Startup.cs

using AutoMapper;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.SpaServices.Webpack;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using SaleIt.Controllers.Resources.Policy;
using SaleIt.Core;
using SaleIt.Core.Models;
using SaleIt.Persistence;

namespace SaleIt
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.Configure<PhotoSettings>(Configuration.GetSection("PhotoSettings"));
            services.AddAutoMapper();
            services.AddDbContext<SaleItDbContext>(options => options.UseSqlServer(Configuration["connectionString:Default"]));
            services.AddScoped<IPhotoService, PhotoService>();
            services.AddScoped<IVehicleReportService, VehicleReportService>();
            services.AddScoped<IVehicleRepository, VehicleRepository>();
            services.AddScoped<IPhotoRepository, PhotoRepository>();
            services.AddScoped<IUnitOfWork, UnitOfWork>();
            services.AddMvc();

            services.AddAuthorization(options =>
            {
                options.AddPolicy(Policies.RequriedAdminRole, policy =>
                {
                    policy.RequireClaim("https://SaleIt.com/roles", "admin");
                });

                options.AddPolicy(Policies.RequriedModeratorRole, policy =>
                {
                    policy.RequireClaim("https://SaleIt.com/roles", "moderator");
                });
            });

            services.AddAuthentication(options =>
            {
                options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
                options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;

            }).AddJwtBearer(options =>
            {
                options.Authority = "https://ritwickdey.auth0.com/";
                options.Audience = "https://saleIt.com";
            });
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseWebpackDevMiddleware(new WebpackDevMiddlewareOptions
                {
                    HotModuleReplacement = true
                });
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
            }

            app.UseStaticFiles();

            app.UseAuthentication();

            app.UseMvc(routes =>
            {
                routes.MapRoute(
                    name: "default",
                    template: "{controller=Home}/{action=Index}/{id?}");

                routes.MapSpaFallbackRoute(
                    name: "spa-fallback",
                    defaults : new { controller = "Home", action = "Index" });
            });
        }
    }
}