using System;
using System.Collections.Generic;
using System.Globalization;
using System.Text;

namespace Asb.Base.V2;

public static class DataConversionUtilities
{
	public static string ToBase64(this string value)
	{
		string result = string.Empty;
		if (value != null)
		{
			result = Encoding.UTF8.GetBytes(value).ToBase64();
		}
		return result;
	}

	public static string FromBase64(this string value)
	{
		string result = string.Empty;
		if (value != null)
		{
			byte[] bytes = value.FromBase64ToByteArray();
			result = Encoding.UTF8.GetString(bytes);
		}
		return result;
	}

	public static string ToBase64(this byte[] value)
	{
		string result = string.Empty;
		try
		{
			result = Convert.ToBase64String(value);
		}
		catch
		{
		}
		return result;
	}

	public static string ToHex(this byte[] value)
	{
		StringBuilder stringBuilder = new StringBuilder();
		if (value != null)
		{
			foreach (byte b in value)
			{
				stringBuilder.Append(b.ToString("X2", CultureInfo.CurrentCulture));
			}
		}
		return stringBuilder.ToString();
	}

	public static byte[] FromBase64ToByteArray(this string value)
	{
		byte[] result = null;
		if (value != null)
		{
			try
			{
				result = Convert.FromBase64String(value);
			}
			catch
			{
			}
		}
		return result;
	}

	public static byte[] FromHexToByteArray(this string value)
	{
		List<byte> list = new List<byte>();
		if (value != null)
		{
			string text = value.Replace(" ", string.Empty);
			text = text.Replace("\r", string.Empty);
			text = text.Replace("\n", string.Empty);
			if (text.Length % 2 == 0)
			{
				for (int i = 0; i < text.Length; i += 2)
				{
					if (byte.TryParse(text.Substring(i, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var result))
					{
						list.Add(result);
					}
				}
			}
		}
		return list.ToArray();
	}
}