using System;
using LibAC.NBT.API;

namespace LibAC.NBT
{
    public class DoubleTag : Tag
    {
        public double Value { get; private set; } = 0.0;

        public DoubleTag() { }

        private DoubleTag(double value)
        {
            Value = value;
        }

        public static DoubleTag ValueOf(double value)
        {
            return new DoubleTag(value);
        }

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

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

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

        public override dynamic GetValue()
        {
            return Value;
        }

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

        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}d");
        }

        public override void ReadStringifiedValue(StringReader reader)
        {
            double val = double.Parse(reader.ReadNumber());
            Value = val;
            reader.Expect('d');
        }
    }
}