// Copyright © 2017-2018 Atomic Software, LLC. All Rights Reserved.
// See LICENSE.md for full license information.

using System;
using System.Data;

namespace Atom.Core.IO
{
    public class SHNColumn : DataColumn
    {
        public int Length { get; }
        public byte Type { get; }

        public SHNColumn(SHNDataReader reader, ref int unkColumnCount)
        {
            var Name = reader.ReadPaddedString(48);

            if (Name.Trim().Length < 2)
            {
                ColumnName = $"UnkCol{unkColumnCount}";
                unkColumnCount++;
            }
            else
            {
                ColumnName = Name;
            }

            Type = (byte) reader.ReadUInt32();
            DataType = GetType(Type);
            Length = reader.ReadInt32();
        }

        public static Type GetType(byte type)
        {
            switch (type)
            {
                case 1:
                case 12:
                    return typeof(byte);
                case 2:
                    return typeof(ushort);
                case 3:
                case 11:
                    return typeof(uint);
                case 5:
                    return typeof(float);
                case 0x15:
                case 13:
                    return typeof(short);
                case 0x10:
                    return typeof(byte);
                case 0x12:
                case 0x1b:
                    return typeof(uint);
                case 20:
                    return typeof(sbyte);
                case 0x16:
                    return typeof(int);
                case 0x18:
                case 0x1a:
                case 9:
                    return typeof(string);
                default:
                    return typeof(object);
            }
        }
    }
}