Startup.cs

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Identity;
using Microsoft.CodeAnalysis.Options;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using PWAPI;
using PWAPI.Interface;
using PWAPI.Model;
using PWAPI.Service;
using System;
using System.Threading.Tasks;
using System.Timers;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc.Authorization;

namespace MyWeb
{
   public class Startup
    {
        private static Timer atimer;
        public static void ThisTimer()
        {
            atimer = new Timer
            {
                Interval = 3600000 //1 hour
            };
            atimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
            atimer.AutoReset = true;
            atimer.Enabled = true;
        }
        private async static void OnTimedEvent(object source, ElapsedEventArgs e)
        {
            GetApi.InitializeClient();
            await GetAllNation.GetNation();
            GetAllAlliances.GetAlliance();
        }
        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.AddRazorPages();
            services.AddSingleton<INations, NationCheckList>();
            services.AddSingleton<IAlliance, AllianceCheckList>();

            services.AddDbContext<DContext>(options =>
                    options.UseSqlServer(Configuration.GetConnectionString("connection")));
            services.AddIdentity<IdentityUser, IdentityRole>(options => 
            {
                options.SignIn.RequireConfirmedEmail = true;
            }).AddEntityFrameworkStores<DContext>()
            .AddDefaultTokenProviders();
            services.AddAuthentication()
                .AddGoogle(options =>
                {
                    options.ClientId = ConfigurationManager.AppSettings["ClientId"];
                    options.ClientSecret = ConfigurationManager.AppSettings["ClientSecret"];
                });
            services.AddTransient<IMailService, SendGridMailService>();
            services.AddMvc(config => {
                var policy = new AuthorizationPolicyBuilder()
                .RequireAuthenticatedUser()
                .Build();
                config.Filters.Add(new AuthorizeFilter(policy));
            ).AddJsonOptions(options => options.JsonSerializerOptions.PropertyNamingPolicy = null);
            services.ConfigureApplicationCookie(options => options.LoginPath = "/Accounts/Logins");
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Error");
                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                app.UseHsts();
            }

            app.UseHttpsRedirection();
            app.UseStaticFiles();
            app.UseSession();
            app.UseAuthentication();

            app.UseRouting();
            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapRazorPages();
                endpoints.MapControllerRoute(
                    name: "Logouts",
                    pattern: "{controller=Account}/{action=Logout}/{id?}");
                endpoints.MapControllerRoute(
                    name: "confirmEmail",
                    pattern: "{controller=Accounts}/{action=confirmEmail}/{id?}");
                endpoints.MapControllerRoute(
                    name: "Accounts",
                    pattern: "{controller=Account}/{action=Register}/{id?}");
            });
        }
    }
}