Firebase stripe security rules

rules.js

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    function hasBasicSubs() {
      return request.auth.token.stripeRole == "basic";
    }

    function hasPremiumSubs() {
      return request.auth.token.stripeRole == "premium";
    }

    match /content-basic/{doc} {
      allow read: if hasBasicSubs() || hasPremiumSubs(); 
    }
    match /content-premium/{doc} {
      allow read: if hasPremiumSubs(); 
    }

    match /customers/{uid} {
      allow read: if request.auth.uid == uid;

      match /checkout_sessions/{id} {
        allow read, write: if request.auth.uid == uid;
      }
      match /subscriptions/{id} {
        allow read: if request.auth.uid == uid;
      }
    }

    match /products/{id} {
      allow read: if true;
      allow write: if false;

      match /prices/{id} {
        allow read: if true;
        allow write: if false;
      }
    }
  }
}