MifareUltralightInterface.cs

using Android.Nfc;
using Android.Nfc.Tech;
using NeuroAccess.Nfc;
 
namespace NeuroAccessMaui.AndroidPlatform.Nfc
{
    public class MifareUltralightInterface(Tag Tag, MifareUltralight Technology)
        : NfcInterface(Tag, Technology), IMifareUltralightInterface
    {
        private readonly MifareUltralight mifareUltralight = Technology;
 
        public async Task<byte[]> ReadAllData()
        {
            MifareUltralightType Type = this.mifareUltralight.Type;
            int TotalBytes = Type switch
            {
                MifareUltralightType.UltralightC => 192,
                _ => 64,
            };
            int PageSize = MifareUltralight.PageSize;
            byte[] Data = new byte[TotalBytes];
            int Offset = 0;
 
            while (Offset < TotalBytes)
            {
                byte[]? Pages = await this.mifareUltralight.ReadPagesAsync(Offset / PageSize) ?? throw UnableToReadDataFromDevice();
                int i = Math.Min(Pages.Length, TotalBytes - Offset);
                if (i <= 0)
                    throw UnableToReadDataFromDevice();
 
                Array.Copy(Pages, 0, Data, Offset, i);
                Offset += i;
            }
 
            return Data;
        }
    }
}