Added docs for Autumn and null checking in useBilling

README.md

@@ -168,6 +168,18 @@ bun install
 > [!WARNING]
 > The authorized redirect URIs in Google Cloud Console must match **exactly** what you configure in the `.env`, including the protocol (http/https), domain, and path - these are provided above.
 
+3. **Autumn Setup** (Required for some encryption)
+
+    -Go to [Autumn](https://useautumn.com/)
+    -For Local Use, click [onboarding](https://app.useautumn.com/sandbox/onboarding) button and generate an Autumn Secret Key
+    -For production, select the production mode from upper left corner and generate an fill the other fields. After that, generate an Autumn Secret Key
+    - Add to `.env`:
+
+     ```env
+     AUTUMN_SECRET_KEY=your_autumn_secret
+     ```
+
+
 ### Environment Variables
 
 Copy `.env.example` located in the project folder to `.env` in the same folder and configure the following variables:

apps/mail/hooks/use-billing.ts

@@ -38,10 +38,12 @@ export const useBilling = () => {
   const { attach, track, openBillingPortal } = useAutumn();
 
   const customerFeatures = useMemo(() => {
-    if (!customer) return DEFAULT_FEATURES;
+    if (!customer || !customer.features || !Array.isArray(customer.features)) return DEFAULT_FEATURES;
 
     const features = customer.features.reduce(
       (acc: Features, feature: Feature) => {
+        if (!feature) return acc;
+
         const id = feature.feature_id;
         if (id === FEATURE_IDS.CHAT) {
           acc.chatMessages = {