Startup.cs

using System.Net;
using System.Text;
using DatingAppV2.Data;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Diagnostics;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.SpaServices.AngularCli;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.IdentityModel.Tokens;
using DatingAppV2.Helpers;
using AutoMapper;

namespace DatingAppV2
{
    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.AddDbContext<DataContext>(x => x.UseSqlite(Configuration.GetConnectionString("DefaultConnection")));
            //Bindings of the different repos and the interfaces
            services.AddTransient<Seed>();
            services.Configure<CloudinarySettings>(Configuration.GetSection("CloudinarySettings"));
            services.AddAutoMapper();
            services.AddScoped<IAuthRepository, AuthRepository>();
            services.AddScoped<IDatingRepository, DatingRepository>(); 
            services.AddScoped<LogUserActivity>();
            services.AddMvc().AddJsonOptions(opt =>
                { opt.SerializerSettings.ReferenceLoopHandling = 
                Newtonsoft.Json.ReferenceLoopHandling.Ignore; 
                });
            services.AddCors();
            services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
                .AddJwtBearer(options => {
                    options.TokenValidationParameters = new TokenValidationParameters
                    {
                        ValidateIssuerSigningKey = true,
                        IssuerSigningKey = new SymmetricSecurityKey(Encoding.ASCII
                            .GetBytes(Configuration.GetSection("AppSettings:Token").Value)),
                        ValidateIssuer = false,
                        ValidateAudience = false
                    };
                });    

            // In production, the Angular files will be served from this directory
            services.AddSpaStaticFiles(configuration =>
            {
                configuration.RootPath = "ClientApp/dist";
            });
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, Seed seed)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler(builder => {
                    builder.Run(async context => {
                        context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;
                        var error = context.Features.Get<IExceptionHandlerFeature>();

                        if(error != null) {
                            context.Response.AddApplicationError(error.Error.Message);
                            await context.Response.WriteAsync(error.Error.Message);
                        }
                    });
                });
                //app.UseHsts();
            }

            //app.UseHttpsRedirection();
            app.UseStaticFiles();
            app.UseSpaStaticFiles();
            // seed.SeedUsers();
            app.UseCors(x => x.AllowAnyOrigin().AllowAnyMethod().AllowAnyHeader());
            app.UseAuthentication();
            app.UseMvc(routes =>
            {
                routes.MapRoute(
                    name: "default",
                    template: "{controller}/{action=Index}/{id?}");
            });

            app.UseSpa(spa =>
            {
                // To learn more about options for serving an Angular SPA from ASP.NET Core,
                // see https://go.microsoft.com/fwlink/?linkid=864501

                spa.Options.SourcePath = "ClientApp";

                if (env.IsDevelopment())
                {
                    spa.UseAngularCliServer(npmScript: "start");
                } 
                if (env.IsProduction())
                {
                    spa.UseAngularCliServer(npmScript: "start");
                }
            });
        }
    }
}