {
            Parent = parent;

            if (path.MoveNext())
            {
                Element = path.Current;
                Next = new Path(this,path);
            }
            else
            {
                Element = null;
                Next = null;
            }
        }
        public Path(String[] path)
            :this(null,((IEnumerable<string>)path).GetEnumerator())
        {
        }

		public string Complete
		{
			get
			{
				List<string> path = new List<string>();
				Climb(path);

                StringBuilder sb = new StringBuilder();

                sb.Append(path[0]);
                path.RemoveAt(0);

                foreach (String pe in path)
                {
                    if (!pe.Equals("[]"))
                        sb.Append('_');
                    sb.Append(pe);
                }

                return sb.ToString();
			}
		}

		private void Climb(List<string> path)
		{
			if (Parent != null)
				Parent.Climb(path);
			if (Element != null)
				path.Add(Element);
		}

	}
}