From 20e1ac0e67136a3a95bd7915344944a3a3c4fe8b Mon Sep 17 00:00:00 2001
From: Saravana Kumar <saravanakumardb1@gmail.com>
Date: Sat, 30 May 2026 21:04:04 +0000
Subject: [PATCH] feat(admin-web): sync product context changes

---
 .../src/__tests__/product-context.test.tsx    | 82 +++++++++++++++++++
 .../admin-web/src/lib/product-context.tsx     | 17 +++-
 2 files changed, 98 insertions(+), 1 deletion(-)
 create mode 100644 dashboards/admin-web/src/__tests__/product-context.test.tsx

diff --git a/dashboards/admin-web/src/__tests__/product-context.test.tsx b/dashboards/admin-web/src/__tests__/product-context.test.tsx
new file mode 100644
index 00000000..82d3bfa5
--- /dev/null
+++ b/dashboards/admin-web/src/__tests__/product-context.test.tsx
@@ -0,0 +1,82 @@
+// @vitest-environment happy-dom
+
+import { afterEach, beforeEach, describe, expect, it } from 'vitest';
+import { act } from 'react';
+import { createRoot, type Root } from 'react-dom/client';
+
+import { ProductProvider, useProduct } from '@/lib/product-context';
+
+function ProductProbe() {
+  const { productId, productName, setProductId } = useProduct();
+  return (
+    <div>
+      <output data-testid="product-id">{productId}</output>
+      <output data-testid="product-name">{productName}</output>
+      <button type="button" onClick={() => setProductId('nomgap')}>
+        Switch to NomGap
+      </button>
+    </div>
+  );
+}
+
+describe('ProductProvider', () => {
+  let container: HTMLDivElement;
+  let root: Root;
+
+  beforeEach(() => {
+    (globalThis as unknown as { IS_REACT_ACT_ENVIRONMENT: boolean }).IS_REACT_ACT_ENVIRONMENT =
+      true;
+    localStorage.clear();
+    container = document.createElement('div');
+    document.body.appendChild(container);
+    root = createRoot(container);
+  });
+
+  afterEach(() => {
+    act(() => root.unmount());
+    container.remove();
+    localStorage.clear();
+  });
+
+  it('persists changes and emits a same-tab product-changed event', () => {
+    let eventCount = 0;
+    window.addEventListener('admin:product-changed', () => {
+      eventCount += 1;
+    });
+
+    act(() => {
+      root.render(
+        <ProductProvider>
+          <ProductProbe />
+        </ProductProvider>
+      );
+    });
+
+    act(() => {
+      container.querySelector('button')!.dispatchEvent(new MouseEvent('click', { bubbles: true }));
+    });
+
+    expect(container.querySelector('[data-testid="product-id"]')?.textContent).toBe('nomgap');
+    expect(container.querySelector('[data-testid="product-name"]')?.textContent).toBe('NomGap');
+    expect(localStorage.getItem('admin_selected_product')).toBe('nomgap');
+    expect(eventCount).toBe(1);
+  });
+
+  it('syncs provider state when another admin component updates localStorage', () => {
+    act(() => {
+      root.render(
+        <ProductProvider>
+          <ProductProbe />
+        </ProductProvider>
+      );
+    });
+
+    act(() => {
+      localStorage.setItem('admin_selected_product', 'mindlyst');
+      window.dispatchEvent(new Event('admin:product-changed'));
+    });
+
+    expect(container.querySelector('[data-testid="product-id"]')?.textContent).toBe('mindlyst');
+    expect(container.querySelector('[data-testid="product-name"]')?.textContent).toBe('MindLyst');
+  });
+});
diff --git a/dashboards/admin-web/src/lib/product-context.tsx b/dashboards/admin-web/src/lib/product-context.tsx
index fb1b1299..c69b6d81 100644
--- a/dashboards/admin-web/src/lib/product-context.tsx
+++ b/dashboards/admin-web/src/lib/product-context.tsx
@@ -1,9 +1,10 @@
 'use client';
 
-import { createContext, useContext, useState, useCallback, type ReactNode } from 'react';
+import { createContext, useContext, useState, useCallback, useEffect, type ReactNode } from 'react';
 import { KNOWN_PRODUCTS, PRODUCT_ID } from '@/lib/product-constants';
 
 const STORAGE_KEY = 'admin_selected_product';
+const PRODUCT_CHANGED_EVENT = 'admin:product-changed';
 
 interface ProductContextValue {
   productId: string;
@@ -22,10 +23,24 @@ function getInitialProduct(): string {
 export function ProductProvider({ children }: { children: ReactNode }) {
   const [productId, setProductIdState] = useState<string>(getInitialProduct);
 
+  useEffect(() => {
+    function syncSelectedProduct() {
+      setProductIdState(getInitialProduct());
+    }
+
+    window.addEventListener(PRODUCT_CHANGED_EVENT, syncSelectedProduct);
+    window.addEventListener('storage', syncSelectedProduct);
+    return () => {
+      window.removeEventListener(PRODUCT_CHANGED_EVENT, syncSelectedProduct);
+      window.removeEventListener('storage', syncSelectedProduct);
+    };
+  }, []);
+
   const setProductId = useCallback((id: string) => {
     setProductIdState(id);
     if (typeof window !== 'undefined') {
       localStorage.setItem(STORAGE_KEY, id);
+      window.dispatchEvent(new Event(PRODUCT_CHANGED_EVENT));
     }
   }, []);