openiddict-core/src/OpenIddict.Abstractions/OpenIddictExtensions.cs

/*
 * Licensed under the Apache License, Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
 * See https://github.com/openiddict/openiddict-core for more information concerning
 * the license and the contributors participating to this project.
 */

using System;

namespace Microsoft.Extensions.DependencyInjection
{
    /// <summary>
    /// Exposes extensions allowing to register the OpenIddict services.
    /// </summary>
    public static class OpenIddictExtensions
    {
        /// <summary>
        /// Provides a common entry point for registering the OpenIddict services.
        /// </summary>
        /// <param name="services">The services collection.</param>
        /// <remarks>This extension can be safely called multiple times.</remarks>
        /// <returns>The <see cref="OpenIddictBuilder"/>.</returns>
        public static OpenIddictBuilder AddOpenIddict(this IServiceCollection services)
        {
            if (services == null)
            {
                throw new ArgumentNullException(nameof(services));
            }

            return new OpenIddictBuilder(services);
        }

        /// <summary>
        /// Provides a common entry point for registering the OpenIddict services.
        /// </summary>
        /// <param name="services">The services collection.</param>
        /// <param name="configuration">The configuration delegate used to register new services.</param>
        /// <remarks>This extension can be safely called multiple times.</remarks>
        /// <returns>The <see cref="IServiceCollection"/>.</returns>
        public static IServiceCollection AddOpenIddict(this IServiceCollection services, Action<OpenIddictBuilder> configuration)
        {
            if (services == null)
            {
                throw new ArgumentNullException(nameof(services));
            }

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

            configuration(services.AddOpenIddict());

            return services;
        }
    }
}