fix(auth): export IsAdmin, fix bearer token fallback chain

src/core/auth/middleware.go

@@ -25,7 +25,7 @@ func (rc *RoleChecker) RequireAdmin(next http.Handler) http.Handler {
 			return
 		}
 
-		isAdmin, err := rc.isAdmin(userID)
+		isAdmin, err := rc.IsAdmin(userID)
 		if err != nil || !isAdmin {
 			http.Error(w, `{"error":"forbidden"}`, http.StatusForbidden)
 			return
@@ -35,8 +35,8 @@ func (rc *RoleChecker) RequireAdmin(next http.Handler) http.Handler {
 	})
 }
 
-// isAdmin checks if a user has the admin role.
-func (rc *RoleChecker) isAdmin(username string) (bool, error) {
+// IsAdmin checks if a user has the admin role.
+func (rc *RoleChecker) IsAdmin(username string) (bool, error) {
 	var role string
 	err := rc.db.QueryRow("SELECT role FROM users WHERE username = ?", username).Scan(&role)
 	if err == sql.ErrNoRows {

src/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"flag"
 	"fmt"
 	"log/slog"
@@ -130,26 +131,26 @@ func main() {
 	}
 	uiHandler.RegisterRoutes(mux, combinedAuth)
 
-	// --- Admin routes: session+role OR bearer token ---
-	adminRoleAuth := func(next http.Handler) http.Handler {
-		return sessionStore.SessionMiddleware(roleChecker.RequireAdmin(next))
-	}
+	// --- Admin auth: session (with admin role) OR bearer token ---
 	bearerAuth := admin.TokenAuthMiddleware(cfg.Admin.SecretToken)
-
-	// Combined: try session+role first, fall back to bearer token
 	adminAuth := func(next http.Handler) http.Handler {
-		return adminRoleAuth(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			// Check if session user exists and has admin role
-			userID, ok := auth.GetUserID(r)
-			if ok {
-				// Session is valid — already verified by RequireAdmin
-				_ = userID
-				next.ServeHTTP(w, r)
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			// First, try session-based authentication
+			cookie, err := r.Cookie("nextwks_session")
+			if err == nil && cookie != nil {
+				session, err := sessionStore.ValidateSession(cookie.Value)
+				if err == nil && session != nil {
+					isAdmin, _ := roleChecker.IsAdmin(session.UserID)
+					if isAdmin {
+						ctx := context.WithValue(r.Context(), auth.ContextUserID, session.UserID)
+						next.ServeHTTP(w, r.WithContext(ctx))
 						return
 					}
-			// No valid session — try bearer token
+				}
+			}
+			// Fall back to bearer token
 			bearerAuth(next).ServeHTTP(w, r)
-		}))
+		})
 	}
 
 	adminHandler.RegisterRoutes(mux, adminAuth)