Program.cs

using FormagenAPI.Middlewares;
using FormagenAPI.Services;
using Models;
using Services;

var MyAllowSpecificOrigins = "_myAllowSpecificOrigins";
var builder = WebApplication.CreateBuilder(args);
string frontEndUrl = builder.Configuration.GetValue<string>("FrontEndUrl") ?? "https://localhost:3000";

// Add services to the container.
builder.Services.AddCors(options =>
{
    options.AddPolicy(name: MyAllowSpecificOrigins,
                      policy =>
                      {
                          policy.WithOrigins(frontEndUrl)
                                .AllowCredentials()
                                .AllowAnyHeader()
                                .AllowAnyMethod();
                      });
});


builder.Services.AddControllers();
// Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
builder.Services.AddOpenApi();

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

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

builder.Services.AddSingleton<IUserService, UserService>();
builder.Services.AddSingleton<IAdminService, AdminService>();
builder.Services.AddSingleton<IFormService, FormService>();
builder.Services.AddSingleton<IEmailService, EmailService>();

builder.Services.AddControllers().AddJsonOptions(options =>
{
    options.JsonSerializerOptions.WriteIndented = true;
    options.JsonSerializerOptions.AllowOutOfOrderMetadataProperties = true;
});

var app = builder.Build();

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

app.UseHttpsRedirection();

app.UseCors(MyAllowSpecificOrigins);

app.UseAuthorization();

app.MapControllers();

app.UseErrorHandling();

app.Run();