Startup.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using AutoMapper;
using Clara.DataAccess;
using Clara.Extension_Methods;
using Clara.Infrastructure;
using Clara.Models;
using Clara.Repository;
using Clara.Repository.Interface;
using Clara.Utility;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Newtonsoft.Json;

namespace Clara
{
    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.ConfigureRepositoryManager();
            services.Configure<EmailOptions>(Configuration);
            services.Configure<EmailSettings>(Configuration.GetSection("EmailSettings"));
            services.Configure<DataProtectionTokenProviderOptions>(opt => opt.TokenLifespan = TimeSpan.FromHours(2));
            services.AddSingleton<IEmailSender, EmailSender>();
            services.AddSignalR();
            services.AddControllersWithViews()
                .AddNewtonsoftJson(options =>
                    options.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore
                );
            services.AddDbContext<ApplicationDbContext>(option => option.UseSqlServer(Configuration.GetConnectionString("Default")));
            services.AddIdentity<ApplicationUser, IdentityRole>(options =>
            {
                options.Password.RequireLowercase = true;
                options.Password.RequireNonAlphanumeric = false;
                options.Password.RequiredUniqueChars = 0;
                options.User.RequireUniqueEmail = true;
                options.Password.RequireUppercase = false;
                options.SignIn.RequireConfirmedEmail = true;
            })
                .AddEntityFrameworkStores<ApplicationDbContext>()
                .AddDefaultTokenProviders();

            services.AddAutoMapper(typeof(Startup));
        }

        // 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.UseStatusCodePagesWithReExecute("/Error/{0}");
                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.UseRouting();

            app.UseAuthentication();

            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{controller=Home}/{action=Index}/{id?}");

                endpoints.MapHub<SignalServer>("signalServer");
            });
        }
    }
}