using System;

namespace Oni.Metadata
{
    internal class BinaryPartField : Field
    {
        private string sizeFieldName;
        private int sizeMultiplier;
        private MetaType rawType;

        public BinaryPartField(MetaType offsetType, string name)
            : this(offsetType, name, null, 0)
        {
        }

        public BinaryPartField(MetaType offsetType, string name, string sizeFieldName)
            : this(offsetType, name, sizeFieldName, 1)
        {
        }

        public BinaryPartField(MetaType offsetType, string name, int size)
            : this(offsetType, name, null, size)
        {
        }

        public BinaryPartField(MetaType offsetType, string name, int size, MetaType rawType)
            : this(offsetType, name, null, size, rawType)
        {
        }

        public BinaryPartField(MetaType offsetType, string name, string sizeFieldName, int sizeMultiplier)
            : this(offsetType, name, sizeFieldName, sizeMultiplier, null)
        {
        }

        public BinaryPartField(MetaType offsetType, string name, string sizeFieldName, int sizeMultiplier, MetaType rawType)
            : base(offsetType, name)
        {
            if (offsetType != MetaType.RawOffset && offsetType != MetaType.SepOffset)
                throw new ArgumentException("Offset type can only be RawOffset or SepOffset", "offsetType");

            this.sizeFieldName = sizeFieldName;
            this.sizeMultiplier = sizeMultiplier;
            this.rawType = rawType;
        }

        public string SizeFieldName => sizeFieldName;
        public int SizeMultiplier => sizeMultiplier;
        public MetaType RawType => rawType;
    }
}