#255 - Returning API version in every response as header.

src/Money.Api.Shared/Models/Api/VersionHeader.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Money.Models.Api
+{
+    public class VersionHeader
+    {
+        public const string Name = "X-Api-Version";
+    }
+}

src/Money.Api/Common/Diagnostics/ExceptionMiddlewareExceptions.cs

@@ -1,12 +1,13 @@
 using Microsoft.AspNetCore.Builder;
+using Money.Common.Diagnostics;
 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace Money.Common.Diagnostics
+namespace Microsoft.AspNetCore.Builder
 {
     public static class ExceptionMiddlewareExceptions
     {

src/Money.Api/Common/Middlewares/VersionMiddleware.cs

@@ -0,0 +1,32 @@
+using Microsoft.AspNetCore.Http;
+using Money.Models.Api;
+using Neptuo;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Money.Common.Middlewares
+{
+    public class VersionMiddleware : IMiddleware
+    {
+        private readonly Version version;
+
+        public VersionMiddleware(VersionMiddlewareOptions options)
+        {
+            Ensure.NotNull(options, "options");
+            version = options.AppAssembly.GetName().Version;
+        }
+
+        public Task InvokeAsync(HttpContext context, RequestDelegate next)
+        {
+            if (version != null)
+                context.Response.Headers[VersionHeader.Name] = version.ToString(4);
+
+            return next(context);
+        }
+    }
+}

src/Money.Api/Common/Middlewares/VersionMiddlewareExtensions.cs

@@ -0,0 +1,27 @@
+using Microsoft.Extensions.DependencyInjection;
+using Money.Common.Middlewares;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Microsoft.AspNetCore.Builder
+{
+    public static class VersionMiddlewareExtensions
+    {
+        public static IServiceCollection AddVersionHeader(this IServiceCollection services, Assembly appAssembly = null)
+        {
+            var options = new VersionMiddlewareOptions();
+            options.AppAssembly = appAssembly ?? Assembly.GetCallingAssembly();
+
+            return services
+                .AddSingleton(options)
+                .AddTransient<VersionMiddleware>();
+        }
+
+        public static IApplicationBuilder UseVersionHeader(this IApplicationBuilder builder) => builder.UseMiddleware<VersionMiddleware>();
+    }
+}

src/Money.Api/Common/Middlewares/VersionMiddlewareOptions.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Money.Common.Middlewares
+{
+    public class VersionMiddlewareOptions
+    {
+        public Assembly AppAssembly { get; set; }
+    }
+}

src/Money.Api/Startup.cs

@@ -16,6 +16,7 @@
 using Microsoft.Extensions.Hosting;
 using Microsoft.IdentityModel.Tokens;
 using Money.Common.Diagnostics;
+using Money.Common.Middlewares;
 using Money.Data;
 using Money.Hubs;
 using Money.Models;
@@ -105,6 +106,9 @@ public void ConfigureServices(IServiceCollection services)
                 .AddControllers()
                 .AddNewtonsoftJson();
 
+            services
+                .AddVersionHeader();
+
             services
                 .AddSignalR();
 
@@ -150,7 +154,7 @@ public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
 #if DEBUG
                 p.WithOrigins("http://localhost:48613");
 #else
-                p.WithOrigins("https://app.money.neptuo.com");
+                p.WithOrigins("https://app.money.neptuo.com", "https://beta.app.money.neptuo.com");
 #endif
                 p.AllowAnyMethod();
                 p.AllowCredentials();
@@ -161,6 +165,8 @@ public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
             app.UseAuthentication();
             app.UseAuthorization();
 
+            app.UseVersionHeader();
+
             app.UseEndpoints(endpoints =>
             {
                 endpoints.MapHealthChecks("/health");