CookieServiceCollectionExtensions.cs

// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System;
using Microsoft.AspNet.Authentication.Cookies;
using Microsoft.Extensions.Configuration;

namespace Microsoft.Extensions.DependencyInjection
{
    /// <summary>
    /// Extension methods for setting up cookie authentication services in an <see cref="IServiceCollection" />.
    /// </summary>
    public static class CookieServiceCollectionExtensions
    {
        /// <summary>
        /// Adds cookie authentication services to the specified <see cref="IServiceCollection" />. 
        /// </summary>
        /// <param name="services">The <see cref="IServiceCollection" /> to add services to.</param>
        /// <param name="configure">An action delegate to configure the provided <see cref="CookieAuthenticationOptions"/>.</param>
        /// <returns>A reference to this instance after the operation has completed.</returns>
        public static IServiceCollection AddCookieAuthentication(this IServiceCollection services, Action<CookieAuthenticationOptions> configure)
        {
            if (services == null)
            {
                throw new ArgumentNullException(nameof(services));
            }

            if (configure == null)
            {
                throw new ArgumentNullException(nameof(configure));
            }

            return services.Configure(configure);
        }

        /// <summary>
        /// Adds cookie authentication services to the specified <see cref="IServiceCollection" />. 
        /// </summary>
        /// <param name="services">The <see cref="IServiceCollection" /> to add services to.</param>
        /// <param name="config">An <see cref="IConfiguration"/> instance that contains configuration data representing  a <see cref="CookieAuthenticationOptions"/>.</param>
        /// <returns>A reference to this instance after the operation has completed.</returns>
        public static IServiceCollection AddCookieAuthentication(this IServiceCollection services, IConfiguration config)
        {
            if (services == null)
            {
                throw new ArgumentNullException(nameof(services));
            }

            if (config == null)
            {
                throw new ArgumentNullException(nameof(config));
            }

            return services.Configure<CookieAuthenticationOptions>(config);
        }
    }
}