refactoring

src/Yavsc.Server/Helpers/HtmlHelpers.cs

@@ -0,0 +1,21 @@
+using Microsoft.AspNetCore.Html;
+using Microsoft.AspNetCore.Http;
+using Yavsc.Models.Drawing;
+
+namespace Yavsc.Helpers
+{
+    public static class HtmlHelpers
+    {
+        public static HtmlString Color(this Color c)
+        {
+            if (c == null) return new HtmlString("#000");
+            return new HtmlString(String.Format("#{0:X2}{1:X2}{2:X2}", c.Red, c.Green, c.Blue));
+        }
+        public static string ToAbsolute(this HttpRequest request, string url)
+        {
+            var host = request.Host;
+            var isSecure = request.Headers[Constants.SshHeaderKey] == "on";
+            return (isSecure ? "https" : "http") + $"://{host}/{url}";
+        }
+    }
+}