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src/Yavsc/Helpers/UserHelpers.cs

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+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.Data.Entity;
+using Yavsc.Models;
+using Yavsc.Models.Blog;
+
+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==null) return Constants.DefaultAvatar;
+            var avatar = user.UserName;
+            return $"/Avatars/{avatar}{imgFmt}.png";
+        }
+
+        public static IEnumerable<BlogPost> UserPosts(this ApplicationDbContext dbContext, string posterId, string readerId)
+        {
+            long[] readerCirclesMemberships = dbContext.Circle.Include(c=>c.Members).Where(c=>c.Members.Any(m=>m.MemberId == readerId))
+            .Select(c=>c.Id).ToArray();
+            var result = (readerId!=null)
+            ?
+                 dbContext.Blogspot.Include(
+                 b => b.Author
+                 ).Include(p=>p.ACL).Where(x => x.Author.Id == posterId && 
+                 (x.Visible && 
+                 (x.ACL.Count==0 || x.ACL.Any(a=> readerCirclesMemberships.Contains(a.CircleId)))))
+            :
+                dbContext.Blogspot.Include(
+                b => b.Author
+                ).Where(x => x.Author.Id == posterId && x.Visible);
+                // BlogIndexKey
+            return  result.OrderByDescending(p => p.DateCreated);
+        }
+    }
+}