initial commit

backend/Program.cs

@@ -0,0 +1,103 @@
+using System.Reflection;
+using Extrudex.API.Hubs;
+using Extrudex.Domain.Interfaces;
+using Extrudex.Infrastructure.Data;
+using Extrudex.Infrastructure.Services;
+using FluentValidation;
+using Microsoft.EntityFrameworkCore;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// ── Database ───────────────────────────────────────────────
+// Connection string resolution (highest priority first):
+//   1. EXTRUDEX_DB_CONNECTION_STRING env var (Docker / production)
+//   2. Individual env vars: EXTRUDEX_DB_HOST, EXTRUDEX_DB_PORT, etc.
+//   3. appsettings.json ConnectionStrings:ExtrudexDb
+//   4. Hardcoded default for local dev
+var connectionString = Environment.GetEnvironmentVariable("EXTRUDEX_DB_CONNECTION_STRING")
+    ?? BuildConnectionStringFromEnvVars()
+    ?? builder.Configuration.GetConnectionString("ExtrudexDb")
+    ?? "Host=localhost;Port=5432;Database=extrudex;Username=extrudex;Password=changeme";
+
+builder.Services.AddDbContext<ExtrudexDbContext>(options =>
+    options.UseNpgsql(connectionString));
+
+// ── API Services ───────────────────────────────────────────
+builder.Services.AddControllers();
+builder.Services.AddEndpointsApiExplorer();
+builder.Services.AddSwaggerGen(c =>
+{
+    c.SwaggerDoc("v1", new()
+    {
+        Title = "Extrudex API",
+        Version = "v1",
+        Description = "Filament inventory and print tracking system"
+    });
+
+    // Include XML doc comments in Swagger output
+    var xmlFile = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
+    var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile);
+    if (File.Exists(xmlPath))
+    {
+        c.IncludeXmlComments(xmlPath);
+    }
+});
+
+// ── QR Code Generation ──────────────────────────────────────
+builder.Services.AddSingleton<IQrCodeService, QrCodeService>();
+
+// ── FluentValidation ──────────────────────────────────────
+// Registers all validators from the API assembly into DI.
+builder.Services.AddValidatorsFromAssembly(Assembly.GetExecutingAssembly());
+
+// ── CORS (kiosk + remote browser) ─────────────────────────
+// AllowAnyOrigin disallows credentials by spec; this is fine for
+// REST API calls. SignalR WebSockets negotiate without credentials
+// by default, so no special CORS policy is needed. If browser clients
+// require credentials (cookies, auth headers), replace AllowAnyOrigin
+// with .WithOrigins(...) and add .AllowCredentials().
+builder.Services.AddCors(options =>
+{
+    options.AddDefaultPolicy(policy =>
+    {
+        policy.AllowAnyOrigin()
+              .AllowAnyMethod()
+              .AllowAnyHeader();
+    });
+});
+
+// ── SignalR (real-time printer updates) ────────────────────
+builder.Services.AddSignalR();
+
+var app = builder.Build();
+
+// ── Middleware ──────────────────────────────────────────────
+if (app.Environment.IsDevelopment())
+{
+    app.UseSwagger();
+    app.UseSwaggerUI();
+}
+
+app.UseCors();
+app.UseAuthorization();
+app.MapControllers();
+
+// ── Hub Endpoints ───────────────────────────────────────────
+app.MapHub<PrinterHub>("/hubs/printer");
+
+app.Run();
+
+// Helper: builds a connection string from individual env vars.
+// Returns null if EXTRUDEX_DB_HOST is not set.
+static string? BuildConnectionStringFromEnvVars()
+{
+    var host = Environment.GetEnvironmentVariable("EXTRUDEX_DB_HOST");
+    if (string.IsNullOrEmpty(host)) return null;
+
+    var port = Environment.GetEnvironmentVariable("EXTRUDEX_DB_PORT") ?? "5432";
+    var database = Environment.GetEnvironmentVariable("EXTRUDEX_DB_NAME") ?? "extrudex";
+    var username = Environment.GetEnvironmentVariable("EXTRUDEX_DB_USER") ?? "extrudex";
+    var password = Environment.GetEnvironmentVariable("EXTRUDEX_DB_PASSWORD") ?? "changeme";
+
+    return $"Host={host};Port={port};Database={database};Username={username};Password={password}";
+}