module StripeCustomersHelper

  PLANS = [
    :new_member_monthly,
    :current_member_monthly,
    :new_member_annual,
    :current_member_annual
  ]

  def get_stripe_customers
    each_customer do |customer|
      unless has_member_subscription?(customer)
        puts customer.email
      end
    end
  end

  private

  def has_member_subscription?(customer)
    subscription_presence = false
    card_presence = false

    customer.sources.data.each do |source|
      if source.object == 'card'
        card_presence = true
        break
      end
    end

    return true unless card_presence

    customer.subscriptions.data.each do |subscription|
      if PLANS.include?(subscription.plan.id.to_sym)
        subscription_presence = true
        break
      end
    end

    subscription_presence
  end

  def each_customer
    starting_after = nil
    loop do
      customers = Stripe::Customer.all(limit: 100, starting_after: starting_after)
      break if customers.data.length == 0
      customers.each do |customer|
        yield customer
      end
      starting_after = customers.data.last.id
    end
  end

end