1 files changed, 90 insertions, 0 deletions
diff --git a/Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs b/Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs
new file mode 100644
index 000000000..dd4f9cd23
--- /dev/null
+++ b/Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs
@@ -0,0 +1,90 @@
+using Jellyfin.Api;
+using Jellyfin.Api.Auth;
+using Jellyfin.Api.Auth.FirstTimeSetupOrElevatedPolicy;
+using Jellyfin.Api.Auth.RequiresElevationPolicy;
+using Jellyfin.Api.Constants;
+using Jellyfin.Api.Controllers;
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.OpenApi.Models;
+
+namespace Jellyfin.Server.Extensions
+{
+    /// <summary>
+    /// API specific extensions for the service collection.
+    /// </summary>
+    public static class ApiServiceCollectionExtensions
+    {
+        /// <summary>
+        /// Adds jellyfin API authorization policies to the DI container.
+        /// </summary>
+        /// <param name="serviceCollection">The service collection.</param>
+        /// <returns>The updated service collection.</returns>
+        public static IServiceCollection AddJellyfinApiAuthorization(this IServiceCollection serviceCollection)
+        {
+            serviceCollection.AddSingleton<IAuthorizationHandler, FirstTimeSetupOrElevatedHandler>();
+            serviceCollection.AddSingleton<IAuthorizationHandler, RequiresElevationHandler>();
+            return serviceCollection.AddAuthorizationCore(options =>
+            {
+                options.AddPolicy(
+                    Policies.RequiresElevation,
+                    policy =>
+                    {
+                        policy.AddAuthenticationSchemes(AuthenticationSchemes.CustomAuthentication);
+                        policy.AddRequirements(new RequiresElevationRequirement());
+                    });
+                options.AddPolicy(
+                    Policies.FirstTimeSetupOrElevated,
+                    policy =>
+                    {
+                        policy.AddAuthenticationSchemes(AuthenticationSchemes.CustomAuthentication);
+                        policy.AddRequirements(new FirstTimeSetupOrElevatedRequirement());
+                    });
+            });
+        }
+
+        /// <summary>
+        /// Adds custom legacy authentication to the service collection.
+        /// </summary>
+        /// <param name="serviceCollection">The service collection.</param>
+        /// <returns>The updated service collection.</returns>
+        public static AuthenticationBuilder AddCustomAuthentication(this IServiceCollection serviceCollection)
+        {
+            return serviceCollection.AddAuthentication(AuthenticationSchemes.CustomAuthentication)
+                .AddScheme<AuthenticationSchemeOptions, CustomAuthenticationHandler>(AuthenticationSchemes.CustomAuthentication, null);
+        }
+
+        /// <summary>
+        /// Extension method for adding the jellyfin API to the service collection.
+        /// </summary>
+        /// <param name="serviceCollection">The service collection.</param>
+        /// <param name="baseUrl">The base url for the API.</param>
+        /// <returns>The MVC builder.</returns>
+        public static IMvcBuilder AddJellyfinApi(this IServiceCollection serviceCollection, string baseUrl)
+        {
+            return serviceCollection.AddMvc(opts =>
+                {
+                    opts.UseGeneralRoutePrefix(baseUrl);
+                })
+
+                // Clear app parts to avoid other assemblies being picked up
+                .ConfigureApplicationPartManager(a => a.ApplicationParts.Clear())
+                .AddApplicationPart(typeof(StartupController).Assembly)
+                .AddControllersAsServices();
+        }
+
+        /// <summary>
+        /// Adds Swagger to the service collection.
+        /// </summary>
+        /// <param name="serviceCollection">The service collection.</param>
+        /// <returns>The updated service collection.</returns>
+        public static IServiceCollection AddJellyfinApiSwagger(this IServiceCollection serviceCollection)
+        {
+            return serviceCollection.AddSwaggerGen(c =>
+            {
+                c.SwaggerDoc("v1", new OpenApiInfo { Title = "Jellyfin API", Version = "v1" });
+            });
+        }
+    }
+}