using System;
using System.Security.Cryptography;
using System.Text;

namespace MAX.Core.Cryptography;

public class MD5Helper
{
	/// <summary>
	/// MD5加密
	/// </summary>
	/// <param name="instring"></param>
	/// <returns></returns>
	public static string Md5_32(string instring)
	{
		return _Md532(instring);
	}
	public static string Md5_Lower32(string instring)
	{
		return _Md532(instring, true);
	}
	public static string _Md532(string instring, bool IsLower = false)
	{
		byte[] result = Encoding.UTF8.GetBytes(string.IsNullOrEmpty(instring) ? "" : instring.Trim());
		MD5 md5 = MD5.Create();
		byte[] output = md5.ComputeHash(result);
		string value = BitConverter.ToString(output).Replace("-", "");
		if (IsLower)
		{
			return value.ToLower();
		}
		return value;
	}


	/// <summary>
	/// MD5加密
	/// </summary>
	/// <returns></returns>
	public static long GetLong(byte[] result)
	{
		return
			Convert.ToInt64(
				BitConverter.ToString(MD5.Create().ComputeHash(result), 4,
					8).Replace("-", ""), 16);
	}

	/// <summary>
	/// MD5 16位加密转long
	/// </summary>
	/// <param name="url"></param>
	/// <returns></returns>
	public static long GetLong(string url)
	{
		if (string.IsNullOrEmpty(url))
		{
			return 0;
		}

		return Convert.ToInt64(BitConverter.ToString(MD5.Create().ComputeHash(Encoding.Default.GetBytes(url)), 4, 8).Replace("-", ""), 16);
	}
}