using System;
using System.Collections.Generic;

namespace Core.Io
{
    public class TapManager
    {
        private Queue<byte[]> _blocks = new Queue<byte[]>();

        
        public void LoadTapData(byte[] fileData)
        {
            _blocks.Clear();
            int position = 0;

            while (position < fileData.Length)
            {
                // 1. Read the 16-bit block length (Little Endian)
                int blockLength = fileData[position] | (fileData[position + 1] << 8);
                position += 2;

                // 2. Extract the block payload
                byte[] blockData = new byte[blockLength];
                Array.Copy(fileData, position, blockData, 0, blockLength);
                position += blockLength;

                // 3. Queue it up
                _blocks.Enqueue(blockData);
            }
        }

        public byte[] GetNextBlock()
        {
            return _blocks.Count > 0 ? _blocks.Dequeue() : null;
        }

        public bool HasBlocks => _blocks.Count > 0;
    }
}