using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace CobXmlSupport
{
    public class IndStatus
    {
        private List<string> presentInds = null;
        private int returns = 0;
        private string[] newInds=null;

        public IndStatus()
        {
            presentInds = new List<string>();
        }

        /// <summary>
        /// Bearbetar status av förekommande indexvariabler i aktuell xml-struktur
        /// </summary>
        /// <param name="new_Inds">innehåller en string array med aktuella index för den kommande variabeln</param>
        public void handleStatus(string[] new_Inds)
        {
            returns = 0;
            List<string> news = new List<string>();
            if(new_Inds!=null) news.AddRange(new_Inds);

            foreach (string tmpStr in presentInds.ToArray())
            {
                if (news.Contains(tmpStr)) {}
                else {
                    presentInds.Remove(tmpStr);
                    returns += 1; 
                }
            }
            List<string> addedStrs = new List<string>();
            if (new_Inds != null)
            {
                foreach (string tmpInStr in new_Inds)
                {
                    if (presentInds.Contains(tmpInStr)) { }
                    else
                    {
                        presentInds.Add(tmpInStr);
                        addedStrs.Add(tmpInStr);
                    }
                }
            }
            if (addedStrs.Count > 0)
            {
                newInds = addedStrs.ToArray();
            }

        }

        public int Returns
        {
            get
            {
                return returns;
            }
        }

        public string[] NewInds
        {
            get
            {
                return newInds;
            }
        }

    }
}