show an error message on web if notion database is not found

packages/web/lib/networking/mutations/setIntegrationMutation.ts

@@ -23,9 +23,17 @@ type SetIntegrationResult = {
   setIntegration: SetIntegrationData
 }
 
+export enum SetIntegrationErrorCode {
+  AlreadyExists = 'ALREADY_EXISTS',
+  BadRequest = 'BAD_REQUEST',
+  InvalidToken = 'INVALID_TOKEN',
+  NotFound = 'NOT_FOUND',
+  Unauthorized = 'UNAUTHORIZED',
+}
+
 type SetIntegrationData = {
   integration: Integration
-  errorCodes?: string[]
+  errorCodes?: SetIntegrationErrorCode[]
 }
 
 type Integration = {
@@ -66,8 +74,8 @@ export async function setIntegrationMutation(
   const data = (await gqlFetcher(mutation, { input })) as SetIntegrationResult
   const error = data.setIntegration.errorCodes?.find(() => true)
   if (error) {
-    if (error === 'INVALID_TOKEN') throw 'Your token is invalid.'
-    throw error
+    throw new Error(error)
   }
+
   return data.setIntegration.integration
 }

packages/web/pages/settings/integrations/notion.tsx

@@ -13,7 +13,10 @@ import {
   Task,
   TaskState,
 } from '../../../lib/networking/mutations/exportToIntegrationMutation'
-import { setIntegrationMutation } from '../../../lib/networking/mutations/setIntegrationMutation'
+import {
+  SetIntegrationErrorCode,
+  setIntegrationMutation,
+} from '../../../lib/networking/mutations/setIntegrationMutation'
 import { apiFetcher } from '../../../lib/networking/networkHelpers'
 import { useGetIntegrationQuery } from '../../../lib/networking/queries/useGetIntegrationQuery'
 import { showSuccessToast } from '../../../lib/toastHelpers'
@@ -86,6 +89,13 @@ export default function Notion(): JSX.Element {
       revalidate()
       messageApi.success('Notion settings updated successfully.')
     } catch (error) {
+      if (
+        error instanceof Error &&
+        error.message === SetIntegrationErrorCode.NotFound
+      ) {
+        return messageApi.error('Notion database not found. Please make sure if you are using database ID instead of page ID.')
+      }
+
       messageApi.error('There was an error updating Notion settings.')
     }
   }