netmash/src/security/authentication/Netmash.Security.Authentication.Tuitio/AuthenticationExtensions.cs

using Tuitio.Wrapper;
using Microsoft.AspNetCore.Authentication;
using Microsoft.Extensions.DependencyInjection;
using Netmash.Security.Authentication.Tuitio.Abstractions;
using System;

namespace Netmash.Security.Authentication.Tuitio
{
    public static class AuthenticationExtensions
    {
        public static IServiceCollection AddTuitioAuthentication(this IServiceCollection services, string tuitioBaseAddress)
        {
            services.AddTuitioAuthentication(tuitioBaseAddress, new Models.AuthenticationOptions());
            return services;
        }

        public static IServiceCollection AddTuitioAuthentication(this IServiceCollection services, string tuitioBaseAddress, IAuthenticationOptions options)
        {
            Validate(tuitioBaseAddress, options);

            // Tuitio
            services.UseTuitioServices(tuitioBaseAddress);
            services.AddSingleton(options);

            // configure authentication 
            services.AddAuthentication("TuitioAuthentication")
                .AddScheme<AuthenticationSchemeOptions, TuitioAuthenticationHandler>("TuitioAuthentication", null);

            return services;
        }

        private static void Validate(string tuitioBaseAddress, IAuthenticationOptions options)
        {
            if (string.IsNullOrEmpty(tuitioBaseAddress))
                throw new ArgumentException("Tuitio base address must be provided.");

            var guestFuncDefined = options.AuthenticateAsGuest != null;
            if (guestFuncDefined && string.IsNullOrEmpty(options.GuestUserName))
                throw new ArgumentException("Guest function is defined, but guest user name is not set.");
        }
    }
}