1 files changed, 56 insertions, 0 deletions
diff --git a/Jellyfin.Api/MvcRoutePrefix.cs b/Jellyfin.Api/MvcRoutePrefix.cs
new file mode 100644
index 000000000..e00973094
--- /dev/null
+++ b/Jellyfin.Api/MvcRoutePrefix.cs
@@ -0,0 +1,56 @@
+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.ApplicationModels;
+
+namespace Jellyfin.Api
+{
+    /// <summary>
+    /// Route prefixing for ASP.NET MVC.
+    /// </summary>
+    public static class MvcRoutePrefix
+    {
+        /// <summary>
+        /// Adds route prefixes to the MVC conventions.
+        /// </summary>
+        /// <param name="opts">The MVC options.</param>
+        /// <param name="prefixes">The list of prefixes.</param>
+        public static void UseGeneralRoutePrefix(this MvcOptions opts, params string[] prefixes)
+        {
+            opts.Conventions.Insert(0, new RoutePrefixConvention(prefixes));
+        }
+
+        private class RoutePrefixConvention : IApplicationModelConvention
+        {
+            private readonly AttributeRouteModel[] _routePrefixes;
+
+            public RoutePrefixConvention(IEnumerable<string> prefixes)
+            {
+                _routePrefixes = prefixes.Select(p => new AttributeRouteModel(new RouteAttribute(p))).ToArray();
+            }
+
+            public void Apply(ApplicationModel application)
+            {
+                foreach (var controller in application.Controllers)
+                {
+                    if (controller.Selectors == null)
+                    {
+                        continue;
+                    }
+
+                    var newSelectors = new List<SelectorModel>();
+                    foreach (var selector in controller.Selectors)
+                    {
+                        newSelectors.AddRange(_routePrefixes.Select(routePrefix => new SelectorModel(selector)
+                        {
+                            AttributeRouteModel = AttributeRouteModel.CombineAttributeRouteModel(routePrefix, selector.AttributeRouteModel)
+                        }));
+                    }
+
+                    controller.Selectors.Clear();
+                    newSelectors.ForEach(selector => controller.Selectors.Add(selector));
+                }
+            }
+        }
+    }
+}