feat: add support for removing instance admin permission from identity

backend/src/server/routes/v1/admin-router.ts

@@ -399,6 +399,42 @@ export const registerAdminRouter = async (server: FastifyZodProvider) => {
     }
   });
 
+  server.route({
+    method: "DELETE",
+    url: "/identity-management/identities/:identityId/super-admin-access",
+    config: {
+      rateLimit: writeLimit
+    },
+    schema: {
+      params: z.object({
+        identityId: z.string()
+      }),
+      response: {
+        200: z.object({
+          identity: IdentitiesSchema.pick({
+            name: true,
+            id: true
+          })
+        })
+      }
+    },
+    onRequest: (req, res, done) => {
+      verifyAuth([AuthMode.JWT, AuthMode.IDENTITY_ACCESS_TOKEN])(req, res, () => {
+        verifySuperAdmin(req, res, done);
+      });
+    },
+    handler: async (req) => {
+      const identity = await server.services.superAdmin.deleteIdentitySuperAdminAccess(
+        req.params.identityId,
+        req.permission.id
+      );
+
+      return {
+        identity
+      };
+    }
+  });
+
   server.route({
     method: "POST",
     url: "/bootstrap",

backend/src/services/super-admin/super-admin-service.ts

@@ -437,6 +437,22 @@ export const superAdminServiceFactory = ({
     return user;
   };
 
+  const deleteIdentitySuperAdminAccess = async (identityId: string, actorId: string) => {
+    const identity = await identityDAL.findById(identityId);
+    if (!identity) {
+      throw new NotFoundError({ name: "Identity", message: "Identity not found" });
+    }
+
+    const currentAdminIdentityIds = (await getServerCfg()).adminIdentityIds ?? [];
+    if (!currentAdminIdentityIds?.includes(identityId)) {
+      throw new BadRequestError({ name: "Identity", message: "Identity does not have super admin access" });
+    }
+
+    await updateServerCfg({ adminIdentityIds: currentAdminIdentityIds.filter((id) => id !== identityId) }, actorId);
+
+    return identity;
+  };
+
   const getIdentities = async ({ offset, limit, searchTerm }: TAdminGetIdentitiesDTO) => {
     const identities = await identityDAL.getIdentitiesByFilter({
       limit,
@@ -554,6 +570,7 @@ export const superAdminServiceFactory = ({
     getAdminSlackConfig,
     updateRootEncryptionStrategy,
     getConfiguredEncryptionStrategies,
-    grantServerAdminAccessToUser
+    grantServerAdminAccessToUser,
+    deleteIdentitySuperAdminAccess
   };
 };