FarmMapsApiClient/FarmmapsApi/Extensions.cs

using System.Net.Http;
using FarmmapsApi.HttpMessageHandlers;
using FarmmapsApi.Models;
using FarmmapsApi.Services;
using IdentityModel.Client;
using Microsoft.Extensions.DependencyInjection;

namespace FarmmapsApi
{
    public static class Extensions
    {
        public static IServiceCollection AddFarmmapsServices(this IServiceCollection serviceCollection, Configuration configuration)
        {
            return serviceCollection
                .AddSingleton(configuration)
                .AddSingleton<IDiscoveryCache>(sp =>
                {
                    var httpFactory = sp.GetRequiredService<IHttpClientFactory>();
                    return new DiscoveryCache(configuration.DiscoveryEndpointUrl,
                        () => httpFactory.CreateClient());
                })
                .AddTransient<OpenIdConnectService>()
                .AddTransient<FarmmapsAuthenticationHandler>()
                .AddHttpClient<FarmmapsApiService>()
                .AddHttpMessageHandler<FarmmapsAuthenticationHandler>()
                .Services;;
        }
    }
}