Program.cs

using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using Serilog;
using Serilog.Sinks.SystemConsole.Themes;
using UrlShorter.Data;
using UrlShorter.Services;

var builder = WebApplication.CreateBuilder(args);
var config = builder.Configuration;

builder.Services.AddRazorPages(); // For Identity UI
builder.Services.AddControllersWithViews();

builder.Services.AddDbContext<ApplicationDbContext>(options =>
    options.UseSqlite(builder.Configuration.GetConnectionString("DefaultConnection")));

builder.Services.AddDefaultIdentity<IdentityUser>(options =>
    options.SignIn.RequireConfirmedAccount = true)
    .AddEntityFrameworkStores<ApplicationDbContext>();

builder.Services.AddScoped<UrlShortenedService>();

Log.Logger = new LoggerConfiguration()
    .WriteTo.Console(theme: AnsiConsoleTheme.Sixteen)
    .MinimumLevel.Information()
    .CreateLogger();

builder.Host.UseSerilog();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Home/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(); // Enable authentication
app.UseAuthorization();

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

app.MapRazorPages(); // For Identity UI

app.Run();