Fixed: Only show install/cannot install on the latest version

src/NzbDrone.Api/Update/UpdateModule.cs

@@ -22,17 +22,19 @@ namespace NzbDrone.Api.Update
                                                  .OrderByDescending(u => u.Version)
                                                  .InjectTo<List<UpdateResource>>();
 
-            foreach (var updateResource in resources)
+            var first = resources.First();
+            first.Latest = true;
+
+            if (first.Version > BuildInfo.Version)
+            {
+                first.Installable = true;
+            }
+
+            var installed = resources.SingleOrDefault(r => r.Version == BuildInfo.Version);
+
+            if (installed != null)
             {
-                if (updateResource.Version > BuildInfo.Version)
+                installed.Installed = true;
-                {
-                    updateResource.IsUpgrade = true;
-                }
-
-                else if (updateResource.Version == BuildInfo.Version)
-                {
-                    updateResource.Installed = true;
-                }
             }
 
             return resources;

src/NzbDrone.Api/Update/UpdateResource.cs

@@ -14,8 +14,9 @@ namespace NzbDrone.Api.Update
         public DateTime ReleaseDate { get; set; }
         public String FileName { get; set; }
         public String Url { get; set; }
-        public Boolean IsUpgrade { get; set; }
         public Boolean Installed { get; set; }
+        public Boolean Installable { get; set; }
+        public Boolean Latest { get; set; }
         public UpdateChanges Changes { get; set; }
         public String Hash { get; set; }
     }

src/UI/System/Update/UpdateItemViewTemplate.hbs

@@ -8,10 +8,12 @@
                 {{#if installed}}
                     <span class="label label-success">Installed</span>
                 {{else}}
-                    {{#if isUpgrade}}
+                    {{#if latest}}
-                        <span class="label label-default install-update x-install-update">Install</span>
+                        {{#if installable}}
-                    {{else}}
+                            <span class="label label-default install-update x-install-update">Install</span>
-                        <span class="label label-default label-disabled" title="Cannot install an older version">Install</span>
+                        {{else}}
+                            <span class="label label-default label-disabled" title="Cannot install an older version">Install</span>
+                        {{/if}}
                     {{/if}}
                 {{/if}}
             </span>