code refact

src/Moonglade.Utils/Helper.cs

@@ -112,26 +112,6 @@ public static string GetDNSPrefetchUrl(string cdnEndpoint)
         return $"{uri.Scheme}://{uri.Host}/";
     }
 
-    public static string GetMd5Hash(string input)
-    {
-        // Convert the input string to a byte array and compute the hash.
-        var data = MD5.Create().ComputeHash(Encoding.UTF8.GetBytes(input));
-
-        // Create a new Stringbuilder to collect the bytes
-        // and create a string.
-        var sBuilder = new StringBuilder();
-
-        // Loop through each byte of the hashed data
-        // and format each one as a hexadecimal string.
-        foreach (var t in data)
-        {
-            sBuilder.Append(t.ToString("x2"));
-        }
-
-        // Return the hexadecimal string.
-        return sBuilder.ToString();
-    }
-
     // https://docs.microsoft.com/en-us/aspnet/core/security/data-protection/consumer-apis/password-hashing?view=aspnetcore-6.0
     // This is not secure, but better than nothing.
     public static string HashPassword(string clearPassword, string saltBase64)

src/Moonglade.Web/TagHelpers/GravatarImgHelper.cs

@@ -1,4 +1,5 @@
 using Microsoft.AspNetCore.Razor.TagHelpers;
+using System.Security.Cryptography;
 using System.Text.Encodings.Web;
 
 namespace Moonglade.Web.TagHelpers;
@@ -19,7 +20,7 @@ public class GravatarImgHelper : TagHelper
     public override void Process(TagHelperContext context, TagHelperOutput output)
     {
         var email = string.IsNullOrEmpty(Email) ? string.Empty : Email.Trim().ToLower();
-        var emailHash = Helper.GetMd5Hash(email);
+        var emailHash = GetMd5Hash(email);
 
         var src = string.Format("{0}://{1}.gravatar.com/avatar/{2}?s={3}{4}{5}{6}",
             PreferHttps ? "https" : "http",
@@ -36,4 +37,24 @@ public override void Process(TagHelperContext context, TagHelperOutput output)
         output.Attributes.SetAttribute("src", src);
         output.Attributes.SetAttribute("alt", "Gravatar image");
     }
+
+    private static string GetMd5Hash(string input)
+    {
+        // Convert the input string to a byte array and compute the hash.
+        var data = MD5.Create().ComputeHash(Encoding.UTF8.GetBytes(input));
+
+        // Create a new Stringbuilder to collect the bytes
+        // and create a string.
+        var sBuilder = new StringBuilder();
+
+        // Loop through each byte of the hashed data
+        // and format each one as a hexadecimal string.
+        foreach (var t in data)
+        {
+            sBuilder.Append(t.ToString("x2"));
+        }
+
+        // Return the hexadecimal string.
+        return sBuilder.ToString();
+    }
 }