Program.cs

using Facturacion.Api.Data;
using Facturacion.Api.Data.Seed;
using Facturacion.Api.Services.Auth;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.EntityFrameworkCore;
using Microsoft.IdentityModel.Tokens;
using Microsoft.OpenApi.Models;
using System.Text;

var builder = WebApplication.CreateBuilder(args);

// bContext
builder.Services.AddDbContext<AppDbContext>(options =>
 options.UseSqlServer(
 builder.Configuration.GetConnectionString("DefaultConnection")));

// Controllers
builder.Services.AddControllers();

// Swagger
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen(options =>
{
 options.AddSecurityDefinition("Bearer", new OpenApiSecurityScheme
 {
 Name = "Authorization",
 Type = SecuritySchemeType.Http,
 Scheme = "Bearer",
 BearerFormat = "JWT",
 In = ParameterLocation.Header,
 Description = "Ingresa el token JWT así: Bearer {tu_token}"
 });

 options.AddSecurityRequirement(new OpenApiSecurityRequirement
 {
 {
 new OpenApiSecurityScheme
 {
 Reference = new OpenApiReference
 {
 Type = ReferenceType.SecurityScheme,
 Id = "Bearer"
 }
 },
 Array.Empty<string>()
 }
 });
});

// JWT
builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
 .AddJwtBearer(options =>
 {
 var jwtSettings = builder.Configuration.GetSection("Jwt");
 options.TokenValidationParameters = new TokenValidationParameters
 {
 ValidateIssuer = true,
 ValidateAudience = true,
 ValidateLifetime = true,
 ValidateIssuerSigningKey = true,
 ValidIssuer = jwtSettings["Issuer"],
 ValidAudience = jwtSettings["Audience"],
 IssuerSigningKey = new SymmetricSecurityKey(
 Encoding.UTF8.GetBytes(jwtSettings["Key"]!))
 };
 });

// Services
builder.Services.AddScoped<IJwtService, JwtService>();
builder.Services.AddScoped<IPasswordHasher, TemporaryPasswordHasher>();
builder.Services.AddHttpContextAccessor();

// CORS
builder.Services.AddCors(options =>
{
 options.AddPolicy("AllowAll", policy => policy.AllowAnyOrigin().AllowAnyHeader().AllowAnyMethod());
});

var app = builder.Build();

// Migración + Seed
using (var scope = app.Services.CreateScope())
{
 var dbContext = scope.ServiceProvider.GetRequiredService<AppDbContext>();
 dbContext.Database.Migrate();
 await DbInitializer.SeedAsync(dbContext);
}

// Pipeline
if (app.Environment.IsDevelopment())
{
 app.UseSwagger();
 app.UseSwaggerUI();
}

app.UseCors("AllowAll");
app.UseHttpsRedirection();
app.UseAuthentication();
app.UseAuthorization();
app.MapControllers();

app.Run();