using Qrakhen.Qamp.Core.Collections;
using System.Text;

namespace Qrakhen.Qamp.Core.Values.Objects;

public class String(string? value) : Obj(ValueType.String)
{
   private static readonly Register<uint, String> _strings = new();

   public string? Value = value;

   public override string ToString() => Value ?? "null";

   public uint GetHash()
   {
      if (string.IsNullOrEmpty(value))
         return 0;

      return Value.GetHash();
   }

   public static Value Make(string? value)
   {
      String? str;
      var hash = value?.GetHash() ?? 0;
      if (!_strings.TryGet(hash, out str)) {
         str = new String(value);
         _strings.Add(hash, str);
      }

      return Create(str);
   }

   public static byte[] SerializeStrings()
   {
      List<byte> result = new();
      foreach (var pair in _strings) {
         String str = pair.Value;
         if (str == null || str.__gcMarked)
            continue;
         byte[] bytes;
         bytes = Encoding.ASCII.GetBytes(str.Value!);
         result.AddRange(pair.Key.GetBytes());
         result.AddRange(bytes.Length.GetBytes());
         result.AddRange(bytes);
         result.Add(0);
      }
      return result.ToArray();
   }
}