Program.cs

using System.Text;
using System.Text.Json.Serialization;
using Backend.Context;
using Backend.Core.AutoMapperConfiguration;
using Backend.Entities;
using Backend.Services;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using Microsoft.IdentityModel.Tokens;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.

// Config DB
builder.Services.AddDbContext<ApplicationDbContext>(options =>
{
    var connectionString = builder.Configuration.GetConnectionString("local");
    options.UseSqlServer(connectionString);
});

// Config AutoMapper
builder.Services.AddAutoMapper(typeof(AutoMapperConfigProfile));

builder.Services
    .AddControllers()
    .AddJsonOptions(options =>
    {
        options.JsonSerializerOptions.Converters.Add(new JsonStringEnumConverter());
    });

// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

// Add Identity
builder.Services
    .AddIdentity<ApplicationUser, IdentityRole>()
    .AddEntityFrameworkStores<ApplicationDbContext>()
    .AddDefaultTokenProviders();

// Config Identity
builder.Services.Configure<IdentityOptions>(options =>
{
    options.Password.RequiredLength = 8;
    options.Password.RequireDigit = false;
    options.Password.RequireLowercase = false;
    options.Password.RequireUppercase = false;
    options.SignIn.RequireConfirmedEmail = false;

});

// Add Authentication and JwtBearer
builder.Services.
    AddAuthentication(options =>
    {
        options.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
        options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
        options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
    })
    .AddJwtBearer(options =>
    {
        options.SaveToken = true;
        options.RequireHttpsMetadata = false;
        options.TokenValidationParameters = new TokenValidationParameters()
        {
            ValidateIssuer = true,
            ValidateAudience = true,
            ValidIssuer = builder.Configuration["JWT:ValidIssuer"],
            ValidAudience = builder.Configuration["JWT:ValidAudience"],
            IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(builder.Configuration["JWT:Secret"]))
        };
    });

// Inject my app dependencies (Dependency Injection)
builder.Services.AddScoped<IAuthService, AuthService>();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

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

app.UseHttpsRedirection();

app.UseAuthentication();

app.UseAuthorization();

app.MapControllers();

app.Run();