Rework request context handler

backend/internal/httpcontext/context.go

@@ -0,0 +1,31 @@
+package httpcontext
+
+import (
+	"context"
+	"net/http"
+	"novamd/internal/models"
+)
+
+// HandlerContext holds the request-specific data available to all handlers
+type HandlerContext struct {
+	UserID    int
+	UserRole  string
+	Workspace *models.Workspace // Will be nil for non-workspace endpoints
+}
+
+type contextKey string
+
+const HandlerContextKey contextKey = "handlerContext"
+
+func GetRequestContext(w http.ResponseWriter, r *http.Request) (*HandlerContext, bool) {
+	ctx := r.Context().Value(HandlerContextKey)
+	if ctx == nil {
+		http.Error(w, "Internal server error", http.StatusInternalServerError)
+		return nil, false
+	}
+	return ctx.(*HandlerContext), true
+}
+
+func WithHandlerContext(r *http.Request, hctx *HandlerContext) *http.Request {
+	return r.WithContext(context.WithValue(r.Context(), HandlerContextKey, hctx))
+}