Canceling (immediately/at period end) and reactivating Stripe subscriptions

stripe.rb

# Canceling and reactivating Stripe subscriptions
# https://stripe.com/docs/billing/subscriptions/canceling-pausing#reactivating-canceled-subscriptions

subscription = Stripe::Subscription.create(customer: 'cus_XXX', items: [{ plan: 'XXX' }])

# Cancel at period end
subscription.delete(at_period_end: true)

# Reactivate
subscription.cancel_at_period_end = false
subscription.save # everything okay

# Cancel immediately
subscription.delete

# Try to reactive
subscription.cancel_at_period_end = false
subscription.save
# => Stripe::InvalidRequestError: (Status 404) (Request req_NeLQGouEN7UWgK) No such subscription: sub_XXX