feat: renamed old frontend and fixed some minor bugs

frontend/src/pages/secret-manager/integrations/GitlabOauthCallbackPage/GitlabOauthCallbackPage.tsx

@@ -0,0 +1,53 @@
+import { useEffect } from "react";
+import { useNavigate, useSearch } from "@tanstack/react-router";
+
+import { ROUTE_PATHS } from "@app/const/routes";
+import { useWorkspace } from "@app/context";
+import { useAuthorizeIntegration } from "@app/hooks/api";
+
+export const GitLabOAuthCallbackPage = () => {
+  const navigate = useNavigate();
+  const { mutateAsync } = useAuthorizeIntegration();
+
+  const { code, state } = useSearch({
+    from: ROUTE_PATHS.SecretManager.Integratons.GitlabOauthCallbackPage.id
+  });
+  const { currentWorkspace } = useWorkspace();
+
+  useEffect(() => {
+    (async () => {
+      try {
+        // validate state
+        const [csrfToken, url] = (state as string).split("|", 2);
+
+        if (csrfToken !== localStorage.getItem("latestCSRFToken")) return;
+        localStorage.removeItem("latestCSRFToken");
+
+        const integrationAuth = await mutateAsync({
+          workspaceId: currentWorkspace.id,
+          code: code as string,
+          integration: "gitlab",
+          ...(url === ""
+            ? {}
+            : {
+                url
+              })
+        });
+
+        navigate({
+          to: "/secret-manager/$projectId/integrations/gitlab/create",
+          params: {
+            projectId: currentWorkspace.id
+          },
+          search: {
+            integrationAuthId: integrationAuth.id
+          }
+        });
+      } catch (err) {
+        console.error(err);
+      }
+    })();
+  }, []);
+
+  return <div />;
+};