fix(web): disable subscription sharing on demo

packages/services/src/Domain/Session/SessionsClientInterface.ts

@@ -11,6 +11,7 @@ export interface SessionsClientInterface {
   createDemoShareToken(): Promise<Base64String | ClientDisplayableError>
   populateSessionFromDemoShareToken(token: Base64String): Promise<void>
   getUser(): User | undefined
+  isCurrentSessionReadOnly(): boolean | undefined
   register(email: string, password: string, ephemeral: boolean): Promise<UserRegistrationResponseBody>
   signIn(
     email: string,

packages/snjs/lib/Services/Session/SessionManager.ts

@@ -77,6 +77,7 @@ export class SNSessionManager
 {
   private user?: Responses.User
   private isSessionRenewChallengePresented = false
+  private session?: Session | LegacySession
 
   constructor(
     private diskStorageService: DiskStorageService,
@@ -149,6 +150,8 @@ export class SNSessionManager
   }
 
   private setSession(session: Session | LegacySession, persist = true): void {
+    this.session = session
+
     if (session instanceof Session) {
       this.httpService.setSession(session)
     }
@@ -170,6 +173,18 @@ export class SNSessionManager
     return this.user
   }
 
+  isCurrentSessionReadOnly(): boolean | undefined {
+    if (this.session === undefined) {
+      return undefined
+    }
+
+    if (this.session instanceof LegacySession) {
+      return false
+    }
+
+    return this.session.isReadOnly()
+  }
+
   public getSureUser() {
     return this.user as Responses.User
   }

packages/web/src/javascripts/Components/Preferences/Panes/Account/SubscriptionSharing/SubscriptionSharing.tsx

@@ -1,4 +1,4 @@
-import { FeatureStatus, FeatureIdentifier } from '@standardnotes/snjs'
+import { FeatureStatus, FeatureIdentifier, SessionsClientInterface } from '@standardnotes/snjs'
 import { observer } from 'mobx-react-lite'
 import { FunctionComponent, useState } from 'react'
 
@@ -26,8 +26,11 @@ const SubscriptionSharing: FunctionComponent<Props> = ({ application, viewContro
 
   const subscriptionState = viewControllerManager.subscriptionController
 
+  const isReadOnlySession = application.sessions.isCurrentSessionReadOnly()
+
   const isSubscriptionSharingFeatureAvailable =
-    application.features.getFeatureStatus(FeatureIdentifier.SubscriptionSharing) === FeatureStatus.Entitled
+    application.features.getFeatureStatus(FeatureIdentifier.SubscriptionSharing) === FeatureStatus.Entitled &&
+    !isReadOnlySession
 
   const closeInviteDialog = () => setIsInviteDialogOpen(false)