Program.cs

using Microsoft.EntityFrameworkCore;
using WebPrintService;
using WebPrintService.Data;
using WebPrintService.Services;

var builder = WebApplication.CreateBuilder(args);

// Swagger
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen(c =>
{
    c.SwaggerDoc("v1", new() { Title = "Web Print Service", Version = "v1" });
});
builder.Services.AddControllers();

// SQLite
builder.Services.AddDbContext<PrintDbContext>(opt =>
    opt.UseSqlite("Data Source=webprintservice.db"));

// Services — register the right print client based on OS
if (OperatingSystem.IsWindows())
{
    builder.Services.AddSingleton<IPrintClient, WindowsPrintClient>();
}
else
{
    builder.Services.AddSingleton<IPrintClient, CupsClient>();
}
builder.Services.AddSingleton<RestartSignal>();
builder.Services.AddHostedService<PrintWorker>();
builder.Services.AddHttpClient();

// Logging — suppress EF command logs
builder.Logging.AddFilter("Microsoft.EntityFrameworkCore.Database.Command", LogLevel.Warning);
builder.Logging.AddFilter("Microsoft.EntityFrameworkCore.Query", LogLevel.Warning);

var app = builder.Build();

// Auto-migrate and seed
using (var scope = app.Services.CreateScope())
{
    var db = scope.ServiceProvider.GetRequiredService<PrintDbContext>();
    db.Database.EnsureCreated();

    // Seed default settings if empty
    if (!db.Settings.Any())
    {
        db.Settings.Add(new ServiceSettings
        {
            ServiceId = "default",
            ServerUrl = builder.Configuration["Print:ServerUrl"] ?? "http://localhost:5110",
            SignalRHub = "/scaleHub"
        });
        db.SaveChanges();
    }
}

// Banner
var port = builder.Configuration["Print:Port"] ?? "5230";
app.Urls.Add($"http://*:{port}");

var startLog = app.Services.GetRequiredService<ILogger<Program>>();
var printSystem = OperatingSystem.IsWindows() ? "Windows Print" : "CUPS (Linux/macOS)";
startLog.LogInformation("============================================");
startLog.LogInformation("  Web Print Service v1.0.0");
startLog.LogInformation("  Print System: {PrintSystem}", printSystem);
startLog.LogInformation("  Swagger: http://localhost:{Port}/swagger", port);
startLog.LogInformation("============================================");

app.UseSwagger();
app.UseSwaggerUI();
app.MapControllers();

app.Run();