AddFinanceAPIHostBuilderExtension.cs

using CoinbasePro;
using CoinbasePro.Network.Authentication;
using CryptoKlepto.CoinBaseProAPI;
using CryptoKlepto.CoinBaseProAPI.Models;
using CryptoKlepto.CoinBaseProAPI.Results;
using CryptoKlepto.CoinBaseProAPI.Services;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using System;
using System.Collections.Generic;
using System.Text;

namespace CryptoKlepto.WPF.HostBuilders
{
    public static class AddFinanceAPIHostBuilderExtensions
    {
        public static IHostBuilder AddFinanceAPI(this IHostBuilder host)
        {
            host.ConfigureServices((context, services) =>
            {
                var apiKey = context.Configuration.GetValue<string>("CoinbaseApiKey");
                // SANDBOX:
                var passphrase = context.Configuration.GetValue<string>("CoinbasePassPhrase");
                var secret = context.Configuration.GetValue<string>("CoinbaseSecretKey");
                var publickey = context.Configuration.GetValue<string>("CoinbasePublicKey");

                var authenticator = new Authenticator(publickey, secret, passphrase);
                var coinbaseProClient = new CoinbaseProClient(authenticator, true);
                
                //var res = coinbaseProClient.AccountsService.GetAllAccountsAsync().GetAwaiter().GetResult();
                //services.AddScoped<CoinBaseProAPIHttpClient>(c => new CoinBaseProAPIHttpClient(coinbaseProClient, new CoinBaseProApiKey(apiKey)));
                //services.AddTransient<CoinBaseProAPIHttpClient>(c => new CoinBaseProAPIHttpClient(coinbaseProClient, new CoinBaseProApiKey(apiKey)));
                
                services.AddSingleton(new CoinBaseProAPIHttpClient(coinbaseProClient, new CoinBaseProApiKey(apiKey)));
                
                //services.AddHttpClient<CoinBaseProAPIHttpClient>(c =>
                //{ 
                //    c.BaseAddress = new Uri("https://financialmodelingprep.com/api/v3/");
                //});
            });

            return host;
        }
    }
}