Renamed Umbraco.Abstractions to Umbraco.Core

src/Umbraco.Core/ContentApps/ContentAppFactoryCollection.cs

@@ -0,0 +1,60 @@
+using System.Collections.Generic;
+using System.Linq;
+using Umbraco.Core;
+using Umbraco.Core.Composing;
+using Umbraco.Core.Models.ContentEditing;
+using Umbraco.Core.Logging;
+using Umbraco.Core.Models.Membership;
+
+namespace Umbraco.Web.ContentApps
+{
+    public class ContentAppFactoryCollection : BuilderCollectionBase<IContentAppFactory>
+    {
+        private readonly ILogger _logger;
+        private readonly IUmbracoContextAccessor _umbracoContextAccessor;
+
+        public ContentAppFactoryCollection(IEnumerable<IContentAppFactory> items, ILogger logger, IUmbracoContextAccessor umbracoContextAccessor)
+            : base(items)
+        {
+            _logger = logger;
+            _umbracoContextAccessor = umbracoContextAccessor;
+        }
+
+        private IEnumerable<IReadOnlyUserGroup> GetCurrentUserGroups()
+        {
+            var currentUser = _umbracoContextAccessor.UmbracoContext?.Security?.CurrentUser;
+            return currentUser == null
+                ? Enumerable.Empty<IReadOnlyUserGroup>()
+                : currentUser.Groups;
+
+        }
+
+        public IEnumerable<ContentApp> GetContentAppsFor(object o, IEnumerable<IReadOnlyUserGroup> userGroups=null)
+        {
+            var roles = GetCurrentUserGroups();
+
+            var apps = this.Select(x => x.GetContentAppFor(o, roles)).WhereNotNull().OrderBy(x => x.Weight).ToList();
+
+            var aliases = new HashSet<string>();
+            List<string> dups = null;
+
+            foreach (var app in apps)
+            {
+                if (aliases.Contains(app.Alias))
+                    (dups ?? (dups = new List<string>())).Add(app.Alias);
+                else
+                    aliases.Add(app.Alias);
+            }
+
+            if (dups != null)
+            {
+                // dying is not user-friendly, so let's write to log instead, and wish people read logs...
+
+                //throw new InvalidOperationException($"Duplicate content app aliases found: {string.Join(",", dups)}");
+                _logger.Warn<ContentAppFactoryCollection>("Duplicate content app aliases found: {DuplicateAliases}", string.Join(",", dups));
+            }
+
+            return apps;
+        }
+    }
+}