Program.cs

using AspNetCoreHero.ToastNotification;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using OfficeOpenXml;
using OnlineBookStoreMVC.Data;
using OnlineBookStoreMVC.Entities;
using OnlineBookStoreMVC.Implementation.Interface;
using OnlineBookStoreMVC.Implementation.Services;
using System.Net.Http.Headers;

var builder = WebApplication.CreateBuilder(args);

// Set the EPPlus License Context
ExcelPackage.LicenseContext = LicenseContext.NonCommercial;

// Add services to the container.
builder.Services.AddControllersWithViews();
builder.Services.AddTransient<ICategoryService, CategoryService>();
builder.Services.AddTransient<IBookService, BookService>();
builder.Services.AddTransient<IOrderService, OrderService>();
builder.Services.AddTransient<IShoppingCartService, ShoppingCartService>();
builder.Services.AddTransient<IUserService, UserService>();
builder.Services.AddTransient<IEmailService, EmailService>();
builder.Services.AddTransient<IAddressService, AddressService>();
builder.Services.AddTransient<IDeliveryService, DeliveryService>();
builder.Services.AddTransient<IReportService, ReportService>();
builder.Services.AddTransient<IDashboardCountService, DashboardCountService>();
builder.Services.AddHttpClient<PaymentService>();

// Configure Identity services
builder.Services.AddIdentity<User, IdentityRole>(opt =>
{
    opt.Password.RequiredLength = 5;
    opt.Password.RequireDigit = false;
    opt.Password.RequireUppercase = true;
    opt.User.RequireUniqueEmail = true;
    opt.Lockout.DefaultLockoutTimeSpan = TimeSpan.FromSeconds(10);
    opt.Lockout.MaxFailedAccessAttempts = 5;
})
.AddEntityFrameworkStores<ApplicationDbContext>()
.AddDefaultTokenProviders();

// Configure Entity Framework Core
var connectionString = builder.Configuration.GetConnectionString("OnlineBookStoreMVC");
builder.Services.AddDbContext<ApplicationDbContext>(options => options.UseSqlServer(connectionString));

// Configure Email settings
builder.Services.Configure<EmailConfiguration>(builder.Configuration.GetSection("SMTPConfig"));

// Configure HTTP client for PaymentService
builder.Services.AddHttpClient<PaymentService>(client =>
{
    client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", "sk_test_8b4b66305adcb976e2a5ab541f5c440493c58f2a");
    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
});

// Configure session management
builder.Services.AddDistributedMemoryCache();
builder.Services.AddSession(options =>
{
    options.IdleTimeout = TimeSpan.FromMinutes(20);
    options.Cookie.HttpOnly = true;
    options.Cookie.IsEssential = true;
});

// Configure Notyf for notifications
builder.Services.AddNotyf(config =>
{
    config.DurationInSeconds = 3;
    config.IsDismissable = true;
    config.Position = NotyfPosition.TopRight;
});

var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Home/Error");
    app.UseHsts();
}
app.UseItToSeedSqlServer();
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();

app.UseSession();

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

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

app.Run();