AEB-71: Added 3D navigation in monitoring zones

frontend/lib/auth.ts

@@ -60,7 +60,24 @@ async function refreshAccessToken(token: GoogleToken): Promise<GoogleToken> {
       } catch {
         errorData = { error: errorText }
       }
-      throw new Error(errorData.error || 'Token refresh failed')
+        
+      const errorMessage = (errorData.error as string) || (errorData.detail as string) || ''
+      if (typeof errorMessage === 'string' && 
+          (errorMessage.includes('Token is expired') || 
+           errorMessage.includes('expired') || 
+           errorData.code === 'token_not_valid')) {
+        console.warn('Refresh token expired, user needs to re-authenticate')
+        return {
+          ...token,
+          error: 'RefreshTokenExpired',
+        }
+      }
+      
+      console.error('Token refresh failed:', errorData.error || 'Token refresh failed')
+      return {
+        ...token,
+        error: 'RefreshAccessTokenError',
+      }
     }
 
     const refreshedTokens = await response.json()
@@ -173,6 +190,11 @@ export const authOptions: NextAuthOptions = {
       if (token) {
         session.accessToken = token.accessToken as string
         session.refreshToken = token.refreshToken as string
+         
+        if (token.error === 'RefreshTokenExpired') {
+          session.accessToken = undefined
+          session.refreshToken = undefined
+        }
       }
       return session
     },