BulkPrintingAPI/BulkPrintingAPI/Startup.cs

using BulkPrintingAPI.Configuration;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc.Authorization;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.IdentityModel.Tokens;
using System;

namespace BulkPrintingAPI
{
    public class Startup
    {
        public Startup(IHostingEnvironment env)
        {
            var builder = new ConfigurationBuilder()
                .SetBasePath(env.ContentRootPath)
                .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
                .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true, reloadOnChange: true)
                .AddJsonFile("secrets.json", optional: true, reloadOnChange: true)
                .AddJsonFile($"secrets.{env.EnvironmentName}.json", optional: true, reloadOnChange: true)
                .AddEnvironmentVariables();
            Configuration = builder.Build();
        }

        public IConfigurationRoot Configuration { get; }

        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMemoryCache();
            services.AddMvc(config =>
            {
                var policy = new AuthorizationPolicyBuilder().RequireAuthenticatedUser().Build();
                config.Filters.Add(new AuthorizeFilter(policy));
            });
            services.AddSingleton(new TokenAuthenticationOptions(
                Configuration.GetSection("TokenAuthentication")));
            services.AddSingleton(new DataEncryptionOptions(
                Configuration.GetSection("DataEncryption")));
            services.AddSingleton(new MAX.ClientFactory(
                Configuration.GetSection("MAX")));
            services.AddDbContext<MAX.Models.MAXContext>(
                options => options.UseSqlServer(
                    Configuration["Database:ConnectionString"],
                    b => b.MigrationsAssembly("BulkPrintingAPI")));
        }

        public void Configure(IApplicationBuilder app, IHostingEnvironment env,
            ILoggerFactory loggerFactory, TokenAuthenticationOptions tokenAuthenticationOptions)
        {
            loggerFactory.AddConsole(Configuration.GetSection("Logging"));
            loggerFactory.AddDebug();

            var tokenValidationParameters = new TokenValidationParameters
            {
                ValidateIssuerSigningKey = true,
                IssuerSigningKey = tokenAuthenticationOptions.Key,
                TokenDecryptionKey = tokenAuthenticationOptions.Key,

                ValidateIssuer = true,
                ValidIssuer = tokenAuthenticationOptions.Issuer,

                ValidateAudience = true,
                ValidAudience = tokenAuthenticationOptions.Audience,

                ValidateLifetime = true,
                ClockSkew = TimeSpan.Zero
            };

            var bearerOptions = new JwtBearerOptions
            {
                AutomaticAuthenticate = true,
                AutomaticChallenge = true,
                SaveToken = true,
                TokenValidationParameters = tokenValidationParameters
            };

            app.UseJwtBearerAuthentication(bearerOptions);

            app.UseMvc();
        }
    }
}