snapshot of https://github.com/makeplane/plane.git @ d868349a55de79979eb8b98701bf1702c67ad634 (2026-09-15)

apps/web/core/lib/app-rail/provider.tsx

@@ -0,0 +1,53 @@
+/**
+ * Copyright (c) 2023-present Plane Software, Inc. and contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * See the LICENSE file for details.
+ */
+
+import React, { useCallback, useMemo } from "react";
+import { observer } from "mobx-react";
+import { useParams } from "next/navigation";
+import useLocalStorage from "@/hooks/use-local-storage";
+import { AppRailVisibilityContext } from "./context";
+import type { IAppRailVisibilityContext } from "./types";
+
+interface AppRailVisibilityProviderProps {
+  children: React.ReactNode;
+  isEnabled?: boolean; // Allow override, default false
+}
+
+/**
+ * AppRailVisibilityProvider - manages app rail visibility state
+ * Base provider that accepts isEnabled as a prop
+ */
+export const AppRailVisibilityProvider = observer(function AppRailVisibilityProvider({
+  children,
+  isEnabled = false,
+}: AppRailVisibilityProviderProps) {
+  const { workspaceSlug } = useParams();
+
+  // User preference from localStorage
+  const { storedValue: isCollapsed, setValue: setIsCollapsed } = useLocalStorage<boolean>(
+    `APP_RAIL_${workspaceSlug}`,
+    false // Default: not collapsed (app rail visible)
+  );
+
+  const toggleAppRail = useCallback(() => {
+    setIsCollapsed(!isCollapsed);
+  }, [isCollapsed, setIsCollapsed]);
+
+  // Compute final visibility: enabled and not collapsed
+  const shouldRenderAppRail = isEnabled && !isCollapsed;
+
+  const value: IAppRailVisibilityContext = useMemo(
+    () => ({
+      isEnabled,
+      isCollapsed: isCollapsed ?? false,
+      shouldRenderAppRail,
+      toggleAppRail,
+    }),
+    [isEnabled, isCollapsed, shouldRenderAppRail, toggleAppRail]
+  );
+
+  return <AppRailVisibilityContext.Provider value={value}>{children}</AppRailVisibilityContext.Provider>;
+});