Program.cs

using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using ContosoUniversity.Data;
using ContosoUniversity.Migrations;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;
using Microsoft.AspNetCore.Authentication;
using ContosoUniversity.Data;
using ContosoUniversity.Services;
using ContosoUniversity.Authorization;
using System.Text.Json.Serialization;
using ContosoUniversity.Services;
//using ContosoUniversity.Data;
var builder = WebApplication.CreateBuilder(args);

builder.Services.Configure<AppSettings>(builder.Configuration.GetSection("AppSettings"));

builder.Services.AddDbContext<ContosoUniversityContext>(options =>
    options.UseSqlServer(builder.Configuration.GetConnectionString("ContosoUniversityContext") ?? throw new InvalidOperationException("Connection string 'ContosoUniversityContext' not found.")));

// Add services to the container.
builder.Services.AddControllersWithViews();
builder.Services.AddAutoMapper(typeof(Program));
builder.Services.AddCors();
builder.Services.AddControllers()
    .AddJsonOptions(x => x.JsonSerializerOptions.DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull);

// configure strongly typed settings object
builder.Services.Configure<AppSettings>(builder.Configuration.GetSection("AppSettings"));

// configure DI for application services
builder.Services.AddScoped<IJwtUtils, JwtUtils>();
builder.Services.AddScoped<IUserService, UserService>();
//builder.Services.AddScoped<IRequestService, RequestService>();
//builder.Services.AddScoped<IUserService, UserService>();

var app = builder.Build();

/*using (var scope = app.Services.CreateScope())
{
    var services = scope.ServiceProvider;
    SchoolIntializer.Initialize(services);
}*/
// global cors policy
app.UseCors(x => x
    .AllowAnyOrigin()
    .AllowAnyMethod()
    .AllowAnyHeader());

// global error handler
app.UseMiddleware<ErrorHandlerMiddleware>();

// custom jwt auth middleware
app.UseMiddleware<JwtMiddleware>();

// custom jwt auth middleware
//app.UseMiddleware<JwtMiddleware>();
// 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.UseAuthorization();

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

app.Run();