using System;
using System.Collections.Generic;
using System.Collections;

namespace Lextm.SharpSnmpLib.Mib
{
    public class DisplayHint
    {
        private enum NumType {
            dec,
            hex,
            oct,
            bin,
            str
        }

        private string _str;
        private NumType _type;
        private int _decimalPoints = 0;

        public DisplayHint(string str)
        {
            _str = str;
            if (str.StartsWith("d"))
            {
                _type = NumType.dec;
                if (str.StartsWith("d-"))
                {
                    _decimalPoints = Convert.ToInt32(str.Substring(2));
                }
            }
            else if (str.StartsWith("o"))
            {
                _type = NumType.oct;
            }
            else if (str.StartsWith("h"))
            {
                _type = NumType.hex;
            }
            else if (str.StartsWith("b"))
            {
                _type = NumType.bin;
            }
            else
            {
                _type = NumType.str;
                foreach (char c in str)
                {

                }
            }

        }

        public override string ToString()
        {
            return _str;
        }

        internal object Decode(int i)
        {
            switch (_type)
            {
                case NumType.dec:
                    if (_decimalPoints == 0)
                    {
                        return i;
                    }
                    else
                    {
                        return i / Math.Pow(10.0, _decimalPoints);
                    }
                case NumType.hex:
                    return System.Convert.ToString(i, 16);
                case NumType.oct:
                    return System.Convert.ToString(i, 8);
                case NumType.bin:
                    return System.Convert.ToString(i, 2);
                default:
                    return null;
            }
        }
    }
}