Startup.cs

using System.Text.Json.Serialization;
using Kernel.Extention;
using Kernel.Modules;
using Kernel.Shared;
using Microsoft.AspNetCore.Components;
using Microsoft.EntityFrameworkCore;
using Microsoft.OpenApi.Models;

namespace Kernel;

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)
        {
            var jwtSigningKey = Configuration.GetValue<string>("Authorization:JWTSigningKey");
            services.AddControllers().AddJsonOptions(x =>
                x.JsonSerializerOptions.ReferenceHandler = ReferenceHandler.IgnoreCycles);

            services
                .AddSingleton<IPasswordHasher, Argon2IdHasher>()
                .AddDbContext<DatabaseContext>()
                .AddScoped<DbAccess>()
                .AddSingleton<IAuthorization>((services) => jwtSigningKey == null
                    ? new JWTAuthorization()
                    : new JWTAuthorization(jwtSigningKey))
                .AddSingleton<IConfiguration>(Configuration);

            services.AddSwaggerGen(options =>
            {
                options.SwaggerDoc("v1", new OpenApiInfo { Title = "Watchify API endpoints", Version = "v1" });
            });
            services.AddRazorPages();
            services.AddServerSideBlazor();
            services.AddScoped<CookieHandler>(sp => new CookieHandler());
            services.AddHttpClient<HttpClient>("API",
                (s) => s.BaseAddress = new Uri(Configuration.GetValue<string>("BaseAddress"))
            ).AddHttpMessageHandler<CookieHandler>();
            services.AddScoped<HttpClient>(sp => sp.GetRequiredService<IHttpClientFactory>().CreateClient("API"));
            services.AddSingleton<WebStateContainer>();
        }

        // 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();

                app.UseCors(options =>
                {
                    options
                        .AllowAnyOrigin()
                        .AllowAnyHeader()
                        .AllowAnyMethod();
                });
            }

            app.UseHsts();
            app.UseRouting();
            app.UseStaticFiles();
            app.UseFileServer();
            app.UseAuthorization();

            app.UseSwagger();
            app.UseSwaggerUI(options =>
            {
                options.SwaggerEndpoint("/swagger/v1/swagger.json", "Swagger");
                options.RoutePrefix = "swagger";
            });

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
                endpoints.MapBlazorHub();
                endpoints.MapFallbackToPage("/_Host");
            });
            
            using (var scope = app.ApplicationServices.CreateScope())
            using (var db = scope.ServiceProvider.GetService<DatabaseContext>()!)
            {
                try
                {
                    db.Database.Migrate();
                }
                catch
                {
                    Console.WriteLine("Already migrated");
                }
            }

            var dbAccess = app.ApplicationServices.CreateScope().ServiceProvider.GetService<DbAccess>()!;
            var initialLoader = new InitialDataLoader(dbAccess);
            initialLoader.LoadInitials().Wait();
        }
    }