props/Props/Startup.cs

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Props.Data;
using Props.Models.User;
using Props.Services.Modules;
using System;

namespace Props
{
    public class Startup
    {
        public Startup(IConfiguration configuration, IWebHostEnvironment webHostEnvironment)
        {
            Configuration = configuration;
            environment = webHostEnvironment;
        }

        public IConfiguration Configuration { get; }
        private readonly IWebHostEnvironment environment;

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            if (environment.IsDevelopment())
            {
                services.AddDbContext<ApplicationDbContext>(options =>
                {
                    options.UseLazyLoadingProxies();
                    options.UseSqlite(Configuration.GetConnectionString("DefaultConnection"));
                });
                services.AddDatabaseDeveloperPageExceptionFilter();
            }
            else
            {
                services.AddDbContext<ApplicationDbContext>(options =>
                {
                    options.UseLazyLoadingProxies();
                    options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection"));
                });
            }
            services.AddDefaultIdentity<ApplicationUser>(options => options.SignIn.RequireConfirmedAccount = true)
                .AddEntityFrameworkStores<ApplicationDbContext>();
            services.AddRazorPages();

            services.AddSingleton<IShopManager, ModularShopManager>();
            services.AddScoped<IMetricsManager, LiveMetricsManager>();
            services.AddScoped<ISearchManager, LiveSearchManager>();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app)
        {
            if (environment.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            app.UseMigrationsEndPoint();

            app.UseHttpsRedirection();
            app.UseStaticFiles();

            app.UseRouting();

            app.UseAuthentication();
            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
                endpoints.MapRazorPages();
            });
        }
    }
}