CUB-112: scaffold Go backend with Chi, pgx, health check

backend/internal/router/router.go

@@ -0,0 +1,45 @@
+package router
+
+import (
+	"log/slog"
+	"net/http"
+	"time"
+
+	"github.com/CubeCraft-Creations/Extrudex/backend/internal/config"
+	"github.com/CubeCraft-Creations/Extrudex/backend/internal/handlers"
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/chi/v5/middleware"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+// New creates and configures a Chi router with all middleware and handlers mounted.
+func New(cfg *config.Config, dbPool *pgxpool.Pool) chi.Router {
+	r := chi.NewRouter()
+
+	// Middleware
+	r.Use(middleware.RequestID)
+	r.Use(middleware.RealIP)
+	r.Use(middleware.Logger)
+	r.Use(middleware.Recoverer)
+	r.Use(middleware.Timeout(60 * time.Second))
+
+	// CORS
+	r.Use(func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			w.Header().Set("Access-Control-Allow-Origin", cfg.CorsOrigin)
+			w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
+			w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Authorization")
+			if r.Method == http.MethodOptions {
+				w.WriteHeader(http.StatusNoContent)
+				return
+			}
+			next.ServeHTTP(w, r)
+		})
+	})
+
+	// Health check
+	healthHandler := handlers.NewHealthHandler(dbPool)
+	r.Get("/health", healthHandler.ServeHTTP)
+
+	return r
+}