Move Middleware to Jellyfin.Api

Jellyfin.Api/Middleware/QueryStringDecodingMiddleware.cs

@@ -0,0 +1,39 @@
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Http.Features;
+
+namespace Jellyfin.Api.Middleware
+{
+    /// <summary>
+    /// URL decodes the querystring before binding.
+    /// </summary>
+    public class QueryStringDecodingMiddleware
+    {
+        private readonly RequestDelegate _next;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="QueryStringDecodingMiddleware"/> class.
+        /// </summary>
+        /// <param name="next">The next delegate in the pipeline.</param>
+        public QueryStringDecodingMiddleware(RequestDelegate next)
+        {
+            _next = next;
+        }
+
+        /// <summary>
+        /// Executes the middleware action.
+        /// </summary>
+        /// <param name="httpContext">The current HTTP context.</param>
+        /// <returns>The async task.</returns>
+        public async Task Invoke(HttpContext httpContext)
+        {
+            var feature = httpContext.Features.Get<IQueryFeature>();
+            if (feature is not null)
+            {
+                httpContext.Features.Set<IQueryFeature>(new UrlDecodeQueryFeature(feature));
+            }
+
+            await _next(httpContext).ConfigureAwait(false);
+        }
+    }
+}