feat: add new .env variable "LANGFLOW_FEATURE_MVP_COMPONENTS" to show/hide integration sidebar components (#4270)

* ✨ (authContext.tsx): Add functionality to fetch global variables on authentication
🔧 (api.tsx): Replace universal-cookie import with react-cookie for consistency
🔧 (authStore.ts): Replace universal-cookie import with react-cookie for consistency
🔧 (use-get-global-variables.ts): Add check to only fetch global variables if user is authenticated
✨ (use-get-mutation-global-variables.ts): Add mutation function to fetch and update global variables
🔧 (authStore.ts): Replace universal-cookie import with react-cookie for consistency

* 📝 (endpoints.py): add feature_flags field to ConfigResponse schema
📝 (endpoints.py): modify get_config function to include feature_flags in the response
📝 (feature_flags.py): add mvp_components field to FeatureFlags settings
📝 (schemas.py): add feature_flags field to ConfigResponse schema

* ✨ (use-get-config.ts): Add feature_flags field to ConfigResponse interface to support feature flags in the application
🔧 (utilityStore.ts): Add featureFlags field and setFeatureFlags function to utilityStore to manage feature flags in the application
💡 (extraSidebarComponent/index.tsx): Use featureFlags from utilityStore to conditionally render components based on feature flags in ExtraSidebar component

* ♻️ (frontend/package-lock.json): remove extraneous flag from is-unicode-supported package to clean up unnecessary information

* ✨ (integration-side-bar.spec.ts): Add integration tests to ensure correct visibility of integrations in the sidebar based on the value of mvp_components.

* ✨ (integration-side-bar.spec.ts): update integration-side-bar tests to use feature_flags object for mvp_components flag for better readability and maintainability.

* ✨ (integration-side-bar.spec.ts): add a 4-second delay before making the API call to improve test reliability

* [autofix.ci] apply automated fixes

* Update src/backend/base/langflow/api/v1/schemas.py

Co-authored-by: Gabriel Luiz Freitas Almeida <gabriel@langflow.org>

* Update src/backend/base/langflow/api/v1/endpoints.py

Co-authored-by: Gabriel Luiz Freitas Almeida <gabriel@langflow.org>

* formata

* [autofix.ci] apply automated fixes

* ✨ (extraSidebarComponent/index.tsx): update featureFlags property access to use optional chaining for better error handling
📝 (stop-building.spec.ts): add ua-parser-js import to get user agent information and update control key based on user's operating system for better user experience. Also, refactor code to improve readability and add comments for better understanding.

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: Gabriel Luiz Freitas Almeida <gabriel@langflow.org>

src/backend/base/langflow/api/v1/endpoints.py

@@ -45,6 +45,7 @@ from langflow.services.deps import (
     get_task_service,
     get_telemetry_service,
 )
+from langflow.services.settings.feature_flags import FEATURE_FLAGS
 from langflow.services.telemetry.schema import RunPayload
 from langflow.utils.constants import SIDEBAR_CATEGORIES
 from langflow.utils.version import get_version_info
@@ -629,7 +630,8 @@ def get_config():
         from langflow.services.deps import get_settings_service
 
         settings_service: SettingsService = get_settings_service()
-        return settings_service.settings.model_dump()
+
+        return {"feature_flags": FEATURE_FLAGS, **settings_service.settings.model_dump()}
     except Exception as exc:
         raise HTTPException(status_code=500, detail=str(exc)) from exc
 

src/backend/base/langflow/api/v1/schemas.py

@@ -15,6 +15,7 @@ from langflow.services.database.models.api_key.model import ApiKeyRead
 from langflow.services.database.models.base import orjson_dumps
 from langflow.services.database.models.flow import FlowCreate, FlowRead
 from langflow.services.database.models.user import UserRead
+from langflow.services.settings.feature_flags import FeatureFlags
 from langflow.services.tracing.schema import Log
 from langflow.utils.util_strings import truncate_long_strings
 
@@ -350,6 +351,7 @@ class FlowDataRequest(BaseModel):
 
 
 class ConfigResponse(BaseModel):
+    feature_flags: FeatureFlags
     frontend_timeout: int
     auto_saving: bool
     auto_saving_interval: int

src/backend/base/langflow/services/settings/feature_flags.py

@@ -3,6 +3,7 @@ from pydantic_settings import BaseSettings
 
 class FeatureFlags(BaseSettings):
     add_toolkit_output: bool = False
+    mvp_components: bool = False
 
     class Config:
         env_prefix = "LANGFLOW_FEATURE_"

src/frontend/src/controllers/API/queries/config/use-get-config.ts

@@ -12,6 +12,7 @@ export interface ConfigResponse {
   auto_saving_interval: number;
   health_check_max_retries: number;
   max_file_size_upload: number;
+  feature_flags: Record<string, any>;
 }
 
 export const useGetConfig: useQueryFunctionType<undefined, ConfigResponse> = (
@@ -27,6 +28,7 @@ export const useGetConfig: useQueryFunctionType<undefined, ConfigResponse> = (
   const setMaxFileSizeUpload = useUtilityStore(
     (state) => state.setMaxFileSizeUpload,
   );
+  const setFeatureFlags = useUtilityStore((state) => state.setFeatureFlags);
 
   const { query } = UseRequestProcessor();
 
@@ -43,6 +45,7 @@ export const useGetConfig: useQueryFunctionType<undefined, ConfigResponse> = (
       setAutoSavingInterval(data.auto_saving_interval);
       setHealthCheckMaxRetries(data.health_check_max_retries);
       setMaxFileSizeUpload(data.max_file_size_upload);
+      setFeatureFlags(data.feature_flags);
     }
     return data;
   };

src/frontend/src/pages/FlowPage/components/extraSidebarComponent/index.tsx

@@ -20,6 +20,7 @@ import { nodeIconsLucide } from "../../../../utils/styleUtils";
 import ParentDisclosureComponent from "../ParentDisclosureComponent";
 import { SidebarCategoryComponent } from "./SidebarCategoryComponent";
 
+import { useUtilityStore } from "@/stores/utilityStore";
 import { SidebarFilterComponent } from "./sidebarFilterComponent";
 import { sortKeys } from "./utils";
 
@@ -31,6 +32,8 @@ export default function ExtraSidebar(): JSX.Element {
   const hasStore = useStoreStore((state) => state.hasStore);
   const filterType = useFlowStore((state) => state.filterType);
 
+  const featureFlags = useUtilityStore((state) => state.featureFlags);
+
   const setErrorData = useAlertStore((state) => state.setErrorData);
   const [dataFilter, setFilterData] = useState(data);
   const [search, setSearch] = useState("");
@@ -248,7 +251,7 @@ export default function ExtraSidebar(): JSX.Element {
               <div key={index}></div>
             ),
           )}
-        {ENABLE_INTEGRATIONS && (
+        {(ENABLE_INTEGRATIONS || featureFlags?.mvp_components) && (
           <ParentDisclosureComponent
             defaultOpen={true}
             key={`${search.length !== 0}-${getFilterEdge.length !== 0}-Bundle`}

src/frontend/src/stores/utilityStore.ts

@@ -29,4 +29,6 @@ export const useUtilityStore = create<UtilityStoreType>((set, get) => ({
   setFlowsPagination: (flowsPagination: Pagination) => set({ flowsPagination }),
   tags: [],
   setTags: (tags: Tag[]) => set({ tags }),
+  featureFlags: {},
+  setFeatureFlags: (featureFlags: Record<string, any>) => set({ featureFlags }),
 }));

src/frontend/src/types/zustand/utility/index.ts

@@ -13,4 +13,6 @@ export type UtilityStoreType = {
   setFlowsPagination: (pagination: Pagination) => void;
   tags: Tag[];
   setTags: (tags: Tag[]) => void;
+  featureFlags: Record<string, any>;
+  setFeatureFlags: (featureFlags: Record<string, any>) => void;
 };

src/frontend/tests/core/features/stop-building.spec.ts

@@ -1,4 +1,5 @@
 import { expect, test } from "@playwright/test";
+import uaParser from "ua-parser-js";
 
 test("user must be able to stop a building", async ({ page }) => {
   await page.goto("/");
@@ -20,6 +21,14 @@ test("user must be able to stop a building", async ({ page }) => {
     modalCount = await page.getByTestId("modal-title")?.count();
   }
 
+  const getUA = await page.evaluate(() => navigator.userAgent);
+  const userAgentInfo = uaParser(getUA);
+  let control = "Control";
+
+  if (userAgentInfo.os.name.includes("Mac")) {
+    control = "Meta";
+  }
+
   await page.getByTestId("blank-flow").click();
 
   //first component
@@ -203,7 +212,62 @@ test("user must be able to stop a building", async ({ page }) => {
   await page.getByTestId("int_int_chunk_size").fill("2");
   await page.getByTestId("int_int_chunk_overlap").fill("1");
 
-  await page.getByTestId("button_run_chat output").click();
+  const timerCode = `
+# from langflow.field_typing import Data
+from langflow.custom import Component
+from langflow.io import MessageTextInput, Output
+from langflow.schema import Data
+import time
+
+class CustomComponent(Component):
+    display_name = "Custom Component"
+    description = "Use as a template to create your own component."
+    documentation: str = "http://docs.langflow.org/components/custom"
+    icon = "custom_components"
+    name = "CustomComponent"
+
+    inputs = [
+        MessageTextInput(name="input_value", display_name="Input Value", value="Hello, World!"),
+    ]
+
+    outputs = [
+        Output(display_name="Output", name="output", method="build_output"),
+    ]
+
+    def build_output(self) -> Data:
+        time.sleep(10000)
+        data = Data(value=self.input_value)
+        self.status = data
+        return data
+  `;
+
+  await page.getByTestId("extended-disclosure").click();
+  await page.getByPlaceholder("Search").click();
+  await page.getByPlaceholder("Search").fill("custom component");
+
+  await page.waitForTimeout(1000);
+
+  await page
+    .locator('//*[@id="helpersCustom Component"]')
+    .dragTo(page.locator('//*[@id="react-flow-id"]'));
+  await page.mouse.up();
+  await page.mouse.down();
+  await page.getByTitle("fit view").click();
+  await page.getByTitle("zoom out").click();
+
+  await page.getByTestId("title-Custom Component").first().click();
+
+  await page.waitForTimeout(500);
+  await page.getByTestId("code-button-modal").click();
+  await page.waitForTimeout(500);
+
+  await page.locator("textarea").last().press(`${control}+a`);
+  await page.keyboard.press("Backspace");
+  await page.locator("textarea").last().fill(timerCode);
+  await page.locator('//*[@id="checkAndSaveBtn"]').click();
+  await page.waitForTimeout(500);
+
+  await page.getByTestId("button_run_custom component").click();
 
   await page.waitForSelector("text=Building", {
     timeout: 100000,
@@ -233,7 +297,7 @@ test("user must be able to stop a building", async ({ page }) => {
     timeout: 100000,
   });
 
-  await page.getByTestId("button_run_chat output").click();
+  await page.getByTestId("button_run_custom component").click();
 
   await page.waitForSelector("text=Building", {
     timeout: 100000,
@@ -269,7 +333,7 @@ test("user must be able to stop a building", async ({ page }) => {
     timeout: 100000,
   });
 
-  await page.getByTestId("button_run_chat output").click();
+  await page.getByTestId("button_run_custom component").click();
 
   await page.waitForSelector('[data-testid="loading_icon"]', {
     timeout: 100000,

src/frontend/tests/extended/features/integration-side-bar.spec.ts

@@ -0,0 +1,96 @@
+import { expect, test } from "@playwright/test";
+
+test("user should be able to see integrations in the sidebar if mvp_components is true", async ({
+  page,
+}) => {
+  await page.route("**/api/v1/config", (route) => {
+    route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({
+        feature_flags: {
+          mvp_components: true,
+        },
+      }),
+      headers: {
+        "content-type": "application/json",
+        ...route.request().headers(),
+      },
+    });
+  });
+
+  await page.goto("/");
+  await page.waitForTimeout(1000);
+
+  let modalCount = 0;
+  try {
+    const modalTitleElement = await page?.getByTestId("modal-title");
+    if (modalTitleElement) {
+      modalCount = await modalTitleElement.count();
+    }
+  } catch (error) {
+    modalCount = 0;
+  }
+
+  while (modalCount === 0) {
+    await page.getByText("New Project", { exact: true }).click();
+    await page.waitForTimeout(3000);
+    modalCount = await page.getByTestId("modal-title")?.count();
+  }
+
+  await page.getByTestId("blank-flow").click();
+  await page.waitForSelector('[data-testid="extended-disclosure"]', {
+    timeout: 30000,
+  });
+
+  await expect(page.getByText("Integrations")).toBeVisible();
+  await expect(page.getByText("Notion")).toBeVisible();
+});
+
+test("user should NOT be able to see integrations in the sidebar if mvp_components is false", async ({
+  page,
+}) => {
+  await page.waitForTimeout(4000);
+  await page.route("**/api/v1/config", (route) => {
+    route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({
+        feature_flags: {
+          mvp_components: false,
+        },
+      }),
+      headers: {
+        "content-type": "application/json",
+        ...route.request().headers(),
+      },
+    });
+  });
+
+  await page.goto("/");
+  await page.waitForTimeout(1000);
+
+  let modalCount = 0;
+  try {
+    const modalTitleElement = await page?.getByTestId("modal-title");
+    if (modalTitleElement) {
+      modalCount = await modalTitleElement.count();
+    }
+  } catch (error) {
+    modalCount = 0;
+  }
+
+  while (modalCount === 0) {
+    await page.getByText("New Project", { exact: true }).click();
+    await page.waitForTimeout(3000);
+    modalCount = await page.getByTestId("modal-title")?.count();
+  }
+
+  await page.getByTestId("blank-flow").click();
+  await page.waitForSelector('[data-testid="extended-disclosure"]', {
+    timeout: 30000,
+  });
+
+  await expect(page.getByText("Integrations")).not.toBeVisible();
+  await expect(page.getByText("Notion")).not.toBeVisible();
+});