using System;
using LibAC.NBT.API;

namespace LibAC.NBT
{
    public class IntTag : Tag
    {
        public int Value { get; private set; } = 0;

        public IntTag() { }

        private IntTag(int value)
        {
            this.Value = value;
        }

        public static IntTag ValueOf(int value)
        {
            return new IntTag(value);
        }

        public override void ReadValue(ByteLayer data)
        {
            Value = data.ReadInt();
        }

        public override void WriteValue(ByteLayer data)
        {
            data.WriteInt(Value);
        }

        public override TagType GetTagType()
        {
            return TagType.Int;
        }

        public override void SetValue(dynamic val)
        {
            if (val is int)
                Value = val;
        }

        public override dynamic GetValue()
        {
            return Value;
        }

        public override void PrettyPrint(int indent, bool recurse)
        {
            Console.WriteLine($"{new string('\t', indent)}{Tag.GetCanonicalName(GetTagType())}: {Value}");
        }

        public override void WriteStringifiedValue(StringBuilder builder, int indent, bool isList)
        {
            builder.Append($"{(isList ? new string('\t', indent) : "")}{Value}i");
        }

        public override void ReadStringifiedValue(StringReader reader)
        {
            string val = reader.ReadNumber();
            Value = int.Parse(val);

            // Since a type indicator is optional for an int, check for a comma
            if (reader.Peek() == ',')
                return;
            else
                reader.Expect('i');
        }
    }
}