case event.type
    when 'checkout.session.completed'
      session = event.data.object
      @user = User.find_by(stripe_customer_id: session.customer)
      @subscription = Subscription.new(user_id: @user.id)
      @subscription.stripe_id = session.subscription
      subscription_status = Stripe::Subscription.retrieve(session.subscription).status
      @subscription.membership_id = session.metadata.membership_id
      @subscription.update(subscription_status: subscription_status)
      flash.notice = "Congratulations #{@user.first_name}!You are now subscribed to the #{session.metadata.membership_title}."