default avatar

Yavsc/Helpers/UserHelpers.cs

@@ -0,0 +1,33 @@
+
+using System.IO;
+using System.Linq;
+using Yavsc.Models;
+
+namespace Yavsc.Helpers
+{
+    public static class UserHelpers
+    {
+        /// <summary>
+        /// The avatar ...
+        /// </summary>
+        /// <param name="dbContext"></param>
+        /// <param name="userId"></param>
+        /// <param name="imgFmt"></param>
+        /// <returns></returns>
+        // FIXME support imgFmt
+        public static string AvatarUri(this ApplicationDbContext dbContext, string userId, string imgFmt )
+        {
+            var user = dbContext.Users.FirstOrDefault(u => u.Id == userId);
+            if (user==null) return Constants.AnonAvatar;
+            if (user.Avatar.StartsWith("/"))
+                {
+                    // use fmt
+                    FileInfo fi = new FileInfo(user.Avatar);
+                    var ext = fi.Extension;
+                    var avatar = user.Avatar.Substring(0,  user.Avatar.Length - ext.Length );
+                    return $"{avatar}{imgFmt}{ext}";
+                }
+            return user.Avatar;
+        }
+    }
+}