using System;
using System.Collections.Generic;
using LibAC.NBT.API;

namespace LibAC.NBT
{
    public class IntArrayTag : Tag
    {
        public List<int> Value { get; private set; } = new List<int>();

        public IntArrayTag() { }

        private IntArrayTag(List<int> value)
        {
            this.Value.AddRange(value);
        }

        public static IntArrayTag ValueOf(List<int> value)
        {
            return new IntArrayTag(value);
        }

        public override void ReadValue(ByteLayer data)
        {
            int count = data.ReadInt();
            for (int i = 0; i < count; i++)
            {
                Value.Add(data.ReadInt());
            }
        }

        public override void WriteValue(ByteLayer data)
        {
            data.WriteInt(Value.Count);
            foreach (int i in Value)
            {
                data.WriteInt(i);
            }
        }

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

        public override void SetValue(dynamic val) { }

        public override dynamic GetValue() { return null; }

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

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

        public override void ReadStringifiedValue(StringReader reader)
        {
            reader.Expect('[');
            reader.Expect('I');
            reader.Expect(';');
            while (reader.Peek() != ']')
            {
                Value.Add(int.Parse(reader.ReadNumber()));

                if (reader.Peek() == ',')
                    reader.Next();
            }
            reader.Expect('I');
        }
    }
}