Program.cs

using Microsoft.AspNetCore.Identity;
using Microsoft.Data.SqlClient;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using OpenDiscussion.Data;
using OpenDiscussion.Models;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.

var connectionString = builder.Configuration.GetConnectionString("DefaultConnection");

builder.Services.AddDbContext<ApplicationDbContext>(options =>
    options.UseSqlServer(connectionString));

builder.Services.AddDatabaseDeveloperPageExceptionFilter();

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

builder.Services.AddControllersWithViews();

var app = builder.Build();

// CreateScope ofera acces la instanta curenta a aplicatiei
// variabila scope are un Service provider - folosit pentru a injecta dependentele in aplicatie
// dependente -> bd, cookie, sesiune, autentificare, etc

using (var scope = app.Services.CreateScope())
{
    var services = scope.ServiceProvider;
    SeedData.Initialize(services);
}

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseMigrationsEndPoint();
}
else
{
    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();
app.UseAuthorization();

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

app.MapRazorPages();

app.Run();